JavaWeb 案例——访问权限控制

JavaWeb 案例——访问权限控制

 

一、功能介绍

       每个网站都涉及到访问权限的控制。每个站点资源都需要被管理起来，用户只有具有访问某个资源的特定权限，才能够访问，否则拒绝访问。

二、项目分析

       我们要实现网站的访问权限控制，就应该从 URI 入手，站点的每个资源都用唯一的 URI 描述，我们为想要管理起来的 URI 增加上权限属性，当用户访问资源时我们要先检查用户是否具有权限。这个项目我采用过滤器技术实现权限拦截，下一个项目我将采用注解+动态代理实现权限的拦截。

        我们需要编写一个过滤器，拦截用户的每个访问请求。再依据 URI 判断是否需要权限。这个是比较简单的，关键就是我们如何将这种权限关系描述出来，如果使用过滤器技术，我们就不得不使用数据库来将每个权限、资源等保存起来。一个资源需要一个权限，一个权限对应多个角色，一个角色可以拥有多个权限，一个用户拥有多个角色，一个角色又可以被多个用户引用。所以资源与权限是一对一关系，权限与角色是多对多关系，角色与用户也是多对多关系。因此在数据库我们需要6张表来保存关系。

 

一、对象关系	资源、权限、角色、用户

	资源   	------>		权限		一对多
	权限	    <----->		角色		多对多
	角色   	<----->		用户		多对多
	
	资源：
		String id	编号
		String uri	资源uri
		String description	描述
		Permission permission	该资源需要的权限
		
	权限：
		String id	编号
		String name	权限名
		String description 权限描述
		
	角色：
		String id	编号
		String name	角色名
		String description 角色描述
		Set<Permission> set 该角色具有的权限
		
	用户：
		String id	编号
		String username	用户名
		String password	密码
		Set<Role> set	该用户都具有的角色
		
二、数据库实现

create database if not exists sys_permission;
use sys_permission;

create table if not exists resource(
	id varchar(40) primary key,
	uri varchar(255) unique,
	description varchar(255),
	permission_id varchar(40),
	constraint rPermission_id_FK foreign key(permission_id) references permission(id)
);

create table if not exists permission(
	id varchar(40) primary key,
	name varchar(40) unique,
	description varchar(255)
);

create table if not exists role(
	id varchar(40) primary key,
	name varchar(40) unique,
	description varchar(255)
);

create table if not exists user(
	id varchar(40) primary key,
	username varchar(40) not null unique,
	password varchar(40) not null
);

create table if not exists permission_role(
	permission_id varchar(40) not null,
	role_id varchar(40) not null,
	constraint permission_id_FK foreign key(permission_id) references permission(id),
	constraint role_id_FK foreign key(role_id) references role(id),
	constraint primary key(permission_id,role_id)
);

create table if not exists user_role(
	user_id varchar(40) not null,
	role_id varchar(40) not null,
	constraint user_id_FK foreign key(user_id) references user(id),
	constraint uRole_id_FK foreign key(role_id) references role(id),
	constraint primary key(user_id,role_id)
);

三、项目新技术

       1、采用 sitemesh 框架为每个页面动态增加模版。原理：sitemesh 实际上也是一个过滤器，当用户访问一个页面时，sitemesh 将请求拦截下来，在服务器以后使用 response 写出数据的时候，实际上是写到了代理对象的缓存中，当数据读写完，sitemesh 再对数据进行包装之后再打给浏览器。

         2、采用 windows 命令初始化数据库。我们将数据库的初始化信息写在文件中，当在浏览器访问初始化 Servlet 时，将使用 windows 命令将文件中的数据导入到 mysql 中。

 

package cn.dk.domain;

public class Permission {

	private String id;
	private String name;
	private String description;

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getDescription() {
		return description;
	}

	public void setDescription(String description) {
		this.description = description;
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((id == null) ? 0 : id.hashCode());
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		final Permission other = (Permission) obj;
		if (id == null) {
			if (other.id != null)
				return false;
		} else if (!id.equals(other.id))
			return false;
		return true;
	}

}

package cn.dk.domain;

public class Resource {

	private String id;
	private String uri;
	private String description;
	private Permission permission;

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public String getUri() {
		return uri;
	}

	public void setUri(String uri) {
		this.uri = uri;
	}

	public String getDescription() {
		return description;
	}

	public void setDescription(String description) {
		this.description = description;
	}

	public Permission getPermission() {
		return permission;
	}

	public void setPermission(Permission permission) {
		this.permission = permission;
	}
}

package cn.dk.domain;

import java.util.HashSet;
import java.util.Set;

public class Role {

	public Role() {
		super();
		this.permissions = new HashSet<Permission>();
	}

	private String id;
	private String name;
	private String description;
	private Set<Permission> permissions;

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getDescription() {
		return description;
	}

	public void setDescription(String description) {
		this.description = description;
	}

	public Set<Permission> getPermissions() {
		return permissions;
	}

	public void setPermissions(Set<Permission> permissions) {
		this.permissions = permissions;
	}
}

package cn.dk.domain;

import java.util.HashSet;
import java.util.Set;

public class User {
	
	public User(){
		super();
		this.roles = new HashSet<Role>();
	}

	private String id;
	private String username;
	private String password;
	private Set<Role> roles;

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}

	public Set<Role> getRoles() {
		return roles;
	}

	public void setRoles(Set<Role> roles) {
		this.roles = roles;
	}
}

package cn.dk.dao;

import java.util.List;

import cn.dk.domain.Permission;

public interface IPermissionDao {

	// 插入新权限
	void insertPermission(Permission permission);

	// 删除权限
	void deletePermission(String id);

	// 根据id查找权限
	Permission findPermissionById(String id);

	// 查找所有权限
	@SuppressWarnings("unchecked")
	List<Permission> findAllPermission();

}

package cn.dk.dao;

import java.util.List;

import cn.dk.domain.Resource;

public interface IResourceDao {

	// 增加资源
	void insertResource(Resource resource);

	// 修改资源
	void updateResource(Resource resource);

	// 查找所有资源
	@SuppressWarnings("unchecked")
	List<Resource> findAllResource();

	// 根据uri查找资源
	Resource findResourceByURI(String uri);

	// 根据id查找资源
	Resource findResourceById(String id);

	// 删除资源
	void deleteResource(String id);

}

package cn.dk.dao;

import java.util.List;
import cn.dk.domain.Role;

public interface IRoleDao {

	// 新增角色
	void insertRole(Role role);

	// 更新角色
	void updateRole(Role role);

	// 删除角色
	void deleteRole(String id);

	// 根据id查找角色
	@SuppressWarnings("unchecked")
	Role findRoleById(String id);

	// 查找所有角色
	@SuppressWarnings("unchecked")
	List<Role> fineAllRole();

}

package cn.dk.dao;

import java.util.List;
import cn.dk.domain.User;

public interface IUserDao {

	// 插入用户
	void insertUser(User user);

	// 更新用户
	void updateUser(User user);

	// 删除用户
	void deleteUser(String id);

	// 根据id查找用户
	@SuppressWarnings("unchecked")
	User findUserById(String id);

	// 查找所有用户
	@SuppressWarnings("unchecked")
	List<User> findAllUser();
	
	User login(String username, String password);
}

package cn.dk.dao.impl;

import java.sql.SQLException;
import java.util.List;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;
import cn.dk.dao.IPermissionDao;
import cn.dk.domain.Permission;
import cn.dk.utils.DBUtils;

public class PermissionDaoImpl implements IPermissionDao {

	// 插入新权限
	public void insertPermission(Permission permission) {
		QueryRunner runner = new QueryRunner(DBUtils.getDataSource());
		String sql = "insert into permission (id,name,description) values(?,?,?)";
		Object[] params = { permission.getId(), permission.getName(),
				permission.getDescription() };
		try {
			runner.update(sql, params);
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
	}

	// 删除权限
	public void deletePermission(String id) {
		QueryRunner runer = new QueryRunner(DBUtils.getDataSource());
		String sql = "update resource set permission_id=null where permission_id=?";
		try {
			runer.update(sql, id);
			sql = "delete from permission where id=?";
			runer.update(sql, id);
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
	}

	// 根据id查找权限
	public Permission findPermissionById(String id) {
		QueryRunner runer = new QueryRunner(DBUtils.getDataSource());
		String sql = "select id,name,description from permission where id=?";
		Object[] params = { id };
		try {
			return (Permission) runer.query(sql, new BeanHandler(
					Permission.class), params);
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
	}

	// 查找所有权限
	@SuppressWarnings("unchecked")
	public List<Permission> findAllPermission() {
		List<Permission> list = null;
		QueryRunner runer = new QueryRunner(DBUtils.getDataSource());
		String sql = "select id,name,description from permission";
		try {
			list = (List<Permission>) runer.query(sql, new BeanListHandler(
					Permission.class));
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
		return list;
	}
}

package cn.dk.dao.impl;

import java.sql.SQLException;
import java.util.List;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;
import cn.dk.dao.IResourceDao;
import cn.dk.domain.Permission;
import cn.dk.domain.Resource;
import cn.dk.utils.DBUtils;

public class ResourceDaoImpl implements IResourceDao {

	// 增加资源
	public void insertResource(Resource resource) {
		QueryRunner runner = new QueryRunner(DBUtils.getDataSource());
		String sql = "insert into resource (id,uri,description,permission_id) values(?,?,?,?)";
		Object[] params = { resource.getId(), resource.getUri(),
				resource.getDescription(), resource.getPermission().getId() };
		try {
			runner.update(sql, params);
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
	}

	// 修改资源
	public void updateResource(Resource resource) {
		QueryRunner runner = new QueryRunner(DBUtils.getDataSource());
		String sql = "update resource set uri=?,description=?,permission_id=? where id=?";
		Object[] params = { resource.getUri(), resource.getDescription(),
				resource.getPermission().getId(), resource.getId() };
		try {
			runner.update(sql, params);
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
	}

	// 查找所有资源
	@SuppressWarnings("unchecked")
	public List<Resource> findAllResource() {
		List<Resource> list = null;
		QueryRunner runner = new QueryRunner(DBUtils.getDataSource());
		String sql = "select id,uri,description from resource";
		try {
			list = (List<Resource>) runner.query(sql, new BeanListHandler(
					Resource.class));
			for (Resource resource : list) {
				sql = "select p.id,p.name,p.description from permission p,resource r where r.permission_id=p.id and r.id=?";
				Object[] params = { resource.getId() };
				Permission permission = (Permission) runner.query(sql,
						new BeanHandler(Permission.class), params);
				resource.setPermission(permission);
			}
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
		return list;
	}

	// 根据uri查找资源
	public Resource findResourceByURI(String uri) {
		QueryRunner runner = new QueryRunner(DBUtils.getDataSource());
		String sql = "select id,uri,description from resource where uri=?";
		Object[] params = { uri };
		try {
			Resource resource = (Resource) runner.query(sql, new BeanHandler(
					Resource.class), params);
			if (resource == null)
				return null;
			sql = "select p.id,p.name,p.description from permission p,resource r where r.permission_id=p.id and r.id=?";
			params = new Object[] { resource.getId() };
			Permission permission = (Permission) runner.query(sql,
					new BeanHandler(Permission.class), params);
			resource.setPermission(permission);
			return resource;
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
	}

	// 根据id查找资源
	public Resource findResourceById(String id) {
		QueryRunner runner = new QueryRunner(DBUtils.getDataSource());
		String sql = "select id,uri,description from resource where id=?";
		Object[] params = { id };
		try {
			Resource resource = (Resource) runner.query(sql, new BeanHandler(
					Resource.class), params);
			sql = "select p.id,p.name,p.description from permission p,resource r where r.permission_id=p.id and r.id=?";
			params = new Object[] { resource.getId() };
			Permission permission = (Permission) runner.query(sql,
					new BeanHandler(Permission.class), params);
			resource.setPermission(permission);
			return resource;
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
	}

	// 删除资源
	public void deleteResource(String id) {
		QueryRunner runner = new QueryRunner(DBUtils.getDataSource());
		String sql = "delete from resource where id=?";
		Object[] params = { id };
		try {
			runner.update(sql, params);
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
	}
}

package cn.dk.dao.impl;

import java.sql.SQLException;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;
import cn.dk.dao.IRoleDao;
import cn.dk.domain.Permission;
import cn.dk.domain.Role;
import cn.dk.utils.DBUtils;

public class RoleDaoImpl implements IRoleDao {

	// 新增角色
	public void insertRole(Role role) {
		QueryRunner runner = new QueryRunner(DBUtils.getDataSource());
		String sql = "insert into role (id,name,description) values(?,?,?)";
		Object[] params = { role.getId(), role.getName(), role.getDescription() };
		try {
			runner.update(sql, params);
			sql = "insert into permission_role (permission_id,role_id) values(?,?)";
			Set<Permission> set = role.getPermissions();
			for (Permission permission : set) {
				params = new Object[] { permission.getId(), role.getId() };
				runner.update(sql, params);
			}
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
	}

	// 更新角色
	public void updateRole(Role role) {
		QueryRunner runner = new QueryRunner(DBUtils.getDataSource());
		Set<Permission> set = role.getPermissions();
		String sql = "delete from permission_role where role_id=?";
		try {
			runner.update(sql, role.getId());
			sql = "update role set name=?,description=? where id=?";
			Object[] params = { role.getName(), role.getDescription(),
					role.getId() };
			runner.update(sql, params);
			sql = "insert into permission_role (permission_id,role_id) values(?,?)";
			for (Permission permission : set) {
				params = new Object[] { permission.getId(), role.getId() };
				runner.update(sql, params);
			}
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
	}

	// 删除角色
	public void deleteRole(String id) {
		QueryRunner runner = new QueryRunner(DBUtils.getDataSource());
		String sql = "delete from permission_role where role_id=?";
		try {
			runner.update(sql, id);
			sql = "delete from role where id=?";
			runner.update(sql, id);
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
	}

	// 根据id查找角色
	@SuppressWarnings("unchecked")
	public Role findRoleById(String id) {
		QueryRunner runner = new QueryRunner(DBUtils.getDataSource());
		String sql = "select id,name,description from role where id=?";
		Object[] params = { id };
		try {
			Role role = (Role) runner.query(sql, new BeanHandler(Role.class),
					params);
			sql = "select p.id,p.name,p.description from permission p,permission_role pr where p.id=pr.permission_id and pr.role_id=?";
			params = new Object[] { id };
			Set<Permission> set = new HashSet<Permission>();
			set.addAll((List<Permission>) runner.query(sql,
					new BeanListHandler(Permission.class), params));
			role.setPermissions(set);
			return role;
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
	}

	// 查找所有角色
	@SuppressWarnings("unchecked")
	public List<Role> fineAllRole() {
		List<Role> list = null;
		QueryRunner runner = new QueryRunner(DBUtils.getDataSource());
		String sql = "select id,name,description from role";
		try {
			list = (List<Role>) runner.query(sql, new BeanListHandler(
					Role.class));
			sql = "select p.id,p.name,p.description from permission p,permission_role pr where p.id=pr.permission_id and pr.role_id=?";
			for (Role role : list) {
				Object[] params = new Object[] { role.getId() };
				Set<Permission> set = new HashSet<Permission>();
				set.addAll((List<Permission>) runner.query(sql,
						new BeanListHandler(Permission.class), params));
				role.setPermissions(set);
			}
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
		return list;
	}
}

package cn.dk.dao.impl;

import java.sql.SQLException;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;
import cn.dk.dao.IUserDao;
import cn.dk.domain.Role;
import cn.dk.domain.User;
import cn.dk.utils.DBUtils;

public class UserDaoImpl implements IUserDao {

	// 插入用户
	public void insertUser(User user) {
		QueryRunner runner = new QueryRunner(DBUtils.getDataSource());
		String sql = "insert into user (id,username,password) values(?,?,?)";
		Object[] params = { user.getId(), user.getUsername(),
				user.getPassword() };
		try {
			runner.update(sql, params);
			Set<Role> roles = user.getRoles();
			sql = "insert into user_role (user_id,role_id) values(?,?)";
			for (Role role : roles) {
				params = new Object[] { user.getId(), role.getId() };
				runner.update(sql, params);
			}
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
	}

	// 更新用户
	public void updateUser(User user) {
		QueryRunner runner = new QueryRunner(DBUtils.getDataSource());
		String sql = "delete from user_role where user_id=?";
		try {
			runner.update(sql, user.getId());
			sql = "update user set username=?,password=? where id=?";
			Object[] params = { user.getUsername(), user.getPassword(),
					user.getId() };
			runner.update(sql, params);
			sql = "insert into user_role (user_id,role_id) values(?,?)";
			Set<Role> roles = user.getRoles();
			for (Role role : roles) {
				params = new Object[] { user.getId(), role.getId() };
				runner.update(sql, params);
			}
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
	}

	// 删除用户
	public void deleteUser(String id) {
		QueryRunner runner = new QueryRunner(DBUtils.getDataSource());
		String sql = "delete from user_role where user_id=?";
		try {
			runner.update(sql, id);
			sql = "delete from user where id=?";
			runner.update(sql, id);
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
	}

	// 根据id查找用户
	@SuppressWarnings("unchecked")
	public User findUserById(String id) {
		QueryRunner runner = new QueryRunner(DBUtils.getDataSource());
		String sql = "select id,username,password from user where id=?";
		Object[] params = { id };
		try {
			User user = (User) runner.query(sql, new BeanHandler(User.class),
					params);
			sql = "select r.id,r.name,r.description from role r,user_role ur where r.id=ur.role_id and ur.user_id=?";
			params = new Object[] { id };
			List<Role> list = (List<Role>) runner.query(sql,
					new BeanListHandler(Role.class), params);
			Set<Role> set = new HashSet<Role>();
			set.addAll(list);
			user.setRoles(set);
			return user;
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
	}

	// 查找所有用户
	@SuppressWarnings("unchecked")
	public List<User> findAllUser() {
		List<User> list = null;
		QueryRunner runner = new QueryRunner(DBUtils.getDataSource());
		String sql = "select id,username,password from user";
		try {
			list = (List<User>) runner.query(sql, new BeanListHandler(
					User.class));
			sql = "select r.id,r.name,r.description from role r,user_role ur where r.id=ur.role_id and ur.user_id=?";
			for (User user : list) {
				Object[] params = new Object[] { user.getId() };
				Set<Role> set = new HashSet<Role>();
				set.addAll((List<Role>) runner.query(sql, new BeanListHandler(
						Role.class), params));
				user.setRoles(set);
			}
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
		return list;
	}

	// 用户登录
	@SuppressWarnings("unchecked")
	public User login(String username, String password) {
		User user = null;
		QueryRunner runner = new QueryRunner(DBUtils.getDataSource());
		String sql = "select id,username,password from user where username=? and password=?";
		Object[] params = { username, password };
		try {
			user = (User) runner
					.query(sql, new BeanHandler(User.class), params);
			if (user != null) {
				sql = "select r.id,r.name,r.description from role r, user_role ur where r.id=ur.role_id and ur.user_id=?";
				params = new Object[] { user.getId() };
				Set<Role> set = new HashSet<Role>();
				set.addAll((List<Role>) runner.query(sql, new BeanListHandler(
						Role.class), params));
				user.setRoles(set);
			}
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
		return user;
	}
}

package cn.dk.factory;

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

public class DaoFactory {

	private static DaoFactory factory = new DaoFactory();
	private static Properties properties;

	private DaoFactory() {
		InputStream inputStream = DaoFactory.class.getClassLoader()
				.getResourceAsStream("daoFactory.properties");
		try {
			properties = new Properties();
			properties.load(inputStream);
		} catch (IOException e) {
			throw new ExceptionInInitializerError(e);
		}
	}

	public static DaoFactory newInstance() {
		return factory;
	}

	@SuppressWarnings("unchecked")
	public <T> T getDao(Class<T> clazz) {
		String simpleName = clazz.getSimpleName();
		String className = properties.getProperty(simpleName);
		try {
			return (T) Class.forName(className).newInstance();
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	}
}

package cn.dk.service;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;

public class InitialService {

	// 系统初始化
	public String initial() throws Exception {
		String filePath = InitialService.class.getClassLoader().getResource(
				"init.sql").getPath();
		filePath = filePath.substring(1);
		String command = "cmd /c mysql -uroot -proot<" + filePath;
		Process process = Runtime.getRuntime().exec(command);
		InputStream errorStream = process.getErrorStream();
		BufferedReader br = new BufferedReader(new InputStreamReader(
				errorStream));
		char[] chars = new char[1024];
		int len = 0;
		StringBuffer sb = new StringBuffer();
		while ((len = br.read(chars)) != -1) {
			sb.append(chars, 0, len);
		}
		if (sb.length() > 0)
			return sb.insert(0, "初始化失败，原因：").toString();
		else
			return "初始化成功";
	}
}

package cn.dk.service;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.UUID;
import cn.dk.dao.IPermissionDao;
import cn.dk.dao.IResourceDao;
import cn.dk.dao.IRoleDao;
import cn.dk.dao.IUserDao;
import cn.dk.domain.Permission;
import cn.dk.domain.Resource;
import cn.dk.domain.Role;
import cn.dk.domain.User;
import cn.dk.factory.DaoFactory;

public class Service {

	private DaoFactory factory = DaoFactory.newInstance();
	private IPermissionDao permissionDao = factory.getDao(IPermissionDao.class);
	private IResourceDao resourceDao = factory.getDao(IResourceDao.class);
	private IRoleDao roleDao = factory.getDao(IRoleDao.class);
	private IUserDao userDao = factory.getDao(IUserDao.class);

	// 权限
	public void insertPermission(Permission permission) {
		permission.setId(UUID.randomUUID().toString());
		permissionDao.insertPermission(permission);
	}

	public void deletePermission(String id) {
		permissionDao.deletePermission(id);
	}

	public Permission findPermissionById(String id) {
		return permissionDao.findPermissionById(id);
	}

	public List<Permission> findAllPermission() {
		return permissionDao.findAllPermission();
	}

	// 资源
	public void insertResource(Resource resource, String permissionId) {
		Permission permission = findPermissionById(permissionId);
		resource.setPermission(permission);
		resource.setId(UUID.randomUUID().toString());
		resourceDao.insertResource(resource);
	}

	public void updateResource(Resource resource, String permissionId) {
		Permission permission = findPermissionById(permissionId);
		resource.setPermission(permission);
		resourceDao.updateResource(resource);
	}

	public List<Resource> findAllResource() {
		return resourceDao.findAllResource();
	}

	public Resource findResourceByURI(String uri) {
		return resourceDao.findResourceByURI(uri);
	}

	public Resource findResourceById(String id) {
		return resourceDao.findResourceById(id);
	}

	public void deleteResource(String id) {
		resourceDao.deleteResource(id);
	}

	// 角色
	public void insertRole(Role role, String[] permissionId) {
		Set<Permission> permissions = new HashSet<Permission>();
		for (int i = 0; permissionId != null && i < permissionId.length; i++) {
			Permission permission = findPermissionById(permissionId[i]);
			permissions.add(permission);
		}
		role.setPermissions(permissions);
		role.setId(UUID.randomUUID().toString());
		roleDao.insertRole(role);
	}

	public void updateRole(Role role, String[] permissionId) {
		Set<Permission> permissions = new HashSet<Permission>();
		for (int i = 0; permissionId != null && i < permissionId.length; i++) {
			Permission permission = findPermissionById(permissionId[i]);
			permissions.add(permission);
		}
		role.setPermissions(permissions);
		roleDao.updateRole(role);
	}

	public void deleteRole(String id) {
		roleDao.deleteRole(id);
	}

	public Role findRoleById(String id) {
		return roleDao.findRoleById(id);
	}

	public List<Role> fineAllRole() {
		return roleDao.fineAllRole();
	}

	// 用户
	public void insertUser(User user, String[] roleId) {
		Set<Role> roles = new HashSet<Role>();
		for (int i = 0; roleId != null && i < roleId.length; i++) {
			Role role = roleDao.findRoleById(roleId[i]);
			roles.add(role);
		}
		user.setRoles(roles);
		user.setId(UUID.randomUUID().toString());
		userDao.insertUser(user);
	}

	public void updateUser(User user, String[] roleId) {
		user.setUsername(findUserById(user.getId()).getUsername());
		user.setPassword(findUserById(user.getId()).getPassword());
		Set<Role> roles = new HashSet<Role>();
		for (int i = 0; roleId != null && i < roleId.length; i++) {
			Role role = roleDao.findRoleById(roleId[i]);
			roles.add(role);
		}
		user.setRoles(roles);
		userDao.updateUser(user);
	}

	public void deleteUser(String id) {
		userDao.deleteUser(id);
	}

	public User findUserById(String id) {
		return userDao.findUserById(id);
	}

	public List<User> findAllUser() {
		return userDao.findAllUser();
	}

	public User login(String username, String password) {
		return userDao.login(username, password);
	}

	public List<Permission> getUserPermission(User user) {
		List<Permission> list = new ArrayList<Permission>();
		Set<Role> roles = user.getRoles();
		for (Role role : roles) {
			list.addAll(findRoleById(role.getId()).getPermissions());
		}
		return list;
	}
}

package cn.dk.utils;

import java.util.Map;
import org.apache.commons.beanutils.BeanUtils;

public class CopyBean {

	public static void Copy(Object bean, Map<String, String> properties){
		try {
			BeanUtils.populate(bean, properties);
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	}
}

package cn.dk.utils;

import com.mchange.v2.c3p0.ComboPooledDataSource;

public class DBUtils {

	private static ComboPooledDataSource source;

	static {
		source = new ComboPooledDataSource("mysql");
	}

	public static ComboPooledDataSource getDataSource() {
		return source;
	}
}

package cn.dk.web.manager;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@SuppressWarnings("serial")
public class ManagerServlet extends HttpServlet {

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		request.getRequestDispatcher("/WEB-INF/manager/manager.jsp").forward(
				request, response);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doGet(request, response);
	}
}

package cn.dk.web.manager;

import java.io.IOException;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import cn.dk.domain.Permission;
import cn.dk.service.Service;
import cn.dk.utils.CopyBean;

@SuppressWarnings("serial")
public class PermissionServlet extends HttpServlet {

	private Service service = new Service();

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		String method = request.getParameter("method");
		if (method.equals("showAllpermissoin"))
			showAllpermissoin(request, response);
		else if (method.equals("showInsertPermission"))
			showInsertPermission(request, response);
		else if (method.equals("insertPsermission"))
			insertPsermission(request, response);
		else if (method.equals("deletePermission"))
			deletePermission(request, response);
	}

	private void deletePermission(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		String permissionId = request.getParameter("id");
		try {
			service.deletePermission(permissionId);
			request.setAttribute("message", "删除权限成功");
		} catch (RuntimeException e) {
			request.setAttribute("message", "删除权限失败");
		}
		request.getRequestDispatcher("/WEB-INF/message/message.jsp").forward(
				request, response);
	}

	@SuppressWarnings("unchecked")
	private void insertPsermission(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		Permission permission = new Permission();
		try {
			CopyBean.Copy(permission, request.getParameterMap());
			service.insertPermission(permission);
			request.setAttribute("message", "添加权限成功");
		} catch (RuntimeException e) {
			request.setAttribute("message", "添加权限失败");
		}
		request.getRequestDispatcher("/WEB-INF/message/message.jsp").forward(
				request, response);
	}

	private void showInsertPermission(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		request.getRequestDispatcher("/WEB-INF/manager/addPermission.jsp")
				.forward(request, response);
	}

	private void showAllpermissoin(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		List<Permission> permission = service.findAllPermission();
		request.setAttribute("permission", permission);
		request.getRequestDispatcher("/WEB-INF/manager/permissionlist.jsp")
				.forward(request, response);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doGet(request, response);
	}

}

package cn.dk.web.manager;

import java.io.IOException;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import cn.dk.domain.Permission;
import cn.dk.domain.Resource;
import cn.dk.service.Service;
import cn.dk.utils.CopyBean;

@SuppressWarnings("serial")
public class ResourceServlet extends HttpServlet {

	private Service service = new Service();

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		String method = request.getParameter("method");
		if (method.equals("showAllresource"))
			showAllresource(request, response);
		else if (method.equals("showInsertResource"))
			showInsertResource(request, response);
		else if (method.equals("insertResource"))
			insertResource(request, response);
		else if (method.equals("showUpdateResource"))
			showUpdateResource(request, response);
		else if (method.equals("updateResource"))
			updateResource(request, response);
		else if (method.equals("deleteResource"))
			deleteResource(request, response);
	}

	private void deleteResource(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		String id = request.getParameter("id");
		try {
			service.deleteResource(id);
			request.setAttribute("message", "删除资源成功");
		} catch (RuntimeException e) {
			request.setAttribute("message", "删除资源失败");
		}
		request.getRequestDispatcher("/WEB-INF/message/message.jsp").forward(
				request, response);
	}

	@SuppressWarnings("unchecked")
	private void updateResource(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		Resource resource = new Resource();
		try {
			CopyBean.Copy(resource, request.getParameterMap());
			String permissionId = request.getParameter("pid");
			service.updateResource(resource, permissionId);
			request.setAttribute("message", "修改资源成功");
		} catch (RuntimeException e) {
			request.setAttribute("message", "修改资源失败，原因：" + e.getMessage());
		}
		request.getRequestDispatcher("/WEB-INF/message/message.jsp").forward(
				request, response);
	}

	private void showUpdateResource(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		List<Permission> permission = service.findAllPermission();
		String resourceId = request.getParameter("id");
		Resource resource = service.findResourceById(resourceId);
		request.setAttribute("permission", permission);
		request.setAttribute("resource", resource);
		request.getRequestDispatcher("/WEB-INF/manager/updateResource.jsp")
				.forward(request, response);
	}

	@SuppressWarnings("unchecked")
	private void insertResource(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		try {
			Resource resource = new Resource();
			CopyBean.Copy(resource, request.getParameterMap());
			String permissionId = request.getParameter("pid");
			service.insertResource(resource, permissionId);
			request.setAttribute("message", "添加资源成功");
		} catch (RuntimeException e) {
			request.setAttribute("message", "添加资源失败");
		}
		request.getRequestDispatcher("/WEB-INF/message/message.jsp").forward(
				request, response);
	}

	private void showInsertResource(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		List<Permission> permission = service.findAllPermission();
		request.setAttribute("permission", permission);
		request.getRequestDispatcher("/WEB-INF/manager/addResource.jsp")
				.forward(request, response);
	}

	private void showAllresource(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		List<Resource> resources = service.findAllResource();
		request.setAttribute("resources", resources);
		request.getRequestDispatcher("/WEB-INF/manager/resourcelist.jsp")
				.forward(request, response);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doGet(request, response);
	}

}

package cn.dk.web.manager;

import java.io.IOException;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import cn.dk.domain.Permission;
import cn.dk.domain.Role;
import cn.dk.service.Service;
import cn.dk.utils.CopyBean;

@SuppressWarnings("serial")
public class RoleServlet extends HttpServlet {

	private Service service = new Service();

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		String method = request.getParameter("method");
		if (method.equals("showAllRole"))
			showAllRole(request, response);
		else if (method.equals("showInsertRole"))
			showInsertRole(request, response);
		else if (method.equals("insertRole"))
			insertRole(request, response);
		else if (method.equals("showUpdateRole"))
			showUpdateRole(request, response);
		else if (method.equals("updateRole"))
			updateRole(request, response);
		else if (method.equals("deleteRole"))
			deleteRole(request, response);
	}

	private void deleteRole(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		String roleId = request.getParameter("id");
		try {
			service.deleteRole(roleId);
			request.setAttribute("message", "删除角色成功");
		} catch (RuntimeException e) {
			request.setAttribute("message", "删除角色失败，原因：" + e.getMessage());
		}
		request.getRequestDispatcher("/WEB-INF/message/message.jsp").forward(
				request, response);
	}

	@SuppressWarnings("unchecked")
	private void updateRole(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		Role role = new Role();
		try {
			CopyBean.Copy(role, request.getParameterMap());
			String[] permissionId = request.getParameterValues("pid");
			service.updateRole(role, permissionId);
			request.setAttribute("message", "修改角色成功");
		} catch (RuntimeException e) {
			request.setAttribute("message", "修改角色失败，原因：" + e.getMessage());
		}
		request.getRequestDispatcher("/WEB-INF/message/message.jsp").forward(
				request, response);
	}

	private void showUpdateRole(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		String roleId = request.getParameter("id");
		Role role = service.findRoleById(roleId);
		List<Permission> permission = service.findAllPermission();
		request.setAttribute("role", role);
		request.setAttribute("permission", permission);
		request.getRequestDispatcher("/WEB-INF/manager/updateRole.jsp")
				.forward(request, response);
	}

	@SuppressWarnings("unchecked")
	private void insertRole(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		Role role = new Role();
		try {
			CopyBean.Copy(role, request.getParameterMap());
			service.insertRole(role, null);
			request.setAttribute("message", "添加角色成功");
		} catch (RuntimeException e) {
			request.setAttribute("message", "添加角色失败，原因：" + e.getMessage());
		}
		request.getRequestDispatcher("/WEB-INF/message/message.jsp").forward(
				request, response);
	}

	private void showInsertRole(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		request.getRequestDispatcher("/WEB-INF/manager/addRole.jsp").forward(
				request, response);
	}

	private void showAllRole(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		List<Role> role = service.fineAllRole();
		request.setAttribute("role", role);
		request.getRequestDispatcher("/WEB-INF/manager/rolelist.jsp").forward(
				request, response);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doGet(request, response);
	}
}

package cn.dk.web.manager;

import java.io.IOException;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import cn.dk.domain.Role;
import cn.dk.domain.User;
import cn.dk.service.Service;
import cn.dk.utils.CopyBean;

@SuppressWarnings("serial")
public class UserServlet extends HttpServlet {

	private Service service = new Service();

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		String method = request.getParameter("method");
		if (method.equals("showAllUser"))
			showAllUser(request, response);
		else if (method.equals("showInsertUser"))
			showInsertUser(request, response);
		else if (method.equals("addUser"))
			addUser(request, response);
		else if (method.equals("showUpdateUser"))
			showUpdateUser(request, response);
		else if (method.equals("updateUser"))
			updateUser(request, response);
		else if (method.equals("deleteUser"))
			deleteUser(request, response);
	}

	private void deleteUser(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		String userId = request.getParameter("id");
		try {
			service.deleteUser(userId);
			request.setAttribute("message", "删除用户成功");
		} catch (RuntimeException e) {
			request.setAttribute("message", "删除用户失败");
		}
		request.getRequestDispatcher("/WEB-INF/message/message.jsp").forward(
				request, response);
	}

	@SuppressWarnings("unchecked")
	private void updateUser(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		User user = new User();
		try {
			CopyBean.Copy(user, request.getParameterMap());
			String[] roleId = request.getParameterValues("rid");
			service.updateUser(user, roleId);
			request.setAttribute("message", "修改用户成功");
		} catch (RuntimeException e) {
			request.setAttribute("message", "修改用户失败，原因：" + e.getMessage());
		}
		request.getRequestDispatcher("/WEB-INF/message/message.jsp").forward(
				request, response);
	}

	private void showUpdateUser(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		String userId = request.getParameter("id");
		User user = service.findUserById(userId);
		List<Role> role = service.fineAllRole();
		request.setAttribute("user", user);
		request.setAttribute("role", role);
		request.getRequestDispatcher("/WEB-INF/manager/updateUser.jsp")
				.forward(request, response);
	}

	@SuppressWarnings("unchecked")
	private void addUser(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		User user = new User();
		try {
			CopyBean.Copy(user, request.getParameterMap());
			service.insertUser(user, null);
			request.setAttribute("message", "添加用户成功");
		} catch (RuntimeException e) {
			request.setAttribute("message", "添加用户失败，原因：" + e.getMessage());
		}
		request.getRequestDispatcher("/WEB-INF/message/message.jsp").forward(
				request, response);
	}

	private void showInsertUser(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		request.getRequestDispatcher("/WEB-INF/manager/addUser.jsp").forward(
				request, response);
	}

	private void showAllUser(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		List<User> user = service.findAllUser();
		request.setAttribute("user", user);
		request.getRequestDispatcher("/WEB-INF/manager/userlist.jsp").forward(
				request, response);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doGet(request, response);
	}

}

package cn.dk.web;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import cn.dk.service.InitialService;

@SuppressWarnings("serial")
public class InitialServlet extends HttpServlet {

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		InitialService iniService = new InitialService();
		String message = null;
		try {
			message = iniService.initial();
			request.setAttribute("message", message);
		} catch (Exception e) {
			request.setAttribute("message", message);
		}
		request.getRequestDispatcher("/WEB-INF/message/message.jsp").forward(
				request, response);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doGet(request, response);
	}
}

package cn.dk.web;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import cn.dk.domain.User;
import cn.dk.service.Service;

@SuppressWarnings("serial")
public class Welcome extends HttpServlet {

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		request.getRequestDispatcher("/login/login.jsp").forward(request,
				response);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		Service service = new Service();
		String username = request.getParameter("username");
		String password = request.getParameter("password");
		User user = service.login(username, password);
		if (user != null) {
			request.getSession().setAttribute("user", user);
			response.sendRedirect(request.getContextPath() + "/index.jsp");
		} else {
			request.setAttribute("message", "用户名密码错误");
			request.getRequestDispatcher("/WEB-INF/message/message.jsp")
					.forward(request, response);
		}
	}
}

<%@ page language="java" pageEncoding="UTF-8"%>
<%@taglib uri="http://www.opensymphony.com/sitemesh/decorator" prefix="sitemesh-decorator"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
	<head>
		<title><sitemesh-decorator:title /></title>
		
		<style type="text/css">
	   		body{
	   			margin: 0px;
	   			padding: 0px;
	   			text-align: center;
	   		}
	   		#container{
	   				width: 980px;
	   				border: 1px solid gray;
	   		}
	   		#top{
	   			border-bottom: 1px solid gray;
	   		}
	   		#left{
	   			float: left;
	   			width: 150px;
	   			border-right: 1px solid gray;
	   		}
	   		#main{
	   			float: left;
	   			padding: 40px 0px 0px 40px;
	   		}
  		 </style>
	</head>

	<body>
		<br/><br/><br/>
		<div id="container">
	    	<div id="top">
	    		<h2>中浩集团网站后台管理系统</h2>
	    	</div>
	    	<div id="left">
	    		<br/><br/><br/>
	    		<a href="${pageContext.request.contextPath }/servlet/manager/ResourceServlet?method=showAllresource">资源管理</a><br/><br/><br/>
	    		<a href="${pageContext.request.contextPath }/servlet/manager/PermissionServlet?method=showAllpermissoin">权限管理</a><br/><br/><br/>
	    		<a href="${pageContext.request.contextPath }/servlet/manager/RoleServlet?method=showAllRole">角色管理</a><br/><br/><br/>
	    		<a href="${pageContext.request.contextPath }/servlet/manager/UserServlet?method=showAllUser">用户管理</a><br/><br/><br/>
	    	</div>
	    	<div id="main">
	    		<sitemesh-decorator:body></sitemesh-decorator:body>
	    	</div>
    	</div>
	</body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>登录页面</title>
  </head>
  
  <body>
    <form action="${pageContext.request.contextPath }/Welcome" method="post">
    	用户名：<input type="text" name="username"><br>
    	密码:<input type="password" name="password"><br>
    	<input type="submit" value="登录">
    </form>
  </body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>添加权限</title>
  </head>
  
  <body>
    <form action="${pageContext.request.contextPath }/servlet/manager/PermissionServlet?method=insertPsermission" method="post">
    <table>
    	<tr>
    		<td>权限名称</td>
    		<td>
    			<input type="text" name="name">
    		</td>
    	</tr>
    	
    	<tr>
    		<td>权限描述</td>
    		<td>
    			<textarea rows="3" cols="50" name="description"></textarea>
    		</td>
    	</tr>
    	
    	<tr>
    		<td></td>
    		<td>
    			<input type="submit" value="添加权限">
    		</td>
    	</tr>
    </table>
    </form>
  </body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>添加资额</title>
  </head>
  
  <body>
    <form action="${pageContext.request.contextPath }/servlet/manager/ResourceServlet?method=insertResource" method="post">
    <table>
    	<tr>
    		<td>资源uri</td>
    		<td>
    			<input type="text" name="uri">
    		</td>
    	</tr>
    	<tr>
    		<td>资源描述</td>
    		<td>
    			<textarea rows="3" cols="50" name="description"></textarea>
    		</td>
    	</tr>
    	<tr>
    		<td>资源控制权限</td>
    		<td>
    			<c:forEach var="p" items="${requestScope.permission}">
					<input type="radio" name="pid" value="${p.id }">${p.name }  
    			</c:forEach>
    		</td>
    	</tr>
    	<tr>
    		<td></td>
    		<td>
    			<input type="submit" value="添加资源">
    		</td>
    	</tr>
    </table>
    </form>
  </body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>添加角色</title>
  </head>
  
  <body>
    <form action="${pageContext.request.contextPath }/servlet/manager/RoleServlet?method=insertRole" method="post">
    <table>
    	<tr>
    		<td>角色名称</td>
    		<td>
    			<input type="text" name="name">
    		</td>
    	</tr>
    	<tr>
    		<td>角色描述</td>
    		<td>
    			<textarea rows="3" cols="50" name="description"></textarea>
    		</td>
    	</tr>
    	<tr>
    		<td></td>
    		<td>
    			<input type="submit" value="添加角色">
    		</td>
    	</tr>
    </table>
    </form>
  </body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>添加用户</title>
  </head>
  
  <body>
     <form action="${pageContext.request.contextPath }/servlet/manager/UserServlet?method=addUser" method="post">
    <table>
    	<tr>
    		<td>用户名称</td>
    		<td>
    			<input type="text" name="username">
    		</td>
    	</tr>
    	<tr>
    		<td>用户密码</td>
    		<td>
    			<input type="password" name="password">
    		</td>
    	</tr>
    	<tr>
    		<td></td>
    		<td>
    			<input type="submit" value="添加用户">
    		</td>
    	</tr>
    </table>
    </form>
  </body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>权限列表</title>
  </head>
  
  <body>
     <table width="90%">
    	<tr>
    		<td align="right">
    			<a href="${pageContext.request.contextPath }/servlet/manager/PermissionServlet?method=showInsertPermission">添加权限</a>
    		</td>
    	</tr>
    </table>
    
    <table frame="border" width="90%">
    	<tr>
    		<td>权限名称</td>
    		<td>权限描述</td>
    		<td>操作</td>
    	</tr>
    	
    	<c:forEach var="p" items="${requestScope.permission}">
    		<tr>
	    		<td>${p.name }</td>
	    		<td>${p.description }</td>
	    		<td>
	    			<a href="${pageContext.request.contextPath }/servlet/manager/PermissionServlet?method=deletePermission&id=${p.id }">删除</a>
	    		</td>
    		</tr>
    	</c:forEach>
    
    </table>
  </body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>资源管理</title>
  </head>
  
  <body>
     <table width="90%">
    	<tr>
    		<td align="right">
    			<a href="${pageContext.request.contextPath }/servlet/manager/ResourceServlet?method=showInsertResource">添加资源</a>
    		</td>
    	</tr>
    </table>
    <table frame="border" width="90%">
    	<tr>
    		<td>资源URI</td>
    		<td>资源描述</td>
    		<td>管理资源的权限</td>
    		<td>操作</td>
    	</tr>
    	<c:forEach var="resource" items="${requestScope.resources}">
    		<tr>
	    		<td>${resource.uri }</td>
	    		<td>${resource.description }</td>
	    		<td>${resource.permission.name }</td>
	    		<td>
	    			<a href="${pageContext.request.contextPath }/servlet/manager/ResourceServlet?method=showUpdateResource&id=${resource.id }">分配权限</a>
	    			<a href="${pageContext.request.contextPath }/servlet/manager/ResourceServlet?method=deleteResource&id=${resource.id }">删除</a>
	    		</td>
    		</tr>
    	</c:forEach>
    </table>
  </body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>My JSP 'rolelist.jsp' starting page</title>
  </head>
  
  <body>
      <table width="90%">
    	<tr>
    		<td align="right">
    			<a href="${pageContext.request.contextPath }/servlet/manager/RoleServlet?method=showInsertRole">添加角色</a>
    		</td>
    	</tr>
    </table>
    
    <table frame="border" width="90%">
    	<tr>
    		<td>角色名称</td>
    		<td>角色描述</td>
    		<td>角色拥有的权限</td>
    		<td>操作</td>
    	</tr>
    	<c:forEach var="r" items="${role}">
    		<tr>
	    		<td>${r.name }</td>
	    		<td>${r.description }</td>
	    		<td>
	    			<c:forEach var="p" items="${r.permissions}">
	    				${p.name }
	    			</c:forEach>
	    		</td>
	    		<td>
	    			<a href="${pageContext.request.contextPath }/servlet/manager/RoleServlet?method=showUpdateRole&id=${r.id }">分配权限</a>
	    			<a href="${pageContext.request.contextPath }/servlet/manager/RoleServlet?method=deleteRole&id=${r.id }">删除</a>
	    		</td>
    		</tr>
    	</c:forEach>
    
    </table>
  </body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>分配权限</title>
  </head>
  
  <body>
    <form action="${pageContext.request.contextPath }/servlet/manager/ResourceServlet?method=updateResource" method="post">
    <table>
    	<tr>
    		<td>资源uri</td>
    		<td>
    			<input type="text" name="uri" value="${requestScope.resource.uri }">
    		</td>
    	</tr>
    	<tr>
    		<td>资源描述</td>
    		<td>
    			<textarea rows="3" cols="50" name="description">${requestScope.resource.description }</textarea>
    		</td>
    	</tr>
    	<tr>
    		<td>资源控制权限</td>
    		<td>
    			<c:forEach var="p" items="${requestScope.permission}">
					<input type="radio" name="pid" value="${p.id }" ${p.id==requestScope.resource.permission.id?'checked':'' }>${p.name } 
    			</c:forEach>
    		</td>
    	</tr>
    	<tr>
    		<td><input type="hidden" value="${requestScope.resource.id }" name="id"></td>
    		<td>
    			<input type="submit" value="添加资源">
    		</td>
    	</tr>
    </table>
    </form>
  </body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>分配权限</title>
  </head>
  
  <body>
     <form action="${pageContext.request.contextPath }/servlet/manager/RoleServlet?method=updateRole" method="post">
    <input type="hidden" name="id" value="${requestScope.role.id }">
    <input type="hidden" name="name" value="${requestScope.role.name }">
    <input type="hidden" name="description" value="${requestScope.role.description }">
    <table frame="border" width="80%">
    	<tr>
    		<td>角色名称</td>
    		<td>${requestScope.role.name }</td>
    	</tr>
    	
    	<tr>
    		<td>角色描述</td>
    		<td>${requestScope.role.description }</td>
    	</tr>
    	
    	<tr>
    		<td>拥有的权限</td>
    		<td>
    			<c:forEach var="p" items="${requestScope.permission}">
    				<c:forEach var="rp" items="${requestScope.role.permissions}">
    					<c:if test="${p.id==rp.id}"><c:set var="choice" value="true" /></c:if>
    				</c:forEach>
    				<input type="checkbox" value="${p.id }" name="pid" ${choice=='true'?'checked':'' } />${p.name }
    				<c:remove var="choice" />
    			</c:forEach>
    		</td>
    	</tr>
    	<tr>
    		<td></td>
    		<td><input type="submit" value="更新角色"></td>
    	</tr>
    </table>
    </form>
  </body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
	<head>
		<title>分配角色</title>
	</head>

	<body>
		<form action="${pageContext.request.contextPath }/servlet/manager/UserServlet?method=updateUser" method="post">
			<input type="hidden" name="id" value="${requestScope.user.id }" >
			<table frame="border" width="80%">
				<tr>
					<td>用户名称</td>
					<td>${requestScope.user.username }</td>
				</tr>
				<tr>
					<td>角色信息</td>
					<td>
						<c:forEach var="r" items="${requestScope.role}">
							<c:forEach var="ur" items="${requestScope.user.roles}">
								<c:if test="${r.id==ur.id}"><c:set var="choice" value="true" /></c:if>
							</c:forEach>
							<input type="checkbox" value="${r.id }" name="rid" ${choice=='true'?'checked':'' } />${r.name }
							<c:remove var="choice" />
						</c:forEach>
					</td>
				</tr>
				<tr>
					<td></td>
					<td><input type="submit" value="更新用户"></td>
				</tr>
			</table>
		</form>
	</body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>用户列表</title>
  </head>
  
  <body>
     <table width="90%">
    	<tr>
    		<td align="right">
    			<a href="${pageContext.request.contextPath }/servlet/manager/UserServlet?method=showInsertUser">添加用户</a>
    		</td>
    	</tr>
    </table>
    
    <table frame="border" width="90%">
    	<tr>
    		<td>用户名称</td>
    		<td>用户拥有的角色</td>
    		<td>操作</td>
    	</tr>
    	<c:forEach var="u" items="${requestScope.user}">
    		<tr>
	    		<td>${u.username }</td>
	    		<td>
	    			<c:forEach var="r" items="${u.roles}">
	    				${r.name }
	    			</c:forEach>
	    		</td>
	    		<td>
	    			<a href="${pageContext.request.contextPath }/servlet/manager/UserServlet?method=showUpdateUser&id=${u.id }">分配角色</a>
	    			<a href="${pageContext.request.contextPath }/servlet/manager/UserServlet?method=deleteUser&id=${u.id }">删除</a>
	    		</td>
    		</tr>
    	</c:forEach>
    </table>
  </body>
</html>

package cn.dk.filter;

import java.io.IOException;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class CharacterFilter implements Filter {

	public void destroy() {
	}

	public void doFilter(ServletRequest r, ServletResponse re, FilterChain chain)
			throws IOException, ServletException {
		final HttpServletRequest request = (HttpServletRequest) r;
		HttpServletResponse response = (HttpServletResponse) re;
		response.setCharacterEncoding("utf-8");
		chain.doFilter((ServletRequest) Proxy.newProxyInstance(
				CharacterFilter.class.getClassLoader(), request.getClass()
						.getInterfaces(), new InvocationHandler() {
					@SuppressWarnings("unchecked")
					public Object invoke(Object proxy, Method method,
							Object[] args) throws Throwable {
						if (method.getName().equals("getParameter")) {
							String value = (String) method
									.invoke(request, args);
							String newValue = new String(value
									.getBytes("iso8859-1"), "utf-8");
							return newValue;
						} else if (method.getName().equals("getParameterMap")) {
							Map<String, String[]> values = (Map<String, String[]>) method
									.invoke(request, args);
							Map<String, String[]> newValues = new HashMap<String, String[]>();
							for (Map.Entry<String, String[]> entry : values
									.entrySet()) {
								String[] value = entry.getValue();
								String[] newValue = new String[value.length];
								for (int i = 0; i < value.length; i++) {
									newValue[i] = new String(value[i]
											.getBytes("iso8859-1"), "utf-8");
								}
								newValues.put(entry.getKey(), newValue);
							}
							return newValues;
						} else if (method.getName()
								.equals("getParameterValues")) {
							String[] values = (String[]) method.invoke(request,
									args);
							if (values == null)
								return null;
							String[] newValues = new String[values.length];
							for (int i = 0; i < values.length; i++) {
								newValues[i] = new String(values[i]
										.getBytes("iso8859-1"), "utf-8");
							}
							return newValues;
						}
						return method.invoke(request, args);
					}
				}), response);
	}

	public void init(FilterConfig filterConfig) throws ServletException {
	}
}

package cn.dk.filter;

import java.io.IOException;
import java.util.List;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import cn.dk.domain.Permission;
import cn.dk.domain.Resource;
import cn.dk.domain.User;
import cn.dk.service.Service;

public class PermissionFilter implements Filter {

	public void destroy() {
	}

	public void doFilter(ServletRequest r, ServletResponse re, FilterChain chain)
			throws IOException, ServletException {

		HttpServletRequest request = (HttpServletRequest) r;
		HttpServletResponse response = (HttpServletResponse) re;
		Service service = new Service();

		// 判断要访问的资源是否需要权限
		String requestURI = request.getRequestURI();
		requestURI = requestURI.substring(1);
		Resource resource = service.findResourceByURI(requestURI);
		// 如果不需要权限放行
		if (resource == null) {
			chain.doFilter(request, response);
			return;
		}
		Permission permission = resource.getPermission();
		// 如果需要权限验证用户是否登陆
		Object attribute = request.getSession().getAttribute("user");
		// 如果没有登录则跳转登录页面
		if (attribute == null) {
			request.getRequestDispatcher("/login/login.jsp").forward(request,
					response);
			return;
		}
		// 如果已经登录获取用户权限
		User user = (User) attribute;
		List<Permission> userPermission = service.getUserPermission(user);
		// 如果有权访问则放行
		if (userPermission.contains(permission)) {
			chain.doFilter(request, response);
			return;
		}
		// 如果没权访问则跳转消息显示页面
		request.setAttribute("message", "对不起您没有权限");
		request.getRequestDispatcher("/WEB-INF/message/message.jsp").forward(
				request, response);
	}

	public void init(FilterConfig filterConfig) throws ServletException {
	}
}