Shiro安全框架的说明及配置入门

Shiro是什么?

Shiro是一个非常强大的,易于使用的,开源的,权限框架。它包括了权限校验,权限授予,会话管理,安全加密等组件

什么时候使用它呢?

如果你是设计RBAC基础系统,需要编写大量用于权限控制的代码时,使用Shiro开源大大减少工作量。

使用到的包:

下载路径:

http://shiro.apache.org/download.html

Shiro结构图:

 

 入门配置:

1.配置流程图

配置文件代码:

注意:配置文件的后缀一定要是  .ini

##[users]   #用于配置用户名信息
##   用户名= 密码, 角色1, 角色2, …, 角色N
##[roles]   #用于配置角色信息
##   角色名= 权限1, 权限2, …, 权限N   #全部权限使用 * (星号)
[users]
  admin=123456,role_admin,role_edu
[roles]
  role_admin = user:list,user:create,user:edit,user:delete
  role_edu = edu:list,edu:create

测试代码:

package cn.gzsxt.shiro;

import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.config.IniSecurityManagerFactory;
import org.apache.shiro.mgt.SecurityManager;
import org.apache.shiro.subject.Subject;

public class ShiroTest {
    
    public static void main(String[] args) {
        //第一步:创建SecurityManager
        //shiro框架读取配置文件,如果在源码夹下,需要在前缀加上classpath
        IniSecurityManagerFactory imf=new IniSecurityManagerFactory("classpath:shiro.ini");
        SecurityManager securityManager = imf.createInstance();
        
        //第二步:创建一个身份对象Subject
        SecurityUtils.setSecurityManager(securityManager);
        Subject subject = SecurityUtils.getSubject();
        
        UsernamePasswordToken token =new UsernamePasswordToken("admin1","123456");
        //第三步:校验参数
        try {
            Subject resultSubject = securityManager.login(subject,token );
//            System.out.println(resultSubject.getPrincipal());
//            boolean hasRole = resultSubject.hasRole("role_admin");
//            System.out.println(hasRole);
            
            boolean authenticated = resultSubject.isAuthenticated();
            System.out.println(authenticated);
            
        } catch (AuthenticationException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

Realm机制的必要性:

Shiro是通过Realm机制,实现将配置用户信息存放在数据库等储存系统中

通过Realm可以从数据库里面获得用户的验证信息

配置文件代码:

[main]
#声明realm对象
myRealm=cn.gzsxt.realm.MyRealm


#指定securityManager的realm对象
securityManager.realms=$myRealm

编写Realm

package cn.gzsxt.realm;

import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;

public class MyRealm extends AuthorizingRealm{
    /**
     * 权限校验
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        // TODO Auto-generated method stub
        System.out.println("账号名:"+token.getPrincipal());
        if ("admin".equals(token.getPrincipal())) {
            SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(token.getPrincipal(),"123",this.getName());
            return info;
        }
        return null;
    }
    /**
     * 权限授权
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection token) {
        // TODO Auto-generated method stub
        return null;
    }    

}

测试代码:

package cn.gzsxt.shiro;

import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.config.IniSecurityManagerFactory;
import org.apache.shiro.mgt.SecurityManager;
import org.apache.shiro.subject.Subject;

public class ShiroTest {

    public static void main(String[] args) {
        
        IniSecurityManagerFactory factory = new IniSecurityManagerFactory("classpath:Shiro.ini");
        SecurityManager securityManager = factory.createInstance();
        SecurityUtils.setSecurityManager(securityManager);
        Subject subject = SecurityUtils.getSubject();
        
        AuthenticationToken token = new UsernamePasswordToken("admin","123");
        Subject resultSubject = securityManager.login(subject, token );
        
        boolean authenticated = resultSubject.isAuthenticated();
        System.out.println(authenticated);
    }   
}

附:加密

先创建一个Md5帮助类,得到加密后的密码,便于测试

md5帮助类代码:

package cn.gzsxt.utils;

import org.apache.shiro.crypto.hash.SimpleHash;
import org.apache.shiro.util.ByteSource;

public class Md5Util {

    public static void main(String[] args) {
        ByteSource salt = ByteSource.Util.bytes("123");
        SimpleHash sh = new SimpleHash("md5", "123", salt,1);
        
        String target = sh.toString();
        System.out.println(target);
    }
    
}

Realm处代码

 

posted @ 2019-05-09 21:39  番茄加蛋拌饭  阅读(180)  评论(0编辑  收藏  举报