Shiro 自定义登陆、授权、拦截器
Shiro
- 登陆、授权、拦截
- 按钮权限控制
一、目标
- Maven+Spring+shiro
- 自定义登陆、授权
- 自定义拦截器
- 加载数据库资源构建拦截链
二、代码
1、Pom.xml
1 <properties>
2 <spring.version>4.3.4.RELEASE</spring.version>
3 </properties>
4 <dependency>
5 <groupId>junit</groupId>
6 <artifactId>junit</artifactId>
7 <version>4.9</version>
8 </dependency>
9 <dependency>
10 <groupId>commons-logging</groupId>
11 <artifactId>commons-logging</artifactId>
12 <version>1.1.3</version>
13 </dependency>
14 <dependency>
15 <groupId>org.apache.shiro</groupId>
16 <artifactId>shiro-core</artifactId>
17 <version>1.2.2</version>
18 </dependency>
19 <dependency>
20 <groupId>org.apache.shiro</groupId>
21 <artifactId>shiro-spring</artifactId>
22 <version>1.2.2</version>
23 </dependency>
24 <dependency>
25 <groupId>javax.servlet</groupId>
26 <artifactId>javax.servlet-api</artifactId>
27 <version>3.0.1</version>
28 <scope>provided</scope>
29 </dependency>
30 <dependency>
31 <groupId>org.springframework</groupId>
32 <artifactId>spring-web</artifactId>
33 <version>${spring.version}</version>
34 </dependency>
35 <dependency>
36 <groupId>org.apache.shiro</groupId>
37 <artifactId>shiro-ehcache</artifactId>
38 <version>1.2.2</version>
39 </dependency>
40 <dependency>
41 <groupId>org.springframework</groupId>
42 <artifactId>spring-context</artifactId>
43 <version>${spring.version}</version>
44 </dependency>
45 <dependency>
46 <groupId>org.apache.shiro</groupId>
47 <artifactId>shiro-web</artifactId>
48 <version>1.2.2</version>
49 </dependency>
50 <dependency>
51 <groupId>net.sf.ehcache</groupId>
52 <artifactId>ehcache</artifactId>
53 <version>2.10.1</version>
54 </dependency>
2、web.xml
Servlet拦截访问,使用注解更方便,需要删除项目中的servlet使用javax.servlet-api 3.0 包
1 package com.cyd.shiro;
2
3 import java.io.IOException;
4
5 import javax.servlet.ServletException;
6 import javax.servlet.annotation.WebServlet;
7 import javax.servlet.http.HttpServlet;
8 import javax.servlet.http.HttpServletRequest;
9 import javax.servlet.http.HttpServletResponse;
10
11 import org.apache.shiro.SecurityUtils;
12 import org.apache.shiro.authc.AuthenticationException;
13 import org.apache.shiro.authc.IncorrectCredentialsException;
14 import org.apache.shiro.authc.UnknownAccountException;
15 import org.apache.shiro.authc.UsernamePasswordToken;
16 import org.apache.shiro.subject.Subject;
17 import org.apache.shiro.web.util.SavedRequest;
18 import org.apache.shiro.web.util.WebUtils;
19 import org.junit.Test;
20
21 @WebServlet(name = "loginServlet", urlPatterns = "/loginController")
22 public class LoginServlet extends HttpServlet {
23 @Override
24 protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
25 req.getRequestDispatcher("login.jsp").forward(req, resp);
26 }
27
28 @Override
29 protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
30 System.out.println(LoginServlet.class.toString());
31 String error = null;
32 String username = req.getParameter("username");
33 String password = req.getParameter("password");
34 Subject subject = SecurityUtils.getSubject();
35 UsernamePasswordToken token = new UsernamePasswordToken(username, password);
36 try {
37 subject.login(token);
38 } catch (UnknownAccountException e) {
39 error = "用户名/密码错误";
40 } catch (IncorrectCredentialsException e) {
41 error = "用户名/密码错误";
42 } catch (AuthenticationException e) {
43 // 其他错误,比如锁定,如果想单独处理请单独catch处理
44 error = "其他错误:" + e.getMessage();
45 }
46 if (error != null) {// 出错了,返回登录页面
47 req.setAttribute("error", error);
48 req.getRequestDispatcher("login.jsp").forward(req, resp);
49 } else {// 登录成功
50 //跳转到拦截登陆前的地址
51 SavedRequest request=WebUtils.getSavedRequest(req);
52 String url =request.getRequestURI();
53 req.getRequestDispatcher(url.substring(url.lastIndexOf('/'))).forward(req, resp);
54 }
55 }
56
57 }
3、Spring-shiro.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util-4.2.xsd">
<context:component-scan base-package="com.cyd.shiro.*"></context:component-scan>
<!-- Shiro的Web过滤器 -->
<bean id="shiroFilter" class="com.cyd.shiro.ExtendShiroFilterFactoryBean">
<property name="securityManager" ref="securityManager" />
<property name="loginUrl" value="/login.jsp" />
<!-- <property name="successUrl" value="/index.jsp" /> -->
<property name="unauthorizedUrl" value="/unauthorized.jsp" />
<property name="filters">
<util:map>
<!-- <entry key="onperms" value-ref="URLPermissionsFilter" /> -->
<entry key="onrole" value-ref="ExtendRolesAuthorizationFilter" />
</util:map>
</property>
<property name="filterChainDefinitions">
<value>
/unauthorized.jsp = anon
/logoutController=anon
/login.jsp=authc
</value>
</property>
</bean>
<!-- 安全管理器 -->
<bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">
<property name="realm" ref="myRealm" />
<property name="cacheManager" ref="cacheManager" />
</bean>
<!-- 自定义认证,授权 -->
<bean id="myRealm" class="com.cyd.shiro.AdminRealm"></bean>
<!-- 注册ehcache,不然每次访问都要登陆 -->
<bean id="cacheManager" class="org.apache.shiro.cache.ehcache.EhCacheManager">
<property name="cacheManagerConfigFile" value="classpath:ehcache.xml" />
</bean>
<!-- 自定义鉴权拦截器 -->
<bean id="URLPermissionsFilter" class="com.cyd.shiro.URLPermissionsFilter" />
<bean id="ExtendRolesAuthorizationFilter" class="com.cyd.shiro.ExtendRolesAuthorizationFilter" />
</beans>
4、Ehcache.xml 缓存
<?xml version="1.0" encoding="UTF-8"?>
<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../config/ehcache.xsd">
<diskStore path="java.io.tmpdir"/>
<defaultCache
maxElementsInMemory="10000"
eternal="false"
timeToIdleSeconds="600"
timeToLiveSeconds="600"
overflowToDisk="true"
maxElementsOnDisk="10000000"
diskPersistent="false"
diskExpiryThreadIntervalSeconds="120"
memoryStoreEvictionPolicy="LRU"
/>
<!--
内存中最多可以存储多少个数据
是否永久有效
空闲时间
存活时间
内存空间不够是否存储到磁盘
磁盘最大存储个数
服务器重启,磁盘数据是否需要
线程
淘汰策略(最近最少使用)
-->
</ehcache>
5、登陆Servlet
package com.cyd.shiro;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.IncorrectCredentialsException;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.subject.Subject;
import org.apache.shiro.web.util.SavedRequest;
import org.apache.shiro.web.util.WebUtils;
@WebServlet(name = "loginServlet", urlPatterns = "/loginController")
public class LoginServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
req.getRequestDispatcher("login.jsp").forward(req, resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
System.out.println(LoginServlet.class.toString());
String error = null;
String username = req.getParameter("username");
String password = req.getParameter("password");
Subject subject = SecurityUtils.getSubject();
UsernamePasswordToken token = new UsernamePasswordToken(username, password);
try {
subject.login(token);
} catch (UnknownAccountException e) {
error = "用户名/密码错误";
} catch (IncorrectCredentialsException e) {
error = "用户名/密码错误";
} catch (AuthenticationException e) {
// 其他错误,比如锁定,如果想单独处理请单独catch处理
error = "其他错误:" + e.getMessage();
}
if (error != null) {// 出错了,返回登录页面
req.setAttribute("error", error);
req.getRequestDispatcher("login.jsp").forward(req, resp);
} else {// 登录成功
//跳转到拦截登陆前的地址
SavedRequest request=WebUtils.getSavedRequest(req);
String url =request.getRequestURI();
req.getRequestDispatcher(url.substring(url.lastIndexOf('/'))).forward(req, resp);
}
}
}
6、自定义登陆、授权。
根据需求自定义登陆异常。从数据库查询出当前用户拥有的权限并授权
1 package com.cyd.shiro;
2
3 import java.util.HashSet;
4 import java.util.LinkedList;
5 import java.util.List;
6 import java.util.Set;
7
8 import org.apache.shiro.authc.AuthenticationException;
9 import org.apache.shiro.authc.AuthenticationInfo;
10 import org.apache.shiro.authc.AuthenticationToken;
11 import org.apache.shiro.authc.SimpleAuthenticationInfo;
12 import org.apache.shiro.authc.UnknownAccountException;
13 import org.apache.shiro.authz.AuthorizationInfo;
14 import org.apache.shiro.authz.SimpleAuthorizationInfo;
15 import org.apache.shiro.realm.AuthorizingRealm;
16 import org.apache.shiro.subject.PrincipalCollection;
17 import org.springframework.beans.factory.annotation.Autowired;
18
19 import com.cyd.helloworld.SysRoles;
20 import com.cyd.helloworld.SysUsers;
21 import com.cyd.shiro.admin.SysUsersService;
22
23 public class AdminRealm extends AuthorizingRealm {
24
25 @Autowired
26 private SysUsersService sysusersservice;
27 // 认证登陆
28 @Override
29 protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
30 System.out.println("do doGetAuthenticationInfo");
31 String username = (String) token.getPrincipal();
32 SysUsers user = sysusersservice.getSysUsers(username);
33 if (user == null) {
34 throw new UnknownAccountException();// 没找到帐号
35 }
36 SimpleAuthenticationInfo authenticationInfo = new SimpleAuthenticationInfo(user.getUserName(), // 用户名
37 user.getPassWorld(), // 密码
38 getName() // realm name
39 );
40 return authenticationInfo;
41 }
42
43 // 用户授权
44 @Override
45 protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
46 System.out.println("do doGetAuthorizationInfo");
47 String username = (String)principals.getPrimaryPrincipal();
48 SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo();
49 //从数据库加载当前用户的角色,例如:[admin]
50 authorizationInfo.setRoles(new HashSet<String>(sysusersservice.getSysRoles(username)));
51 //从数据库加载当前用户可以访问的资源,例如:[index.jsp, abc.jsp]
52 authorizationInfo.setStringPermissions(new HashSet<String>(sysusersservice.getSysResource(username)));
53
54 return authorizationInfo;
55 }
56 }
7、自定义拦截器。
重写拦截器是因为shiro 验证是否有权限访问是需要当前用户拥有拦截器链的所有权限。一般需求只需要拥有部分权限即可。
角色验证拦截,hasRole和hasAllRoles 验证是否有权限。
1 package com.cyd.shiro;
2
3 import java.io.IOException;
4 import java.util.Set;
5
6 import javax.servlet.ServletRequest;
7 import javax.servlet.ServletResponse;
8
9 import org.apache.shiro.subject.Subject;
10 import org.apache.shiro.util.CollectionUtils;
11 import org.apache.shiro.web.filter.authz.RolesAuthorizationFilter;
12
13 /**
14 * 通过角色验证权限
15 * @author chenyd
16 * 2017年11月21日
17 */
18 public class ExtendRolesAuthorizationFilter extends RolesAuthorizationFilter{
19
20 @Override
21 public boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue) throws IOException {
22
23 System.out.println(ExtendRolesAuthorizationFilter.class.toString());
24 Subject subject = getSubject(request, response);
25 String[] rolesArray = (String[]) mappedValue;
26
27 if (rolesArray == null || rolesArray.length == 0) {
28 //no roles specified, so nothing to check - allow access.
29 return true;
30 }
31 //AbstractFilter
32 Set<String> roles = CollectionUtils.asSet(rolesArray);
33
34 boolean flag=false;
35 for(String role: roles){
36 if(subject.hasRole(role)){
37 flag=true;
38 break;
39 }
40 }
41 return flag;
42 }
43 }
url拦截校验,isPermitted和isPermittedAll验证是否有权限访问,
1 package com.cyd.shiro;
2
3 import java.io.IOException;
4
5 import javax.servlet.ServletRequest;
6 import javax.servlet.ServletResponse;
7 import javax.servlet.http.HttpServletRequest;
8
9 import org.apache.shiro.subject.Subject;
10 import org.apache.shiro.web.filter.authz.PermissionsAuthorizationFilter;
11 /**
12 * 通过字符串验证权限
13 * @author chenyd
14 * 2017年11月21日
15 */
16 public class URLPermissionsFilter extends PermissionsAuthorizationFilter {
17
18 /**
19 * mappedValue 访问该url时需要的权限
20 * subject.isPermitted 判断访问的用户是否拥有mappedValue权限
21 * 重写拦截器,只要符合配置的一个权限,即可通过
22 */
23 @Override
24 public boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue)
25 throws IOException {
26 System.out.println(URLPermissionsFilter.class.toString());
27 Subject subject = getSubject(request, response);
28 // DefaultFilterChainManager
29 // PathMatchingFilterChainResolver
30 String[] perms = (String[]) mappedValue;
31 boolean isPermitted = false;
32 if (perms != null && perms.length > 0) {
33 for (String str : perms) {
34 if (subject.isPermitted(str)) {
35 isPermitted = true;
36 }
37 }
38 }
39
40 return isPermitted;
41 }
42 }
8、加载数据库资源构建拦截器链
1 package com.cyd.shiro;
2
3 import java.util.Map;
4
5 import org.apache.shiro.config.Ini;
6 import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
7 import org.apache.shiro.util.CollectionUtils;
8 import org.apache.shiro.web.config.IniFilterChainResolverFactory;
9 import org.springframework.beans.factory.annotation.Autowired;
10
11 import com.cyd.shiro.admin.SysUsersService;
12
13 public class ExtendShiroFilterFactoryBean extends ShiroFilterFactoryBean{
14
15 @Autowired
16 private SysUsersService sysusersservice;
17 //PathMatchingFilter
18 @Override
19 public void setFilterChainDefinitions(String definitions) {
20 //数据库中获取权限,{/index.jsp=authc,onrole["admin2","admin"], /abc.jsp=authc,onrole["admin2","admin"]}
21 Map<String, String> otherChains = sysusersservice.getFilterChain();
22 Ini ini = new Ini();
23 ini.load(definitions);
24 Ini.Section section = ini.getSection(IniFilterChainResolverFactory.URLS);
25 if (CollectionUtils.isEmpty(section)) {
26 section = ini.getSection(Ini.DEFAULT_SECTION_NAME);
27 }
28 section.putAll(otherChains);
29 setFilterChainDefinitionMap(section);
30 }
31
32 }
三、 学习笔记
1、INI文件配置
[users] #提供了对用户/密码及其角色的配置,用户名=密码,角色1,角色2
zhang=123,admin
[roles] #提供了角色及权限之间关系的配置,角色=权限1,权限2
admin=index.jsp
[urls]
#配置拦截器链,/** 为拦截器链名称(filterChain),authc,roles[admin],perms["index.jsp"]拦截器列表名
/login.jsp=anon
/loginController=anon
/unauthorized.jsp=anon
/**=authc,roles[admin],perms["index.jsp"]
2、拦截器链
Shiro的所有拦截器链名定义在源码DefaultFilter中。
anon | 例子/admins/**=anon 没有参数,表示可以匿名使用。 |
authc | 例如/admins/user/**=authc表示需要认证(登录)才能使用,没有参数 |
roles |
例子/admins/user/**=roles[admin],参数可以写多个,多个时必须加上引号, 并且参数之间用逗号分割,当有多个参数时,例如admins/user/**=roles["admin,guest"], 每个参数通过才算通过,相当于hasAllRoles()方法。 |
perms |
例子/admins/user/**=perms[user:add:*],参数可以写多个,多个时必须加上引号,并且参数之间用逗号分割, 例如/admins/user/**=perms["user:add:*,user:modify:*"],当有多个参数时必须每个参数都通过才通过, 想当于isPermitedAll()方法。 |
rest |
例子/admins/user/**=rest[user],根据请求的方法,相当于/admins/user/**=perms[user:method] , 其中method为post,get,delete等。 |
port |
例子/admins/user/**=port[8081],当请求的url的端口不是8081是跳转到schemal://serverName:8081?queryString, 其中schmal是协议http或https等,serverName是你访问的host,8081是url配置里port的端口,queryString是你访问的url里的?后面的参数。 |
authcBasic |
例如/admins/user/**=authcBasic没有参数表示httpBasic认证 |
ssl |
例子/admins/user/**=ssl没有参数,表示安全的url请求,协议为https |
user |
例如/admins/user/**=user没有参数表示必须存在用户,当登入操作时不做检查 |
注:anon,authcBasic,auchc,user是认证过滤器,
perms,roles,ssl,rest,port是授权过滤器
3、拦截器链源码类关系图
① NameableFilter有一个name属性,定义每一个filter的名字。
② OncePerRequestFilter保证客户端请求后该filter的doFilter只会执行一次。
doFilterInternal非常重要,在shiro整个filter体系中的核心方法及实质入口。另外,shiro是通过在request中设置一个该filter特定的属性值来保证该filter只会执行一次的。
③ AdviceFilter中主要是对doFilterInternal做了更细致的切分。
springmvc中的Interceptor,doFilterInternal会先调用preHandle做一些前置判断,如果返回false则filter链不继续往下执行,
④ AccessControlFilter中的对onPreHandle方法做了进一步细化。
isAccessAllowed方法和onAccessDenied方法达到控制效果。这两个方法都是抽象方法,由子类去实现。到这一层应该明白。isAccessAllowed和onAccessDenied方法会影响到onPreHandle方法,而onPreHandle方法会影响到preHandle方法,而preHandle方法会达到控制filter链是否执行下去的效果。所以如果正在执行的filter中isAccessAllowed和onAccessDenied都返回false,则整个filter控制链都将结束,不会到达目标方法(客户端请求的接口),而是直接跳转到某个页面(由filter定义的,将会在authc中看到)。
⑤ FormAuthenticationFiltershiro提供的登录的filter,
saveRequestAndRedirectToLogin保存request并拦截到登陆页面,登陆成功后可从WebUtils.getSavedRequest(req);中取出。
四、未实现的功能
- 动态URL权限控制。当修改权限时,重新加载拦截器链。
- 密码加密
- 记住我
- 在线人数控制
- 集成验证码
五、参考链接
- spring mvc整合shiro登录 权限验证 http://blog.csdn.net/rongku/article/details/51336424
- Shiro(4)默认鉴权与自定义鉴权 http://blog.csdn.net/zhengwei223/article/details/9981741
- 拦截器机制-跟我学shiro http://jinnianshilongnian.iteye.com/blog/2025656
- shiro Filter--拦截器源码解释 https://www.cnblogs.com/yoohot/p/6085830.html
- 动态URL http://blog.csdn.net/shadowsick/article/details/39001273
- 重写shirofilterbean方式加载数据库资源权限 http://blog.csdn.net/qq_18333833/article/details/70243620