Shrio登陆验证实例详细解读

jopen 8年前

     摘要:本文采用了Spring+SpringMVC+Mybatis+Shiro+Msql来写了一个登陆验证的实例,下面来看看过程吧!整个工程基于Mavevn来创建,运行环境为JDK1.6+WIN7+tomcat7.

这里主要说了Shiro的搭建过程,Spring+SpringMVC+Mybatis的搭建过可以看这里Spring+Mybatis+SpringMVC+Maven+MySql搭建实例

整体工程免费下载:http://download.csdn.net/detail/evankaka/9331135

最终效果如下:


工程整体的目录如下:

java代码如下:


配置文件如下:


页面资源如下:



好了,下面来简单说下过程吧!

准备工作:

先建表:

drop table if exists user;   CREATE TABLE `user` (    `id` int(11) primary key auto_increment,    `name` varchar(20)  NOT NULL,    `age` int(11) DEFAULT NULL,    `birthday` date DEFAULT NULL,    `password` varchar(20)  NOT NULL  ) ENGINE=InnoDB DEFAULT CHARSET=utf8;     insert into user values(1,'lin',12,'2013-12-01','123456');   insert into user values(2,'apple',34,'1999-12-01','123456');   insert into user values(3,'evankaka',23,'2017-12-01','123456');

建好后,新建一个Maven的webApp的工程,记得把结构设置成上面的那样!

下面来看看一些代码和配置

1、POM文件

注意不要少导包了,如果项目出现红叉,一般都是JDK版本的设置问题,自己百度一下就可以解决

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">   <modelVersion>4.0.0</modelVersion>   <groupId>com.lin</groupId>   <artifactId>ShiroLearn1</artifactId>   <packaging>war</packaging>   <version>0.0.1-SNAPSHOT</version>   <name>ShiroLearn1 Maven Webapp</name>   <url>http://maven.apache.org</url>   <properties>    <!-- spring版本号 -->    <spring.version>3.2.8.RELEASE</spring.version>    <!-- log4j日志文件管理包版本 -->    <slf4j.version>1.6.6</slf4j.version>    <log4j.version>1.2.12</log4j.version>    <!-- junit版本号 -->    <junit.version>4.10</junit.version>    <!-- mybatis版本号 -->    <mybatis.version>3.2.1</mybatis.version>   </properties>   <dependencies>    <!-- 添加Spring依赖 -->    <dependency>     <groupId>org.springframework</groupId>     <artifactId>spring-core</artifactId>     <version>${spring.version}</version>    </dependency>    <dependency>     <groupId>org.springframework</groupId>     <artifactId>spring-webmvc</artifactId>     <version>${spring.version}</version>    </dependency>    <dependency>     <groupId>org.springframework</groupId>     <artifactId>spring-context</artifactId>     <version>${spring.version}</version>    </dependency>    <dependency>     <groupId>org.springframework</groupId>     <artifactId>spring-context-support</artifactId>     <version>${spring.version}</version>    </dependency>    <dependency>     <groupId>org.springframework</groupId>     <artifactId>spring-aop</artifactId>     <version>${spring.version}</version>    </dependency>    <dependency>     <groupId>org.springframework</groupId>     <artifactId>spring-aspects</artifactId>     <version>${spring.version}</version>    </dependency>    <dependency>     <groupId>org.springframework</groupId>     <artifactId>spring-tx</artifactId>     <version>${spring.version}</version>    </dependency>    <dependency>     <groupId>org.springframework</groupId>     <artifactId>spring-jdbc</artifactId>     <version>${spring.version}</version>    </dependency>    <dependency>     <groupId>org.springframework</groupId>     <artifactId>spring-web</artifactId>     <version>${spring.version}</version>    </dependency>      <!--单元测试依赖 -->    <dependency>     <groupId>junit</groupId>     <artifactId>junit</artifactId>     <version>${junit.version}</version>     <scope>test</scope>    </dependency>      <!-- 日志文件管理包 -->    <!-- log start -->    <dependency>     <groupId>log4j</groupId>     <artifactId>log4j</artifactId>     <version>${log4j.version}</version>    </dependency>    <dependency>     <groupId>org.slf4j</groupId>     <artifactId>slf4j-api</artifactId>     <version>${slf4j.version}</version>    </dependency>    <dependency>     <groupId>org.slf4j</groupId>     <artifactId>slf4j-log4j12</artifactId>     <version>${slf4j.version}</version>    </dependency>    <!-- log end -->      <!--spring单元测试依赖 -->    <dependency>     <groupId>org.springframework</groupId>     <artifactId>spring-test</artifactId>     <version>${spring.version}</version>     <scope>test</scope>    </dependency>      <!--mybatis依赖 -->    <dependency>     <groupId>org.mybatis</groupId>     <artifactId>mybatis</artifactId>     <version>${mybatis.version}</version>    </dependency>      <!-- mybatis/spring包 -->    <dependency>     <groupId>org.mybatis</groupId>     <artifactId>mybatis-spring</artifactId>     <version>1.2.0</version>    </dependency>      <!-- mysql驱动包 -->    <dependency>     <groupId>mysql</groupId>     <artifactId>mysql-connector-java</artifactId>     <version>5.1.29</version>    </dependency>                 <!-- servlet驱动包 -->    <dependency>     <groupId>javax.servlet</groupId>     <artifactId>servlet-api</artifactId>     <version>3.0-alpha-1</version>    </dependency>      <!-- Spring 整合Shiro需要的依赖 -->    <dependency>     <groupId>org.apache.shiro</groupId>     <artifactId>shiro-core</artifactId>     <version>1.2.1</version>    </dependency>    <dependency>     <groupId>org.apache.shiro</groupId>     <artifactId>shiro-web</artifactId>     <version>1.2.1</version>    </dependency>    <dependency>     <groupId>org.apache.shiro</groupId>     <artifactId>shiro-ehcache</artifactId>     <version>1.2.1</version>    </dependency>    <dependency>     <groupId>org.apache.shiro</groupId>     <artifactId>shiro-spring</artifactId>     <version>1.2.1</version>    </dependency>    <!-- Spring 整合Shiro需要的依赖 -->     </dependencies>   <build>    <finalName>ShiroLearn1</finalName>    <plugins>     <!-- 指定web项目 版本 -->     <plugin>      <artifactId>maven-war-plugin</artifactId>      <configuration>       <version>2.4</version>      </configuration>     </plugin>     <!-- 指定编译使用 -->     <plugin>      <groupId>org.apache.maven.plugins</groupId>      <artifactId>maven-compiler-plugin</artifactId>      <version>2.3.2</version>      <configuration>       <source>1.6</source>       <target>1.6</target>      </configuration>     </plugin>    </plugins>   </build>  </project>

2、自定义Shiro拦截器

   这里这个拦截器完成了用户名和密码的验证,验证成功后又给用赋角色和权限(注意,这里赋角色和权限我直接写进去了,没有使用数据库,一般都是要通过service层找到用户名后,再去数据库查该用户对应的角色以及权限,然后再加入到shiro中去)


代码如下:

package com.lin.realm;    import java.util.HashSet;  import java.util.Set;    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.authc.UsernamePasswordToken;  import org.apache.shiro.authz.AuthorizationInfo;  import org.apache.shiro.authz.SimpleAuthorizationInfo;  import org.apache.shiro.cache.Cache;  import org.apache.shiro.realm.AuthorizingRealm;  import org.apache.shiro.subject.PrincipalCollection;  import org.apache.shiro.subject.SimplePrincipalCollection;  import org.slf4j.Logger;  import org.slf4j.LoggerFactory;  import org.springframework.beans.factory.annotation.Autowired;    import com.lin.domain.User;  import com.lin.service.UserService;  import com.lin.utils.CipherUtil;    public class ShiroDbRealm extends AuthorizingRealm {   private static Logger logger = LoggerFactory.getLogger(ShiroDbRealm.class);   private static final String ALGORITHM = "MD5";      @Autowired   private UserService userService;     public ShiroDbRealm() {    super();   }      /**    * 验证登陆    */   @Override   protected AuthenticationInfo doGetAuthenticationInfo(     AuthenticationToken authcToken) throws AuthenticationException {    UsernamePasswordToken token = (UsernamePasswordToken) authcToken;    System.out.println(token.getUsername());    User user = userService.findUserByLoginName(token.getUsername());    System.out.println(user);    CipherUtil cipher = new CipherUtil();//MD5加密    if (user != null) {     return new SimpleAuthenticationInfo(user.getName(), cipher.generatePassword(user.getPassword()), getName());    }else{     throw new AuthenticationException();    }   }     /**    * 登陆成功之后,进行角色和权限验证    */   @Override   protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {    /*这里应该根据userName使用role和permission 的serive层来做判断,并将对应 的权限加进来,下面简化了这一步*/    Set<String> roleNames = new HashSet<String>();       Set<String> permissions = new HashSet<String>();       roleNames.add("admin");//添加角色。对应到index.jsp       roleNames.add("administrator");       permissions.add("create");//添加权限,对应到index.jsp       permissions.add("login.do?main");       permissions.add("login.do?logout");    SimpleAuthorizationInfo info = new SimpleAuthorizationInfo(roleNames);       info.setStringPermissions(permissions);    return info;   }       /**    * 清除所有用户授权信息缓存.    */   public void clearCachedAuthorizationInfo(String principal) {    SimplePrincipalCollection principals = new SimplePrincipalCollection(principal, getName());    clearCachedAuthorizationInfo(principals);   }       /**    * 清除所有用户授权信息缓存.    */   public void clearAllCachedAuthorizationInfo() {    Cache<Object, AuthorizationInfo> cache = getAuthorizationCache();    if (cache != null) {     for (Object key : cache.keys()) {      cache.remove(key);     }    }   }    // @PostConstruct  // public void initCredentialsMatcher() {//MD5鍔犲瘑  //  HashedCredentialsMatcher matcher = new HashedCredentialsMatcher(ALGORITHM);  //  setCredentialsMatcher(matcher);  // }  }

3、shiro的配置文件 :spring-shiro.xml

内容如下:

<?xml version="1.0" encoding="UTF-8"?>  <beans xmlns="http://www.springframework.org/schema/beans"   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   xsi:schemaLocation="http://www.springframework.org/schema/beans         http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"   default-lazy-init="true">     <description>Shiro Configuration</description>     <!-- Shiro's main business-tier object for web-enabled applications -->   <bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">    <property name="realm" ref="shiroDbRealm" />    <property name="cacheManager" ref="cacheManager" />   </bean>     <!-- 項目自定义的Realm -->   <bean id="shiroDbRealm" class="com.lin.realm.ShiroDbRealm">    <property name="cacheManager" ref="cacheManager" />   </bean>     <!-- Shiro Filter -->   <bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean">    <property name="securityManager" ref="securityManager" />    <property name="loginUrl" value="/login.do" />    <property name="successUrl" value="/view/index.html" />    <property name="unauthorizedUrl" value="/error/noperms.jsp" />    <property name="filterChainDefinitions">     <value>      /index.html = authc      /checkLogin.do = anon      /login.do = anon      /logout.html = anon      /** = authc     </value>    </property>   </bean>     <!-- 用户授权信息Cache -->   <bean id="cacheManager" class="org.apache.shiro.cache.MemoryConstrainedCacheManager" />     <!-- 保证实现了Shiro内部lifecycle函数的bean执行 -->   <bean id="lifecycleBeanPostProcessor" class="org.apache.shiro.spring.LifecycleBeanPostProcessor" />     <!-- AOP式方法级权限检查 -->   <bean class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator"    depends-on="lifecycleBeanPostProcessor">    <property name="proxyTargetClass" value="true" />   </bean>     <bean class="org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor">    <property name="securityManager" ref="securityManager" />   </bean>  </beans>

这里简要说明下:

(1)

securityManager:这个属性是必须的。

loginUrl:没有登录的用户请求需要登录的页面时自动跳转到登录页面,不是必须的属性,不输入地址的话会自动寻找项目web项目的根目录下的”/login.jsp”页面。

successUrl:登录成功默认跳转页面,不配置则跳转至”/”。如果登陆前点击的一个需要登录的页面,则在登录自动跳转到那个需要登录的页面。不跳转到此。

unauthorizedUrl:没有权限默认跳转的页面。

(2)

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

4、web.xml配置解读shiro的配置文件(上面的)

<?xml version="1.0" encoding="UTF-8"?>  <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"   xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"   id="WebApp_ID" version="2.5">   <display-name>Archetype Created Web Application</display-name>   <!-- 起始欢迎界面 -->   <welcome-file-list>    <welcome-file>/login.do</welcome-file>   </welcome-file-list>     <!-- 读取spring配置文件 -->   <context-param>    <param-name>contextConfigLocation</param-name>    <param-value>classpath:application.xml,classpath:shiro/spring-shiro.xml</param-value>   </context-param>   <!-- 设计路径变量值 -->   <context-param>    <param-name>webAppRootKey</param-name>    <param-value>springmvc.root</param-value>   </context-param>       <!-- Spring字符集过滤器 -->   <filter>    <filter-name>SpringEncodingFilter</filter-name>    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>    <init-param>     <param-name>encoding</param-name>     <param-value>UTF-8</param-value>    </init-param>    <init-param>     <param-name>forceEncoding</param-name>     <param-value>true</param-value>    </init-param>   </filter>   <filter-mapping>    <filter-name>SpringEncodingFilter</filter-name>    <url-pattern>/*</url-pattern>   </filter-mapping>      <filter>    <filter-name>shiroFilter</filter-name>    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>    <init-param>     <param-name>targetFilterLifecycle</param-name>     <param-value>true</param-value>    </init-param>   </filter>   <filter-mapping>    <filter-name>shiroFilter</filter-name>    <url-pattern>/*</url-pattern>   </filter-mapping>     <!-- 日志记录 -->   <context-param>    <!-- 日志配置文件路径 -->    <param-name>log4jConfigLocation</param-name>    <param-value>classpath:log4j.properties</param-value>   </context-param>   <context-param>    <!-- 日志页面的刷新间隔 -->    <param-name>log4jRefreshInterval</param-name>    <param-value>6000</param-value>   </context-param>   <listener>    <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>   </listener>     <listener>    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>   </listener>      <!-- 防止spring内存溢出监听器 -->   <listener>    <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>   </listener>     <!-- springMVC核心配置 -->   <servlet>    <servlet-name>dispatcherServlet</servlet-name>    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    <init-param>     <param-name>contextConfigLocation</param-name>     <!--spingMVC的配置路径 -->     <param-value>classpath:springmvc/spring-mvc.xml</param-value>    </init-param>    <load-on-startup>1</load-on-startup>   </servlet>   <!-- 拦截设置 -->   <servlet-mapping>    <servlet-name>dispatcherServlet</servlet-name>    <url-pattern>/</url-pattern>   </servlet-mapping>     <!-- 配置session超时时间,单位分钟 -->   <session-config>    <session-timeout>15</session-timeout>   </session-config>   <error-page>    <error-code>404</error-code>    <location>/WEB-INF/views/error/404.jsp</location>   </error-page>   <error-page>    <error-code>401</error-code>    <location>/WEB-INF/views/error/401.jsp</location>   </error-page>  </web-app>

这里不仅配置了SpringMVC还要配置Shiro!

5、登陆页面login.jsp

以下是默认登陆的界面


<%@ page language="java" contentType="text/html; charset=UTF-8"  pageEncoding="UTF-8"%>  <%   String url = request.getRequestURL().toString();   url = url.substring(0, url.indexOf('/', url.indexOf("//") + 2));   String context = request.getContextPath();   url += context;   application.setAttribute("ctx", url);  %>  <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  <html>  <head>  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  <title>Insert title here</title>  </head>  <body>   <form action="${ctx}/checkLogin.do" method="post">    username: <input type="text" name="username"><br>    password: <input type="password" name="password"><br>    <input type="submit" value="登录">   </form>  </body>  </html>

6、验证成功页面index.jsp

如果用户名和密码正确后,跳转到的页面

<%@ page language="java" contentType="text/html; charset=UTF-8"   pageEncoding="UTF-8"%>  <%@ taglib prefix="shiro" uri="http://shiro.apache.org/tags"%>  <%   String url = request.getRequestURL().toString();   url = url.substring(0, url.indexOf('/', url.indexOf("//") + 2));   String context = request.getContextPath();   url += context;   application.setAttribute("ctx", url);  %>  <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  <html>  <head>  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  <title>Shiro登陆实例</title>  </head>  <body>   <h1>Shiro登陆实例</h1><a href="${ctx}/logout.html">退出</a>   <p>一、验证当前用户是否为"访客",即未认证(包含未记住)的用户</p>   <shiro:guest>         Hi there!  Please <a href="login.jsp">Login</a> or <a href="signup.jsp">Signup</a> today!     </shiro:guest>   <p>二、认证通过或已记住的用户</p>   <shiro:user>         Welcome back John!  Not John? Click <a href="login.jsp">here<a> to login.    </shiro:user>   <p>三、已认证通过的用户。不包含已记住的用户,这是与user标签的区别所在。</p>   <shiro:authenticated>         <a href="updateAccount.jsp">Update your contact information</a>.     </shiro:authenticated>   <p>四、未认证通过用户,与authenticated标签相对应。与guest标签的区别是,该标签包含已记住用户。</p>   <shiro:notAuthenticated>         Please <a href="login.jsp">login</a> in order to update your credit card information.     </shiro:notAuthenticated>     <p>五、输出当前用户信息,通常为登录帐号信息</p>   Hello, <shiro:principal/>, how are you today?     <p>六、验证当前用户是否属于该角色</p>   <shiro:hasRole name="administrator">         <a href="admin.jsp">Administer the system</a>     </shiro:hasRole>     <p>七、与hasRole标签逻辑相反,当用户不属于该角色时验证通过</p>   <shiro:lacksRole name="administrator">         Sorry, you are not allowed to administer the system.     </shiro:lacksRole>     <p>八、验证当前用户是否属于以下任意一个角色。</p>   <shiro:hasAnyRoles name="developer,manager,administrator">       You are either a developer,manager, or administrator.     </shiro:hasAnyRoles>     <p>九、验证当前用户权限。</p>   <shiro:hasPermission name="create">       <p>当前用户拥有增加的权限!!!!!!!!!!!!!</p>   </shiro:hasPermission>       <shiro:hasPermission name="delete">        <p>当前用户拥有删除的权限!!!!!!!!!!!!!</p>   </shiro:hasPermission>    </body>  </html>

其它页面就不说了,具体看工程吧!

7、controller层来看看

这里/{id}/showUser主要是来验证是否连接成功(现在无法测试了),当然在工程里你也可以到src/test/java里的包com.lin.service下的UserServiceTest.java,那里我也写了一个单元测试的类。

package com.lin.controller;    import javax.servlet.http.HttpServletRequest;  import javax.servlet.http.HttpServletResponse;    import org.apache.shiro.SecurityUtils;  import org.apache.shiro.authc.UsernamePasswordToken;  import org.apache.shiro.subject.Subject;  import org.slf4j.Logger;  import org.slf4j.LoggerFactory;  import org.springframework.beans.factory.annotation.Autowired;  import org.springframework.stereotype.Controller;  import org.springframework.ui.Model;  import org.springframework.web.bind.annotation.PathVariable;  import org.springframework.web.bind.annotation.RequestMapping;  import org.springframework.web.bind.annotation.RequestMethod;  import org.springframework.web.bind.annotation.ResponseBody;    import com.lin.domain.User;  import com.lin.realm.ShiroDbRealm;  import com.lin.service.UserService;  import com.lin.utils.CipherUtil;    @Controller  public class UserControler {   private static Logger logger = LoggerFactory.getLogger(ShiroDbRealm.class);   @Autowired   private UserService userService;      /**    * 验证springmvc与batis连接成功    * @param id    * @param request    * @return    */   @RequestMapping("/{id}/showUser")   public String showUser(@PathVariable int id, HttpServletRequest request) {    User user = userService.getUserById(id);    System.out.println(user.getName());    request.setAttribute("user", user);    return "showUser";   }      /**    * 初始登陆界面    * @param request    * @return    */   @RequestMapping("/login.do")   public String tologin(HttpServletRequest request, HttpServletResponse response, Model model){    logger.debug("来自IP[" + request.getRemoteHost() + "]的访问");    return "login";   }      /**    * 验证用户名和密码    * @param request    * @return    */   @RequestMapping("/checkLogin.do")   public String login(HttpServletRequest request) {    String result = "login.do";    // 取得用户名    String username = request.getParameter("username");    //取得 密码,并用MD5加密    String password = CipherUtil.generatePassword(request.getParameter("password"));    //String password = request.getParameter("password");    UsernamePasswordToken token = new UsernamePasswordToken(username, password);        Subject currentUser = SecurityUtils.getSubject();    try {     System.out.println("----------------------------");     if (!currentUser.isAuthenticated()){//使用shiro来验证      token.setRememberMe(true);      currentUser.login(token);//验证角色和权限     }     System.out.println("result: " + result);     result = "index";//验证成功    } catch (Exception e) {     logger.error(e.getMessage());     result = "login。do";//验证失败    }    return result;   }          /**       * 退出       * @return       */      @RequestMapping(value = "/logout")        @ResponseBody        public String logout() {                Subject currentUser = SecurityUtils.getSubject();            String result = "logout";            currentUser.logout();            return result;        }           }
再来看看效果吧!
整体工程免费下载: http://download.csdn.net/detail/evankaka/9331135

来自: http://blog.csdn.net/evankaka/article/details/50196003