Shiro学习总结（4）——Shrio登陆验证实例详细解读

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！