shiro配置及配置项说明

    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！