Spring Security实现后台管理员登录（一）

一、实现功能

 

二、数据表设计

为了测试方便，这里创建一个简单的数据表，只含有name和password两个字段。至于角色，权限等，这里都先不考虑。

插入一条数据，name为admin，password为e10adc3949ba59abbe56e057f20f883e（这是123456经md5加密后得到的值）。

三、配置文件

1 在pom.xml中添加三个相关的包

<dependency><groupId>org.springframework.security</groupId><artifactId>spring-security-core</artifactId><version>${org.springframework.security.version}</version></dependency><dependency><groupId>org.springframework.security</groupId><artifactId>spring-security-config</artifactId><version>${org.springframework.security.version}</version></dependency><dependency><groupId>org.springframework.security</groupId><artifactId>spring-security-web</artifactId><version>${org.springframework.security.version}</version></dependency>

2 web.xml中添加过滤器

<!-- 添加Spring-Security过滤器 --><filter><filter-name>springSecurityFilterChain</filter-name><filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class></filter><filter-mapping><filter-name>springSecurityFilterChain</filter-name><url-pattern>/service/*</url-pattern></filter-mapping>

  

3 src/main/resource/spring/applicationContext-security.xml的内容为

<?xml version="1.0" encoding="UTF-8"?><beans:beans xmlns:beans="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://www.springframework.org/schema/security"xsi:schemaLocation="http://www.springframework.org/schema/beans               http://www.springframework.org/schema/beans/spring-beans-3.2.xsd              http://www.springframework.org/schema/security               http://www.springframework.org/schema/security/spring-security-3.1.xsd"><!-- 需要登陆能够访问的路径 -->   <http access-denied-page="/service/login/unSecurity" entry-point-ref="authenticationProcessingFilterEntryPoint"><!-- 首页 --><intercept-url pattern="/service/index/index" access="ROLE_AUTHORITY"/><!-- 自定义loginFilter --><custom-filter ref="loginFilter" position="FORM_LOGIN_FILTER" /><logout logout-url="/service/login/logout" logout-success-url="/" invalidate-session="true"delete-cookies="JSESSIONID,SPRING_SECURITY_REMEMBER_ME_COOKIE"/><session-management invalid-session-url="/service/login/unSecurity" session-authentication-strategy-ref="sas"/></http><!-- 登录验证器 --><beans:bean id="loginFilter" class="com.zheng.shared.security.JadeUserPwdAuthFilter"><!-- 处理登录的action --><beans:property name="filterProcessesUrl" value="/service/login/userLogin"/><!-- 认证管理 点击完登录后，最终实现校验的是AuthenticationProvider--><beans:property name="authenticationManager" ref="myAuthenticationManager"/><!-- 验证成功后的处理--><beans:property name="authenticationSuccessHandler" ref="loginLogAuthenticationSuccessHandler"/><!-- 验证失败后的处理--><beans:property name="authenticationFailureHandler" ref="simpleUrlAuthenticationFailureHandler"/><!-- 实现多个帐号登录时最后一次登录的有效,目前只请允许登录一个帐号 --><beans:property name="sessionAuthenticationStrategy" ref="sas"/></beans:bean><beans:bean id="loginLogAuthenticationSuccessHandler" class="org.springframework.security.web.authentication.SavedRequestAwareAuthenticationSuccessHandler"><beans:property name="alwaysUseDefaultTargetUrl" value="true"/><beans:property name="defaultTargetUrl" value="/service/login/loginSucc"/></beans:bean><beans:bean id="simpleUrlAuthenticationFailureHandler" class="org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler"><!-- 可以配置相应的跳转方式。属性forwardToDestination为true采用forward false为sendRedirect --><beans:property name="defaultFailureUrl" value="/service/login/loginFail"/></beans:bean><beans:bean id="sas" class="org.springframework.security.web.authentication.session.ConcurrentSessionControlStrategy">      <beans:property name="maximumSessions" value="1"/>    <beans:property name="exceptionIfMaximumExceeded" value="false"/>      <beans:constructor-arg name="sessionRegistry" ref="sessionRegistry"/>  </beans:bean><beans:bean id="sessionRegistry" class="org.springframework.security.core.session.SessionRegistryImpl"/><authentication-manager alias="myAuthenticationManager"><authentication-provider ref="authenticationProvider"/></authentication-manager><beans:bean id="authenticationProvider" class="org.springframework.security.authentication.dao.DaoAuthenticationProvider"><!-- 配置异常能被捕捉 -->    <beans:property name="hideUserNotFoundExceptions" value="false" />        <beans:property name="userDetailsService" ref="userDetailService" />     <!-- <beans:property name="messageSource" ref="messageSource" /> -->    <!-- <beans:property name="userCache" ref="userCache" />可使用缓存保存用户信息-->    <!-- 开发过程中可以先把这两行注释掉-->    <!-- <beans:property name="passwordEncoder" ref="passwordEncode"/>    <beans:property name="saltSource" ref="saltSource" />  --></beans:bean><!-- 密码加密 --><beans:bean id="passwordEncode" class="org.springframework.security.authentication.encoding.Md5PasswordEncoder" />  <beans:bean id="saltSource" class="org.springframework.security.authentication.dao.ReflectionSaltSource">  <beans:property name="userPropertyToUse" value="id"/>  </beans:bean><beans:bean id="userDetailService" class="com.zheng.service.impl.UserServiceImpl" /><!-- 未登录的切入点--><beans:bean id="authenticationProcessingFilterEntryPoint" class="org.springframework.security.web.authentication.LoginUrlAuthenticationEntryPoint"><beans:property name="loginFormUrl" value="/service/login/unSecurity" /></beans:bean> </beans:beans>

四、相关代码

1src/main/java/com/zheng/shared/sercurity/JadeUserPwdAuthFilter.java中的代码为

package com.zheng.shared.security;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.security.authentication.AuthenticationServiceException;import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;import org.springframework.security.core.Authentication;import org.springframework.security.core.AuthenticationException;import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;import com.zheng.bean.User;import com.zheng.dao.UserMapper;public class JadeUserPwdAuthFilter extends UsernamePasswordAuthenticationFilter {public static final String USERNAME = "userName";public static final String PASSWORD = "userPassword";@Autowiredprivate UserMapper userDao;@Overridepublic Authentication attemptAuthentication(HttpServletRequest request,HttpServletResponse response) throws AuthenticationException {if (!request.getMethod().equals("POST")) {throw new AuthenticationServiceException("Authentication method not supported: " + request.getMethod());}String userName = request.getParameter(USERNAME);String password = request.getParameter(PASSWORD);User user = userDao.findUserByUserName(userName);System.out.println("username: " + user.getUsername());System.out.println("password: " + user.getPassword());// 验证用户是否被启用UsernamePasswordAuthenticationToken authRequest = new UsernamePasswordAuthenticationToken(userName, password);// 允许子类设置详细属性  setDetails(request, authRequest);// 运行UserDetailsService的loadUserByUsername 再次封装Authentication return this.getAuthenticationManager().authenticate(authRequest);}}

2 src/main/java/com/zheng/service/UserService.java的内容为

package com.zheng.service;import org.springframework.security.core.userdetails.UserDetailsService;public interface UserService extends UserDetailsService{}

3 src/main/java/com/zheng/service/impl/UserServiceImpl.java的内容为

package com.zheng.service.impl;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.security.core.userdetails.UserDetails;import org.springframework.security.core.userdetails.UsernameNotFoundException;import com.zheng.bean.User;import com.zheng.dao.UserMapper;import com.zheng.service.UserService;public class UserServiceImpl implements UserService{@Autowiredprivate UserMapper userMapper;@Overridepublic UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {User user = null;try {user = userMapper.findUserByUserName(username);} catch (Exception e) {e.printStackTrace();}if (user == null) {throw new UsernameNotFoundException("用户名或密码不正确!");}System.out.println("username: " + user.getUsername());System.out.println("password: " + user.getPassword());return user;}}

4 src/main/java/com/zheng/bean/User.java的内容为

package com.zheng.bean;import java.io.Serializable;import java.util.Collection;import org.springframework.security.core.GrantedAuthority;import org.springframework.security.core.userdetails.UserDetails;public class User implements UserDetails , Serializable {private static final long serialVersionUID = 123L;    private String userName;    private String password;    private Collection<GrantedAuthority> authorities;// 用户证书是否有效        @Overridepublic String getUsername() {return this.userName;}@Override    public String getPassword() {        return password;    }public void setPassword(String password) {this.password = password;}    @Overridepublic Collection<? extends GrantedAuthority> getAuthorities() {return authorities;}public void setAuthorities(Collection<GrantedAuthority> authorities) {this.authorities = authorities;}@Overridepublic boolean isAccountNonExpired() {return true;}@Overridepublic boolean isAccountNonLocked() {return true;}@Overridepublic boolean isCredentialsNonExpired() {return true;}@Overridepublic boolean isEnabled() {return true;}}

特别需要注意的是：用户只有在不过期、没被锁定、没被禁用的情况下才能登录成功，所以isEnabled()方法的返回值设为真，表示用户没有禁用。

 

5 src/main/java/com/zheng/dao/UserMapper.java的内容为

package com.zheng.dao;import com.zheng.bean.User;public interface UserMapper {    /**     * 根据用户名查找     * @param userName     * @return     */User findUserByUserName(String name);}

6 src/main/resources/config/mybatis/mapper/UserMapper.xml

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" ><mapper namespace="com.zheng.dao.UserMapper" >  <resultMap id="BaseResultMap" type="com.zheng.bean.User" >     <result column="name" property="userName" jdbcType="VARCHAR" />     <result column="password" property="password" jdbcType="VARCHAR" />  </resultMap>    <select id="findUserByUserName" parameterType="string" resultMap="BaseResultMap" >    select * from user where name = #{userName}  </select></mapper>

7 LoginController.java中响应登录成功和失败的方法为

/** * 登陆成功进行处理的方法 * @param request * @return */@RequestMapping("/loginSucc")@ResponseBodypublic Map<String,Object> loginSucc(HttpServletRequest request){System.out.println("登录成功!");Map<String,Object> result = new HashMap<String,Object>();return result;}/** * 登陆失败进行的操作 * @param request * @return */@RequestMapping("/loginFail")@ResponseBodypublic Map<String,Object> loginFail(HttpServletRequest request){System.out.println("登录失败!");Map<String,Object> result = new HashMap<String,Object>();return result;}

五、运行结果