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";

    @Autowired
    private UserMapper userDao;

    @Override
    public 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{

    @Autowired
    private UserMapper userMapper;

    @Override
    public 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

    @Override
    public String getUsername() {
        return this.userName;
    }

    @Override
    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        return authorities;
    }

    public void setAuthorities(Collection<GrantedAuthority> authorities) {
        this.authorities = authorities;
    }

    @Override
    public boolean isAccountNonExpired() {
        return true;
    }

    @Override
    public boolean isAccountNonLocked() {
        return true;
    }

    @Override
    public boolean isCredentialsNonExpired() {
        return true;
    }

    @Override
    public 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")
@ResponseBody
public 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")
@ResponseBody
public 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

 

顶