SpringBoot单点登录实现过程详细分析
1.具体实现步骤
添加拦截器,设置UUID作为唯一标识,存入数据库中
通过当前登陆者的账户进行查询
如果当前登陆者session中存入的UUID与我们数据库中的UUID值相同则通过
否则返回false,表示已在其他设备或浏览器登录登录
2.代码展示
首先我们新建一个Spring项目
添加以下几个依赖
yml配置文件
server:
port: 8080
spring:
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://127.0.0.1:3306/userdb?characterEncoding=utf-8&&severTimezone=utc
username: root
password: root
thymeleaf:
mode: HTML5
cache: false
suffix: .html
prefix: classpath:/templates/
mybatis:
mapper-locations: classpath:/mapper/*.xml #引入mapper文件
type-aliases-package: com.bdqn.springsso.pojo #引入类型别名
pom.xml配置文件
<?xml version="1.0" encoding="UTF-8"?> <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 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.7.5</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.bdqn</groupId> <artifactId>springsso</artifactId> <version>0.0.1-SNAPSHOT</version> <name>springsso</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>2.2.2</version> </dependency> <dependency> <groupId>com.mysql</groupId> <artifactId>mysql-connector-j</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <configuration> <excludes> <exclude> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> </exclude> </excludes> </configuration> </plugin> </plugins> </build> </project>
后台代码
在java目录下建立以下几个包,并在resources中建立mapper包
首先进行 pojo层 实体类User 的编写
注意:在MySQL中创建表时 uuid 的数据类型为 varchar 长度一定要给大一点不然就会运行报错
package com.bdqn.springsso.pojo; import lombok.Data; @Data public class User { //用户id private Integer id; //账户 private String username; //密码 private String password; //uuid private String uuid; }
再进行 mapper层 UserMapper接口 的编写
package com.bdqn.springsso.mapper; import com.bdqn.springsso.pojo.User; import org.apache.ibatis.annotations.Mapper; import org.apache.ibatis.annotations.Param; @Mapper public interface UserMapper { //根据姓名和密码查询 User chekLogin(@Param("username") String username, @Param("password") String password); //根据姓名修改uuid void update(@Param("uuid") String uuid,@Param("username") String username); //根据姓名查询uuid String getUUID(@Param("username") String username); }
再进行 service层 UserService 和 UserServiceImpl 的编写
package com.bdqn.springsso.service; import com.bdqn.springsso.pojo.User; public interface UserService { //根据姓名和密码查询 User chekLogin(String username, String password); //根据姓名修改uuid void update(String uuid,String username); }
package com.bdqn.springsso.service; import com.bdqn.springsso.mapper.UserMapper; import com.bdqn.springsso.pojo.User; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; @Service public class UserServiceImpl implements UserService { @Autowired private UserMapper userMapper; @Override public User chekLogin(String username, String password) { return userMapper.chekLogin(username,password); } @Override public void update(String uuid,String username) { userMapper.update(uuid,username); } }
再是 interceptor层 UserInterceptor拦截器 的编写
package com.bdqn.springsso.interceptor; import com.bdqn.springsso.mapper.UserMapper; import org.springframework.web.servlet.HandlerInterceptor; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; public class UserInterceptor implements HandlerInterceptor { private UserMapper userMapper; public UserInterceptor(UserMapper userMapper){ this.userMapper=userMapper; } @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { HttpSession session = request.getSession(); String username = (String) session.getAttribute("username"); //数据库 String UUID=userMapper.getUUID(username); //session String uuid = (String)session.getAttribute("uuid"); System.out.println("uuid = " + uuid); System.out.println("UUID = " + UUID); if(UUID.equals(uuid)){ return true; }else { System.out.println("拦截"+request.getRequestURI()); response.sendRedirect("/login"); response.setStatus(401); return false; } } }
再是 controller层 UserController
package com.bdqn.springsso.controller; import com.bdqn.springsso.pojo.User; import com.bdqn.springsso.service.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.CrossOrigin; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import javax.servlet.http.HttpSession; import java.util.UUID; @Controller @CrossOrigin public class UserController { @Autowired private UserService userService; //登录 @RequestMapping("/") public String goLogin(){ return "login"; } //登录验证 @RequestMapping("/login") public String chekLogin(String username, String password, HttpSession session){ User user=userService.chekLogin(username,password); if (user==null){ return "login"; }else { session.setAttribute("username",username); String uuid= UUID.randomUUID().toString().replace("-", ""); System.out.println("uuid = " + uuid); userService.update(uuid,username); session.setAttribute("uuid",uuid); return "index"; } } //测试 @RequestMapping("/test") @ResponseBody public String test(){ return "成功"; } }
再是 config层 MvcConfig 的编写
package com.bdqn.springsso.config; import com.bdqn.springsso.interceptor.UserInterceptor; import com.bdqn.springsso.mapper.UserMapper; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Configuration; import org.springframework.web.servlet.config.annotation.InterceptorRegistry; import org.springframework.web.servlet.config.annotation.WebMvcConfigurer; @Configuration public class MvcConfig implements WebMvcConfigurer { @Autowired private UserMapper userMapper; @Override public void addInterceptors(InterceptorRegistry registry) { //添加拦截器,排除/路径和 /login路径 registry.addInterceptor(new UserInterceptor(userMapper)) .excludePathPatterns("/","/login"); } }
最后是 userMapper.xml 的编写
<?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.bdqn.springsso.mapper.UserMapper"> <update id="update"> update user set uuid=#{uuid} where username=#{username} </update> <select id="chekLogin" resultType="com.bdqn.springsso.pojo.User"> select * from user where username=#{username} and password=#{password} </select> <select id="getUUID" resultType="java.lang.String"> select uuid from user where username=#{username} </select> </mapper>
前台代码
login.html
<!DOCTYPE html> <html lang="en" xmlns:th="http://www.thymeleaf.org"> <head> <meta charset="UTF-8"> <title>Login Module</title> </head> <body> <h1 style="text-align: center">欢迎来到登录页面</h1> <form style="text-align: center" th:action="@{/login}" method="post"> 用户:<input type="text" name="username"><br> 密码:<input type="password" name="password"><br> <button type="submit">登录</button> </form> </body> </html>
index.html
<!DOCTYPE html> <html lang="en" xmlns:th="http://www.thymeleaf.org"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <h1>登录成功</h1> <a th:href="@{/test}" rel="external nofollow" >测试</a> </body> </html>
效果展示
首先我们用火狐浏览器进行操作
输入http://localhost:8080/进入登陆页面
点击登录
点击测试
然后我们返回登陆成功页面
再用谷歌浏览器进入http://localhost:8080/进行登录操作
登录后进入登录成功页面
此时我们返回火狐浏览器
点击测试超链接 发现页面跳转至登录页面
表明单点登录测试成功
到此这篇关于SpringBoot单点登录实现过程详细分析的文章就介绍到这了,更多相关SpringBoot单点登录内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!
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