登录校验

pom.xml

@@ -64,6 +64,12 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-data-redis</artifactId>
         </dependency>
+        <!--JWT相关依赖-->
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt</artifactId>
+            <version>0.9.1</version>
+        </dependency>
 
         <dependency>
             <groupId>org.springframework.boot</groupId>

src/main/java/org/hlrj/duobao_demo/DuobaoDemoApplication.java

@@ -4,10 +4,12 @@ import org.mybatis.spring.annotation.MapperScan;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.web.servlet.ServletComponentScan;
 import org.springframework.cache.annotation.EnableCaching;
 
 @SpringBootApplication
 @EnableCaching
+@ServletComponentScan
 @MapperScan("org.hlrj.duobao_demo.mapper")
 public class DuobaoDemoApplication {
 

src/main/java/org/hlrj/duobao_demo/controller/LoginController.java

@@ -3,12 +3,17 @@ package org.hlrj.duobao_demo.controller;
 import lombok.extern.slf4j.Slf4j;
 import org.hlrj.duobao_demo.entity.User;
 import org.hlrj.duobao_demo.service.IUserService;
+import org.hlrj.duobao_demo.tool.JwtUtils;
 import org.hlrj.duobao_demo.tool.Result;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
+import java.util.HashMap;
+import java.util.Map;
+
 /**
  * @program: duobao_demo
  * @ClassName LoginController
@@ -29,9 +34,14 @@ public class LoginController {
         log.info("登录操作：{}",user);
         User user1 = userService.login(user);
         if (user1 != null) {
-            return Result.error("用户名或者密码错误");
-        }else {
-            return Result.success("登录成功");
+            Map<String, Object> map = new HashMap<>();
+            map.put("userid",user1.getUserid());
+            map.put("username",user1.getUsername());
+            map.put("createTime",user1.getCreateTime());
+            //生成jwt令牌
+            String jwt = JwtUtils.generateJwt(map);
+            return Result.success(jwt);
         }
+        return Result.error("用户名或者密码错误");
     }
 }

src/main/java/org/hlrj/duobao_demo/entity/User.java

@@ -39,7 +39,7 @@ public class User implements Serializable {
     private String password;
 
     @ApiModelProperty(value = "创建时间")
-    private LocalDateTime createTime;
+    private java.util.Date createTime;
 
 
 }

src/main/java/org/hlrj/duobao_demo/tool/DomoFilter.java

@@ -0,0 +1,34 @@
+package org.hlrj.duobao_demo.tool;
+
+
+import javax.servlet.*;
+import javax.servlet.annotation.WebFilter;
+import java.io.IOException;
+
+/**
+ * @program: duobao_demo
+ * @ClassName DomoFilter
+ * @description:
+ * @author:liuyusong
+ * @create: 2025−04-14 15:43
+ * @Version 1.0
+ **/
+@WebFilter(urlPatterns="/*")
+public class DomoFilter implements Filter {
+
+    @Override//初始化方法，只调用一次
+    public void init(FilterConfig filterConfig) throws ServletException {
+        System.out.println("init,初始化方法执行了");
+    }
+
+    @Override//拦截到请求之后调用，调用多次
+    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
+        filterChain.doFilter(servletRequest, servletResponse);
+        
+    }
+
+    @Override//销毁方法，只能调用一次
+    public void destroy() {
+        System.out.println("destroy 销毁方法执行了");
+    }
+}

src/main/java/org/hlrj/duobao_demo/tool/JwtUtils.java

@@ -0,0 +1,46 @@
+package org.hlrj.duobao_demo.tool;
+
+import io.jsonwebtoken.Claims;
+import io.jsonwebtoken.Jwts;
+import io.jsonwebtoken.SignatureAlgorithm;
+
+import java.time.LocalDateTime;
+import java.util.Date;
+import java.util.Map;
+
+/**
+ * @program: duobao_demo
+ * @ClassName JwtUtils
+ * @description:
+ * @author:liuyusong
+ * @create: 2025−04-14 14:38
+ * @Version 1.0
+ **/
+
+public class JwtUtils {
+
+    private static String singKey="hongli";//签名密钥
+    private static Long expire = 30*60*1000L;//设置过期时间为半小时
+
+    /**
+     * 生成JWT令牌
+     * @param claims
+     * @return
+     */
+    public static String generateJwt(Map<String, Object> claims){
+        String jwt = Jwts.builder()
+                .addClaims(claims)
+                .signWith(SignatureAlgorithm.HS256,singKey)
+                .setExpiration(new Date(System.currentTimeMillis()+expire))
+                .compact();
+        return jwt;
+    }
+
+    public static Claims parseJwt(String jwt){
+        Claims claims = Jwts.parser()
+                .setSigningKey(singKey)
+                .parseClaimsJws(jwt)
+                .getBody();
+        return claims;
+    }
+}

src/main/java/org/hlrj/duobao_demo/tool/Result.java

@@ -29,7 +29,7 @@ public class Result {
         return new Result(200, "success", data);
     }
     public static Result success(String msg) {
-        return new Result(400,"msg",null);
+        return new Result(200,"msg",msg);
     }
     public static Result error(String msg) {return new Result(400,"msg",msg);}
 }

src/main/resources/mapper/UserMapper.xml

@@ -16,7 +16,7 @@
             password,
             createTime
         FROM
-            users
+            user
         WHERE
             username = #{username}
           AND

src/test/java/com/example/demo/Demo2ApplicationTests.java

@@ -1,13 +0,0 @@
-package com.example.demo;
-
-import org.junit.jupiter.api.Test;
-import org.springframework.boot.test.context.SpringBootTest;
-
-@SpringBootTest
-class Demo2ApplicationTests {
-
-    @Test
-    void contextLoads() {
-    }
-
-}

src/test/java/org/hlrj/duobao_demo/DuobaoDemoApplicationTests.java

@@ -1,13 +1,33 @@
 package org.hlrj.duobao_demo;
 
+import io.jsonwebtoken.Jwts;
+import io.jsonwebtoken.SignatureAlgorithm;
 import org.junit.jupiter.api.Test;
 import org.springframework.boot.test.context.SpringBootTest;
 
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+
 @SpringBootTest
 class DuobaoDemoApplicationTests {
 
     @Test
     void contextLoads() {
     }
+   /* @Test
+    public void testGenJwt(){
+        Map<String,Object> map=new HashMap<>();
+        map.put("id",1);
+        map.put("name","liuyusong");
+
+        String jwt = Jwts.builder()
+                .signWith(SignatureAlgorithm.HS256,"hongli")//签名算法
+                .setClaims(map)//自定义内容（有效载荷）
+                .setExpiration(new Date(System.currentTimeMillis()+3600*1000))//设置有效期为一个小时
+                .compact();
+        System.out.println(jwt);
+    }*/
+
 
 }