登录

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

@@ -0,0 +1,37 @@
+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.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.RestController;
+
+/**
+ * @program: duobao_demo
+ * @ClassName LoginController
+ * @description:
+ * @author:liuyusong
+ * @create: 2025−04-14 11:18
+ * @Version 1.0
+ **/
+@RestController
+@Slf4j
+public class LoginController {
+
+
+    @Autowired
+    private IUserService userService;
+    @PostMapping("/login")
+    public Result login(@RequestBody User user) {
+        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");
+        }
+    }
+}

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

@@ -0,0 +1,45 @@
+package org.hlrj.duobao_demo.entity;
+
+import com.baomidou.mybatisplus.annotation.TableName;
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
+import java.time.LocalDateTime;
+import java.io.Serializable;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.experimental.Accessors;
+
+/**
+ * <p>
+ * 
+ * </p>
+ *
+ * @author liuyusong
+ * @since 2025-04-14
+ */
+@Data
+@EqualsAndHashCode(callSuper = false)
+@Accessors(chain = true)
+@TableName("user")
+@ApiModel(value="User对象", description="")
+public class User implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+
+    @ApiModelProperty(value = "ID")
+    @TableId(value = "userid", type = IdType.AUTO)
+    private Integer userid;
+
+    @ApiModelProperty(value = "用户名")
+    private String username;
+
+    @ApiModelProperty(value = "密码")
+    private String password;
+
+    @ApiModelProperty(value = "创建时间")
+    private LocalDateTime createTime;
+
+
+}

src/main/java/org/hlrj/duobao_demo/mapper/UserMapper.java

@@ -0,0 +1,17 @@
+package org.hlrj.duobao_demo.mapper;
+
+import org.hlrj.duobao_demo.entity.User;
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+
+/**
+ * <p>
+ *  Mapper 接口
+ * </p>
+ *
+ * @author liuyusong
+ * @since 2025-04-14
+ */
+public interface UserMapper extends BaseMapper<User> {
+
+    public User getUserByUsernameAndPassword(User user);
+}

src/main/java/org/hlrj/duobao_demo/service/IUserService.java

@@ -0,0 +1,21 @@
+package org.hlrj.duobao_demo.service;
+
+import org.hlrj.duobao_demo.entity.User;
+import com.baomidou.mybatisplus.extension.service.IService;
+
+/**
+ * <p>
+ *  服务类
+ * </p>
+ *
+ * @author liuyusong
+ * @since 2025-04-14
+ */
+public interface IUserService extends IService<User> {
+    /**
+     * 用户登录
+     * @param user
+     * @return
+     */
+    public User login(User user);
+}

src/main/java/org/hlrj/duobao_demo/service/impl/UserServiceImpl.java

@@ -0,0 +1,28 @@
+package org.hlrj.duobao_demo.service.impl;
+
+import org.hlrj.duobao_demo.entity.User;
+import org.hlrj.duobao_demo.mapper.UserMapper;
+import org.hlrj.duobao_demo.service.IUserService;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+/**
+ * <p>
+ *  服务实现类
+ * </p>
+ *
+ * @author liuyusong
+ * @since 2025-04-14
+ */
+@Service
+public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements IUserService {
+
+    @Autowired
+    private UserMapper userMapper;
+
+    @Override
+    public User login(User user) {
+       return userMapper.getUserByUsernameAndPassword(user);
+    }
+}

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

@@ -31,4 +31,5 @@ public class Result {
     public static Result success(String msg) {
         return new Result(400,"msg",null);
     }
+    public static Result error(String msg) {return new Result(400,"msg",msg);}
 }

src/main/resources/mapper/UserMapper.xml

@@ -0,0 +1,25 @@
+<?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="org.hlrj.duobao_demo.mapper.UserMapper">
+
+    <!-- 通用查询映射结果 -->
+    <resultMap id="BaseResultMap" type="org.hlrj.duobao_demo.entity.User">
+        <id column="userid" property="userid" />
+        <result column="username" property="username" />
+        <result column="password" property="password" />
+        <result column="createTime" property="createTime" />
+    </resultMap>
+    <select id="getUserByUsernameAndPassword" resultMap="BaseResultMap" parameterType="org.hlrj.duobao_demo.entity.User">
+        SELECT
+            userid,
+            username,
+            password,
+            createTime
+        FROM
+            users
+        WHERE
+            username = #{username}
+          AND
+            password = #{password}
+    </select>
+</mapper>