查询附近的人（可以查看版）

src/main/java/com/bao/dating/controller/UserController.java

@@ -6,7 +6,6 @@ import com.bao.dating.common.ResultCode;
 import com.bao.dating.context.UserContext;
 import com.bao.dating.pojo.dto.UserInfoUpdateDTO;
 import com.bao.dating.pojo.dto.UserLoginDTO;
-import com.bao.dating.pojo.entity.User;
 import com.bao.dating.pojo.vo.UserInfoVO;
 import com.bao.dating.pojo.vo.UserLoginVO;
 import com.bao.dating.service.UserService;
@@ -131,7 +130,7 @@ public class UserController {
     }
 
     @GetMapping("/nearby")
-    public Result<List<User>> nearby( @RequestParam(defaultValue = "5") double  distance){
+    public Result<List<UserInfoVO>> nearby(@RequestParam(defaultValue = "5") double  distance){
         // 获取当前线程的用户 ID
         Long userId = UserContext.getUserId();
         if (userId == null) {
@@ -158,10 +157,10 @@ public class UserController {
         longitude = (longitude != null) ? longitude : 0.0;
 
         // 查询附近用户
-        List<User> nearbyUsers = userService.findNearbyUsers(latitude, longitude, distance);
+        List<UserInfoVO> nearbyUsers = userService.findNearbyUsers(latitude, longitude, distance);
 
         // 返回成功结果
-        return Result.success(ResultCode.SUCCESS, "获取附近用户成功", nearbyUsers);
+        return Result.success(ResultCode.SUCCESS, "查询成功", nearbyUsers);
     }
 
 }

src/main/java/com/bao/dating/mapper/CommentsMapper.java

@@ -5,7 +5,7 @@ import com.bao.dating.pojo.entity.Comments;
 import org.apache.ibatis.annotations.*;
 
 import java.util.List;
-
+@Mapper
 public interface CommentsMapper {
     // 添加评论
     @Insert("INSERT INTO dating.comments(content, user_id, post_id, created_at) VALUES(#{content}, #{user_id}, #{post_id}, #{created_at})")

src/main/java/com/bao/dating/mapper/UserMapper.java

@@ -2,6 +2,7 @@ package com.bao.dating.mapper;
 
 import com.bao.dating.pojo.dto.UserInfoUpdateDTO;
 import com.bao.dating.pojo.entity.User;
+import com.bao.dating.pojo.vo.UserInfoVO;
 import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Param;
 
@@ -46,5 +47,5 @@ public interface UserMapper {
      * @param maxLng 最大经度
      * @return 用户列表
      */
-    List<User> findByLatLngRange( @Param("minLat") double minLat, @Param("maxLat") double maxLat, @Param("minLng") double minLng, @Param("maxLng") double maxLng);
+    List<UserInfoVO> findByLatLngRange(@Param("minLat") double minLat, @Param("maxLat") double maxLat, @Param("minLng") double minLng, @Param("maxLng") double maxLng);
 }

src/main/java/com/bao/dating/pojo/entity/User.java

@@ -44,7 +44,7 @@ public class User implements Serializable {
 
     private String userPhone;
 
-    private Double latitude;   // 纬度
+    private Double latitude;
 
-    private Double longitude;  // 经度
+    private Double longitude;
 }

src/main/java/com/bao/dating/service/UserService.java

@@ -69,5 +69,5 @@ public interface UserService {
      * @param radiusKm 半径 km
      * @return 用户列表
      */
-    List<User> findNearbyUsers(double lat,double lng,double  radiusKm);
+    List<UserInfoVO> findNearbyUsers(double lat,double lng,double  radiusKm);
 }

src/main/java/com/bao/dating/service/impl/UserServiceImpl.java

@@ -376,7 +376,7 @@ public class UserServiceImpl implements UserService {
     }
 
     @Override
-    public List<User> findNearbyUsers(double lat, double lng, double radiusKm) {
+    public List<UserInfoVO> findNearbyUsers(double lat, double lng, double radiusKm) {
        //先用经纬度范围筛选（矩形框，提高性能）
         double delta = radiusKm / 111.0; // 1° ≈ 111km
         double minLat = lat - delta;// 最小纬度
@@ -388,11 +388,11 @@ public class UserServiceImpl implements UserService {
         System.out.println("Min Latitude: " + minLat + ", Max Latitude: " + maxLat);
         System.out.println("Min Longitude: " + minLng + ", Max Longitude: " + maxLng);
 
-        List<User> byLatLngRange = userMapper.findByLatLngRange(minLat, maxLat, minLng, maxLng);
+        List<UserInfoVO> byLatLngRange = userMapper.findByLatLngRange(minLat, maxLat, minLng, maxLng);
 
         //精确计算距离，筛选在半径内的用户
-        List<User> result = new ArrayList<>();
+        List<UserInfoVO> result = new ArrayList<>();
-        for (User u:byLatLngRange){
+        for (UserInfoVO u:byLatLngRange){
             // 检查用户是否有经纬度信息
             if (u.getLatitude() != null && u.getLongitude() != null) {
                 double distance  = DistanceUtil.calculate(lat, lng, u.getLatitude(), u.getLongitude());

src/main/resources/com/bao/dating/mapper/UserMapper.xml

@@ -5,6 +5,22 @@
 <mapper namespace="com.bao.dating.mapper.UserMapper">
 
     <!--根据用户名查询用户-->
+    <resultMap id="UserInfoVOResultMap" type="com.bao.dating.pojo.vo.UserInfoVO">
+        <id property="userId" column="user_id"/>
+        <result property="userName" column="user_name"/>
+        <result property="nickname" column="nickname"/>
+        <result property="avatarUrl" column="avatar_url"/>
+        <result property="backgroundUrl" column="background_url"/>
+        <result property="gender" column="gender"/>
+        <result property="birthday" column="birthday"/>
+        <result property="hobbies" column="hobbies" typeHandler="com.bao.dating.handler.ListToJsonTypeHandler"/>
+        <result property="signature" column="signature"/>
+        <result property="createdAt" column="created_at"/>
+        <result property="updatedAt" column="updated_at"/>
+        <result property="latitude" column="user_latitude"/>
+        <result property="longitude" column="user_longitude"/>
+    </resultMap>
+    
     <select id="getByUsername" resultType="com.bao.dating.pojo.entity.User">
         SELECT
             user_id,
@@ -82,7 +98,21 @@
     <select id="selectByPhone" resultType="com.bao.dating.pojo.entity.User">
         select * from dating.user where user_phone =#{phone}
     </select>
-    <select id="findByLatLngRange" resultType="com.bao.dating.pojo.entity.User">
+    <select id="findByLatLngRange" resultMap="UserInfoVOResultMap">
-        SELECT * FROM user WHERE user_latitude BETWEEN #{minLat} AND #{maxLat} AND user_longitude BETWEEN #{minLng} AND #{maxLng}
+        SELECT
+            user_id,
+            user_name,
+            nickname,
+            avatar_url,
+            background_url,
+            gender,
+            birthday,
+            hobbies,
+            signature,
+            created_at,
+            updated_at,
+            user_latitude,
+            user_longitude
+        FROM user WHERE user_latitude BETWEEN #{minLat} AND #{maxLat} AND user_longitude BETWEEN #{minLng} AND #{maxLng}
     </select>
 </mapper>