feat: 체중 기록 저장(POST)기능 추가

.gitignore

@@ -35,3 +35,7 @@ out/
 
 ### VS Code ###
 .vscode/
+
+### PostMan ###
+.postman/
+postman/

.postman/config.json

@@ -0,0 +1,13 @@
+{
+  "workspace": {
+    "id": "9773296a-87d0-4545-b261-b2bb4026cca9"
+  },
+  "entities": {
+    "environments": [],
+    "flows": [],
+    "globals": [],
+    "mocks": [],
+    "specs": [],
+    "collections": []
+  }
+}

postman/globals/workspace.postman_globals.json

@@ -0,0 +1,7 @@
+{
+  "id": "a141368c-2e88-4434-9b5b-5ee59046fed2",
+  "name": "Globals",
+  "values": [],
+  "_postman_variable_scope": "globals",
+  "_postman_exported_at": "2026-06-28T05:43:38.225Z"
+}

src/main/java/com/github/minuk1749/workout_tracker/controller/WeightRecordController.java

@@ -1,23 +1,42 @@
 package com.github.minuk1749.workout_tracker.controller;
 
-import com.github.minuk1749.workout_tracker.domain.WeightRecord;
+import com.github.minuk1749.workout_tracker.dto.WeightRecordRequest;
+import com.github.minuk1749.workout_tracker.dto.WeightRecordResponse;
 import com.github.minuk1749.workout_tracker.service.WeightRecordService;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.PathVariable;
 import lombok.RequiredArgsConstructor;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.bind.annotation.PatchMapping;
 
 import java.util.List;
 
 @RestController
 @RequiredArgsConstructor
-@RequestMapping("/api/weight")
+@RequestMapping("/api/weights")
 public class WeightRecordController {
 
     private final WeightRecordService weightRecordService;
 
     @GetMapping
-    public List<WeightRecord> getAllWeightRecords() {
-        return weightRecordService.getAllRecords();
+    public List<WeightRecordResponse> getAllWeightRecords() {
+        return weightRecordService.getAllWeightRecords();
+    }
+
+    @PostMapping
+    public WeightRecordResponse saveWeightRecord(@RequestBody WeightRecordRequest request) { // POST 기능
+        return weightRecordService.saveWeightRecord(request);
+    }
+
+    @DeleteMapping("/{id}")
+    public void deleteWeightRecord(@PathVariable Long id) { // DELETE 기능
+        weightRecordService.deleteWeightRecord(id);
+    }
+
+    @PatchMapping("/{id}")
+    public WeightRecordResponse updateWeightRecord(@PathVariable Long id, @RequestBody WeightRecordRequest request) {
+        return weightRecordService.updateWeightRecord(id, request);
     }
 }

src/main/java/com/github/minuk1749/workout_tracker/domain/WeightRecord.java

@@ -15,8 +15,18 @@ public class WeightRecord {
     private Long id;
 
     @Column(nullable = false)
-    private Double weight;
+    private Double weight; //체중
 
     @Column(nullable = false)
-    private LocalDate recordedAt;
+    private LocalDate recordedAt; // 기록한 일시
+
+    public void update(Double weight, LocalDate recordedAt) {
+        this.weight = weight;
+        this.recordedAt = recordedAt;
+    }
+
+    public WeightRecord(Double weight, LocalDate recordedAt) {
+        this.weight = weight;
+        this.recordedAt = recordedAt;
+    }
 }

src/main/java/com/github/minuk1749/workout_tracker/dto/WeightRecordRequest.java

@@ -0,0 +1,12 @@
+package com.github.minuk1749.workout_tracker.dto;
+
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import java.time.LocalDate;
+
+@Getter
+@NoArgsConstructor
+public class WeightRecordRequest {
+    private Double weight;
+    private LocalDate recordedAt;
+}

src/main/java/com/github/minuk1749/workout_tracker/dto/WeightRecordResponse.java

@@ -0,0 +1,22 @@
+package com.github.minuk1749.workout_tracker.dto;
+
+import com.github.minuk1749.workout_tracker.domain.WeightRecord;
+import lombok.Getter;
+
+import java.time.LocalDate;
+
+@Getter
+public class WeightRecordResponse {
+
+    private final Long id;
+    private final Double weight;
+    private final LocalDate recordedAt;
+    /* 이 세개의 변수는 현재는 WeightRecord에 있는 변수 전부이지만
+       만약 WeightRecord에 변수가 여러개 만들어졌다면 그 중 원하는 것만 골라서 적으면 됨  */
+
+    public WeightRecordResponse(WeightRecord weightRecord) {
+        this.id = weightRecord.getId();
+        this.weight = weightRecord.getWeight();
+        this.recordedAt = weightRecord.getRecordedAt();
+    }
+}

src/main/java/com/github/minuk1749/workout_tracker/repository/WeightRecordRepository.java

@@ -4,5 +4,5 @@
 import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface WeightRecordRepository extends JpaRepository<WeightRecord, Long> {
-
+    //JpaRepository를 상속받기만 해도 저장,조회,삭제기능이 자동으로 생김
 }

src/main/java/com/github/minuk1749/workout_tracker/service/WeightRecordService.java

@@ -1,19 +1,45 @@
 package com.github.minuk1749.workout_tracker.service;
 
+import com.github.minuk1749.workout_tracker.dto.WeightRecordRequest;
 import com.github.minuk1749.workout_tracker.domain.WeightRecord;
+import com.github.minuk1749.workout_tracker.dto.WeightRecordRequest;
+import com.github.minuk1749.workout_tracker.dto.WeightRecordResponse;
 import com.github.minuk1749.workout_tracker.repository.WeightRecordRepository;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
 import java.util.List;
+import java.util.stream.Collectors;
 
 @Service
 @RequiredArgsConstructor
 public class WeightRecordService {
 
     private final WeightRecordRepository weightRecordRepository;
 
-    public List<WeightRecord> getAllRecords() {
-        return weightRecordRepository.findAll();
-    } // DB에 있는 체중기록 전부를 불러옴
+    public List<WeightRecordResponse> getAllWeightRecords () { //GET 기능
+        return weightRecordRepository.findAll()
+                .stream()
+                .map(WeightRecordResponse::new)
+                .collect(Collectors.toList());
+    }
+
+    public WeightRecordResponse saveWeightRecord(WeightRecordRequest request) { // POST 기능
+        WeightRecord weightRecord = new WeightRecord(request.getWeight(), request.getRecordedAt());
+        WeightRecord saved = weightRecordRepository.save(weightRecord); // 기본으로 있는 save기능 활용
+        return new WeightRecordResponse(saved);
+    }
+
+    public void deleteWeightRecord(Long id) { //DELETE 기능
+        weightRecordRepository.deleteById(id);
+    }
+
+    @Transactional
+    public WeightRecordResponse updateWeightRecord(Long id, WeightRecordRequest request) { // PATCH 기능
+        WeightRecord weightRecord = weightRecordRepository.findById(id)
+                .orElseThrow(() -> new RuntimeException("체중 기록을 찾을 수 없습니다"));
+        weightRecord.update(request.getWeight(), request.getRecordedAt());
+        return new WeightRecordResponse(weightRecord);
+    }
 }