spring-migration/src/main/java/com/example/migration/controller/SampleController.java

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+package com.example.migration.controller;
+
+import com.example.migration.dto.ApiResponse;
+import com.example.migration.dto.SampleRequest;
+import com.example.migration.dto.SampleResponse;
+import com.example.migration.exception.ResourceNotFoundException;
+import com.example.migration.service.SampleService;
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+/**
+ * 샘플 REST 컨트롤러 - Spring Boot 전환 후 @RestController 사용 예시
+ */
+@RestController
+@RequestMapping("/api/samples")
+@RequiredArgsConstructor
+public class SampleController {
+
+    private final SampleService sampleService;
+
+    @GetMapping
+    public ResponseEntity<ApiResponse<List<SampleResponse>>> getAllSamples() {
+        List<SampleResponse> samples = sampleService.getAllSamples();
+        return ResponseEntity.ok(ApiResponse.success(samples));
+    }
+
+    @GetMapping("/{id}")
+    public ResponseEntity<ApiResponse<SampleResponse>> getSampleById(@PathVariable Long id) {
+        SampleResponse response = sampleService.getSampleById(id);
+        return ResponseEntity.ok(ApiResponse.success(response));
+    }
+
+    @PostMapping
+    public ResponseEntity<ApiResponse<SampleResponse>> createSample(
+            @Valid @RequestBody SampleRequest request) {
+        SampleResponse response = sampleService.createSample(request);
+        return ResponseEntity.status(HttpStatus.CREATED)
+                .body(ApiResponse.success(response));
+    }
+
+    @PutMapping("/{id}")
+    public ResponseEntity<ApiResponse<SampleResponse>> updateSample(
+            @PathVariable Long id,
+            @Valid @RequestBody SampleRequest request) {
+        SampleResponse response = sampleService.updateSample(id, request);
+        return ResponseEntity.ok(ApiResponse.success(response));
+    }
+
+    @DeleteMapping("/{id}")
+    public ResponseEntity<ApiResponse<Void>> deleteSample(@PathVariable Long id) {
+        sampleService.deleteSample(id);
+        return ResponseEntity.ok(ApiResponse.success(null));
+    }
+}