validation 추가

src/main/java/com/example/daemawiki/domain/content/api/DocumentContentController.java

@@ -4,6 +4,7 @@
 import com.example.daemawiki.domain.content.dto.WriteContentRequest;
 import com.example.daemawiki.domain.content.service.AddContentTable;
 import com.example.daemawiki.domain.content.service.WriteContent;
+import jakarta.validation.Valid;
 import org.springframework.http.HttpStatus;
 import org.springframework.web.bind.annotation.*;
 import reactor.core.publisher.Mono;
@@ -21,7 +22,7 @@ public DocumentContentController(WriteContent writeContentService, AddContentTab
 
     @PatchMapping
     @ResponseStatus(HttpStatus.NO_CONTENT)
-    public Mono<Void> writeContent(@RequestBody WriteContentRequest request) {
+    public Mono<Void> writeContent(@Valid @RequestBody WriteContentRequest request) {
         return writeContentService.execute(request);
     }
 

src/main/java/com/example/daemawiki/domain/content/dto/WriteContentRequest.java

@@ -1,9 +1,16 @@
 package com.example.daemawiki.domain.content.dto;
 
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
+
 public record WriteContentRequest(
+        @NotBlank(message = "문서의 id를 입력해주세요.")
         String documentId,
+        @NotBlank(message = "내용을 추가하고 싶은 index를 입력해주세요.")
         String index,
+        @NotNull(message = "null은 내용이 될 수 없습니다.")
         String content,
+        @NotNull(message = "문서의 버전을 입력해주세요.")
         Integer version
 ) {
 }