feat: CommentGet 추가

src/main/java/se/issuetrackingsystem/comment/controller/CommentController.java

@@ -2,10 +2,17 @@
 
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 import se.issuetrackingsystem.comment.dto.CommentRequest;
+import se.issuetrackingsystem.comment.dto.CommentResponse;
 import se.issuetrackingsystem.comment.service.CommentService;
 import se.issuetrackingsystem.comment.domain.Comment;
+import se.issuetrackingsystem.issue.domain.Issue;
+import se.issuetrackingsystem.issue.dto.IssueResponse;
+
+import java.util.ArrayList;
+import java.util.List;
 
 @Slf4j
 @RequestMapping("api/v1/comments")
@@ -29,4 +36,14 @@ public void commentDelete(@RequestParam("commentId") Long commentid){
     public void commentModify(@RequestParam("commentId") Long commentid, @RequestBody CommentRequest commentRequest){
         this.commentService.modify(commentid,commentRequest.getMessage());
     }
+
+    @GetMapping
+    public ResponseEntity<List<CommentResponse>> commentListGet(@RequestParam("issueId")Long issueid){
+        List<Comment> comments = this.commentService.getList(issueid);
+        List<CommentResponse> responses = new ArrayList<>();
+        for(Comment i : comments){
+            responses.add(new CommentResponse(i));
+        }
+        return ResponseEntity.ok(responses);
+    }
 }

src/main/java/se/issuetrackingsystem/comment/dto/CommentResponse.java

@@ -0,0 +1,29 @@
+package se.issuetrackingsystem.comment.dto;
+
+import lombok.Getter;
+import lombok.Setter;
+import se.issuetrackingsystem.comment.domain.Comment;
+import se.issuetrackingsystem.user.domain.User;
+
+import java.time.LocalDateTime;
+
+@Getter
+@Setter
+public class CommentResponse {
+    private Long id;
+
+    private String message;
+
+    private LocalDateTime created_at;
+
+    private Long authorid;
+
+    public CommentResponse(Comment comment){
+        this.id= comment.getId();
+        this.message=comment.getMessage();
+        if(comment.getAuthor()!=null){
+            this.authorid= comment.getAuthor().getId();
+        }
+        this.created_at=comment.getCreated_at();
+    }
+}

src/main/java/se/issuetrackingsystem/comment/service/CommentService.java

@@ -47,7 +47,7 @@ public void delete(Long commentid){
     }
 
     public List<Comment> getList(Long issueid){
-        Issue issue = this.issueRepository.findById(issueid).get();
+        Issue issue = this.issueRepository.findById(issueid).orElseThrow(()->new CustomException(ErrorCode.ISSUE_NOT_FOUND));
         List<Comment> comments = this.commentRepository.findAllByIssue(issue);
         return comments;
     }