move insert comment biz logic to service, fix controller, import

Author: yennanliu

springBootBlog/src/main/java/com/yen/mdblog/controller/CommentController.java

@@ -1,6 +1,5 @@
 package com.yen.mdblog.controller;
 
-import com.yen.mdblog.entity.Po.Comment;
 import com.yen.mdblog.entity.Vo.CreateComment;
 import com.yen.mdblog.service.CommentService;
 import lombok.extern.log4j.Log4j2;
@@ -10,7 +9,6 @@
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestMethod;
 import java.security.Principal;
-import java.util.Date;
 
 @Controller
 @RequestMapping("/comment")
@@ -23,15 +21,15 @@ public class CommentController {
     @RequestMapping(value="/create", method= RequestMethod.POST)
     public String createComment(CreateComment request, Model model, Principal principal){
 
-        Comment comment = new Comment();
-        comment.setUserName(principal.getName());
-        comment.setPostId(request.getPostId());
-        comment.setCommentContent(request.getCommentContent());
-        comment.setCreateTime(new Date());
-        log.info("(CommentController) create new comment = " + comment.toString());
-        commentService.insertComment(comment);
-        model.addAttribute("user", principal.getName());
-        return "comment/comment_success";
+        String userName = principal.getName();
+        Long postId = request.getPostId();
+        String commentContent = request.getCommentContent();
+        Boolean createCommentSuccess = commentService.insertComment(userName, postId, commentContent);
+        if (createCommentSuccess) {
+            return "comment/comment_success";
+        }else{
+            return "create comment failed";
+        }
     }
 
 }

springBootBlog/src/main/java/com/yen/mdblog/service/CommentService.java

@@ -8,5 +8,5 @@ public interface CommentService {
 
     List<Comment> getCommentsByPostId(Long postId);
 
-    void insertComment(Comment comment);
+    Boolean insertComment(String userName, Long postId, String commentContent);
 }

springBootBlog/src/main/java/com/yen/mdblog/service/impl/CommentServiceImpl.java

@@ -3,12 +3,15 @@
 import com.yen.mdblog.entity.Po.Comment;
 import com.yen.mdblog.mapper.CommentMapper;
 import com.yen.mdblog.service.CommentService;
+import lombok.extern.log4j.Log4j2;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
+import java.util.Date;
 import java.util.List;
 
 @Service
+@Log4j2
 public class CommentServiceImpl implements CommentService {
 
     @Autowired
@@ -21,9 +24,21 @@ public List<Comment> getCommentsByPostId(Long postId) {
     }
 
     @Override
-    public void insertComment(Comment comment) {
-
-        commentMapper.insertComment(comment);
+    public Boolean insertComment(String userName, Long postId, String commentContent) {
+
+        try{
+            Comment comment = new Comment();
+            comment.setUserName(userName);
+            comment.setPostId(postId);
+            comment.setCommentContent(commentContent);
+            comment.setCreateTime(new Date());
+            log.info("create comment OK");
+            commentMapper.insertComment(comment);
+            return true;
+        }catch (Exception e){
+            log.warn("create comment failed : " + e);
+            return false;
+        }
     }
 
 }