评论，回复，删评

src/main/java/com/lovenav/controller/CommentController.java

@@ -1,26 +1,53 @@
 package com.lovenav.controller;
 
+import com.alibaba.fastjson2.JSONObject;
 import com.lovenav.entity.Comment;
 import com.lovenav.service.CommentService;
 import com.lovenav.service.serviceImpl.CommentServiceImpl;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.*;
 
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
 import javax.servlet.http.HttpSession;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.Writer;
+import java.util.HashMap;
 
 @RestController
 @RequestMapping("/comment")
 public class CommentController {
     @Autowired
     private CommentService commentService;
-
+//  评论功能
-//    @GetMapping(value= "/AddLikeCount")
+@RequestMapping(method = RequestMethod.POST, value = "/reply_comment")
-//    public String AddLikeCount_Controller(HttpSession session){
+    public String Reply1(@RequestBody Comment comment){
-//        int id = (int) session.getAttribute("id");
+        return commentService.Reply1(comment);
-//        return commentService.AddLikeCount(id);
-//    }
-    @GetMapping(value= "/AddLikeCount")
-    public String AddLikeCount(int id){
-        return commentService.AddLikeCount(id);
     }
+
+//    回复功能
+@RequestMapping(method = RequestMethod.POST, value = "/comment")
+    public String Reply2(@RequestBody Comment comment){
+        return commentService.Reply2(comment);
+}
+//  删除功能
+@RequestMapping(method = RequestMethod.POST, value = "/delete_comment")
+    public String Delete(Comment comment){
+    return commentService.Delete(comment);
+}
+@RequestMapping(method = RequestMethod.GET, value = "/addLikeCount")
+    public String addLikeCount(int id){
+        return commentService.AddLikeCount(id);
+//        HttpServletResponse resp = null;
+//        PrintWriter writer = null;
+//        try {
+//            writer = resp.getWriter();
+//        } catch (IOException e) {
+//            throw new RuntimeException(e);
+//        }
+//        writer.println(commentService.AddLikeCount(id));
+    }
+
+
 }

src/main/java/com/lovenav/dao/CommentDao.java

@@ -5,6 +5,8 @@ import org.apache.ibatis.annotations.Mapper;
 import org.mybatis.spring.annotation.MapperScan;
 import org.springframework.stereotype.Repository;
 
+import java.util.List;
+
 @Repository
 @Mapper
 public interface CommentDao {
@@ -19,4 +21,6 @@ public interface CommentDao {
     int updateByPrimaryKeySelective(Comment record);
 
     int updateByPrimaryKey(Comment record);
+
+    List<Integer> selectByRootId(Integer rootid);
 }

src/main/java/com/lovenav/service/CommentService.java

@@ -6,5 +6,11 @@ import org.springframework.stereotype.Service;
 
 public interface CommentService {
 //    点赞
-    public String AddLikeCount(int id);
+    String AddLikeCount(int id);
+//    评论
+    String Reply1(Comment comment);
+//    回复
+    String Reply2(Comment comment);
+//    删除
+    String Delete(Comment comment);
 }

src/main/java/com/lovenav/service/serviceImpl/CommentServiceImpl.java

@@ -1,24 +1,78 @@
 package com.lovenav.service.serviceImpl;
 
+import com.alibaba.fastjson2.JSON;
 import com.alibaba.fastjson2.JSONObject;
 import com.lovenav.dao.CommentDao;
 import com.lovenav.entity.Comment;
 import com.lovenav.service.CommentService;
+import org.apache.ibatis.jdbc.Null;
 import org.mybatis.spring.annotation.MapperScan;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
+import java.util.HashMap;
+import java.util.List;
+
 @Service("commentService")
 public class CommentServiceImpl implements CommentService {
     @Autowired
     private CommentDao commentDao;
-
+//    评论功能
-    //    点赞++
+    @Override
+    public String Reply1(Comment comment){
+        int result = commentDao.insert(comment);
+        HashMap<String, Object> hashMap = new HashMap<>();
+        if(result > 0){
+            hashMap.put("msg", "评论成功");
+            return JSON.toJSONString(hashMap);
+        }
+        else{
+            hashMap.put("msg", "评论失败");
+            return JSON.toJSONString(hashMap);
+        }
+    }
+//    回复功能
+    @Override
+    public String Reply2(Comment comment){
+        List<Integer> list = commentDao.selectByRootId(comment.getRootCommentId());
+        if(list.size()<5){
+            commentDao.insert(comment);
+            return JSON.toJSONString(comment);
+        }else{
+            HashMap<String, Object> result = new HashMap<>();
+            result.put("code", 500);
+            result.put("msg", "回复超过上限");
+            String jsonString = JSONObject.toJSONString(result);
+            return JSON.toJSONString(result);
+        }
+    }
+//    删除
+    @Override
+    public String Delete(Comment comment){
+        int result = commentDao.deleteByPrimaryKey(comment.getId());
+        HashMap<String, Object> hashMap = new HashMap<>();
+        if (result > 0){
+            hashMap.put("msg", "删除成功");
+            String jsonString = JSONObject.toJSONString(hashMap);
+            return JSON.toJSONString(hashMap);
+        }else{
+            hashMap.put("msg","删除失败");
+            return JSON.toJSONString(hashMap);
+        }
+    }
+//    点赞++
     @Override
     public String AddLikeCount(int id){
         Comment comment = commentDao.selectByPrimaryKey(id);
+        if(comment.getLikeCount() == 0){
+
+        }
         comment.setLikeCount(comment.getLikeCount()+1);
-        commentDao.updateByPrimaryKey(comment);
+        int result = commentDao.updateByPrimaryKey(comment);
+        if(result>0){
             return JSONObject.toJSONString(comment.getLikeCount());
+        }else{
+            return JSONObject.toJSONString("点赞失败");
+        }
     }
 }

src/main/resources/mybatis/CommentDao.xml

@@ -144,4 +144,12 @@
       rating = #{rating,jdbcType=INTEGER}
     where id = #{id,jdbcType=INTEGER}
   </update>
+
+  <select id="selectByRootId" parameterType="java.lang.Integer" resultMap="BaseResultMap">
+    select
+        id
+    from ln_comment
+    where root_comment_id = #{rootCommentId,jdbcType=INTEGER}
+  </select>
+
 </mapper>