删除comment

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

@@ -43,4 +43,6 @@ public interface CommentDao {
      */
 
     List<CommentNode> querySecondCommentList(Integer UrlId);
+
+    public String queryChildId(String commentId);
 }

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

@@ -26,4 +26,6 @@ public interface CommentService {
     List<CommentNode> queryCommentByUrlId (Integer UrlId );
 
     CommentUser queryCommentUserById(Integer id);
+
+    public String SelectChildAndDelete(String commentId);
 }

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

@@ -10,6 +10,7 @@ import com.lovenav.entity.CommentUser;
 import com.lovenav.entity.User;
 import com.lovenav.service.CommentService;
 import io.swagger.models.auth.In;
+import org.checkerframework.checker.units.qual.C;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import java.util.HashMap;
@@ -169,5 +170,21 @@ public class CommentServiceImpl implements CommentService {
         }
         return firstList;
     }
+    public String SelectChildAndDelete(String commentId)
+    {
+
+        String child = commentDao.queryChildId(commentId);
+        String [] childrens = child.split(",");
+        int flag = 0;
+        for(String id : childrens)
+        {
+            flag = commentDao.deleteByPrimaryKey(Integer.valueOf(id));
+            if (String.valueOf(flag).equals("0")){
+                return "出现错误";
+            }
+        }
+        return "处理完成";
+    }
+
 
 }