添加评论回复功能

src/com/landaiqing/dao/UserDao.java

@@ -72,4 +72,34 @@ public class UserDao {
             JdbcUtils.closeConnection(null, preparedStatement, connection);
         }
     }
+
+    /**
+     * 回复评论
+     * */
+    public int reply(UserEntity userEntity){
+        Connection connection = null;
+        PreparedStatement preparedStatement = null;
+        try {
+            connection = JdbcUtils.getConnection();
+            JdbcUtils.beginTransaction(connection);
+            preparedStatement = connection.prepareStatement("UPDATE `webguestbook`.`user` SET `replyContent` = ?, `replyDateTime` = ? WHERE `userId` = ?;");
+//            preparedStatement.setInt(1,userEntity.getUserId());
+            preparedStatement.setString(1,userEntity.getReplyContent());
+            preparedStatement.setDate(2,userEntity.getReplyDateTime());
+            preparedStatement.setInt(3,userEntity.getUserId());
+//            preparedStatement.setString(4,userEntity.getContent());
+//            preparedStatement.setDate(5, new Date(userEntity.getDateTime().getTime()));
+
+            Integer result = preparedStatement.executeUpdate();
+            JdbcUtils.commitTransaction(connection);
+            return result;
+
+        } catch (SQLException e) {
+            JdbcUtils.rollBackTransaction(connection);
+            throw new RuntimeException(e);
+
+        } finally {
+            JdbcUtils.closeConnection(null, preparedStatement, connection);
+        }
+    }
 }

src/com/landaiqing/service/UserService.java

@@ -19,4 +19,11 @@ public class UserService {
     public int insert(UserEntity userEntity){
         return userDao.insert(userEntity);
     }
+
+    /**
+     * 回复评论
+     * */
+    public int reply(UserEntity userEntity){
+        return userDao.reply(userEntity);
+    }
 }

src/com/landaiqing/servlet/ReplyServlet.java

@@ -0,0 +1,54 @@
+package com.landaiqing.servlet;
+
+import com.landaiqing.entity.UserEntity;
+import com.landaiqing.service.UserService;
+import com.mysql.cj.util.StringUtils;
+import jakarta.servlet.ServletException;
+import jakarta.servlet.annotation.WebServlet;
+import jakarta.servlet.http.HttpServlet;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+
+import java.io.IOException;
+import java.util.Date;
+
+@WebServlet("/reply")
+public class ReplyServlet extends HttpServlet {
+    private UserService userService=new UserService();
+    @Override
+    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        try {
+            String userId = req.getParameter("userId");
+            if (StringUtils.isNullOrEmpty(userId)){
+                req.setAttribute("errorMsg","userId 的值不能为空!!!");
+                req.getRequestDispatcher("error.jsp").forward(req,resp);
+                return;
+            }
+            String replyContent = req.getParameter("replyContent");
+            if (StringUtils.isNullOrEmpty(replyContent)){
+                req.setAttribute("errorMsg","content 的值不能为空!!!");
+                req.getRequestDispatcher("error.jsp").forward(req,resp);
+                return;
+            }
+            Date time = new java.sql.Date(new java.util.Date().getTime());
+
+            UserEntity userEntity=new UserEntity();
+            userEntity.setUserId(Integer.valueOf(userId));
+            userEntity.setReplyContent(replyContent);
+            userEntity.setReplyDateTime((java.sql.Date) time);
+
+            int result = userService.reply(userEntity);
+            if (result<=0){
+                req.setAttribute("errorMsg","插入失败!!!");
+                req.getRequestDispatcher("error.jsp").forward(req,resp);
+                return;
+            }
+
+            resp.sendRedirect("index.jsp");
+        } catch (Exception e) {
+            req.setAttribute("errorMsg","系统异常!!!");
+            req.getRequestDispatcher("error.jsp").forward(req,resp);
+            throw new RuntimeException(e);
+        }
+    }
+}

web/index.jsp

@@ -251,21 +251,21 @@
                         </div>
                     </div>
                 </div>
-                <div class="comments">
+<%--                <div class="comments">--%>
-                    <div class="comment-wrap">
+<%--                    <div class="comment-wrap">--%>
-                        <div class="photo">
+<%--                        <div class="photo">--%>
-                            <div class="avatar" style="background-image: url('./static/img/头像修改.png')"></div>
+<%--                            <div class="avatar" style="background-image: url('./static/img/头像修改.png')"></div>--%>
-                        </div>
+<%--                        </div>--%>
-                        <div class="comment-block">
+<%--                        <div class="comment-block">--%>
-                            <form action="">
+<%--                            <form action="">--%>
-                                        <textarea name="" cols="30" rows="3" placeholder="Say somthing..."
+<%--                                        <textarea name="content" id="replyContent" cols="30" rows="3" placeholder="Say somthing..."--%>
-                                                  style="resize:none"></textarea>
+<%--                                                  style="resize:none"></textarea>--%>
-                                <button type="button" class="layui-btn layui-btn-xs">
+<%--                                <button type="button" class="layui-btn layui-btn-xs" onclick="reply(${list.userId})">--%>
-                                    <i class="layui-icon layui-icon-release"></i> 回复
+<%--                                    <i class="layui-icon layui-icon-release"></i> 回复--%>
-                                </button>
+<%--                                </button>--%>
-                            </form>
+<%--                            </form>--%>
-                        </div>
+<%--                        </div>--%>
-                    </div>
+<%--                    </div>--%>
                     </c:when>
                     <c:otherwise>
                     <div class="comments">
@@ -275,9 +275,9 @@
                             </div>
                             <div class="comment-block">
                                 <form action="">
-                                        <textarea name="" id="" cols="30" rows="3" placeholder="Say somthing..."
+                                        <textarea name="" id="replyContent"  cols="30" rows="3" placeholder="Say somthing..."
                                                   style="resize:none"></textarea>
-                                    <button type="button" class="layui-btn layui-btn-xs">
+                                    <button type="button" class="layui-btn layui-btn-xs" onclick="reply(${list.userId})">
                                         <i class="layui-icon layui-icon-release"></i> 回复
                                     </button>
                                 </form>
@@ -329,7 +329,7 @@
                     })
 
                 })
-
+                // 发布评论
                 function publish() {
                     var name = document.getElementById('name').value;
                     var qq = document.getElementById('qq').value;
@@ -353,7 +353,24 @@
                         console.log(result);
                     })
                 }
-
+                // 回复
+                function reply(userId){
+                    var content = document.getElementById('replyContent').value;
+                    axios({
+                        // 请求方式
+                        method: 'post',
+                        // 请求的地址
+                        url: 'http://localhost:8080${pageContext.request.contextPath}/reply',
+                        // URL 中的查询参数
+                        params: {
+                            userId: userId,
+                            replyContent:content
+                        }
+                    }).then(function (result) {
+                        //定位 span  id 名称 error 修改
+                        console.log(result);
+                    })
+                }
 
                 $(function () {
                     // 还能输入的字得个数