ztree 增删修改---增加节点

前言

暂为最后一篇，节点的添加有点难，因为需要自己自行添加。

实现

addhover 函数请仔细看看，具体代码如下：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
















jsp/servelt 目录树的添加、删除和修改（请不要删除根节点）

			

		

 

CityImpl 添加函数：

public void addCity(Integer pId, String city) {
		Connection conn = null;
		PreparedStatement ps = null;
		try{   
				conn = DbUtil.getConnection();
				String sql = "insert into essaytype(parent_id,province) values(?,?)";
				ps = conn.prepareStatement(sql);
				ps.setInt(1, pId);
				ps.setString(2, city);
				ps.execute();	
			}catch(Exception e){
				e.printStackTrace();
			}finally{
				DbUtil.closeAll(conn, ps);
			}
	
	}

AddCityServlet代码：

package util;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


import net.sf.json.JSONObject;

/**
 * Servlet implementation class AddCityServlet
 */
@WebServlet("/AddCityServlet")
public class AddCityServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
    private CityDAO c = new CityImpl();
    /**
     * @see HttpServlet#HttpServlet()
     */
    public AddCityServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		Integer parentId = Integer.parseInt(request.getParameter("parentId"));
		String  city = request.getParameter("city");
		String msg ="";
		c.addCity(parentId, city);
		msg = "添加成功！";                     //我这里默认添加成功了，你可以设置异常，然后分情况
		JSONObject jO = new JSONObject();
		jO.put("success", true);
		jO.put("msg", msg);
		response.setContentType("application/json;charset=utf-8");
		response.getWriter().println(jO.toString());
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doGet(request, response);
	}

}

 

效果示意图：

结束语

这个系列到这就结束把，基本可以满足需求了，至于拖拽的实现，目前我没仔细学过，如果有需要的，请留言告知，我后期补上~！

代码地址

https://github.com/SpecialYy/ztree-demo-practice