欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  Java

java省市级联下拉菜单实例代码

程序员文章站 2022-05-08 12:41:10
...
本文实例为大家分享了java省市级联的具体代码,供大家参考,具体内容如下

1.LoadAreaServlet.java

package com.scce.servlet;
  
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
  
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
  
import net.sf.json.JSONArray;
  
import com.scce.pojo.City;
import com.scce.pojo.Prov;
  
public class LoadAreaServlet extends HttpServlet {
  
    
    
  private static final long serialVersionUID = 1L;
  
  public void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
      this.doPost(request, response);
  }
  
    
  public void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    response.setContentType("text/html;charset=utf-8");
    request.setCharacterEncoding("utf-8");
    PrintWriter out = response.getWriter();
    ArrayList<Prov> provs = new ArrayList<Prov>();
    String provinceID = request.getParameter("provinceID");
    if (provinceID=="" || provinceID==null) {
      System.out.println("加载地级市信息");
    Prov pro1 = new Prov();
    pro1.setId(0);
    pro1.setProvinceName("湖北");
    Prov pro2 = new Prov();
    pro2.setId(1);
    pro2.setProvinceName("湖南");
    Prov pro3 = new Prov();
    pro3.setId(2);
    pro3.setProvinceName("广东");
    Prov pro4 = new Prov();
    pro4.setId(3);
    pro4.setProvinceName("广西");
    provs.add(pro1);
    provs.add(pro2);
    provs.add(pro3);
    provs.add(pro4);
    System.out.println(JSONArray.fromObject(provs).toString()); //[{"id":0,"provinceName":"湖北"},{}]
    out.print(JSONArray.fromObject(provs).toString());
    }else{
      ArrayList<City> citys = new ArrayList<City>();
      if (provinceID.equals("0")) {
        City city1 = new City();
        city1.setId(0);
        city1.setCityName("武汉市");
        City city2 = new City();
        city2.setId(1);
        city2.setCityName("黄石市");
        City city3 = new City();
        city3.setId(2);
        city3.setCityName("十堰市");
        citys.add(city1);
        citys.add(city2);
        citys.add(city3);
      }
      if (provinceID.equals("1")) {
        City city1 = new City();
        city1.setId(0);
        city1.setCityName("长沙市");
        City city2 = new City();
        city2.setId(1);
        city2.setCityName("岳阳市");
        City city3 = new City();
        city3.setId(2);
        city3.setCityName("湘潭市");
        citys.add(city1);
        citys.add(city2);
        citys.add(city3);
      }
      System.out.println(JSONArray.fromObject(citys).toString());
      out.print(JSONArray.fromObject(citys).toString());
    }  
  }
    
  
}

2.test1.html

<!DOCTYPE html>
<html>
 <head>
  <title>chapter4-test1</title>
    
  <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
  <meta http-equiv="description" content="this is my page">
  <meta http-equiv="content-type" content="text/html; charset=UTF-8">
    
   
  
 <link rel="stylesheet" href="../UI/themes/icon.css" type="text/css"></link>
   
 <link rel="stylesheet" href="../UI/themes/default/easyui.css" type="text/css"></link>
   
 <!-- <script type="text/javascript" src="../js/jquery-1.8.2.min.js"></script> -->
 <script type="text/javascript" src="../UI/jquery.min.js"></script>
 <script type="text/javascript" src="../UI/jquery.easyui.min.js"></script>
   
 <script type="text/javascript" src="../UI/locale/easyui-lang-zh_CN.js"></script>
 <script type="text/javascript">
 //LoadAreaServlet
  /* var dataCombobox=[{"id":1,"provinceName":"湖北省"}, 
    {"id":2,"provinceName":"湖南省","selected":true},
    {"id":3,"provinceName":"河北省"},
    {"id":4,"provinceName":"河南省"}
  ]; */
 $(function () {
       $("#province").combobox({
         width: 150,
         valueField: 'id', //1
         textField: 'provinceName', // 湖北省              
         editable: false,
        // data:dataCombobox //指定下拉列表的数据源
        url:'../LoadAreaServlet',
        method:'post',
        onLoadSuccess:function(data){
            
          var provId = $("#province").combobox("getValue");
            
          loadCity(provId);
        },
        onSelect:function(recode){
          loadCity(recode.id);
        }
          
       });
     });
  
     function loadCity(provId){
       $("#city").combobox({
         width: 150,
         valueField: 'id', //1
         textField: 'cityName', // 湖北省              
         editable: false,
        // data:dataCombobox //指定下拉列表的数据源
        url:'../LoadAreaServlet?provinceID='+provId,
        method:'post'
       });
     }
   
 </script>
 </head>
   
 <body> 
  省:
  <select id="province" >
     <option value="0">数据加载中..</option>
         
  </select>
  <br/>
    
  市:
  <select id="city" >
     <option value="">数据加载中..</option>
  </select>
   
   
 </body>
</html>

以上就是本文的全部内容,希望对大家学习java程序设计有所帮助。

更多java省市级联下拉菜单实例代码相关文章请关注PHP中文网!