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
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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
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<!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。