这篇文章主要为大家详细介绍了java省市级联实例代码，具有一定的参考价值，感兴趣的朋友可以参考一下
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 provs = new ArrayList(); 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 citys = new ArrayList(); 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(city<em style="color:transparent">来源[email protected]搞@^&代*@码)网</em>1); 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
<title>chapter4-test1</title><!-- --> 省： 数据加载中..<br /> 市： 数据加载中..
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转载请注明原文链接：java省市级联下拉菜单实例代码
转载请注明原文链接：java省市级联下拉菜单实例代码
