Jquery Ajax struts2 提交 级联实现
Html代码
<div> 省份：<select id="province"> <option value="">请选择省份</option> </select> 城市：<select id="city"> <option value="">请选择城市</option> </select> </div>
$(document).ready(function(){ var province=$("#province"); var city=$("#city"); var provinceurl="/Struts2/base/selectProvince.action"; $.post(provinceurl,{code:"province"},function(data){ var dataObj=eval("("+data+")"); $.each(dataObj,function(index,item){ var tempOption = document.createElement("option"); tempOption.value = item.provinceId; tempOption.innerHTML = item.provinceName; province.append(tempOption); }); },"json"); province.change(function(){ city.empty(); var params={provinceCode:$('#province option:selected').val()}; $.post("/Struts2/base/selectCity.action",params,function(data){ alert(data); var dataObj=eval("("+data+")"); //转换为json对象 $.each(dataObj,function(index,item){ var tempOption = document.createElement("option"); tempOption.value = item.cityId; tempOption.innerHTML = item.cityName; city.append(tempOption); }); },"json"); }); }); ackage com.hyts.business.action; import java.util.List; import javax.servlet.http.HttpServletRequest; import net.sf.json.JSONArray; import com.hyts.dao.ProvinceDAO; import com.hyts.model.City; import com.hyts.model.Province; import com.opensymphony.xwork2.ActionSupport; public class ChainSelectAction extends ActionSupport { private static final long serialVersionUID = 1383189653446960523L; private HttpServletRequest request; private String result;//前台接收数据 private String provinceCode; public String selectProvince() { ProvinceDAO provinceDAO=new ProvinceDAO(); List<Province> list=provinceDAO.getAllProvince(); JSONArray jsonArray2 = JSONArray.fromObject( list ); this.result=jsonArray2.toString(); return SUCCESS; } public String selectCity() throws Exception{ ProvinceDAO provinceDAO=new ProvinceDAO(); System.out.println(this.provinceCode); int provinceId=Integer.parseInt(this.provinceCode); List<City> list=provinceDAO.getCityByProvince(provinceId); for(int i=0;i<list.size();i++) { City city=list.get(i); System.out.println(city.getCityName()); } JSONArray jsonArray = JSONArray.fromObject( list ); this.result=jsonArray.toString(); return SUCCESS; } public String getResult() { return result; } public void setResult(String result) { this.result = result; } public String getProvinceCode() { return provinceCode; } public void setProvinceCode(String provinceCode) { this.provinceCode = provinceCode; } public void setServletRequest(HttpServletRequest request) { this.request=request; } } Struts.xml <pre name="code" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <include file="struts-default.xml"/> <package name="/base" extends="json-default" namespace="/base"> <action name="selectProvince" method="selectProvince"> <result type="json"> <param name="root">result</param> </result> </action> <action name="selectCity" method="selectCity"> <result type="json"> <param name="root">result</param> </result> </action> </package> </struts> </pre> <br> <br> <br>