selectaction.java

ajax的例子

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package com.huatek.easion.struts.action;

import java.io.IOException;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

/** 
 * MyEclipse Struts
 * Creation date: 04-08-2008
 * 
 * XDoclet definition:
 * @struts.action validate="true"
 */
public class SelectAction extends Action {
	/*
	 * Generated Methods
	 */

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		response.setContentType("text/xml");
		response.setHeader("Cache-Control","no-cache");
		String province = request.getParameter("province");
		StringBuffer cityBf = new StringBuffer("<state>");
		if("1".equals(province)){
			cityBf.append("<city><name>hangzhou</name><value>1</value></city><city><name>huzhou</name><value>2</value></city>");
		}else if("2".equals(province)){
			cityBf.append("<city><name>hefei</name><value>1</value></city><city><name>suzhou</name><value>2</value></city>");
		}
		
		cityBf.append("</state>");
		try {
			response.getWriter().write(cityBf.toString());
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return null;
	}
}