validateaction.java

struts hibernate框架 商场买卖

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

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;

import com.shopping.dao.UnifyDao;
import com.shopping.factory.DAOFactory;

/** 
 * MyEclipse Struts
 * Creation date: 04-13-2008
 * 
 * XDoclet definition:
 * @struts.action validate="true"
 */
public class ValidateAction 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) {
		
		UnifyDao ud = null;
		try {
			ud = (UnifyDao)DAOFactory.getBean("com.shopping.dao.imp.UserDaoImp");
		} catch (InstantiationException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		} catch (IllegalAccessException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		} catch (ClassNotFoundException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}
		response.setContentType("text/xml");
		response.setHeader("Cache-Control", "no-store"); //HTTP1.1
		response.setHeader("Pragma", "no-cache"); //HTTP1.0
		response.setDateHeader("Expires", 0); //prevents catching at proxy server
		String name = request.getParameter("id");
		System.out.println(name);
		if(ud.getTableByName(name)==null){
			try {
				response.getWriter().write("<msg>valid</msg>");
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		else{
			try {
				response.getWriter().write("<msg>invalid</msg>");
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		return null;
	}
}