loginservlet.java

一个基于ext的ajax小例子

/**
 * 
 */
package com.myext.servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.myext.entity.User;
import com.myext.service.LoginService;
import com.myext.service.ServiceBack;

/**
 * @author Administrator
 *
 */
public class LoginServlet extends BaseServlet {

	/**  serialVersionUID */
	private static final long serialVersionUID = 1L;

	/*
	 * (non-Javadoc)
	 * 
	 * @see javax.servlet.http.HttpServlet#service(javax.servlet.http.HttpServletRequest,
	 *      javax.servlet.http.HttpServletResponse)
	 */
	@Override
	protected void service(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		String userAccount = request.getParameter("userAccount");
		String passwd = request.getParameter("passwd");
		ServiceBack serviceBack = ((LoginService) getBean("loginService"))
				.checkUser(userAccount, passwd);
		if (serviceBack.isFailure) {
			 PrintWriter out = response.getWriter();
			 out.write(serviceBack.getErrorMsgWithJSON());
			 out.close();
		} else {
			 User loginUser = (User) serviceBack.getResultList().get(0);
			 request.getSession().setAttribute("loginUser", loginUser);
			 PrintWriter out = response.getWriter();
			 out.write("{success:true}");
			 out.close();
		}
	}
}