loginservlet.java

java web网络编程示例,原代码资源

package edu.liusong.servlet;

import java.io.IOException;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import edu.liusong.common.*;
import edu.liusong.dao.UserDAO;
import edu.liusong.mo.User;

public class LoginServlet extends HttpServlet {
	UserDAO userDAO = new UserDAO();

	/**
	 * The doPost method of the servlet. <br>
	 * 
	 * This method is called when a form has its tag value method equals to
	 * post.
	 * 
	 * @param request
	 *            the request send by the client to the server
	 * @param response
	 *            the response send by the server to the client
	 * @throws ServletException
	 *             if an error occurred
	 * @throws IOException
	 *             if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		List list = userDAO.getUserByName(request.getParameter("name"));
		if (list.size() > 0) {
			User user = (User) list.iterator().next();
			if(user.getVerification().equals("等待审批")){
//				request.setAttribute("msg", "用户等待审批中,如果长时间无法审批通过请联系管理员。注册注意事项：本站只对软件系教职工开放注册!");
//				request.getRequestDispatcher("/login.jsp").forward(request, response);
				String []params={"msg"};
				String []values={"用户等待审批中,如果长时间无法审批通过请联系管理员。注册注意事项：本站只对软件系教职工开放注册!"};
				response.sendRedirect(URLEncoder.encodeURL("login.jsp",params,values,"utf-8"));
			}else{
				String temp=new MD5().getMD5ofStr(request.getParameter("password"));
				if (user.getPassword().equals(temp)) {
					request.getSession(true).setAttribute("user", user);
					//request.getRequestDispatcher("/index.jsp").forward(request, response);
					response.sendRedirect("index.jsp");
				} else {
					String []params={"msg"};
					String []values={"密码错误，请重新输入!"};
					response.sendRedirect(URLEncoder.encodeURL("login.jsp",params,values,"utf-8"));
				}
			}

		} else {
			String []params={"msg"};
			String []values={"用户名不存在，请注册"};
			response.sendRedirect(URLEncoder.encodeURL("login.jsp",params,values,"utf-8"));
		}
	}

}