Java Web學習(30)： 使用JSP+Servlet+JavaBean實現使用者登入
阿新 • • 發佈：2019-01-04
package com.servlet;
import java.io.IOException;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.entity.Users;
/**
* Servlet implementation class LoginServlet
*/
@WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public LoginServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see Servlet#init(ServletConfig)
*/
public void init(ServletConfig config) throws ServletException {
// TODO Auto-generated method stub
}
/**
* @see Servlet#destroy()
*/
public void destroy() {
// TODO Auto-generated method stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doPost(request, response);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
request.setCharacterEncoding("UTF-8");//防止中文亂碼
Users user = new Users();
String username = request.getParameter("username");
String password = request.getParameter("password");
user.setUsername(username);
user.setPassword(password);
//把註冊成功的使用者物件儲存在session物件中
request.getSession().setAttribute("loginUser", user);
//判斷使用者名稱是否合法
if(user.getUsername().equals("admin")&&user.getPassword().equals("admin")){
response.sendRedirect(request.getContextPath()+"/login_success2.jsp");
}else{
request.getRequestDispatcher("/login_failure.jsp").forward(request, response);
}
}
}