10_LoginServlet

最新推荐文章于 2025-01-02 21:08:39 发布

原创最新推荐文章于 2025-01-02 21:08:39 发布 · 169 阅读

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LoginServlet.java

@WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
   IUserService userService=new UserServiceImpl();
	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		response.setContentType("text/html;charset=utf-8");
		String username=request.getParameter("username");
		String password=request.getParameter("password");
		User user=userService.login(username, password);
		if(user==null){
			response.getWriter().write("登陆失败,用户名或密码错误,3秒转回登陆页面");
			response.setHeader("refresh", "3;url="+request.getContextPath()+"/login.jsp");
		}else{
			request.getSession().setAttribute("loginUsername", user.getUsername());
			response.getWriter().write("登陆成功,3秒后进入主页");
			response.setHeader("refresh", "3;url="+request.getContextPath()+"/main.jsp");
		}
	}
}

main.jsp

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
欢迎你 ${loginUsername} 
</body>
</html>