package ZTBU;
import java.io.IOException;
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 javax.servlet.http.HttpSession;
import org.apache.catalina.User;
@WebServlet(name="login",urlPatterns="/login")
public class LoginServlet extends HttpServlet {
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
String name=req.getParameter("name");
String password=req.getParameter("password");
String page="login.jsp";
//加入扩展内容：登陆成功跳转到主页，失败返回原页面；
if("admin".equals(name) || "zhangsan".equals(name)) {
if("123".equals(password)) {
User user=new User(name,password);
HttpSession session=req.getSession();
session.setAttribute("user", user);
//session.setMaxInactiveInterval(10);//session 最大存活
resp.sendRedirect("IndexServlet");
return;
}else {
req.setAttribute("error", "用户密码错误");
}
}else
{
req.setAttribute("error", "用户名错误");
}
//转发
req.getRequestDispatcher(page).forward(req, resp);
}
}