下面是代码，本人没有动那个web.xml
package controller;
import java.io.IOException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import domain.User;
import service.UserService;
public class LoginServlet extends HttpServlet
{
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException
{
doPost(req, resp);
}
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException
{
String username = req.getParameter("username");
String userpsw = req.getParameter("userpsw");
User user = new User();
user.setUsername(username);
user.setUserpsw(userpsw);
HttpSession session = req.getSession();
String forward = "";
if (UserService.CheckLogin(user))
{
forward = "success.jsp";
session.setAttribute("name", username);
}
else
{
forward = "error.jsp";
}
RequestDispatcher rd = req.getRequestDispatcher(forward);
rd.forward(req, resp);
}
}
<%@ page language="java" import="java.util.*" pageEncoding="gbk"%> <html> <head> <title>login</title> </head> <body> <form action="login" method="post"> 用户名称：<input type="text" name="username" value=""><br> 用户密码：<input type="password" name="userpsw" value=""><br> <input type="submit" name="submit" value="登陆"> <input type="reset" name="reset" value="重写"> </form> </body> </html>
解决方案
10
404很明显，跳转的路径不存在
5
你就写个success.jsp，也不写个路径，他没找到。给齐纳买加上路径就行了
5
浏览器中URL地址写错了，或web.xml中action没有和form表单中的action对应上。
反正404肯定过是路径问题
反正404肯定过是路径问题
5
你看看你要跳转的路径，你再看看你404界面浏览器的地址
20
<filter> <filter-name>Servlet</filter-name> <filter-class>你的包名加类名</filter-class> </filter> <filter-mapping> <filter-name>Servlet</filter-name> <url-pattern>/</url-pattern> </filter-mapping>
加到里边
CodeBye 版权所有丨如未注明 , 均为原创丨本网站采用BY-NC-SA协议进行授权 , 转载请注明登陆界面，点登陆后直接跳转到404界面了，不是跳转到本人指定的界面，怎么解决！
