java - Java 中 HttpServlet 类型错误的方法未定义

Question

当我使用响应方法时，我收到上述消息，并且我没有任何关于如何修复它的线索，我有 java servlet 3.1，这似乎是我在其他地方可以找到可以解决它的唯一答案.

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;

public class login extends HttpServlet {

protected void doPost(HttpServletRequest request, HttpServlet response) throws ServletException, IOException {
    response.setContentType("text/html;charset=UTF-8");
    PrintWriter out = response.getWriter();

    String username = request.getParameter("username");
    String password = request.getParameter("password");

    if(Validate.checkUser(username, password))
    {
        RequestDispatcher rs = request.getRequestDispatcher("Welcome");
        rs.forward(request, response);
    }
    else
    {
        out.println("Username or Password incorrect");
        RequestDispatcher rs = request.getRequestDispatcher("login.html");
        rs.include(request, response);
    }
}

}

Answer 1

检查你的发帖方法 HttpServlet有 doPost 方法，它接受 HttpServleRequest 和 HttpServletResponse 参数

protected void doPost(HttpServletRequest request, HttpServlet response) throws ServletException, IOException {

至

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws     ServletException, IOException {