Recently in the front-end developer, redirect users to use sendRedirect always appear problem,
This is my folder structure:

Servletdemo1 code is as follows:

 
Package com. Wx. Servlet. 

The import javax.mail. Servlet. ServletException; 
import javax.servlet.annotation.WebServlet; 
import javax.servlet.http.HttpServlet; 
The import javax.mail. Servlet. HTTP. It; 
The import javax.mail. Servlet. HTTP. HttpServletResponse; 
import java.io.IOException; 

@ WebServlet (name="Servletdemo1") 
Public class Servletdemo1 extends the HttpServlet {
Protected void doPost (it request, HttpServletResponse response) throws ServletException, IOException {

} 

Protected void doGet (it request, HttpServletResponse response) throws ServletException, IOException {
//to redirect 
The response. SendRedirect ("./jspdemo1/not JSP "); 
} 
} 

The JSP page code is as follows:

 
<% -- -- 
Created by IntelliJ IDEA. 
User: W 
Date: 2020/6/11 
Time: 
"To change this template use File | Settings | File Templates. 
- % & gt; 
<% @ page contentType="text/HTML. Charset=utf-8 "language=" Java "% & gt;