【各类路径写法】以/开头，看这个路径是写个服务器的还是写给浏览器的

package com.xiaozhi.controller;

import java.io.IOException;
import java.util.Enumeration;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.beanutils.BeanUtils;

import com.xiaozhi.bean.User;

public class ServletDemo extends HttpServlet
{
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
//1写给服务器
request.getRequestDispatcher("/index.jsp").forward(request, response);

//2写给服务器
this.getServletContext().getRealPath("/index.jsp");
this.getServletContext().getResourceAsStream("/index.jsp");

//3写给浏览器
response.sendRedirect("/HelloJavaweb/index.jsp");

//4index页面:写给浏览器
/*
<a href="/HelloJavaweb/index.jsp">点点</a>

<form acton="/HelloJavaweb/index.jsp">

</form>

*/

}

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