javaweb请求转发跳转

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 java.io.IOException;

@WebServlet("/s04")
/*
* 请求转发
* req.getRequestDispatcher("s03").forward(req,resp);
* 可以让请求从服务端跳转到客户端 或者跳转到servlet
* 服务端行为
* 1:地址栏不改变
* 2：服务端行为
* 3从始自终只有一个请求
* 4request数据可以共享
* */
public class servlet04 extends HttpServlet {

    @Override
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //接受参数
        String uname = req.getParameter("uname");
        System.out.println("uname04" + uname);
        //请求跳转到04
        //req.getRequestDispatcher("s03").forward(req,resp);
        //请求转发跳转到jsp页面
        //req.getRequestDispatcher("login.jsp").forward(req,resp);
        req.getRequestDispatcher("login.html").forward(req,resp);
    }
}

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