04.请求转发RequestDispatcher

 

 

package com.ivan.web;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/DispatcherDemo")
public class DispatcherDemo extends HttpServlet{
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        // TODO Auto-generated method stub
        RequestDispatcher rd = req.getRequestDispatcher("/DispatcherDemo2");
        rd.forward(req, resp);
        
    }
}

 

package com.ivan.web;

import java.io.IOException;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/DispatcherDemo2")
public class DispatcherDemo2 extends HttpServlet{
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        // TODO Auto-generated method stub
        //解决乱码问题
//        resp.setContentType("text/html");
//        resp.setCharacterEncoding("utf-8");
        
        //默认编码是ISO-8859-1 该编码木有中文
        resp.setHeader("Content-Type", "text/html;charset=utf-8");
        
        resp.getWriter().write("我是小小调度员");
        
    }
}