Servlet实现重定向的两种方式

Posted 2020-07-31

使用Servlet实现请求重定向：两种方式

1.

response.setStatus(302);
response.setHeader("location", "/ResponseDemo/ResponseDemo13");

2.

response.sendRedirect("/ResponseDemo/ResponseDemo13");

 

被访问的代码：

package chensi.com;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet 使用response实现重定向
 */
@WebServlet("/ResponseDemo12")
public class ResponseDemo12 extends HttpServlet {
    private static final long serialVersionUID = 1L;
       
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        response.getWriter().write("这个是最开始访问的页面");
        /*response.setStatus(302);
        response.setHeader("location", "/ResponseDemo/ResponseDemo13");*/
        response.sendRedirect("/ResponseDemo/ResponseDemo13");
    
    }

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

}

 

 

被重定向的Servlet的代码：

package chensi.com;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet 使用response实现重定向
 */
@WebServlet("/ResponseDemo12")
public class ResponseDemo12 extends HttpServlet {
    private static final long serialVersionUID = 1L;
       
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        response.getWriter().write("这个是最开始访问的页面");
        /*response.setStatus(302);
        response.setHeader("location", "/ResponseDemo/ResponseDemo13");*/
        response.sendRedirect("/ResponseDemo/ResponseDemo13");
    
    }

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

}