java的各种跳转总结

最新推荐文章于 2024-11-01 07:08:24 发布

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最新推荐文章于 2024-11-01 07:08:24 发布

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java的各种跳转总结，见下面代码及注释（最后一种实现保存cookie的重定向）

package com.jhk.site.web;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
/**
 * 测试
 * 
 * @author sun_guodong
 * @date 2018年9月5日
 */
@Controller
public class Test {

	/**
	 * 重定向
	 * 
	 * @param request
	 * @param respond
	 * @return
	 */
	@RequestMapping("/test1")
	public String test1(HttpServletRequest request, HttpServletResponse respond) {

		return "redirect:http://www.baidu.com";

	}

	/**
	 * 请求转发到 /test2/test
	 * 
	 * @param request
	 * @param respond
	 * @return
	 */
	@RequestMapping("/test2")
	public String test2(HttpServletRequest request, HttpServletResponse respond) {

		return "forward:/test";

	}

	/**
	 * 等同于第一种情况
	 * 
	 * @param request
	 * @param respond
	 * @throws IOException
	 */
	@RequestMapping("/test3")
	public void test3(HttpServletRequest request, HttpServletResponse respond) throws IOException {

		respond.getWriter().print("redirect:http://www.baidu.com");

	}

	/**
	 * 等同于第一种情况
	 * 
	 * @param request
	 * @param respond
	 * @throws IOException
	 */
	@RequestMapping("/test4")
	public void test4(HttpServletRequest request, HttpServletResponse respond) throws IOException {

		respond.sendRedirect("http://www.baidu.com");

	}

	/**
	 * 请求转发
	 * 
	 * @param request
	 * @param respond
	 * @throws IOException
	 * @throws ServletException
	 */
	@RequestMapping("/test5")
	public void test5(HttpServletRequest request, HttpServletResponse respond) throws IOException, ServletException {

		request.getRequestDispatcher("/success.html").forward(request, respond);

	}

	/**
	 * 重定向保存cookie的方法
	 * 
	 * @param request
	 * @param respond
	 * @throws IOException
	 * @throws ServletException
	 */
	@RequestMapping("/test6")
	public void test6(HttpServletRequest request, HttpServletResponse respond) throws IOException, ServletException {
		request.setAttribute("authUserId", "");
		Cookie cookie = new Cookie("", "");
		cookie.setMaxAge(2);
		cookie.setPath("/");
		cookie.setDomain("bigbigwork.com");
		respond.addCookie(cookie);

		String html = "<script type='text/javascript'>location.href='http://www.baidu.com';</script>";
		respond.getWriter().print(html);

	}

}