重转向保留跳转过来的Referer,路径不会变
1 request.getRequestDispatcher("/eventweb/index.sp?loginId=" + loginId).forward(request, response);
重定向的 第一种方式
PrintWriter out = response.getWriter(); out.println("<html>"); out.println("<script>"); out.println("window.open ('" + request.getContextPath() + "/eventweb/declare.sp?loginId=" + loginId + "','_top')"); out.println("</script>"); out.println("</html>")
重定向的 第二种方式,跳转时以post方式提交(如果get会展示携带的参数,不安全)
1 RedirectWithPost redirectWithPost = new RedirectWithPost(response); 2 String redirectUrl = request.getContextPath() + "/eventweb/declare.sp"; 3 redirectWithPost.setParameter("loginId", loginId); 4 redirectWithPost.sendByPost(redirectUrl);
/** * 用POST方式 重定向 * * @author royFly */ public class RedirectWithPost { Map<String, String> parameter = new HashMap<String, String>(); HttpServletResponse response; public RedirectWithPost(HttpServletResponse response) { this.response = response; } public void setParameter(String key, String value) { this.parameter.put(key, value); } public void sendByPost(String url) throws IOException { this.response.setContentType("text/html"); PrintWriter out = this.response.getWriter(); out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">"); out.println("<HTML>"); out.println(" <HEAD>"); out.println(" <meta http-equiv=Content-Type content=\"text/html; charset=utf-8\">"); out.println(" <TITLE>loading</TITLE>"); out.println(" <meta http-equiv=\"Content-Type\" content=\"text/html charset=GBK\">\n"); out.println(" </HEAD>"); out.println(" <BODY>"); out.println("<form name=\"submitForm\" action=\"" + url + "\" method=\"post\">"); Iterator<String> it = this.parameter.keySet().iterator(); while (it.hasNext()) { String key = it.next(); out.println("<input type=\"hidden\" name=\"" + key + "\" value=\"" + this.parameter.get(key) + "\"/>"); } out.println("</from>"); out.println("<script>window.document.submitForm.submit();</script> "); out.println(" </BODY>"); out.println("</HTML>"); out.flush(); out.close(); } }
重定向的 第三种方式
sendRedirect(request, response, url, true);
转载于:https://www.cnblogs.com/MSNS-MTT/p/11057819.html