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  • getRequestURI,getRequestURL的区别

    getRequestURI,getRequestURL的区别

    test1.jsp=======================

    <a href ="test.jsp?p=fuck">跳转到test2</a>

    test2.jsp=======================

    <%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>
    <%
    String path = request.getContextPath();
    String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

    out.println("basePath:"+basePath);
    out.println("<br/>");
    out.println("getContextPath:"+request.getContextPath());
    out.println("<br/>");
    out.println("getServletPath:"+request.getServletPath());
    out.println("<br/>");
    out.println("getRequestURI:"+request.getRequestURI());
    out.println("<br/>");
    out.println("getRequestURL:"+request.getRequestURL());
    out.println("<br/>");
    out.println("getRealPath:"+request.getRealPath("/"));
    out.println("<br/>");
    out.println("getServletContext().getRealPath:"+getServletContext().getRealPath("/"));
    out.println("<br/>");
    out.println("getQueryString:"+request.getQueryString());

    %>

    显示结果:

    basePath:http://localhost:8080/test/

    getContextPath:/test 
    getServletPath:/test.jsp 
    getRequestURI:/test/test.jsp 
    getRequestURL:http://localhost:8080/test/test.jsp 
    getRealPath:D:\Tomcat 6.0\webapps\test\ 
    getServletContext().getRealPath:D:\Tomcat 6.0\webapps\test\ 
    getQueryString:p=fuck

    在一些应用中,未登录用户请求了必须登录的资源时,提示用户登录,此时要记住用户访问的当前页面的URL,当他登录成功后根据记住的URL跳回用户最后访问的页面:

    String lastAccessUrl = request.getRequestURL() + "?" + request.getQueryString();

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  • 原文地址:https://www.cnblogs.com/lbangel/p/3049377.html
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