String requestUrl = request.getScheme() //當前鏈接使用的協(xié)議
    +"://" + request.getServerName()//服務(wù)器地址 
    + ":" + request.getServerPort() //端口號 
    + request.getContextPath() //應(yīng)用名稱，如果應(yīng)用名稱為
    + request.getServletPath() //請求的相對url 
    + "?" + request.getQueryString(); //請求參數(shù)

舉例：

http://127.0.0.1:8080/world/index.jsp?name=lilei&sex=1
<Context path="world" docBase="/home/webapps" debug="0" reloadable="true"/>

request.getScheme() = "http";
request.getServerName() = "127.0.0.1";
request.getServerPort() = "8080";
request.getContextPath() = "world";
request.getServletPath() = "index.jsp";
request.getQueryString() = "name=lilei&sex=1";

http://127.0.0.1:8080/world/index.jsp?name=lilei&sex=1
<Context path="" docBase="/home/webapps" debug="0" reloadable="true"/>

request.getScheme() = "http";
request.getServerName() = "127.0.0.1";
request.getServerPort() = "8080";
request.getContextPath() = "";
request.getServletPath() = "world/index.jsp";
request.getQueryString() = "name=lilei&sex=1";

二、獲取服務(wù)器根路徑

<% 
String path = request.getContextPath(); 
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 
%>

使用如下：

<head>
<link rel="stylesheet" type="text/css" href="<%=basePath%>static/css/framework/themes/default/easyui.css">
<link rel="stylesheet" type="text/css" href="<%=basePath%>static/css/framework/themes/icon.css">
<link rel="stylesheet" type="text/css" href="<%=basePath%>static/css/base.css">
<script src="<%=basePath%>static/javascript/framework/jquery.min.js"></script>
<script src="<%=basePath%>static/javascript/framework/jquery.easyui.min.js"></script>
<script src="<%=basePath%>static/javascript/framework/easyui-lang-zh_CN.js"></script>
<script src="<%=basePath%>static/javascript/framework/easyui-util.js"></script>
</head>

以上就是Java獲取此次請求URL以及服務(wù)器根路徑的方法，希望對大家的學(xué)習(xí)有所幫助。

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