原文地址：http://www.jb51.net/article/71693.htm
本文介绍了Java获取此次请求URL以及获取服务器根路径的方法，并且进行举例说明，感兴趣的朋友可以学习借鉴下文的内容。
一、 获取此次请求的URL
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String requestUrl = request.getScheme()
//当前链接使用的协议
+
"://"
+ request.getServerName()//服务器地址
+
":"
+ request.getServerPort()
//端口号
+ request.getContextPath()
//应用名称，如果应用名称为
+ request.getServletPath()
//请求的相对url
+
"?"
+ request.getQueryString();
//请求参数
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举例：
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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"
;
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二、获取服务器根路径
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<%
String path = request.getContextPath();
String basePath = request.getScheme()+
"://"
+request.getServerName()+
":"
+request.getServerPort()+path+
"/"
;
%>
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使用如下：
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<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>
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以上就是Java获取此次请求URL以及服务器根路径的方法，希望对大家的学习有所帮助。