Html 我应该如何在jsp页面中获取根文件夹路径
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/10327390/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
how should I get root folder path in jsp page
提问by Raje
I want to retrieve root path of webapplication, then I want to append link to root path. I tried request.context but it returns "http://localhost:8080/webapp/web-inf".
我想检索 webapplication 的根路径，然后我想将链接附加到根路径。我试过 request.context 但它返回“http://localhost:8080/webapp/web-inf”。
For example my root folder path is
例如我的根文件夹路径是
path = http://localhost:8080/webapp/
and I want to append remaining link to this path
我想将剩余的链接附加到此路径
helpPath= /help/page/help.htm
<a href="${path} + ${helpPath}" target="_blank">name</a>
Any help or pointer really appreciated.
任何帮助或指针真的很感激。
回答by
<%=request.getContextPath()%>
will give you the rootpath of your application so in your case it will be http://localhost:8080/webapp
将为您提供应用程序的根路径，因此在您的情况下它将是http://localhost:8080/webapp
As per comment:
根据评论：
<%=request.getContextPath()%>/help/page/help.htm
will give you your page
会给你你的页面
回答by Rakesh Juyal
You can use pageContext.request.contextPath
您可以使用 pageContext.request.contextPath
${pageContext.request.contextPath}
So you can use,
所以你可以使用，
<a href="${pageContext.request.contextPath}${helpPath}" target="_blank">name</a>
But the better way is to set the base href to this path and then use the path as it is.
但更好的方法是将 base href 设置为此路径，然后按原样使用该路径。
<head>
<base href="${pageContext.request.contextPath}">
</head>
<body>
<a href="${helpPath}" target="_blank">name</a>
</body>
回答by jahroy
I believe you can use the getRealPath()method of the ServletContext.
我相信你可以使用ServletContext的getRealPath()方法。
回答by user1357768
You can also use
你也可以使用
<c:url>
jstl tag. It will add the context path for you.
jstl 标签。它将为您添加上下文路径。
回答by tusar
<%=request.getContextPath()%>will give /webapp
<%=request.getContextPath()%>会给 /webapp
So your link should look like :
所以你的链接应该是这样的：
<a href="<%=request.getContextPath()%>${helpPath}" target="_blank">name</a>
