下面是struts2標簽的常用的用法
<s:url value="/images/copyright.jpg" />
<s:url action="list" namespace="/qxgl" />
一定要注意：url中includeParams的屬性的默認值是get，如果沒有在struts.xml指定新的值，那么使用url標簽引用的所有的靜態(tài)文件都會帶上通過get方法傳遞的參數(shù)值。
另外：includeParams的屬性值還有none、all
all,是把get和post中的參數(shù)加入到 url 參數(shù)中 ；
none是不把參數(shù)加入到url中；

例如：你在detail.jsp中寫入

<link href="<s:url value="/css/styleqxgl.css"/>" rel="stylesheet"
type="text/css">

在瀏覽器中輸入http://localhost/detail.jsp?id=5

<link href="/web應(yīng)用名稱/css/styleqxgl.css?id=5" rel="stylesheet"
type="text/css">
這樣瀏覽器就又下載了一次styleqxgl.css，如果你的系統(tǒng)放在公網(wǎng)上，那么帶寬的費用是很貴的，使用瀏覽器的緩存，可以有效的利用帶寬，節(jié)約成本。

解決這個問題的辦法有兩個，一個是<s:url value="/css/styleqxgl.css" includeParams="none"/>

另外一個就是在struts.xml中配置，參考下文：

Setting a default value for includeParams

The property struts.url.includeParams can be used to set the default value of the includeParams attribute.

See Constant Configuration for further information.

Parameters

Name

Required

Default

Evaluated

Type

Description

action	false		false	String	The action to generate the URL for, if not using value
anchor	false		false	String	The anchor for this URL
encode	false	true	false	Boolean	Whether to encode parameters
escapeAmp	false	true	false	Boolean	Specifies whether to escape ampersand (&) to (&amp or not
forceAddSchemeHostAndPort	false	false	false	Boolean	Specifies whether to force the addition of scheme, host and port or not
id	false		false	String	Deprecated. Use 'var' instead
includeContext	false	true	false	Boolean	Whether actual context should be included in URL
includeParams	false	get	false	String	The includeParams attribute may have the value 'none', 'get' or 'all'
method	false		false	String	The method of action to use
namespace	false		false	String	The namespace to use
portletMode	false		false	String	The resulting portlet mode
portletUrlType	false		false	String	Specifies if this should be a portlet render or action URL. Default is "render". To create an action URL, use "action".
scheme	false		false	String	Set scheme attribute
value	false		false	String	The target value to use, if not using action
var	false		false	String	Name used to reference the value pushed into the Value Stack
windowState	false		false	String	The resulting portlet window state

struts2標簽之url標簽