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<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>

<url-pattern>/**//*</url-pattern>
<dispatcher>REQUEST</dispatcher>
<dispatcher>FORWARD</dispatcher>
</filter-mapping>
url-pattern 鏄?/* 鐨勫叏鑼冨洿鏄犲皠錛屽綋鐒朵篃鍖呮嫭浜?html 鍚庣紑鏂囦歡銆傝繖縐嶆儏鍐典笅錛岄」鐩腑浠諱綍涓涓姹傦紝浼?xì)缁彉q?嬈ilter錛岄鍏堟槸SetCharacterFilter銆佺劧鍚庢槸 UrlRewriterFilter銆佹渶鍚庢槸 FilterDispatcher錛屼箣鍓嶅凡緇忔帓闄や簡 UrlRewriterFilter 鐨勯棶棰樸備簬鏄慨鏀?FilterDispatcher 鐨?url-pattern 涓?*.do錛屽嵆鍙繃婊?*.do 鐨勮姹傦紝鍏朵粬璇鋒眰姣斿 *.html錛屽垯涓嶄細(xì)緇忚繃榪欎釜 filter銆?nbsp;
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褰?url-pattern 涓?/* 鏃訛紝鎵鏈夎姹傚寘鎷闈欐佽祫婧愭枃浠剁殑璇鋒眰錛岄兘浼?xì)鏈塅ilterDispatcher鏉ユ帴綆℃淳鍙戙傚鏋滆姹傜被鍨嬩負(fù)闈欐佽祫婧愶紝鍒?FilterDispatcher 涓嶄細(xì)璋冪敤 action 澶勭悊妯″潡鏉ユ帴鏀惰繖涓姹傦紝鑰屾槸綆鍗曠殑鍥為侀潤鎬佽祫婧愩傚湪榪欎釜鍥為佽繃紼嬩腑錛孎ilterDispatcher 鍋氱殑宸ヤ綔濡備笅錛?br />
FilterDispatcher.java

protected void findStaticResource(String name, HttpServletRequest request, HttpServletResponse response) throws IOException
{

if (!name.endsWith(".class"))
{

for (String pathPrefix : pathPrefixes)
{
InputStream is = findInputStream(name, pathPrefix);

if (is != null)
{
Calendar cal = Calendar.getInstance();
// check for if-modified-since, prior to any other headers
long ifModifiedSince = 0;

try
{
ifModifiedSince = request.getDateHeader("If-Modified-Since");

} catch (Exception e)
{
LOG.warn("Invalid If-Modified-Since header value: '" + request.getHeader("If-Modified-Since") + "', ignoring");
}
long lastModifiedMillis = lastModifiedCal.getTimeInMillis();
long now = cal.getTimeInMillis();
cal.add(Calendar.DAY_OF_MONTH, 1);
long expires = cal.getTimeInMillis();

if (ifModifiedSince > 0 && ifModifiedSince <= lastModifiedMillis)
{
// not modified, content is not sent - only basic headers and status SC_NOT_MODIFIED
response.setDateHeader("Expires", expires);
response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
is.close();
return;
}
// set the content-type header
String contentType = getContentType(name);

if (contentType != null)
{
response.setContentType(contentType);
}


if (serveStaticBrowserCache)
{
// set heading information for caching static content
response.setDateHeader("Date", now);
response.setDateHeader("Expires", expires);
response.setDateHeader("Retry-After", expires);
response.setHeader("Cache-Control", "public");
response.setDateHeader("Last-Modified", lastModifiedMillis);

} else
{
response.setHeader("Cache-Control", "no-cache");
response.setHeader("Pragma", "no-cache");
response.setHeader("Expires", "-1");
}


try
{
copy(is, response.getOutputStream());

} finally
{
is.close();
}
return;
}
}
}

response.sendError(HttpServletResponse.SC_NOT_FOUND);
}

// 
..


protected InputStream findInputStream(String name, String packagePrefix) throws IOException
{
String resourcePath;

if (packagePrefix.endsWith("/") && name.startsWith("/"))
{
resourcePath = packagePrefix + name.substring(1);

} else
{
resourcePath = packagePrefix + name;
}

resourcePath = URLDecoder.decode(resourcePath, encoding);

return ClassLoaderUtil.getResourceAsStream(resourcePath, getClass());
}
鍙互鐪嬪埌錛岀敱 ClassLoaderUtil.getResourceAsStream 杞藉叆闈欐佽祫婧愶紝鐒跺悗鍥為併侰lassLoaderUtil 榪樻槸鐢ㄤ簡 xwork 鐨?lib錛宻truts2騫舵病鏈夐噸鍐欒繖涓被銆傝繖涓洖閫佽繃紼嬩腑錛孎ilterDispatcher 騫舵病鏈夋寚瀹氬洖閫佸瓧絎﹂泦錛屽洜姝よ緭鍑洪〉闈細(xì)閲囩敤鏈嶅姟鍣ㄩ粯璁ゅ瓧絎﹂泦錛屽綋鐒惰窡鍏蜂綋鎿嶄綔緋葷粺涔熸湁鍏崇郴銆傜洰鍓嶈繕娌$湅鍒版湁榛樿浠TF-8浣滀負(fù)鏈嶅姟鍣ㄥ瓧絎﹂泦鐨勩?

]]>
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