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struts2 no extension
使用struts2 的小伙伴很多都想修改或者去掉action的扩展名,本文帮你实现
struts2-core-2.3.16.jar , 下载地址: http://repo1.maven.org/maven2/org/apache/struts/struts2-core/2.3.16/
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter , 这个struts2处理请求的函数doFilter , 在这里使用了 prepare.isUrlExcluded来判断是否排除的请求,如果是就直接执行chain.doFilter(request, response);交给其他的Filter处理,否则自己处理此action
//... // protected PrepareOperations prepare; public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException { HttpServletRequest request = (HttpServletRequest) req; HttpServletResponse response = (HttpServletResponse) res; try { if (excludedPatterns != null && prepare.isUrlExcluded(request, excludedPatterns)) { //看这里 chain.doFilter(request, response); } else { prepare.setEncodingAndLocale(request, response); prepare.createActionContext(request, response); prepare.assignDispatcherToThread(); request = prepare.wrapRequest(request); ActionMapping mapping = prepare.findActionMapping(request, response, true); if (mapping == null) { boolean handled = execute.executeStaticResourceRequest(request, response); if (!handled) { chain.doFilter(request, response); } } else { execute.executeAction(request, response, mapping); } } } finally { prepare.cleanupRequest(request); } } //...
org.apache.struts2.dispatcher.ng.PrepareOperations
/** * Check whether the request matches a list of exclude patterns. * * @param request The request to check patterns against * @param excludedPatterns list of patterns for exclusion * * @return <tt>true</tt> if the request URI matches one of the given patterns */ public boolean isUrlExcluded( HttpServletRequest request, List<Pattern> excludedPatterns ) { if (excludedPatterns != null) { String uri = RequestUtils.getUri(request); for ( Pattern pattern : excludedPatterns ) { if (pattern.matcher(uri).matches()) { return true; } } } return false; }经过以上的分析,现在在看看struts2的默认配置文件default.properties,在struts2-core-2.3.16.jar, org.apache.truts2下面
### Used by the DefaultActionMapper ### You may provide a comma separated list, e.g. struts.action.extension=action,jnlp,do ### The blank extension allows you to match directory listings as well as pure action names ### without interfering with static resources, which can be specified as an empty string ### prior to a comma e.g. struts.action.extension=, or struts.action.extension=x,y,z,, struts.action.extension=action,,根据描述,可以设置struts.action.extension的value为一个逗号就可以支持无扩展名的action了,如果想兼容之前的,可以添加上之间的,如:
<pre name="code" class="plain">struts.action.extension=<span style="font-family: Arial, Helvetica, sans-serif;">do,action,jspt,, </span>另外,如果你使用的struts2的版本低于2.3.16(至于具体那个版本是过度的,我没有测试),静态资源js,css可能会被吃掉了,可以添加如下的一个属性
struts.action.excludePattern=/css,/javascript有的项目中处理js和css的方式是对js、css进行压缩的servlet,如:
<link type="text/css" rel="stylesheet" href=http://www.mamicode.com/"/compressor?v=${globalVersion}&type=css&munge=true&files=/cssStyle/index.css,/cssStyle/dialog.css,/cssStyle/jbox/Gray/jbox.css,/cssStyle/home.css">>
即使用servlet compressor 输出js和css文件,此时配置应如下struts.action.excludePattern=/compressor注意:在设置struts2的配置时,最好使用struts.properties,因为我在struts.xml中使用相同的配置,就不兼容以前的".do"了,如果struts.properties和struts.xml同时存在,struts.properties的优先级会高于struts.xml
struts2 no extension
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