Struts 修改Struts2的struts.xml配置文件位置

修改Struts2的struts.xml配置文件位置  

　　默认情况下 Struts 的配置文件名称为struts xml 且该文件放在src根目录下 如下图所示

　　如果需要修改struts xml的位置 例如把struts xml放到struts 文件夹下 结构如下图所示 该怎么办呢?

　　Struts 在web xml中的一般配置如下

　　[]

　　struts

　　 apache struts dispatcher ng filter StrutsPrepareAndExecuteFilter

　　struts

　　/*

　　struts

　　 apache struts dispatcher ng filter StrutsPrepareAndExecuteFilter

　　struts

　　/*

　　为了弄清Stuts 是如何加载配置文件的 先查看Struts 的StrutsPrepareAndExecuteFilter类

　　[java] package apache struts dispatcher ng filter;

　　/**

　　* Handles both the preparation and execution phases of the Struts dispatching process This filter is better to use

　　* when you don t have another filter that needs access to action context information such as Sitemesh

　　*/

　　public class StrutsPrepareAndExecuteFilter implements StrutsStatics Filter {

　　protected PrepareOperations prepare;

　　protected ExecuteOperations execute;

　　protected List excludedPatterns = null;

　　public void init(FilterConfig filterConfig) throws ServletException {

　　InitOperations init = new InitOperations();

　　try {

　　FilterHostConfig config = new FilterHostConfig(filterConfig);

　　init initLogging(config);

　　Dispatcher dispatcher = init initDispatcher(config);

　　init initStaticContentLoader(config dispatcher);

　　prepare = new PrepareOperations(filterConfig getServletContext() dispatcher);

　　execute = new ExecuteOperations(filterConfig getServletContext() dispatcher);

　　this excludedPatterns = init buildExcludedPatternsList(dispatcher);

　　postInit(dispatcher filterConfig);

　　} finally {

　　init cleanup();

　　}

　　}

　　/**

　　* Callback for post initialization

　　*/

　　protected void postInit(Dispatcher dispatcher FilterConfig filterConfig) {

　　}

　　public void doFilter(ServletRequest req ServletResponse res FilterChain chain) throws IOException ServletException {

　　HttpServletRequest request = (HttpServletRequest) req;

　　HttpServletResponse response = (HttpServletResponse) res;

　　try {

　　prepare setEncodingAndLocale(request response);

　　prepare createActionContext(request response);

　　prepare assignDispatcherToThread();

　　if ( excludedPatterns != null && prepare isUrlExcluded(request excludedPatterns)) {

　　chain doFilter(request response);

　　} else {

　　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);

　　}

　　}

　　public void destroy() {

　　prepare cleanupDispatcher();

　　}

　　}

　　package apache struts dispatcher ng filter;

　　/**

　　* Handles both the preparation and execution phases of the Struts dispatching process This filter is better to use

　　* when you don t have another filter that needs access to action context information such as Sitemesh

　　*/

　　public class StrutsPrepareAndExecuteFilter implements StrutsStatics Filter {

　　protected PrepareOperations prepare;

　　protected ExecuteOperations execute;

　　protected List excludedPatterns = null;

　　public void init(FilterConfig filterConfig) throws ServletException {

　　InitOperations init = new InitOperations();

　　try {

　　FilterHostConfig config = new FilterHostConfig(filterConfig);

　　init initLogging(config);

　　Dispatcher dispatcher = init initDispatcher(config);

　　init initStaticContentLoader(config dispatcher);

　　prepare = new PrepareOperations(filterConfig getServletContext() dispatcher);

　　execute = new ExecuteOperations(filterConfig getServletContext() dispatcher);

　　this excludedPatterns = init buildExcludedPatternsList(dispatcher);

　　postInit(dispatcher filterConfig);

　　} finally {

　　init cleanup();

　　}

　　}

　　/**

　　* Callback for post initialization

　　*/

　　protected void postInit(Dispatcher dispatcher FilterConfig filterConfig) {

　　}

　　public void doFilter(ServletRequest req ServletResponse res FilterChain chain) throws IOException ServletException {

　　HttpServletRequest request = (HttpServletRequest) req;

　　HttpServletResponse response = (HttpServletResponse) res;

　　try {

　　prepare setEncodingAndLocale(request response);

　　prepare createActionContext(request response);

　　prepare assignDispatcherToThread();

　　if ( excludedPatterns != null && prepare isUrlExcluded(request excludedPatterns)) {

　　chain doFilter(request response);

　　} else {

　　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);

　　}

　　}

　　public void destroy() {

　　prepare cleanupDispatcher();

　　}

　　}可以看到 有个public void init(FilterConfig filterConfig) throws ServletException { } 方法 很明显 这个方法在启动时会被调用 然后加载classes目录下的struts xml配置文件 配置文件参数名称为filterConfig 因此 我们可以指定Struts Filter 的参数 这和指定Servlet参数相同 配置即可 配置如下

　　[]

　　struts

　　 apache struts dispatcher ng filter StrutsPrepareAndExecuteFilter

　　filterConfig

　　classpath:struts /struts xml

　　struts

　　/*

　　struts

　　 apache struts dispatcher ng filter StrutsPrepareAndExecuteFilter

　　filterConfig

　　classpath:struts /struts xml

　　struts

　　/*