Modify the Struts.xml profile location for Struts2

Source: Internet
Author: User

By default, the profile name of Struts2 is called Struts.xml, and the file is placed under the SRC root directory. As shown in the following:

If you need to modify the location of the struts.xml, for example, put Struts.xml in the Struts2 folder, as shown in the structure, what should I do?

The general configuration of Struts2 in Web. XML is as follows:

    <!--configuration Struts2 filter: Strutsprepareandexecutefilter--    <filter>        <filter-name>struts2</ Filter-name>        <filter-class> </filter-class>    </filter>    <filter-mapping>        <filter-name>struts2</ filter-name>        <url-pattern>/*</url-pattern>    </filter-mapping>

To find out how STUTS2 loads the configuration file, first look at the Struts2 Strutsprepareandexecutefilter class:

Package;/** * Handles Both the preparation and execution phases of the Struts disp  Atching process.  This filter was better to the use * if you don't have another filter, the needs access to action context information, such as Sitemesh.    */public class Strutsprepareandexecutefilter implements Strutsstatics, Filter {protected prepareoperations prepare;    Protected Executeoperations execute;protected list<pattern> 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 Ioexcepti        On, 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 (); }}

As you can see, there is a public void init (Filterconfig filterconfig) throws Servletexception {...} method, and it is clear that this method will be called at startup, and then Load the Struts.xml configuration file under the classes directory . The configuration file parameter name is Filterconfig. Therefore, we can specify the parameters of the Struts2 Filter, which is the same as specifying the servlet parameter, and is configured <init-param>. The configuration is as follows:

    <filter>        <filter-name>struts2</filter-name>        <filter-class></filter-class>        <init-param >            <param-name>filterConfig</param-name>            <param-value>classpath:struts2/struts.xml </param-value>        </init-param>    </filter>    <filter-mapping>        < filter-name>struts2</filter-name>        <url-pattern>/*</url-pattern>    </ Filter-mapping>

With this configuration, the specified struts profile can be loaded normally.


Modify the Struts.xml profile location for Struts2

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