Struts 2 Tile and REST Plugin

Question

I am trying to start a Struts2 project with Tiles and REST Plugin, but I just can't get it to work.

I looked through the documentation for both, and I think I'm doing it right. here are my files:

web.xml

<?xml version="1.0" encoding="UTF-8"?> <web-app metadata-complete="true" version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <!-- listeners --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <listener> <listener-class>org.apache.struts2.tiles.StrutsTilesListener</listener-class> </listener> <!-- context params --> <context-param> <param-name>org.apache.tiles.impl.BasicTilesContainer.DEFINITIONS_CONFIG</param-name> <param-value>/WEB-INF/tiles-tradesman.xml</param-value> </context-param> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath*:spring-tradesman.xml</param-value> </context-param> <!-- filters --> <filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class> </filter> <!-- filter mappings --> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app> 

struts.xml

 <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <constant name="struts.devMode" value="true" /> <!-- RESTful plugin setup --> <constant name="struts.mapper.class" value="rest" /> <constant name="struts.convention.action.suffix" value="Controller"/> <constant name="struts.convention.action.mapAllMatches" value="true"/> <constant name="struts.convention.default.parent.package" value="rest-default"/> <constant name="struts.convention.package.locators" value="tp"/> <package name="tradesman" namespace="/beta/tradesman" extends="default"> <result-types> <result-type name="json" class="org.apache.struts2.json.JSONResult"/> <result-type name="tiles" class="org.apache.struts2.views.tiles.TilesResult" /> </result-types> <interceptors> <interceptor name="json" class="org.apache.struts2.json.JSONInterceptor"/> </interceptors> </package> </struts> 

JobAlertsController.java

 package uk.co.ratedpeople.tp; import com.opensymphony.xwork2.ActionSupport; import java.util.logging.Logger; import org.apache.struts2.convention.annotation.Action; import org.apache.struts2.convention.annotation.Result; public class JobAlertsController extends ActionSupport { private static final Logger LOGGER = Logger.getLogger(JobAlertsController.class.getName()); @Action(results={ @Result(name = SUCCESS, location = "tradesman.page.jobalerts", type = "tiles") }) public String index() { LOGGER.info("executing index action..."); LOGGER.info("leaving index action..."); return SUCCESS; } } 

When I try to start a project, I get this error:

 SEVERE: Exception starting filter struts2 Unable to load configuration. - [unknown location] at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:437) at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:195) at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:273) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:254) at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:372) at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:98) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4542) at org.apache.catalina.core.StandardContext$2.call(StandardContext.java:5220) at org.apache.catalina.core.StandardContext$2.call(StandardContext.java:5215) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) Caused by: Unable to load configuration. - [unknown location] at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:69) at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:380) at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:424) ... 13 more Caused by: The Result type [tiles] which is defined in the Result annotation on the class [class uk.co.ratedpeople.tp.JobAlertsController] or determined by the file extension or is the default result type for the PackageConfig of the action, could not be found as a result-type defined for the Struts/XWork package [uk.co.ratedpeople.tp#rest-default#] - [unknown location] at org.apache.struts2.convention.DefaultResultMapBuilder.createResultConfig(DefaultResultMapBuilder.java:427) at org.apache.struts2.convention.DefaultResultMapBuilder.createFromAnnotations(DefaultResultMapBuilder.java:399) at org.apache.struts2.convention.DefaultResultMapBuilder.build(DefaultResultMapBuilder.java:200) at org.apache.struts2.convention.PackageBasedActionConfigBuilder.createActionConfig(PackageBasedActionConfigBuilder.java:864) at org.apache.struts2.convention.PackageBasedActionConfigBuilder.buildConfiguration(PackageBasedActionConfigBuilder.java:650) at org.apache.struts2.convention.PackageBasedActionConfigBuilder.buildActionConfigs(PackageBasedActionConfigBuilder.java:335) at org.apache.struts2.convention.ClasspathPackageProvider.loadPackages(ClasspathPackageProvider.java:53) at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:215) at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:66) ... 15 more 27-Jul-2011 17:07:07 org.apache.catalina.core.ApplicationContext log INFO: Closing Spring root WebApplicationContext 

I'm sure I’m doing something really stupid, but I don’t see it myself. Is anyone

Answer 1

First, I would suggest putting your actions in a package, simply called struts, I had much less configuration problems using the standard architecture of conditional plugins. Move your actions to a package, for example:

uk.co.ratedpeople.struts

instead

uk.co.ratedpeople.tp;

The fewer the settings, the better. It also eliminates the need for this:

 <constant name="struts.convention.package.locators" value="tp"/> 

Secondly, part of your problem is related to your xml configuration:

 <struts> <constant name="struts.devMode" value="true" /> <!-- RESTful plugin setup --> <constant name="struts.mapper.class" value="rest" /> <constant name="struts.convention.action.suffix" value="Controller"/> <constant name="struts.convention.action.mapAllMatches" value="true"/> <constant name="struts.convention.default.parent.package" value="rest-default"/> <constant name="struts.convention.package.locators" value="tp"/> <package name="tradesman" namespace="/beta/tradesman" extends="default"> <result-types> <result-type name="json" class="org.apache.struts2.json.JSONResult"/> <result-type name="tiles" class="org.apache.struts2.views.tiles.TilesResult" /> </result-types> <interceptors> <interceptor name="json" class="org.apache.struts2.json.JSONInterceptor"/> </interceptors> </package> 

Try something like this (assuming you rescheduled your actions as suggested earlier):

 <struts> <constant name="struts.devMode" value="true" /> <!-- RESTful plugin setup --> <constant name="struts.mapper.class" value="rest" /> <constant name="struts.convention.action.suffix" value="Controller"/> <constant name="struts.convention.action.mapAllMatches" value="true"/> <constant name="struts.convention.default.parent.package" value="tradesman"/> <package name="tradesman" namespace="/beta/tradesman" extends="rest-default"> <result-types> <result-type name="json" class="org.apache.struts2.json.JSONResult"/> <result-type name="tiles" class="org.apache.struts2.views.tiles.TilesResult" /> </result-types> </package> </struts> 

Note the constant name = "struts.convention.default.parent.package" value = "tradesman", which refers to the package below it that defines your result types and extends rest-default. This should eliminate the errors in determining the result of the tile.

I also ran into problems using the struts filter that you have in your web.xml, I would change from:

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

in

 <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>