I'm migrating a webapp from JBoss to Embedded Tomcat. It works on intellij but when I run the war file with java -jar myapplication.war it shows the following error. After googling I couldn't find any solution. This problem seems like I have two struts2-core jars or some dependencies conflicting but I have just one jar.
Sample project here.
Error:
2017-12-11 10:58:24.527 ERROR 10296 --- [nio-8080-exec-1] o.apache.struts2.dispatcher.Dispatcher : Dispatcher initialization failed
com.opensymphony.xwork2.config.ConfigurationException: Unable to load configuration.
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:70) ~[xwork-core-2.3.34.jar!/:2.3.34]
at org.apache.struts2.dispatcher.Dispatcher.getContainer(Dispatcher.java:978) ~[struts2-core-2.3.34.jar!/:2.3.34]
at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:446) ~[struts2-core-2.3.34.jar!/:2.3.34]
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:490) ~[struts2-core-2.3.34.jar!/:2.3.34]
at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:74) [struts2-core-2.3.34.jar!/:2.3.34]
at org.apache.struts2.dispatcher.ng.servlet.StrutsServlet.init(StrutsServlet.java:54) [struts2-core-2.3.34.jar!/:2.3.34]
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1183) [tomcat-embed-core-8.5.14.jar!/:8.5.14]
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:795) [tomcat-embed-core-8.5.14.jar!/:8.5.14]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:133) [tomcat-embed-core-8.5.14.jar!/:8.5.14]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-8.5.14.jar!/:8.5.14]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478) [tomcat-embed-core-8.5.14.jar!/:8.5.14]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [tomcat-embed-core-8.5.14.jar!/:8.5.14]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80) [tomcat-embed-core-8.5.14.jar!/:8.5.14]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.14.jar!/:8.5.14]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) [tomcat-embed-core-8.5.14.jar!/:8.5.14]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799) [tomcat-embed-core-8.5.14.jar!/:8.5.14]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.14.jar!/:8.5.14]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) [tomcat-embed-core-8.5.14.jar!/:8.5.14]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455) [tomcat-embed-core-8.5.14.jar!/:8.5.14]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.14.jar!/:8.5.14]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_131]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_131]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.14.jar!/:8.5.14]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131]
Caused by: com.opensymphony.xwork2.config.ConfigurationException: Unable to load bean: type: class:com.opensymphony.xwork2.ObjectFactory
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:247) ~[xwork-core-2.3.34.jar!/:2.3.34]
at org.apache.struts2.config.StrutsXmlConfigurationProvider.register(StrutsXmlConfigurationProvider.java:102) ~[struts2-core-2.3.34.jar!/:2.3.34]
at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:240) ~[xwork-core-2.3.34.jar!/:2.3.34]
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:67) ~[xwork-core-2.3.34.jar!/:2.3.34]
... 23 common frames omitted
Caused by: com.opensymphony.xwork2.config.ConfigurationException: Bean type class com.opensymphony.xwork2.ObjectFactory with the name struts has already been loaded by bean - jar:file:/C:/workspaces/workspace/pessoal/spring-boot-struts2/target/spring-boot-struts2-0.0.1-SNAPSHOT.war!/WEB-INF/lib/struts2-core-2.3.34.jar!/struts-default.xml:65:72
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:231) ~[xwork-core-2.3.34.jar!/:2.3.34]
... 26 common frames omitted
My relevant stuffs:
StrutsServlet:
@WebServlet(urlPatterns = { "*.do" })
public class SBSStrutsServlet extends StrutsServlet {
private static final long serialVersionUID = 4919365268043339311L;
}
Application.java:
@SpringBootApplication
@ServletComponentScan
public class Application extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
struts.xml:
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
<constant name="struts.objectFactory" value="spring"/>
<package name="sbs" namespace="/sbs" extends="struts-default">
<action name="welcome" class="com.gbarbosa.sbs.controller.HelloWorldAction">
<result name="success">welcome.jsp</result>
</action>
</package>
</struts>
WEB-INF\lib:
asm-3.3.jar
asm-commons-3.3.jar
asm-tree-3.3.jar
classmate-1.3.3.jar
commons-fileupload-1.3.2.jar
commons-io-2.2.jar
commons-lang3-3.2.jar
ecj-4.5.1.jar
freemarker-2.3.26-incubating.jar
hibernate-validator-5.3.5.Final.jar
jackson-annotations-2.8.0.jar
jackson-core-2.8.8.jar
jackson-databind-2.8.8.jar
javassist-3.11.0.GA.jar
jboss-logging-3.3.1.Final.jar
jcl-over-slf4j-1.7.25.jar
jstl-1.2.jar
jul-to-slf4j-1.7.25.jar
log4j-api-2.7.jar
log4j-core-2.8.2.jar
log4j-over-slf4j-1.7.25.jar
logback-classic-1.1.11.jar
logback-core-1.1.11.jar
ognl-3.0.21.jar
slf4j-api-1.7.25.jar
snakeyaml-1.17.jar
spring-aop-4.3.8.RELEASE.jar
spring-beans-4.3.8.RELEASE.jar
spring-boot-1.5.3.RELEASE.jar
spring-boot-autoconfigure-1.5.3.RELEASE.jar
spring-boot-starter-1.5.3.RELEASE.jar
spring-boot-starter-logging-1.5.3.RELEASE.jar
spring-boot-starter-web-1.5.3.RELEASE.jar
spring-context-4.3.8.RELEASE.jar
spring-core-4.3.8.RELEASE.jar
spring-expression-4.3.8.RELEASE.jar
spring-web-4.3.8.RELEASE.jar
spring-webmvc-4.3.8.RELEASE.jar
struts2-core-2.3.34.jar
struts2-spring-plugin-2.3.34.jar
tomcat-embed-core-8.5.14.jar
tomcat-embed-el-8.5.14.jar
tomcat-embed-jasper-8.5.9.jar
validation-api-1.1.0.Final.jar
xwork-core-2.3.34.jar
WAR structure final:
META-INF
org
sbs
WEB-INF
I'm really stuck on this and on IntelliJ It works fine. I have no idea why Struts has already created a bean called struts and of type com.opensymphony.xwork2.ObjectFactory.
Please, someone has any idea?
I have found the solution.
Although of It looks like a duplicate jar issue It is not. The problem there is: tomcat container is providing two different paths to the same file. Different prefix paths jar:file:/ and jar:war:file:/.
Bean type class com.opensymphony.xwork2.ObjectFactory with the name spring has already been loaded by bean - jar:file:/C:/target/spring-boot-struts2-0.0.1-SNAPSHOT.war!/WEB-INF/lib/struts2-spring-plugin-2.3.34.jar!/struts-plugin.xml:29:132 - bean - jar:war:file:/C:/target/spring-boot-struts2-0.0.1-SNAPSHOT.war*/WEB-INF/lib/struts2-spring-plugin-2.3.34.jar!/struts-plugin.xml:29:132
To solve that I just changed the struts2-core and struts2-spring-plugin scope from compile to provided. The spring-boot-maven-plugin put these files under WEB-INF/lib-provided then when I run with java -jar myapplication.war these jars are provided in runtime.