How does one mark local artifacts for deployment in STS?

**kern3020** · Jul 10th, 2012, 09:15 AM

Hello

In this end, this is just a classpath problem. The rub is I'm debugging my webapp on the server via Spring source's eclipse based IDE.
The first call to the web services fails because
java.lang.ClassNotFoundException: org.john.app.domain.AccreditedPostsecondaryInstitu tion
See full backtrace below.

I have a project which I want to use as a jar in support of a web app project. The offending class is in this jar. Both projects are based on maven.
'mvn install' is invoked to install the jar into the local repository. I believe this worked because I see it in
~/.m2/repository/org/john/reaper/1.0-SNAPSHOT/reaper-1.0-SNAPSHOT.jar

Using Spring Source's Eclipse based IDE ( STS 2.9.2 - http://www.springsource.org/sts ), I added

Code:

		<dependency>
			<groupId>org.john</groupId>
			<artifactId>reaper</artifactId>
			<version>1.0-SNAPSHOT</version>
		</dependency>

and

Code:

          <repository>
                <id>JK local</id>
                <name>john's repo</name>
                <url>file:///home/jkern/.m2/repository</url>
            </repository>

to pom.xml. I believe this worked because the project builds within eclipse and it shows up in maven's list of dependencies.

Code:

$ mvn dependency:tree
	[INFO] Scanning for projects...
	[INFO] Searching repository for plugin with prefix: 'dependency'.
	[INFO] ------------------------------------------------------------------------
	[INFO] Building BuscandoColetivo
	[INFO]    task-segment: [dependency:tree]
	[INFO] ------------------------------------java------------------------------------
	[INFO] [dependency:tree {execution: default-cli}]
	[INFO] org.john:buscando:war:1.0.0-BUILD-SNAPSHOT
	[INFO] +- org.springframework:spring-context:jar:3.1.1.RELEASE:compile
	[INFO] |  +- org.springframework:spring-aop:jar:3.1.1.RELEASE:compile
	[INFO] |  +- org.springframework:spring-beans:jar:3.1.1.RELEASE:compile
	[INFO] |  +- org.springframework:spring-core:jar:3.1.1.RELEASE:compile
	[INFO] |  +- org.springframework:spring-expression:jar:3.1.1.RELEASE:compile
	[INFO] |  \- org.springframework:spring-asm:jar:3.1.1.RELEASE:compile
	[INFO] +- org.springframework:spring-webmvc:jar:3.1.1.RELEASE:compile
	[INFO] |  +- org.springframework:spring-context-support:jar:3.1.1.RELEASE:compile
	[INFO] |  \- org.springframework:spring-web:jar:3.1.1.RELEASE:compile
	[INFO] +- org.aspectj:aspectjrt:jar:1.6.9:compile
	[INFO] +- org.slf4j:slf4j-api:jar:1.5.10:compile
	[INFO] +- org.slf4j:jcl-over-slf4j:jar:1.5.10:runtime (scope not updated to compile)
	[INFO] +- org.slf4j:slf4j-log4j12:jar:1.5.10:runtime (scope not updated to compile)
	[INFO] +- log4j:log4j:jar:1.2.15:runtime (scope not updated to compile)
	[INFO] +- javax.inject:javax.inject:jar:1:compile
	[INFO] +- javax.servlet:servlet-api:jar:2.5:provided (scope not updated to compile)
	[INFO] +- javax.servlet.jsp:jsp-api:jar:2.1:provided
	[INFO] +- javax.servlet:jstl:jar:1.2:compile
	[INFO] +- junit:junit:jar:4.7:test
	[INFO] +- org.mongodb:mongo-java-driver:jar:2.7.1:compile
	[INFO] +- org.springframework.data:spring-data-mongodb:jar:1.0.2.RELEASE:compile
	[INFO] |  +- org.springframework:spring-tx:jar:3.1.1.RELEASE:compile
	[INFO] |  \- org.springframework.data:spring-data-commons-core:jar:1.2.1.RELEASE:compile
	[INFO] +- org.springframework:spring-dao:jar:2.0.8:compile
	[INFO] |  +- aopalliance:aopalliance:jar:1.0:compile
	[INFO] |  \- commons-logging:commons-logging:jar:1.1:compile
	[INFO] |     +- logkit:logkit:jar:1.0.1:compile
	[INFO] |     \- avalon-framework:avalon-framework:jar:4.1.3:compile
	[INFO] +- org.codehaus.jackson:jackson-mapper-asl:jar:1.4.2:compile
	[INFO] |  \- org.codehaus.jackson:jackson-core-asl:jar:1.4.2:compile
	[INFO] \- org.john:reaper:jar:1.0-SNAPSHOT:compile
	[INFO]    +- net.sf.opencsv:opencsv:jar:2.0:compile
	[INFO]    +- org.jsoup:jsoup:jar:1.6.3:compile
	[INFO]    \- cglib:cglib:jar:2.2:compile
	[INFO]       \- asm:asm:jar:3.1:compile
	[INFO] ------------------------------------------------------------------------
	[INFO] BUILD SUCCESSFUL
	[INFO] ------------------------------------------------------------------------
	[INFO] Total time: 6 seconds
	[INFO] Finished at: Thu Jul 05 15:27:18 PDT 2012
	[INFO] Final Memory: 17M/41M
	[INFO] ------------------------------------------------------------------------
	$

Also, the desired jar file ends up in the war file.

Code:

$ jar -tvf target/buscando-1.0.0-BUILD-SNAPSHOT.war | grep reap
 29808 Mon Jul 09 19:07:50 PDT 2012 WEB-INF/lib/reaper-1.0-SNAPSHOT.jar

Unfortunately, when debugging on the server via STS, the WebappClassLoader can find a class which is in reaper-1.0-SNAPSHOT.jar. Why doesn't it get copied to the server directory? I noticed one difference in STS's dependency manager. reaper-1.0-SNAPSHOT.jar is representing with a folder icon while all others use a jar icon. This might make sense since reaper-1.0-SNAPSHOT.jar is local while the others are remote. Do I need to set a container specific path in STS? Or perhaps, explicitly tell STS to export this jar?

-jk

Code:

	SEVERE: Servlet.service() for servlet [appServlet] in context with path [/BuscandoColetivo] threw exception [Handler processing failed; nested exception is java.lang.NoClassDefFoundError: org/john/app/domain/AccreditedPostsecondaryInstitution] with root cause
	java.lang.ClassNotFoundException: org.john.app.domain.AccreditedPostsecondaryInstitution
		at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1711)
		at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1556)
		at org.john.buscando.services.InstitutionRepository.findBounded(InstitutionRepository.java:42)
		at org.john.buscando.MapController.getInstitutions(MapController.java:41)
		at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
		at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
		at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
		at java.lang.reflect.Method.invoke(Method.java:616)
		at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213)
		at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)
		at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)
		at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)
		at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)
		at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
		at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
		at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
		at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
		at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
		at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
		at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
		at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
		at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
		at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
		at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
		at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
		at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
		at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
		at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
		at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
		at com.springsource.insight.collection.tcserver.request.HttpRequestOperationCollectionValve.traceNextValve(HttpRequestOperationCollectionValve.java:116)
		at com.springsource.insight.collection.tcserver.request.HttpRequestOperationCollectionValve.invoke(HttpRequestOperationCollectionValve.java:98)
		at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
		at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999)
		at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565)
		at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)
		at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
		at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
		at java.lang.Thread.run(Thread.java:636)

**Andrew Eisenberg** · Jul 10th, 2012, 11:04 AM

Are you using m2eclipse to manage your maven projects in STS? And if so, are you launching your project form within STS? If so, there is an m2eclipse option to "Resolve workspace dependencies". Make sure this is checked. To do so, go here:

1. Debug as...
2. Open the maven debug launch configuration for your project
3. Ensure "Resolve workspace dependencies" is checked

This means that rather than looking inside of your local repository to resolve your artifacts, your eclipse workspace will be looked at first.

Another thing I see that is odd is that you specify your local repository explciitly:

<repository>
<id>JK local</id>
<name>john's repo</name>
<url>file:///home/jkern/.m2/repository</url>
</repository>

Typically, this is not necessary. I'd recommend removing it. Let me know if this helps.

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