RESTEasy Unable to scan WEB-INF for JAX-RS annotations ?

Question

Developing REST service, with file upload function with resteasy, after added resteasy multipart dependency, following strange error message prompt during the application start up?

P.S Using resteasy-jaxrs and resteasy-multipart version 2.2.1.GA.


SEVERE: Exception sending context initialized event to listener instance of class
       org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap
       java.lang.RuntimeException: Unable to scan WEB-INF for JAX-RS annotations, 
       you must manually register your classes/resources
	//...
	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: java.io.EOFException: Unexpected end of ZLIB input stream
	at java.util.zip.InflaterInputStream.fill(InflaterInputStream.java:223)
	at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:141)
	at java.util.zip.ZipInputStream.read(ZipInputStream.java:146)
	//...
	at org.scannotation.AnnotationDB.scanClass(AnnotationDB.java:343)
	at org.scannotation.AnnotationDB.scanArchives(AnnotationDB.java:326)
	at org.jboss.resteasy.plugins.server.servlet.ConfigurationBootstrap
        .createDeployment(ConfigurationBootstrap.java:163)
	... 17 more
09 Julai 2011 1:52:13 PM org.apache.catalina.core.StandardContext listenerStop
SEVERE: Exception sending context destroyed event to listener instance of class 
org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap
java.lang.NullPointerException
	at org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap.contextDestroyed...

Solution

Not sure what is the root caused of it, two solutions :

1. Downgrade Version

Downgrade “resteasy-multipart-provider” to version 2.2.0.GA get the problem solved.


		<dependency>
			<groupId>org.jboss.resteasy</groupId>
			<artifactId>resteasy-jaxrs</artifactId>
			<version>2.2.1.GA</version>
		</dependency>

		<dependency>
			<groupId>org.jboss.resteasy</groupId>
			<artifactId>resteasy-multipart-provider</artifactId>
			<version>2.2.0.GA</version>
		</dependency>

2. Register RESTEasy Manually

Disable RESTEasy auto service scanning mode, and register it manually. Not sure why, but it works.

File : web.xml


       <!-- disabled auto scan mode
       <context-param>
		<param-name>resteasy.scan</param-name>
		<param-value>true</param-value>
	</context-param>
         -->
	<context-param>
		<param-name>resteasy.resources</param-name>
		<param-value>your REST service</param-value>
	</context-param>

About the Author

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mkyong
Founder of Mkyong.com, love Java and open source stuff. Follow him on Twitter. If you like my tutorials, consider make a donation to these charities.

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elgselgsJAX-RS TUTORIALS | BUYWORKSELLKirantejJAX-RS Tutorial Recent comment authors
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elgselgs
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elgselgs

I deleted the scannotation-1.0.3.jar from my lib folder, and downloaded the source code, printed the bad url. It turned out to be: jndi:/localhost/Enoch2/WEB-INF/lib/.svn/

elgselgs
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elgselgs

Resteasy should be the victim, too. The problem is at scannotation-1.0.3.jar.
DirectoryIteratorFactory factory = registry.get(url.getProtocol());

if (factory == null) throw new IOException(“Unable to scan directory of protocol: ” + url.getProtocol());

return factory.create(url, filter);
It seems when the url.getProtocol() returns “jdni”, this problem happens. I’m still investigating what url will return protocol as jndi.

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JAX-RS TUTORIALS | BUYWORKSELL

[…] RESTEasy Unable to scan WEB-INF for JAX-RS annotations, Unexpected end of ZLIB input stream […]

Kiran
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Kiran

I am using javassist-3.6.0.GA.jar, resteasy-jaxb-provider-1.2.GA.jar, resteasy-jaxrs-1.2.GA.jar & scannotation-1.0.2.jar and while deploying i am getting the below error; any thoughts?

java.lang.RuntimeException: Unable to scan WEB-INF for JAX-RS annotations, you must manually register your classes/resources
	at org.jboss.resteasy.plugins.server.servlet.ConfigurationBootstrap.createDeployment(ConfigurationBootstrap.java:160)
	at org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap.contextInitialized(ResteasyBootstrap.java:27)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3854)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4352)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:752)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:732)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:553)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)

This same webservice was working fine till yesterday; i just built once again with my app level code changes, it started cribbing now…

Kiran
Guest
Kiran

I cracked it, its nothing to do with any jar file version or other. I have extracted a jar file (myjar.jar) in my library folder for verification into myjar folder and without deleting it i started building the war file.

So when war file is built, in the web-inf/lib/myjar folder is empty and class loading was happening from the empty folder instead of myjar.jar; so the above error came.

Now i removed the extracted folder and rebuilt the war file which lead to successful deployment and testing.

Silly thing but killed my 8hrs of time and sleepless night :)

tej
Guest
tej

I resolved by adding
scannotation-1.0.2.jar
javassist-3.14.0-GA.jar

trackback
JAX-RS Tutorial

[…] with Spring framework.Common Error MessagesSome common error messages in JAX-RS development.RESTEasy Unable to scan WEB-INF for JAX-RS annotations, Unexpected end of ZLIB input streamClassNotFoundException : org.jboss.resteasy.plugins.providers.multipart.MultipartInputRESTEasy […]