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>
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