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From "Cooper (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CXF-4409) Proxy-based Client use Multipart getting NullPointerException
Date Fri, 06 Jul 2012 10:49:34 GMT
Cooper created CXF-4409:
---------------------------

             Summary: Proxy-based Client use Multipart getting NullPointerException
                 Key: CXF-4409
                 URL: https://issues.apache.org/jira/browse/CXF-4409
             Project: CXF
          Issue Type: Bug
          Components: JAX-RS
    Affects Versions: 2.6
         Environment: win32;x86_64;java 1.7.0_05-b05
            Reporter: Cooper
            Priority: Minor


It's all about the client, when use Proxy-based client API

Failed method signature of client restful interface as below:
	@POST
	@Path("/findEmployeePagingResults")
	@Consumes(MediaType.MULTIPART_FORM_DATA)
	@Produces(MediaType.APPLICATION_JSON)
	List<Employee> findEmployeePagingResults(
			@Multipart(value="condition", type=MediaType.APPLICATION_JSON) EmployeeCondition condition,
			@Multipart(value="firstResult") int firstResult,
			@Multipart(value="maxResults") int maxResults);
-------------------------------------------------------------------------
After try...
Success method signature is
	@POST
	@Path("/findEmployeePagingResults")
	@Consumes(MediaType.MULTIPART_FORM_DATA)
	@Produces(MediaType.APPLICATION_JSON)
	List<Employee> findEmployeePagingResults(
			@Multipart(value="condition", type=MediaType.APPLICATION_JSON) EmployeeCondition condition,
			@Multipart(value="firstResult", type=MediaType.TEXT_PLAIN) int firstResult,
			@Multipart(value="maxResults", type=MediaType.TEXT_PLAIN) int maxResults);
---------------------------------------------------------------------------

This problem occur cuz:
MultipartProvider.java: line 369
MessageBodyWriter<T> r = mc.getProviders().getMessageBodyWriter(cls, genericType, anns,
mt);

"mc.getProviders()" returns NULL when CXF try to get MessageBodyWriter for maxResults(that's
the 3rd time this method called)



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