I ended up grabbing the Jersey source and hard coding the tracing on.
That got me to the actual exception being thrown.  
    private void skipPreamble() {
        while(true) {
            if (!eof) {
                fillBuf();
            }
            int start = match(buf, 0, len);     // matches boundary
            if (start == -1) {
                // No boundary is found
                if (eof) {
Exception>>>        throw new MIMEParsingException("Missing start
boundary");
                } else {
                    adjustBuf(len-bl+1, bl-1);
                    continue;
                }
            }
Apparently, the message is getting mangled somewhere.  Is it Mule that
is doing this, or Jersey?  How do I check?
org.jvnet.mimepull.MIMEParser.skipPreamble() line: 313	
org.jvnet.mimepull.MIMEParser.access$300(org.jvnet.mimepull.MIMEParser)
line: 67	
org.jvnet.mimepull.MIMEParser$MIMEEventIterator.next() line: 143	
org.jvnet.mimepull.MIMEParser$MIMEEventIterator.next() line: 128	
org.jvnet.mimepull.MIMEMessage.makeProgress() line: 198	
org.jvnet.mimepull.MIMEMessage.parseAll() line: 181	
org.jvnet.mimepull.MIMEMessage.getAttachments() line: 106	
com.sun.jersey.multipart.impl.MultiPartReaderServerSide(com.sun.jersey.m
ultipart.impl.MultiPartReaderClientSide).readMultiPart(java.lang.Class<c
om.sun.jersey.multipart.MultiPart>, java.lang.reflect.Type,
java.lang.annotation.Annotation[], javax.ws.rs.core.MediaType,
javax.ws.rs.core.MultivaluedMap<java.lang.String,java.lang.String>,
java.io.InputStream) line: 177	
com.sun.jersey.multipart.impl.MultiPartReaderServerSide.readMultiPart(ja
va.lang.Class<com.sun.jersey.multipart.MultiPart>,
java.lang.reflect.Type, java.lang.annotation.Annotation[],
javax.ws.rs.core.MediaType,
javax.ws.rs.core.MultivaluedMap<java.lang.String,java.lang.String>,
java.io.InputStream) line: 80	
com.sun.jersey.multipart.impl.MultiPartReaderServerSide(com.sun.jersey.m
ultipart.impl.MultiPartReaderClientSide).readFrom(java.lang.Class<com.su
n.jersey.multipart.MultiPart>, java.lang.reflect.Type,
java.lang.annotation.Annotation[], javax.ws.rs.core.MediaType,
javax.ws.rs.core.MultivaluedMap<java.lang.String,java.lang.String>,
java.io.InputStream) line: 139	
com.sun.jersey.multipart.impl.MultiPartReaderServerSide(com.sun.jersey.m
ultipart.impl.MultiPartReaderClientSide).readFrom(java.lang.Class,
java.lang.reflect.Type, java.lang.annotation.Annotation[],
javax.ws.rs.core.MediaType, javax.ws.rs.core.MultivaluedMap,
java.io.InputStream) line: 77	
com.sun.jersey.spi.container.ContainerRequest.getEntity(java.lang.Class<
T>, java.lang.reflect.Type, java.lang.annotation.Annotation[]) line: 470
com.sun.jersey.spi.container.ContainerRequest.getEntity(java.lang.Class<
T>) line: 534	
com.sun.jersey.multipart.impl.FormDataMultiPartDispatchProvider$FormData
InjectableValuesProvider.getInjectableValues(com.sun.jersey.api.core.Htt
pContext) line: 122	
com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodD
ispatchProvider$ResponseOutInvoker(com.sun.jersey.server.impl.model.meth
od.dispatch.AbstractResourceMethodDispatchProvider$EntityParamInInvoker)
.getParams(com.sun.jersey.api.core.HttpContext) line: 153	
com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodD
ispatchProvider$ResponseOutInvoker._dispatch(java.lang.Object,
com.sun.jersey.api.core.HttpContext) line: 203	
com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodD
ispatchProvider$ResponseOutInvoker(com.sun.jersey.server.impl.model.meth
od.dispatch.ResourceJavaMethodDispatcher).dispatch(java.lang.Object,
com.sun.jersey.api.core.HttpContext) line: 75	
com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(java.lang.Cha
rSequence, java.lang.Object,
com.sun.jersey.spi.uri.rules.UriRuleContext) line: 288	
com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(java.lang.
CharSequence, java.lang.Object,
com.sun.jersey.spi.uri.rules.UriRuleContext) line: 147	
com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(java.lang.
CharSequence, java.lang.Object,
com.sun.jersey.spi.uri.rules.UriRuleContext) line: 108	
com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(java.lang.
CharSequence, java.lang.Object,
com.sun.jersey.spi.uri.rules.UriRuleContext) line: 147	
com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(java
.lang.CharSequence, java.lang.Object,
com.sun.jersey.spi.uri.rules.UriRuleContext) line: 84	
com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest
(com.sun.jersey.server.impl.application.WebApplicationContext,
com.sun.jersey.spi.container.ContainerRequest) line: 1468	
com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest
(com.sun.jersey.server.impl.application.WebApplicationContext,
com.sun.jersey.spi.container.ContainerRequest,
com.sun.jersey.spi.container.ContainerResponse) line: 1399	
com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(
com.sun.jersey.spi.container.ContainerRequest,
com.sun.jersey.spi.container.ContainerResponse) line: 1348	 
Ben Mathews
-----Original Message-----
From: Jakub Podlesak [mailto:jakub.podlesak_at_oracle.com] 
Sent: Thursday, June 30, 2011 1:19 AM
To: users_at_jersey.java.net
Subject: [Jersey] Re: turn on tracing from within mule
Hi Benjamin,
Does Mule allow you to customize the default resource configuration
somehow?
You should be able to add the feature there. Could you please try to ask
Mule guys about that? What version of Mule are you using?
~Jakub
On 06/29/2011 01:01 AM, benjamin.mathews_at_ingenix.com wrote:
> I'm using jersey from within Mule.  I'd like to turn on tracing as 
> described in http://blogs.oracle.com/sandoz/entry/tracing_in_jersey.  
> ou should
>
> <init-param>
>      <param-name>com.sun.jersey.config.feature.Trace</param-name>
>      <param-value>true</param-value>
> </init-param>
>
> But, there isn't a web.xml to put these parameter configuration 
> statements in.
>
> Mule is initializing the Jersey DefaultResourceConfig with the below 
> stack trace.  I can't figure out how to set the Trace string to true 
> in this context.
>
> Does anyone have any ideas how to do this?
>
>
com.sun.jersey.api.core.DefaultResourceConfig.<init>(java.util.Set<java
> .lang.Class<?>>) line: 94	
> org.mule.module.jersey.JerseyResourcesComponent.createConfiguration(ja
> v
> a.util.Set<java.lang.Class<?>>) line: 92
> org.mule.module.jersey.JerseyResourcesComponent.doInitialise() line: 
> 84
>
> org.mule.component.AbstractComponent$1.onTransition(java.lang.String,
> org.mule.api.component.Component) line: 247	
> org.mule.component.AbstractComponent$1.onTransition(java.lang.String,
> java.lang.Object) line: 220	
> org.mule.component.ComponentLifecycleManager(org.mule.lifecycle.Abstra
> c tLifecycleManager<O>).invokePhase(java.lang.String, 
> java.lang.Object,
> org.mule.api.lifecycle.LifecycleCallback) line: 141	
> org.mule.component.ComponentLifecycleManager.fireInitialisePhase(org.m
> u
> le.api.lifecycle.LifecycleCallback<org.mule.api.component.Component>)
> line: 54
>
org.mule.module.jersey.JerseyResourcesComponent(org.mule.component.Abst
> ractComponent).initialise() line: 219	
> org.mule.processor.chain.InterceptingChainLifecycleWrapper(org.mule.pr
> o
> cessor.chain.AbstractMessageProcessorChain).initialise() line: 103
>
> org.mule.construct.SimpleFlowConstruct(org.mule.construct.AbstractFlow
> C
> onstruct).initialiseIfInitialisable(java.lang.Object) line: 354 
>
org.mule.construct.AbstractFlowConstruct$1.onTransition(java.lang.Strin
> g, org.mule.api.construct.FlowConstruct) line: 116	
>
org.mule.construct.AbstractFlowConstruct$1.onTransition(java.lang.Strin
> g, java.lang.Object) line: 95	
> org.mule.construct.FlowConstructLifecycleManager(org.mule.lifecycle.Ab
> s tractLifecycleManager<O>).invokePhase(java.lang.String,
> java.lang.Object, org.mule.api.lifecycle.LifecycleCallback) line: 141
>
> org.mule.construct.FlowConstructLifecycleManager.fireInitialisePhase(o
> r 
> g.mule.api.lifecycle.LifecycleCallback<org.mule.api.construct.FlowCons
> t
> ruct>) line: 81
> org.mule.construct.SimpleFlowConstruct(org.mule.construct.AbstractFlow
> C
> onstruct).initialise() line: 94
> sun.reflect.NativeMethodAccessorImpl.invoke0(java.lang.reflect.Method,
> java.lang.Object, java.lang.Object[]) line: not available [native 
> method] sun.reflect.NativeMethodAccessorImpl.invoke(java.lang.Object,
> java.lang.Object[]) line: 57	
> sun.reflect.DelegatingMethodAccessorImpl.invoke(java.lang.Object,
> java.lang.Object[]) line: 43
> java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object...)
> line: 616	
> org.springframework.beans.factory.support.DefaultListableBeanFactory(o
> r 
> g.springframework.beans.factory.support.AbstractAutowireCapableBeanFac
> t ory).invokeCustomInitMethod(java.lang.String, java.lang.Object,
> org.springframework.beans.factory.support.RootBeanDefinition) line:
> 1536
> org.springframework.beans.factory.support.DefaultListableBeanFactory(o
> r 
> g.springframework.beans.factory.support.AbstractAutowireCapableBeanFac
> t ory).invokeInitMethods(java.lang.String, java.lang.Object,
> org.springframework.beans.factory.support.RootBeanDefinition) line:
> 1477	
> org.springframework.beans.factory.support.DefaultListableBeanFactory(o
> r 
> g.springframework.beans.factory.support.AbstractAutowireCapableBeanFac
> t ory).initializeBean(java.lang.String, java.lang.Object,
> org.springframework.beans.factory.support.RootBeanDefinition) line:
> 1409
> org.springframework.beans.factory.support.DefaultListableBeanFactory(o
> r 
> g.springframework.beans.factory.support.AbstractAutowireCapableBeanFac
> t
> ory).doCreateBean(java.lang.String,
> org.springframework.beans.factory.support.RootBeanDefinition,
> java.lang.Object[]) line: 519	
> org.springframework.beans.factory.support.DefaultListableBeanFactory(o
> r 
> g.springframework.beans.factory.support.AbstractAutowireCapableBeanFac
> t
> ory).createBean(java.lang.String,
> org.springframework.beans.factory.support.RootBeanDefinition,
> java.lang.Object[]) line: 456	
>
org.springframework.beans.factory.support.AbstractBeanFactory$1.getObje
> ct() line: 291	
> org.springframework.beans.factory.support.DefaultListableBeanFactory(o
> r 
> g.springframework.beans.factory.support.DefaultSingletonBeanRegistry).
> g
> etSingleton(java.lang.String,
> org.springframework.beans.factory.ObjectFactory) line: 222 
> org.springframework.beans.factory.support.DefaultListableBeanFactory(o
> r 
> g.springframework.beans.factory.support.AbstractBeanFactory).doGetBean
> ( java.lang.String, java.lang.Class<T>, java.lang.Object[], boolean)
> line: 288
> org.springframework.beans.factory.support.DefaultListableBeanFactory(o
> r 
> g.springframework.beans.factory.support.AbstractBeanFactory).getBean(j
> a
> va.lang.String) line: 190
>
org.springframework.beans.factory.support.DefaultListableBeanFactory.pr
> eInstantiateSingletons() line: 574	
> org.mule.config.spring.MuleApplicationContext(org.springframework.cont
> e 
> xt.support.AbstractApplicationContext).finishBeanFactoryInitialization
> ( 
>
org.springframework.beans.factory.config.ConfigurableListableBeanFactor
> y) line: 895	
>
org.mule.config.spring.MuleApplicationContext(org.springframework.conte
> xt.support.AbstractApplicationContext).refresh() line: 425	
> org.mule.config.spring.SpringRegistry.doInitialise() line: 89	
>
org.mule.config.spring.SpringRegistry(org.mule.registry.AbstractRegistr
> y).initialise() line: 107	
> org.mule.config.spring.SpringXmlConfigurationBuilder.createSpringRegis
> t
> ry(org.mule.api.MuleContext,
> org.springframework.context.ApplicationContext) line: 116 
>
org.mule.config.spring.SpringXmlConfigurationBuilder.doConfigure(org.mu
> le.api.MuleContext) line: 73	
> org.mule.config.spring.SpringXmlConfigurationBuilder(org.mule.config.b
> u 
>
ilders.AbstractConfigurationBuilder).configure(org.mule.api.MuleContext
> ) line: 47	
> org.mule.config.spring.SpringXmlConfigurationBuilder(org.mule.config.b
> u 
>
ilders.AbstractResourceConfigurationBuilder).configure(org.mule.api.Mul
> eContext) line: 78	
>
org.mule.config.builders.AutoConfigurationBuilder.autoConfigure(org.mul
> e.api.MuleContext, org.mule.config.ConfigResource[]) line: 101	
>
org.mule.config.builders.AutoConfigurationBuilder.doConfigure(org.mule.
> api.MuleContext) line: 57	
> org.mule.config.builders.AutoConfigurationBuilder(org.mule.config.buil
> d
> ers.AbstractConfigurationBuilder).configure(org.mule.api.MuleContext)
> line: 47
> org.mule.config.builders.AutoConfigurationBuilder(org.mule.config.buil
> d 
> ers.AbstractResourceConfigurationBuilder).configure(org.mule.api.MuleC
> o
> ntext) line: 78
> org.mule.context.DefaultMuleContextFactory.createMuleContext(org.mule.
> a pi.config.ConfigurationBuilder, java.util.Properties,
> org.mule.api.config.MuleConfiguration) line: 198
> org.mule.MuleServer.initialize() line: 391	
> org.mule.MuleServer.run() line: 277	
> org.mule.MuleServer.start(boolean, boolean) line: 264	
> org.mule.MuleServer.main(java.lang.String[]) line: 134	
>
> Ben Mathews
>
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