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Web service call returns "Fault string, and possibly fault code, not set"

I have a java application (A) that calls the webservice.
1)Then I have another app (B) that uses the A jar.
The call is successful and needed data are returned.
2)Then I have web application that also uses the A jar.
In this case when the web service method is called from A app, an exception is thrown.
Since the class that executes the webservice call is the same in both cases, I'm not sure where the problem is.
The webservice is on https server. But I authenticate using credentials.
I think maybe something should be set in the web application, but I don't know what..
The exception is:
09:21:48.009 [http-nio-8084-exec-33] WARN o.a.cxf.phase.PhaseInterceptorChain - Interceptor for {http://www.myserver.com/ci}ci2#{http://www.myserver.com/ci}GetCertPath has thrown exception, unwinding now
java.lang.UnsupportedOperationException: null
at java.util.AbstractMap.put(AbstractMap.java:209) ~[na:1.8.0_92]
at org.apache.cxf.binding.soap.interceptor.SoapPreProtocolOutInterceptor.setSoapAction(SoapPreProtocolOutInterceptor.java:122) ~[cxf-rt-bindings-soap-2.7.16.jar:2.7.16]
javax.xml.ws.soap.SOAPFaultException: Fault string, and possibly fault code, not set
at org.apache.cxf.binding.soap.interceptor.SoapPreProtocolOutInterceptor.handleMessage(SoapPreProtocolOutInterceptor.java:63) ~[cxf-rt-bindings-soap-2.7.16.jar:2.7.16]
at org.apache.cxf.jaxws.JaxWsClientProxy.invoke(JaxWsClientProxy.java:158)
at org.apache.cxf.binding.soap.interceptor.SoapPreProtocolOutInterceptor.handleMessage(SoapPreProtocolOutInterceptor.java:47) ~[cxf-rt-bindings-soap-2.7.16.jar:2.7.16]
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:272) ~[cxf-api-2.7.16.jar:2.7.16]
at org.apache.cxf.endpoint.ClientImpl.doInvoke(ClientImpl.java:572) [cxf-api-2.7.16.jar:2.7.16]
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:481) [cxf-api-2.7.16.jar:2.7.16]
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:382) [cxf-api-2.7.16.jar:2.7.16]
at com.sun.proxy.$Proxy318.getCertPath(Unknown Source)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:335) [cxf-api-2.7.16.jar:2.7.16]
..... more lines here :) .....
at java.util.AbstractMap.put(AbstractMap.java:209)
at org.apache.cxf.binding.soap.interceptor.SoapPreProtocolOutInterceptor.setSoapAction(SoapPreProtocolOutInterceptor.java:122)
at org.apache.cxf.binding.soap.interceptor.SoapPreProtocolOutInterceptor.handleMessage(SoapPreProtocolOutInterceptor.java:63)
Fault string, and possibly fault code, not set
at org.apache.cxf.binding.soap.interceptor.SoapPreProtocolOutInterceptor.handleMessage(SoapPreProtocolOutInterceptor.java:47)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:272)
at org.apache.cxf.endpoint.ClientImpl.doInvoke(ClientImpl.java:572)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:481)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:382)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:335)
at org.apache.cxf.frontend.ClientProxy.invokeSync(ClientProxy.java:96)
at org.apache.cxf.jaxws.JaxWsClientProxy.invoke(JaxWsClientProxy.java:136)
... 59 more
Any ideas?
Thank you.
EDIT:
Does it have to have any headers set? When connecting in case 1, there is nothing specific set and it's working.

Ok, so I have found the issue. The request should have included the content-type. Which is strange that it didn't threw an exception in the first case...
I have added Content-Type: application/soap+xml; charset=utf-8 and the web application is working too.
As I found out the javax.xml.ws.soap.SOAPFaultException: Fault string, and possibly fault code, not set is mostly connected to missing content-type..

In my case, this was due to a simple badly formatted URL in a placeholder. http:/xxx.yyu (note the single /)
CXF wasn't very clear running in JDK6 but running in JDK8 was more explicit

How to diagnose "org.restlet.data.Parameter cannot be cast to org.restlet.data.Header" error in Restlet 2.3.5?

I'm using Restlet 2.3.5 in my application. When the GET request handler of a certain server resource is invoked, I get the following error:
[10:26:04] [Restlet-860541310/WARN]: Nov 29, 2015 10:26:04 AM org.restlet.engine.adapter.ServerAdapter addResponseHeaders
WARNING: Exception intercepted while adding the response headers
java.lang.ClassCastException: org.restlet.data.Parameter cannot be cast to org.restlet.data.Header
at org.restlet.engine.header.HeaderUtils.addExtensionHeaders(HeaderUtils.java:226)
at org.restlet.engine.header.HeaderUtils.addResponseHeaders(HeaderUtils.java:653)
at org.restlet.engine.adapter.ServerAdapter.addResponseHeaders(ServerAdapter.java:83)
at org.restlet.engine.adapter.ServerAdapter.commit(ServerAdapter.java:184)
at org.restlet.engine.adapter.HttpServerHelper.handle(HttpServerHelper.java:144)
at org.restlet.engine.connector.HttpServerHelper$1.handle(HttpServerHelper.java:64)
at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:77)
at sun.net.httpserver.AuthFilter.doFilter(AuthFilter.java:83)
at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:80)
at sun.net.httpserver.ServerImpl$Exchange$LinkHandler.handle(ServerImpl.java:677)
at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:77)
at sun.net.httpserver.ServerImpl$Exchange.run(ServerImpl.java:649)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
The problem is that this exception is thrown outside of the code that I wrote (I added logging statements in my server resource and according to them, the exception is thrown somewhere else).
As a result, I get 500 response (internal server error), even though my server resource sends correct data back to the client.
How can I find out, what exactly is causing this error?

This could be caused when trying to add custom headers in Restlet. When initializing the corresponding map, you would use a map (Series in Restlet) of Parameter instead of Header...
You can use something like that:
Series<Header> responseHeaders = (Series<Header>)
response.getAttributes().get(HeaderConstants.ATTRIBUTE_HEADERS);
if (responseHeaders == null) {
responseHeaders = new Series(Header.class);
response.getAttributes().put(
HeaderConstants.ATTRIBUTE_HEADERS, responseHeaders);
}
responseHeaders.add(new Header("X-MyHeader", "value"));
Hope it helps you,
Thierry

Issue with generating excel sheets in a web application

While working in a web application I have some issues with generating the excel sheet based on the result. This excel sheet data should be independent for each request. As of now I have implemented in the following way:
Created a xml file for excel configuration
spring-excel-views.xml
<bean id="excelView" class="com.test.service.excelService"
I have configure this xml in the servlet configuration file
<bean class="xmlReolver> //Mentioned clearly in the code but not here
<property name="location>
<value>bin/spring-excel-views.xml</value>
</property>
</bean>
Now I have controller class as well as an Utility class
UtiilityClass: computes the results and send back to the Controller
Controller: model.addAttribute("result", result); //Assuming result is coming for Utility class
Now in excelService.java coded as follows:
class ExcelService implements AbstractExcelView{
#overridden
protected void buildExcelDocument(Map model,HttpServletRequest req, HTTPServletResponse res){
Map m = model.getResults("results"); // Picking this from Controller
for(Map.Entry<Integer,String> entry: m.entrySet()){ -->Exception is throwing
//excel sheet logiic
}
//iteration logic ----> Exception thrown here
}
}
Here sometimes excel sheet is generating successfully and sometimes it is throwing Nullpointerexception before starting the iteration. Also this excel data is overriding with some other requests data. Displayed result is good but I'm having the problem with the excel sheet data.
Help me out to resolve this issue.
Exception Stack trace
Exception Report:
type Exception report
message Request processing failed; nested exception is java.lang.NullPointerException
description: The server encountered an internal error that prevented it from fulfilling this request.
exception:
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.
org. springframework. web. servlet. FrameworkServlet . processRequest (FrarneworkServlet. java: 932)
org.springframework.web.servlet.FrameworkServlet.doGet(Frameworkservlet.java:816)
javax.servlet.http.HttpServlet.service (HttpServlet.java: 620)
org.springframework.web.servlet.FrameworkServlet.service (FrameworkServlet.java:801)
javax.servlet.http.Httpservlet.service(Httpservlet.java:727)
root cause
java.lang.NullPointerException
com. hello. services.ExcelService.buildExcelDocument (Excelservice.java:34)
org. springframework.web.servlet.view.document.AbstractExcelView.renderMergedoutputModel (AbstractE
org.springfranework.web.servlet.view.AbstractView.render (AbstractView.java:264)
org.springframework.web.servlet.DispatcherServlet.render (Dispatcherservlet.java: 1208)
org. springframework . web . serviet . DispatcherServlet . processDispatchResult (DispatcherServlet . java: 1208
org. springframework. web. servlet . DispatcherServlet . doDispatch (DispatcherServlet . java: 939)
org. springframework.web.servlet.DispatcherServlet.doService (DispatcherServlet.java:856)
org. springframework.web.servlet.FrameworkServlet.processRequest (FrameworkServlet.java: 920)
org. springframework.web.servlet.FrameworkServlet.doGet (FrameeworkServlet.java:816)
javax.servlet.http.Httpservlet.service(Httpservlet.java: 620)
org.springframework.web.servlet.FrameworkServlet.service (FraneworkServlet.java:801)
javax.servlet.http.HttpServlet.service(Httpservlet.java:727)

As you pointed out that exception is throwing in the below line
for(Map.Entry entry: m.entrySet()){ -->Exception is throwing
You are getting this exception because model.getResults("results") is returning null.Thus your m is assigned null and doing m.entrySet() this on null reference is throwing null pointer exception.
So you'll have to figure out why model.getResults("results") is returning null and fix it. If there can occur situation where there will be no excel sheet generated and model.getResults("results") will return nulll. Then you'll have to provide appropriate checking in your code.Below is a checking but it may not be sufficient as you may to handle some more stuffs.
if(m!=null){
for(Map.Entry<Integer,String> entry: m.entrySet()){ -->Exception is throwing
//excel sheet logiic
}
//iteration logic ----> Exception thrown here
}
Regarding you question about Thread safe it completely depends how you have designed your class and using it which is very difficult to answer just by looking at the few lines. However this may not be an issue of Thread safe.

How do I get a Java WebService to actually show me exceptions from the proxy object?

I'm chasing what should be a simple NullPointerException but a webservice proxy keeps swallowing the error.
The WS is exposed through a simple client library, that client then calls the WS. Somewhere in the WS theres an NPE and I can't find it because the stack trace only shows "$Proxy.someMethod" instead of the cause of the issue.
How can I get the stack trace from the proxy object? Is there a good strategy to log or handle these exceptions?
...
Caused by: javax.xml.ws.soap.SOAPFaultException: java.lang.NullPointerException
at com.sun.xml.ws.fault.SOAP11Fault.getProtocolException(SOAP11Fault.java:187)
at com.sun.xml.ws.fault.SOAPFaultBuilder.createException(SOAPFaultBuilder.java:116)
at com.sun.xml.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:254)
at com.sun.xml.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:224)
at com.sun.xml.ws.client.sei.SEIStub.invoke(SEIStub.java:117)
******** I need the trace from this line *********
at $Proxy43.myMethod(Unknown Source)
*****************
at com.mypackage.client.MyClient.aMethod(MyClient.java:70)
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)
at org.mozilla.javascript.MemberBox.invoke(MemberBox.java:161)
... 17 more
I've done some reading and it seems like this has to do with checked vs. unchecked exceptions. So if I were throwing an IOException I'd get the stack trace, but since there is a NullPointerException bubbling up its not giving me the trace.

Wrap your service in a try/catch block and throw the exception that's defined as the fault element of the called service in your WSDL. That way the client will get a useable stacktrace.

java.lang.NoClassDefFoundError when running webservice client

I'm getting the following error when I run a webservice client I've created using: eclipse, j2sdk1.4.2_13, axis1.0 and a WSDL file.
java.lang.NoClassDefFoundError: javax/servlet/ServletContext
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:1655)
at java.lang.Class.getDeclaredMethod(Class.java:1262)
at org.apache.commons.discovery.tools.ClassUtils.findPublicStaticMethod(ClassUtils.java:116)
at org.apache.axis.configuration.EngineConfigurationFactoryFinder.newFactory(EngineConfigurationFactoryFinder.java:214)
at org.apache.axis.configuration.EngineConfigurationFactoryFinder.access$300(EngineConfigurationFactoryFinder.java:92)
at org.apache.axis.configuration.EngineConfigurationFactoryFinder$1.run(EngineConfigurationFactoryFinder.java:179)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.axis.configuration.EngineConfigurationFactoryFinder.newFactory(EngineConfigurationFactoryFinder.java:148)
at org.apache.axis.configuration.EngineConfigurationFactoryFinder.newFactory(EngineConfigurationFactoryFinder.java:204)
at org.apache.axis.client.Service.<init>(Service.java:111)
at com.example.xmlns.SOAPEventSourceBindingStub.<init>(SOAPEventSourceBindingStub.java:27)
at com.example.xmlns.SOAPEventSourceBindingStub.<init>(SOAPEventSourceBindingStub.java:17)
at com.example.xmlns.Cliente.main(Cliente.java:16)
Exception in thread "main"
The client is doing this:
SOAPEventSourceBindingStub stub = new SOAPEventSourceBindingStub();
public SOAPEventSourceBindingStub() throws org.apache.axis.AxisFault {
this(null); (this is line 17)
}
public SOAPEventSourceBindingStub(java.net.URL endpointURL, javax.xml.rpc.Service service) throws org.apache.axis.AxisFault {
this(service);
super.cachedEndpoint = endpointURL;
}
public SOAPEventSourceBindingStub(javax.xml.rpc.Service service) throws org.apache.axis.AxisFault {
if (service == null) {
super.service = new org.apache.axis.client.Service(); (this is line 27)
} else {
super.service = service;
}
...

You need the servlet Jar in your classpath or use a more recent version of axis.
NOTE: AXIS 1.0 version even on client side needs servlet JAR file or you get this exception:
(upcoming 1.1 version should have this fixed)
Exception in thread "main" java.lang.NoClassDefFoundError: javax/servlet/ServletContext
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:1613)
at java.lang.Class.getMethod0(Class.java:1732)
at java.lang.Class.getDeclaredMethod(Class.java:1219)
...
Resources :
cvs commit : xml-axis-wsif/java/lib/xerces2, xercesImpl_2_2_1.jar, xmlParserAPIs_2_2_1.jar

Had similar problem with desktop application. In Netbeans this appeared suddenly, though I was changing only unrelated sql queries. Problematic packages were still in my main package, though couldn't be found.
Solved renaming problematic classes in my main package (and renaming back, if needed). Also corrected naming standard deviations (some class names first letters were low-case).