how to handle connection refused exception while pushing messages in the camel exchange to Kafka end point.Kafka may be down or it will be down during the process.. please help me how to handle this type of scenarios
I tried with onException block it is not working
you can try this:
`
.doTry()
.to("kafka:....)
.endDoTry()
.doCatch(Exception.class)
.to("direct:handleTechnicalCommunicationError")
.end()
`
Write a separete route direct:handleTechnicalCommunicationError for handling this error
Related
I'm using geoserver-2.20.3.war together with Apache Tomcat/9.0.36 on Linux. Everything works as it should but if i try to access the server status via the web administration interface i only get Error messages. I can't really figure out the problem and how to fix it.
`HTTP Status 500 – Internal Server Error
Type Exception Report
Message Handler dispatch failed; nested exception is java.lang.InternalError: java.lang.reflect.InvocationTargetException
Beschreibung The server encountered an unexpected condition that prevented it from fulfilling the request.
Exception
org.springframework.web.util.NestedServletException: Handler dispatch failed; nested exception is java.lang.InternalError: java.lang.reflect.InvocationTargetException
...
Root Cause
java.lang.InternalError: java.lang.reflect.InvocationTargetException
...
Root Cause
java.lang.reflect.InvocationTargetException
...
Root Cause
java.lang.NullPointerException
java.desktop/sun.awt.FontConfiguration.getVersion(FontConfiguration.java:1262)
java.desktop/sun.awt.FontConfiguration.readFontConfigFile(FontConfiguration.java:225)
java.desktop/sun.awt.FontConfiguration.init(FontConfiguration.java:107)
java.desktop/sun.awt.X11FontManager.createFontConfiguration(X11FontManager.java:719)
...
I tried to find a similar issue but unfortunately did not stumble over something really helpful.
I found a solution! The problem were missing fonts. After following these very helpful steps by Andreas Ahlenstorf and installing the font-package dejavu-fonts on linux everything works fine.
I have just started working on Spring Batch (version 3.0.6). I have a job and inside step I'm having Reader->Processor->Writer.
How we can catch or identify the exception is thrown if file is not found while reading. In this case I want to trigger email.
You can use the StepExecutionListener to process the exception that is thrown by the ItemStream#open (as the opening of a file in the FlatFileItemReader is), sending your email from there. To get the exception that caused the failure, you can look at StepExecution#getFailureExceptions which will contain the exception that caused the step to fail.
You can read more about the StepExecutionListener in the javadoc here: https://docs.spring.io/spring-batch/apidocs/org/springframework/batch/core/StepExecutionListener.html
i'm trying to catch Exception in CAMEL, when there is no connection, like this :
<from uri="imap://Uri"/>
<onException>
<exception>javax.mail.MessagingException</exception>
<exception>java.net.NoRouteToHostException</exception>
<handled>
<constant>true</constant>
</handled>
<transform>
<simple>Error reported: ${exception.message} - cannot process this message.</simple>
</transform>
</onException>
But it dont work. I got this error message:
javax.mail.MessagingException: No route to host: connect;
nested exception is:
java.net.NoRouteToHostException: No route to host: connect
What's wrong ?
If the error is from the consumer, eg the <from> then you need to bridge the error handler from the consumer.
See this FAQ:
http://camel.apache.org/why-does-my-file-consumer-not-pick-up-the-file-and-how-do-i-let-the-file-consumer-use-the-camel-error-handler.html
The bridge option is also possible for the mail component.
I am developing a SOAP client with Apache CXF. One method of the request returns me this stack in the client. With SOAPUI the same request returns me the expected response. Maybe I lost a library in JNLP? Maybe it is a binding problem?
2013-11-08 15:31:16,593 ERROR [es.isoftsanidad.eprescribe.comunclient.paneles.buscadorfarmacos.ListadoPF5Controlador] [setListaObjetos] Error en establecer el listado de los objetos
javax.xml.ws.soap.SOAPFaultException: Couldn't create SOAP message due to exception: Unable to create StAX reader or writer
at org.apache.cxf.jaxws.JaxWsClientProxy.invoke(JaxWsClientProxy.java:157)
at
.....
Caused by: org.apache.cxf.binding.soap.SoapFault: Couldn't create SOAP message due to exception: Unable to create StAX reader or writer
at org.apache.cxf.binding.soap.interceptor.Soap11FaultInInterceptor.unmarshalFault(Soap11FaultInInterceptor.java:84)
at org.apache.cxf.binding.soap.interceptor.Soap11FaultInInterceptor.handleMessage(Soap11FaultInInterceptor.java:51)
at org.apache.cxf.binding.soap.interceptor.Soap11FaultInInterceptor.handleMessage(Soap11FaultInInterceptor.java:40)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:272)
at org.apache.cxf.interceptor.AbstractFaultChainInitiatorObserver.onMessage(AbstractFaultChainInitiatorObserver.java:113)
at org.apache.cxf.jaxws.handler.soap.SOAPHandlerInterceptor.handleMessage(SOAPHandlerInterceptor.java:140)
at org.apache.cxf.jaxws.handler.soap.SOAPHandlerInterceptor.handleMessage(SOAPHandlerInterceptor.java:71)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:272)
at org.apache.cxf.endpoint.ClientImpl.onMessage(ClientImpl.java:835)
at org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.handleResponseInternal(HTTPConduit.java:1606)
at org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.handleResponse(HTTPConduit.java:1502)
at org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.close(HTTPConduit.java:1309)
at org.apache.cxf.transport.AbstractConduit.close(AbstractConduit.java:56)
at org.apache.cxf.transport.http.HTTPConduit.close(HTTPConduit.java:627)
at org.apache.cxf.interceptor.MessageSenderInterceptor$MessageSenderEndingInterceptor.handleMessage(MessageSenderInterceptor.java:62)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:272)
at org.apache.cxf.endpoint.ClientImpl.doInvoke(ClientImpl.java:565)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:474)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:377)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:330)
at org.apache.cxf.frontend.ClientProxy.invokeSync(ClientProxy.java:96)
at org.apache.cxf.jaxws.JaxWsClientProxy.invoke(JaxWsClientProxy.java:135)
Check the logs on the server side. This is the message that the server is sending back in it's SOAP fault. Thus, something is happening on the server side that needs investigating.
I am using JBoss 6.0. I am running a simple webserver using the jboss.resteasy library to provide simple XML responses to HTTP requests.
I have:
- A server
- A simple Java Client that creates a GET request
Now the thing is, if I use the browser to access the URL, I get the wanted XML. But if I use my Java client, which has the following code:
//Register the fake instrument
GetMethod get = new GetMethod("http:/localhost:8080/"+PROJECT_NAME+"/webserver/registerInstrument/?name=FakeClient&value=0");
HttpClient client = new HttpClient();
try {
int status = client.executeMethod(get);
} catch (HttpException e) {
System.out.println("[FakeClient] HttpException executing AddInstrument GET request: "+e);
} catch (IOException e) {
System.out.println("[FakeClient] IOException executing AddInstrument GET request: "+e);
}
Then I get the following exception:
log4j:WARN No appenders could be found for logger (org.apache.commons.httpclient.params.DefaultHttpParams).
log4j:WARN Please initialize the log4j system properly.
Exception in thread "main" java.lang.IllegalArgumentException: Host name may not be null
at org.apache.commons.httpclient.HttpHost.<init>(HttpHost.java:68)
at org.apache.commons.httpclient.HttpHost.<init>(HttpHost.java:107)
at org.apache.commons.httpclient.HttpMethodBase.setURI(HttpMethodBase.java:280)
at org.apache.commons.httpclient.HttpMethodBase.<init>(HttpMethodBase.java:220)
at org.apache.commons.httpclient.methods.GetMethod.<init>(GetMethod.java:89)
at client.FakeClient.<init>(FakeClient.java:30)
at client.FakeClient.main(FakeClient.java:22)
At first I thought this could be a problem with the JBoss logging, but if I access the URL through the browser, I obtain the desired XML with no problems.
Is this a problem with the Java client application?
Thank you
The 'log4j:WARN' is just a warning. It has nothing do to with the actual exception being thrown.
The exception message states that 'Host name may not be null'. This clearly indicates that there is something wrong the the hostname. And looking at you code, I can spot one error.
You need to add an extra forward slash:
GetMethod get = new GetMethod("http://localhost:8080/" ...