ARUNKUMAR NOHWAR created AXIS2-5661:
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Summary: Axis2 1.6.2 @ Websphere 8.5 emits NumberFormatException
intermittently.
Key: AXIS2-5661
URL: https://issues.apache.org/jira/browse/AXIS2-5661
Project: Axis2
Issue Type: Improvement
Components: transports
Affects Versions: 1.6.2
Environment: Websphere 8.5 on Linux
Reporter: ARUNKUMAR NOHWAR
Recently we upgraded from[Axis2-1.4.1 on Websphere-7.0] to [Axis2-1.6.2 on
Websphere-8.5]. And the same application code start giving an intermittent
exception. The stacktrace of the exception can be found at the end of the
description.
Analysis -
The creation of these system properties is the root cause of the issue.
http.proxyHost and http.proxyPort
These system porperties are created with non-null but empty string "" values.
We find that our application has no logic to create these properties. These
properties probably created by a 3rd party library or websphere server.
Workaround -
We write a code to remove these system properties (System.clearProperty()) just
before the flow goes to Axis2 part of the application.
We cannot write this code during application startup as these properties are
created intermittently when the application is running for few days and the
exception appears again.
Recommendations -
In this axis code
package org.apache.axis2.transport.http.util
class HTTPProxyConfigurationUtil
method configure(MessageContext messageContext,
HttpClient httpClient,
HostConfiguration config)
the exception appears at the following line of code -
String port = System.getProperty(HTTP_PROXY_PORT);
if(port != null) {
proxyPort = Integer.parseInt(port);
}
This is because the non-null but empty-string ("") valued key HTTP_PROXY_PORT,
results in NumberFormatException.
Can we please add an empty-string value check in the "if" condition ?
Adding further thse empty-string valued keys, both host and port, might
overwrite the correct values built from axis2.xml. Hence we can apply the same
checks to both of the system properties - host and port - if conditions.
StackTrace -
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
at java.lang.reflect.Method.invoke(Method.java:611)
…….
at
com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
at
com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1862)
Caused by: java.lang.NumberFormatException: For input string: ""
at
java.lang.NumberFormatException.forInputString(NumberFormatException.java:59)
at java.lang.Integer.parseInt(Integer.java:481)
at java.lang.Integer.parseInt(Integer.java:510)
at
org.apache.axis2.transport.http.util.HTTPProxyConfigurationUtil.configure(HTTPProxyConfigurationUtil.java:154)
at
org.apache.axis2.transport.http.AbstractHTTPSender.getHostConfiguration(AbstractHTTPSender.java:294)
at
org.apache.axis2.transport.http.AbstractHTTPSender.executeMethod(AbstractHTTPSender.java:591)
at
org.apache.axis2.transport.http.HTTPSender.sendViaPost(HTTPSender.java:193)
at
org.apache.axis2.transport.http.HTTPSender.send(HTTPSender.java:75)
at
org.apache.axis2.transport.http.CommonsHTTPTransportSender.writeMessageWithCommons(CommonsHTTPTransportSender.java:404)
at
org.apache.axis2.transport.http.CommonsHTTPTransportSender.invoke(CommonsHTTPTransportSender.java:231)
at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:443)
at
org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:406)
at
org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:229)
at
org.apache.axis2.client.OperationClient.execute(OperationClient.java:165)
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