Re: [JBoss-user] error writing a document to a local file

[kiuma]

You can't write to a file from an ejb,
you should instead use an MBean to do this.
ciao,
kiuma
Gordon wrote:

Hi.
I have a problem writing a SVG document to a local directory
My code works in a normal java class but when i use it in an ejb, i 
get an error. The svg file is created in the local drive but the 
content is not written to it.My code and the error is below.
(am using jdk 1.3.1 & jboss 2.4.1)
Any help would be great.
Thanks.
Gordon.

code:

    Writer w = new FileWriter(uri);
          DOMUtilities.writeDocument(doc, w);   (The error occurs at 
this line)
          w.flush();
          w.close();



error:

[SVGController] TRANSACTION ROLLBACK EXCEPTION:null
Embedded Exception
null; nested exception is:
        javax.ejb.EJBException: null
Embedded Exception
null
[SVGController] java.lang.NullPointerException
[SVGController]         at 
org.apache.batik.dom.util.DOMUtilities.writeDocument(Unknown Source)
[SVGController]         at 
ie.ejb.SVGControllerBean.writeDocument(Unknown Source)
[SVGController]         at java.lang.reflect.Method.invoke(Native Method)
[SVGController]         at 
org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionC 

.java:543)
[SVGController]         at 
org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInst 

rceptor.java:87)
[SVGController]         at 
org.jboss.ejb.plugins.TxInterceptorCMT.invokeNext(TxInterceptorCMT.java:133) 

[SVGController]         at 
org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:307) 

[SVGController]         at 
org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:99)
[SVGController]         at 
org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:128) 

[SVGController]         at 
org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:195)
[SVGController]         at 
org.jboss.ejb.StatelessSessionContainer.invoke(StatelessSessionContainer.java:286) 

[SVGController]         at 
org.jboss.ejb.plugins.jrmp.server.JRMPContainerInvoker.invoke(JRMPContainerInvoker.ja 

[SVGController]         at java.lang.reflect.Method.invoke(Native Method)
[SVGController]         at 
sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:241)
[SVGController]         at 
sun.rmi.transport.Transport$1.run(Transport.java:152)
[SVGController]         at 
java.security.AccessController.doPrivileged(Native Method)
[SVGController]         at 
sun.rmi.transport.Transport.serviceCall(Transport.java:148)
[SVGController]         at 
sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:465)
[SVGController]         at 
sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:706) 

[SVGController]         at java.lang.Thread.run(Thread.java:484)

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