File Upload with DFS

Hi all,

I have implemented File upload with DFS using UCF as mentioned in DFS 6.0 sp1 Dev Guide.However when i tried to upload the file ,the DfsServiceServlet which

is responsible for creating File in docbase is taking file path from System where DfsServiceServlet is runing.Its not taking file from End User machine.When

I looked the API the FileContent() takes local file path as argument.

for ex. I gave file path as F://mydocuments/test.doc from End user m/c,but the servlet is looking for file in the local system instead of End user m/c and its throwing FileNotFound Exception.

Has any have experience...How do we make the DfsServiceServlet to point End user m/c file path and take the file for imorting into repository.

Regards,

karthick s

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Comments

JasonChen

Hi karthick,

The DfsServiceServlet runs as DFS client. It just like a normal Java application, it reads file from local system and transfer the content to docbase via UCF.

If you want to upload file with DFS&UCF in a browser, you can write an applet. This applet runs as DFS client.

Another solution is, write a Java stand alone application to transfer content with DFS & UCF, then run this application in End user m/c.

- Jason

karthick

Hi JasonChen

Thanks for ur reply.

I had written DFS service consumer code in applet(with hard coded object path ) and converted it into signed jar.Its working fine

when either as stand alone or hard coded value in applet class.

But if i pass object path dynamically from jsp page to Applet through java script,I am getting below exception.

com.emc.documentum.fs.rt.ServiceInvocationException: Service "com.emc.documentum.fs.services.core.ObjectService" is not available at url: "http://192.168.1.61:7001/services/core/ObjectService?WSDL"
    at com.emc.documentum.fs.rt.context.impl.DfsSoapService.newWebServiceClient(DfsSoapService.java:112)
    at com.emc.documentum.fs.rt.context.impl.DfsSoapService.getInstance(DfsSoapService.java:39)
    at com.emc.documentum.fs.rt.context.impl.DfsCachedService.getInstance(DfsCachedService.java:25)
    at com.emc.documentum.fs.rt.context.impl.DfsCachedUnlessChangedService.getInstance(DfsCachedUnlessChangedService.java:29)
    at com.emc.documentum.fs.rt.context.impl.ClientReflectionServiceInvoker.invoke(ClientReflectionServiceInvoker.java:30)
    at com.emc.documentum.fs.rt.context.impl.SoapClientInvocationHandler.invoke(SoapClientInvocationHandler.java:60)
    at com.emc.documentum.fs.rt.context.impl.UcfClientInvocationHandler.handleUCF(UcfClientInvocationHandler.java:58)
    at com.emc.documentum.fs.rt.context.impl.UcfClientInvocationHandler.invoke(UcfClientInvocationHandler.java:43)
    at com.emc.documentum.fs.rt.context.impl.HttpSessionInvocationHandler.invoke(HttpSessionInvocationHandler.java:58)
    at com.emc.documentum.fs.rt.context.impl.OperationOptionsHandler.invoke(OperationOptionsHandler.java:48)
    at com.emc.documentum.fs.rt.context.impl.ContextThreadLocalInvocationHandler.invoke(ContextThreadLocalInvocationHandler.java:36)
    at com.emc.documentum.fs.rt.context.impl.ReturnedContentTransformationHandler.invoke(ReturnedContentTransformationHandler.java:34)
    at com.emc.documentum.fs.rt.context.impl.ServiceContextInvocationHandler.invoke(ServiceContextInvocationHandler.java:30)
    at $Proxy12.create(Unknown Source)
    at com.mycompany.UcfUpload.importFile(UcfUpload.java:109)
    at com.mycompany.UcfUpload$1.run(UcfUpload.java:66)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.mycompany.UcfUpload.passObjectPath(UcfUpload.java:64)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at sun.plugin.javascript.invoke.JSInvoke.invoke(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at sun.plugin.javascript.JSClassLoader.invoke(Unknown Source)
    at sun.plugin.com.MethodDispatcher.invoke(Unknown Source)
    at sun.plugin.com.DispatchImpl.invokeImpl(Unknown Source)
    at sun.plugin.com.DispatchImpl$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.plugin.com.DispatchImpl.invoke(Unknown Source)
Caused by: java.lang.NullPointerException
    at com.sun.xml.ws.model.RuntimeModeler.getClass(RuntimeModeler.java:281)
    at com.sun.xml.ws.model.RuntimeModeler.processDocWrappedMethod(RuntimeModeler.java:596)
    at com.sun.xml.ws.model.RuntimeModeler.processMethod(RuntimeModeler.java:543)
    at com.sun.xml.ws.model.RuntimeModeler.processClass(RuntimeModeler.java:370)
    at com.sun.xml.ws.model.RuntimeModeler.buildRuntimeModel(RuntimeModeler.java:256)
    at com.sun.xml.ws.client.WSServiceDelegate.addSEI(WSServiceDelegate.java:616)
    at com.sun.xml.ws.client.WSServiceDelegate.getPort(WSServiceDelegate.java:319)
    at com.sun.xml.ws.client.WSServiceDelegate.getPort(WSServiceDelegate.java:302)
    at com.sun.xml.ws.client.WSServiceDelegate.getPort(WSServiceDelegate.java:295)
    at javax.xml.ws.Service.getPort(Service.java:92)
    at com.emc.documentum.fs.services.core.ObjectService.getObjectServicePort(ObjectService.java:56)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.emc.documentum.fs.rt.context.impl.DfsSoapService.newWebServiceClient(DfsSoapService.java:102)
    ... 32 more

I have attached source and the details of the log.some times i am getting AccessControl Exception and

com.sun.xml.bind.v2.bytecode.ClassTailor tailor WARNING: failed to tailor java.io.EOFException

Regards,

karthick

If i pass object path from jsp through Java Script without any kind hard code object Path values in applet),i am getting Null Pointer

Exception at the line of getting Remote ObjectService through ServiceFactory.

SampleApplet in init method.....
Jun 16, 2009 9:40:00 PM INFO: invoked runtime: java.lang.ProcessImpl@fd918a
Jun 16, 2009 9:40:02 PM INFO: connected, uid: 19
Applet is started
java.lang.NullPointerException
    at javax.xml.bind.ContextFinder.find(ContextFinder.java:279)
    at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:372)
    at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:337)
    at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:244)
    at com.emc.documentum.fs.rt.impl.servicemodel.JavaBeanTreeFactory.getModule(JavaBeanTreeFactory.java:51)
    at com.emc.documentum.fs.rt.context.ServiceFactory.getServiceFromXML(ServiceFactory.java:256)
    at com.emc.documentum.fs.rt.context.ServiceFactory.getRemoteService(ServiceFactory.java:249)
    at com.emc.documentum.fs.rt.context.ServiceFactory.getRemoteService(ServiceFactory.java:133)
    at com.mycompany.UcfUpload.importFile(UcfUpload.java:93)
    at com.mycompany.UcfUpload$1.run(UcfUpload.java:66)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.mycompany.UcfUpload.passObjectPath(UcfUpload.java:64)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at sun.plugin.javascript.invoke.JSInvoke.invoke(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at sun.plugin.javascript.JSClassLoader.invoke(Unknown Source)
    at sun.plugin.com.MethodDispatcher.invoke(Unknown Source)
    at sun.plugin.com.DispatchImpl.invokeImpl(Unknown Source)
    at sun.plugin.com.DispatchImpl$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.plugin.com.DispatchImpl.invoke(Unknown Source)

has any have experience with this kind of exception. can share ur ideas....

Regards,

karthick s

JasonChen

Hi karthick,

You can find how to enable UCF transfer in a web application via applet in DFS 6.5 development guide and get sample code from [dfs-sdk]\samples\UcfTransfer.

About tailor or access permission issue, refer to http://forums.java.net/jive/message.jspa?messageID=173757.

- Jason

karthick

Hi,

I had already created the applet and converted it into signed jar for use in web application.Now i am facing Runtime Error.

i used local file path(Hard coded like c://mydocument/test.doc) directly in the applet and converted into signed jar,by this way i can successfully upload file

from End user machine.

However if i try to pass local file path from java script to applet method,i am getting below NullPointerException,at the line

service = serviceFactory.getRemoteService(IObjectService.class, context, "core", "http://192.168.1.61:7001/services");

java.lang.NullPointerException
    at javax.xml.bind.ContextFinder.find(ContextFinder.java:279)
    at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:372)
    at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:337)
    at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:244)
    at com.emc.documentum.fs.rt.impl.servicemodel.JavaBeanTreeFactory.getModule(JavaBeanTreeFactory.java:51)
    at com.emc.documentum.fs.rt.context.ServiceFactory.getServiceFromXML(ServiceFactory.java:256)
    at com.emc.documentum.fs.rt.context.ServiceFactory.getRemoteService(ServiceFactory.java:249)
    at com.emc.documentum.fs.rt.context.ServiceFactory.getRemoteService(ServiceFactory.java:133)
    at com.mycompany.UcfUpload.importFile(UcfUpload.java:132)
    at com.mycompany.UcfUpload$1.run(UcfUpload.java:68)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.mycompany.UcfUpload.passObjectPath(UcfUpload.java:65)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at sun.plugin.javascript.invoke.JSInvoke.invoke(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at sun.plugin.javascript.JSClassLoader.invoke(Unknown Source)
    at sun.plugin.com.MethodDispatcher.invoke(Unknown Source)
    at sun.plugin.com.DispatchImpl.invokeImpl(Unknown Source)
    at sun.plugin.com.DispatchImpl$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.plugin.com.DispatchImpl.invoke(Unknown Source)

my question is

1.why i can get Remote object service when i hard coded the local file path in the applet directly and do upload successfully

2,why i am getting above NullPointerException in the applet when passing file path dynamically from Jsp page throu Java Script.whats the work around?

because in both cases i am invoking same method

1st case i am invoking uploadfile("c://documents/test.doc") from applet init method which is working fine.

2nd case i am invoking same method uploadfile("c://documents/test.doc") from jsp page through java script which is not working with NullPointerException..

Regards,

karthick s

zhou_simonq

Karthick,

From the log file you uploaded, it seems that the service you want to consume isn't available. Pls try the following url in your browser, such as IE, Firefox, etc.

http://192.168.1.61:7001/services/core/ObjectService?WSDL

You should get a wsdl file describing the Object Service.

Also, pls make sure DFS client SDK is available to your applet.

--simon

karthick

Hi,

Thanks for ur reply.

I could access object service URL from web browsers.

let me explain my scenrio.

I have applet method importFile(String localfilepath) who's task is import file into repository.I will invoke this method from JSP page through Java script.

so that from end user m/c i can import file.(I converted this applet class as signed jar with sdk lib jars inside it etc.)

My present issue is

When i call the method importFile from applet init() its working fine.ie public void init(){ importFile("c:/documents/test.doc") }

but if i call the same method from JSP page through JS, i am either getting NullPointerException at the line

"IObjectService service = serviceFactory.getRemoteService(IObjectService.class, context, "core", objectServiceURL + "/services");"

so i tested in different way,

1st call importFile from init().once its execution is over ,then call the same method from Java Script.In this case after the sucessful execution of

1st method call, 2nd method call from JS fails on line "IObjectService service = serviceFactory.getRemoteService(IObjectService.class, context, "core", objectServiceURL + "/services");" with below exception......

zhou_simonq

The exception shows that you cannot access Object Service via applet, though you can access it through browser.

Maybe you need to update file "java.policy" to grant the applet some privileges. I don't know whether you can achieve this by signing the jar file.

karthick

Hi,

If the policy file is not permitting,then how the method call importFile("c:/import/test.doc") from init method succeeds .only the call importFile("c:/import/test.doc") from JS (in jsp page) is not succeeding.

karthick s

zhou_simonq

the policy file can define different permissions, such as file access, socket operation, etc.

I know you've signed the applet. But from the first sight, the exception was caused by you cannot access the WSDL of the Object Service.

Maybe you can try access another url to test if your applet has permission to connect external web server.

-simon