Insputstream to File convert

Not working


present code


FileOutputStream fos = new FileOutputStream"somename");
                               byte[] buf = new byte[256];
                               int read = 0;
                               while ((read = is.read(buf)) >= 0) {
                               fos.write(buf, 0, read);
                               }
                               fos.close();


                              System.out.println("File Size "+ file.length());===> 0 size      

>> FileOutputStream fos = new FileOutputStream("somename");  should be ...typo

After close, do

System.out.println("File Size "+ new File("somename").length());

Of course, it there's nothing in 'is' then there'll be nothing to write and you'll end up with a file of length 0

i am sorry, the entire code is like this

 file = new File(fileName);  // i have a fileName set
                              
                               FileOutputStream fos = new FileOutputStream(file);
                               byte[] buf = new byte[256];
                               int read = 0;
                               while ((read = is.read(buf)) >= 0) {
                               fos.write(buf, 0, read);
                               }
                               fos.close();


                              System.out.println("File Size "+ file.length());  ==>0 size

better you look at this link
http://docs.google.com/View?docid=dc83hzcs_351cn8d7fgw

I have added the relevant code .

I am creating a File object so that i can pass that file object to another method as argument.

any i have already tested that inputstream has contents because i have dumped the inputstream into hard disk and i can open the file .

But i dont want to dump the file now . i want to  make a File object from the inputstream and want to pass this File object to a method which needs that .

unfortunately , i am getting a zero size file

>>i want to  make a File object from the inputstream and want to pass this File object to a method which needs that .

That will be OK if the FileOutputStream has been closed. Not otherwise

>>But i dont want to dump the file now . i want to  make a File object from the inputstream and want to pass this File object to a method which needs that .
>>

File object simply refers/link the physical file, it can't hold data on its own.

You may better store the content into a ByteArrayOutPutStream and pass that to the method you want to use

you can use the toByteArray method to retrieve the data from it!

@CHEJ

>>That will be OK if the FileOutputStream has been closed. Not otherwise.

I have already done that fos.close()   but still its showing file size =0

@ksivananth:

I understand your point.

>You may better store the content into a ByteArrayOutPutStream and pass that to the method you want to use
>you can use the toByteArray method to retrieve the data from it!


here is the snippet of the code in another method which uses the File object
javax.activation.DataHandler dhSource = new javax.activation.DataHandler(new javax.activation.FileDataSource(this.fileData)); //fileData is a File object


so, you understand now why i am trying to convert the inputstream to a File object.

What should i do now ? how do i need to code here ?
                              
                        

Try doing

new URLDataSource(new URL("file:newname"))

and using that for the DataHandler

In fact you can do just

new DataHandler(new URL("file:newname"))

@CHEJ ,

I dont have the url ....i have the inputstream

i got the inputstream from the soap  this way ...

org.apache.axis.attachments.AttachmentPart attachment = (org.apache.axis.attachments.AttachmentPart)it.next();
                      javax.activation.DataHandler dh = attachment.getDataHandler();
                      org.apache.axis.attachments.ManagedMemoryDataSource mmds = (org.apache.axis.attachments.ManagedMemoryDataSource)dh.getDataSource();
                     
                          java.io.InputStream is = mmds.getInputStream();

tell me one thing ,can i equate the data handler ?

 javax.activation.DataHandler dh = attachment.getDataHandler();



javax.activation.DataHandler dhSource = dh; // plugged the data handler and skipping rest

>>tell me one thing ,can i equate the data handler ?

Possibly - give it a try...

>>Possibly - give it a try...
 i can not test  that cause  its going to a third party service on the fly and i don't have access/info to that service . they also don't send back the acknowledgment . my task is to just put the file on their soap request header.

I think ,it wont ...because it will copy shallow .....not the whole things .

I have to sort out some other way

I think you're going to have to go with the original plan

> tell me one thing ,can i equate the data handler ?

no you can't