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FileUpload problem: InputStream does not contain a serialized object

Posted on Jan 05, 2005 at 07:18 PM 27 Views

Hi All,

I'm using the FileUpload component in a JSPDynPage and the htmlb component seems to work fine but I cannot read the file (InputStream). I get the following error(IOException): "InputStream does not contain a serialized object".

Please let me know what is wrong with my code. This is a part of the code I used:

public FileInputStream sourceFileInput;
public ObjectInputStream input;

FileUpload fu;
fu = (FileUpload) this.getComponentByName("myFileUpload");

IFileParam fileParam = ((FileUpload) getComponentByName("myFileUpload")).getFile();

File f       = fileParam.getFile();
file         = fu.getFile().getFile();
absolutepath = fu.getFile().getFile().getAbsolutePath();

this.sourceFileInput = new FileInputStream(file);
input = new ObjectInputStream(sourceFileInput);

The last line of code seems to generate te error.

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3 Answers

  • author's profile photo Former Member
    Former Member
    Posted on Jan 06, 2005 at 08:16 AM
    1

    Hi,

    I used the FileUpload component to store files from the client to CM so when I read the file I was able to read from a FileInputStream straight into a byte array. I'm not sure if this will be any help to you since I don't know what you're doing with the file once uploaded but here is some code;

    <code>

    FileUpload fu = (FileUpload)this.getComponentByName("myFileUpload");

    if(fu!=null){

    __IFileParam fileParam = fu.getFile();

    __if(fileParam!=null){

    ____File f = fileParam.getFile();

    ____if(f!=null){

    ______FileInputStream fis = new FileInputStream(f);

    ______byte[] bytes = new byte[(int)f.length()];

    ______fis.read(bytes);

    ______...

    ______...

    ____}

    __}

    }

    </code>

    This read the file contents into the byte array.

    SinceI was writing the file as a resource into CM I was able then to write;

    <code>

    IContent aContent = new Content(new ByteArrayInputStream(bytes), fileParam.getContentType(), (int)f.length());

    </code>

    and then store it as a resource in the CM.

    I hope it helps.

    P.

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    • Former Member Detlev Beutner
      Jan 12, 2005 at 04:22 PM

      Hi,

      I have found the answers, thank you both.

      (I included the examle code. Perhaps of some use to someone.)

      FileUpload fu;
fu = null;
fu = (FileUpload) this.getComponentByName("myFileUpload");
//	  this is the temporary file
if (fu != null) {
	IFileParam fileParam = ((FileUpload) getComponentByName("myFileUpload")).getFile();
	if (fileParam != null) {
		// get info about this file and create a FileInputStream
		File f = fileParam.getFile();
		if (f != null) {
			try {
				fis = new FileInputStream(f);
			}
			// process exceptions opening files
			catch (FileNotFoundException ex) {
				myBean.setMessage(
					"1" + f + ex.getLocalizedMessage());
			}
			isr = new InputStreamReader(fis);
			br = new BufferedReader(isr);
		}
	}
}
String textLine = "";

do {
	try {
		textLine = (String) br.readLine();
	} catch (IOException e) {
		myBean.setMessage(
			"1" + e.getLocalizedMessage());
	};
	// Jco append table & put data into the record 
	// (I_FILE is the table with txt data that is sent to the RFC)
	I_FILE.appendRow();	
	I_FILE.setValue(textLine, "REC");						
} while (textLine != null);

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  • author's profile photo Detlev Beutner
    Detlev Beutner
    Posted on Jan 06, 2005 at 09:58 AM
    0

    Hi Raymond,

    the problem is the last line. An ObjectInputStream is for reading serialized java objects, see http://java.sun.com/j2se/1.4.2/docs/api/java/io/ObjectInputStream.html

    So just use the sourceFileInput to read from, as Patrick has stated.

    Hope it helps

    Detlev

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  • author's profile photo Former Member
    Former Member
    Posted on Jan 06, 2005 at 11:43 AM
    0

    FileOutputStream has a write(byte[] b) method, give it a go and see how it turns out. I'm working on a different project (different place) just now and don't have access to that code so I can't run the test myself.

    Let us know how it goes.

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