How to convert pdf file into byte array,retrieve byte array into pdf file in flex?

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Hi ,
i am new to flex, i have no idea to convert pdf file into byte array.and also i tried in google also but no results yet.can u prefer how to convert pdf file into byte array and retrieve byte array into pdf file in flex application.

it is urgent....

Thanks in advance.(nothing is impossible)

Posted 27-Mar-12 4:36am

Ram Sam 2

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TorstenH. · Answer 1 · 2012-03-27T06:02:00

Solution 1

You need to read the PDF (filereader), then you can convert that File-object into a byte Array. That is pretty simple, because any object can be converted int a byte array.

Reading, Writing, and Creating Files @ Java Tutorials[^]

Java

public static byte[] getBytes(Object obj) throws java.io.IOException{
      ByteArrayOutputStream bos = new ByteArrayOutputStream(); 
      ObjectOutputStream oos = new ObjectOutputStream(bos); 
      oos.writeObject(obj);
      oos.flush(); 
      oos.close(); 
      bos.close();
      byte [] data = bos.toByteArray();
      return data;
  }

Posted 27-Mar-12 6:02am

TorstenH.

Comments

Ram Sam 2 28-Mar-12 0:36am

k but i need code in flex .can u post code in that language?

TorstenH. 28-Mar-12 1:21am

...you want me to add

<mx:script xmlns:mx="#unknown">
<![CDATA[

// code goes here
].]>

...or where is the problem?

Ram Sam 2 28-Mar-12 2:29am

public var fileStream:FileStream;
public function browse_file(eve:MouseEvent):void{
file1 = File.documentsDirectory;
file1.addEventListener(Event.SELECT, handleSelectFile);
file1.browseForOpen("Select Picture");
}
public function handleSelectFile(event:Event):void
{
file_name.text = event.target.nativePath;
//stream=event.target.type;
//Alert.show(stream);
var fileloader:Loader = new Loader();
fileloader.contentLoaderInfo.addEventListener(Event.COMPLETE, handleLoadFile);
fileloader.load(new URLRequest(event.target.url));
}

public function handleLoadFile(event:Event):void
{

}
// upload button action
public function fileuploads(event:MouseEvent):void{

var file:File = new File(file_name.text);
if ( file.extension == "txt" )//we check to see if file extension is txt if not we don't do anything otherwise we execute the desired action
{
readfiles(file.url,file.name);

}else if(file.extension=="doc" || file.extension=='pdf'){
readpdffiles(file.url,file.name);
}
}

public function readpdffiles(target_url:String,fname:String,startIndex:int = 0,endIndex:int = int.MAX_VALUE):void
{
var file:File=new File(target_url);
var fs:FileStream=new FileStream();
fs.open(file,FileMode.READ);
var data:ByteArray=new ByteArray();
data.writeObject(fs.readByte());

}
note :here i am able to read txt file as string and able to store .but i dnt know for pdf,doc file?can u check?

TorstenH. 28-Mar-12 7:33am

seems like you have them as a File object there.

Now write the file temporary and throw that one at the Operating system:

final Program p = Program.findProgram("pdf");
p.execute(strFilePath);

so the OS takes care for opening the DOC or PDF File. That is the best and also simplest way to do this, because you do not insist on a certain PDF reader or office program. You just say "open this thingy with whatever you think is capable to do so".