Ok - I agree that this is strange. However, when I tried just bytes,
the output file was even worse. So that tells me I don't know much
about how to correctly do IO (which I don't). Can you suggest an
alternative so that the bytes are outputted correctly.
I have tried a method like the following; but the output file isn't
correct either. The straight bytes out produces even more incorrectly
translated characters when looking at the raw file using wordpad. I
have lot more ? characters than using the one that converted to a String
first. Could I be reading the input file incorrectly in the
getBytesFromFile method.
private static void test3() throws IOException{
byte[] inBytes = getBytesFromFile(new File("c:\\var\\pdfif.txt"));
Base64 decoder = new Base64();
byte[] decodedBytes= decoder.decode(inBytes);
BufferedWriter out = new BufferedWriter(new FileWriter(new
File("c:\\var\\test.pdf")));
for(int x=0; x<decodedBytes.length; x++){
out.write(decodedBytes[x]);
}
out.flush();
out.close();
}
// Returns the contents of the file in a byte array.
public static byte[] getBytesFromFile(File file) throws IOException {
InputStream is = new FileInputStream(file);
// Get the size of the file
long length = file.length();
// You cannot create an array using a long type.
// It needs to be an int type.
// Before converting to an int type, check
// to ensure that file is not larger than Integer.MAX_VALUE.
if (length > Integer.MAX_VALUE) {
// File is too large
}
// Create the byte array to hold the data
byte[] bytes = new byte[(int)length];
// Read in the bytes
int offset = 0;
int numRead = 0;
while (offset < bytes.length
&& (numRead=is.read(bytes, offset, bytes.length-offset)) >=
0) {
offset += numRead;
}
// Ensure all the bytes have been read in
if (offset < bytes.length) {
throw new IOException("Could not completely read file
"+file.getName());
}
// Close the input stream and return bytes
is.close();
return bytes;
}
Thanks for looking at this.
Chris....
[EMAIL PROTECTED] wrote:
Selon Chris Hane <[EMAIL PROTECTED]>:
char[] msgChars = new String(decoder.decode(b)).toCharArray();
This looks rather strange to me. When you decode something from Base64, you
expect the output to be (or contain in your case) pure binary data, you cannot
put it into a character array. When you do this, the JVM uses its default
character encoding setting and may well mangle your data. You should really
stick to bytes, not characters.
I'm not sure the problem is really here, though. It just looks strange to me.
Luc
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