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Teh,
Teh Noranis Mohd Aris wrote:
> Now, a file name that was input by the user
> was created BUT the problem is that, when I open the file, the word
> "null" was written to the file NOT the file content.
You probably have a null content variable. String.valueOf(null) returns
"null", so that's probably what's happening.
> The filename
> parameter was sent from the applet to the servlet BUT the file
> content parameter was not sent.
You're going to want to fix that.
> This means that the file content
> parameter does not exist and the servlet did not receive the file
> content parameter!
Sounds about right. If I were you, I would modify my program to do
nothing if there's no file content parameter. (Well, I would actually
use PUT and place the content in the body of the request, but...).
> servletUrl = new URL(servletName + "?filename=" + filename);
> con = servletUrl.openConnection();
> con.setDoOutput(true);
> con.connect();
So far so good.
> ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
> DataOutputStream out = new DataOutputStream(byteOut);
> out.writeUTF(teditor);
> out.flush();
> out.close();
Uhh... you put your data into a ByteArrayOutputStream and then did
nothing with it at all. You need to write it to the URLConnection's
OutputStream:
If you are going to be using UTF, you need to specify that when
connecting to your server so it knows what character set you are using.
Use the "Content-Type" header for this:
con.setRequestProperty("Content-Type", "text/plain; charset=UTF-8");
DataOutputStream uses "modified" UTF-8, and is actually intended to be
used with Java object serialization. Don't do this. Instead, use real
UTF-8 like this:
Instead of the above, do this:
OutputStreamWriter out
= new OutputStreamWriter(con.getOutputStream(), "UTF-8"));
out.write(teditor, 0, teditor.length());
out.flush();
out.close();
> DataInputStream in = new DataInputStream(con.getInputStream());
> in.close();
To be correct, you ought to empty this inputstream before closing it.
Also, if you ever hope to use non-text data, you should change your
content type to "application/octet-stream" with no encoding at all (the
encoding is basically "raw"). You'll also want to write bytes instead of
Strings to your output stream and get rid of the OutputStreamWriter.
- -chris
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