writing UI content to a file on a server

I've got a pop-up texta开发者_运维问答rea, where the user writes some lengthy comments. I would like to store the content of the textarea to a file on the server on "submit". What is the best way to do it and how?

THanks,

This would be very easy to do. The text could be just a string or stringBuffer for size and formatting, then just pass that to your java code and use file operations to write to a file.

This is some GWT code, but it's still Ajax, so it will be similar. Get a handler for an event to capture the button submittal, then get the text in the text area.

textArea.addChangeHandler(new ChangeHandler() {
        public void onChange(ChangeEvent changeEvent) {
            String text = textArea.getText();
        }
    });

The passing off mechanism I don't know because you don't show any code, but I just created a file of filenames, line by line by reading filenamesout of a list of files with this:

    private void writeFilesListToFile(List<File> filesList) {       
    for(File file : filesList){
        String fileName = file.getName();
        appendToFile(fileName);
    }
}

private void appendToFile(String text){
    try {
BufferedWriter out = new BufferedWriter(new FileWriter<file path andfile name>));
        out.write(text);
        out.newLine();
        out.close();
        } catch (IOException e) {
        System.out.println("Error appending file with filename: " + text);
        } 
}

You could do something similar, only write out the few lines you got from the textarea. Without more to go on I can't really get more specific.

HTH,

James