Question

Using Servlet, I can do the following to process binary stream:

public void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

    InputStream inputStream = req.getInputStream();
    byte[] data = IOUtils.toByteArray(inputStream);

    // ...
    Result result = process(data);       
    // ...

    ServletOutputStream op = resp.getOutputStream();
    result.writeTo(resp.getOutputStream());
}

How I can do this in Wicket? (I have no clue after creating a page extends WebPage class)

Answer 1

I am now using AbstractResourceStreamWriter to implement the solution:

public MyApiPage(final PageParameters pageParameters) {

    HttpServletRequest httpServletRequest = getHttpRequest();
    byte[] data = IOUtils.toByteArray(httpServletRequest.getInputStream());
    IResourceStream resourceStream = new MyApiResourceStream(data);
    getRequestCycle().scheduleRequestHandlerAfterCurrent(new ResourceStreamRequestHandler(resourceStream));
}

private class MyApiResourceStream extends AbstractResourceStreamWriter {

    private byte[] data;
    public MyApiResourceStream(byte[] data) {
        this.data = data;
    }

    @Override
    public void write(Response webResponse) {
        byte[] convertedData = // do some works here...
        webResponse.write(convertedData);

    }
}