Question

I have an interceptor for catching Exceptions and sending emails of this exceptions.

All my struts actions extend CoreController which implements SerlvetRequestAware.

In mail service class then I have:

CoreController cc = (CoreController)invocation.getAction();
HttpServletRequest request = cc.getRequest();

I want to insert request body to email, if exists. Like so:

StringWriter msg = new StringWriter();
msg.write("Requested URI: " + request.getRequestURI()+NEW_LINE);
msg.write("Requested Query String: " + request.getQueryString()+NEW_LINE);
msg.write("Request method: "+request.getMethod()+NEW_LINE);
try {
 if (request.getReader() != null) {
  msg.write("Request body: "+ request.getReader().readLine()+NEW_LINE);
  request.getReader().close();
 }
} catch (IOException e) {
    e.printStrackTrace();
} catch(IllegalStateException e) {
    e.printStrackTrace();
}

Now it always throws an IllegalStateException, when reader is not null. How could I “revert” reader or how any other way to read the request body?

EDIT
Exception: getInputStream() has already been called for this request

Answer 1

Perhaps you should try using the request’s InputStream rather than its Reader if you receive an IllegalStateException:

BufferedReader bufferedReader;
try {
    bufferedReader = request.getReader();
} catch (IllegalStateException e) {
    InputStream inputStream = request.getInputStream();

    // As per BalusC's comment:
    String charsetName = request.getCharacterEncoding();
    if (charsetName == null) {
        charsetName = "UTF-8";
    }

    InputStreamReader inputStreamReader = new InputStreamReader(inputStream, charsetName);
    bufferedReader = new BufferedReader(inputStreamReader);
}

bufferedReader.readLine();