Java-httpClient警告: Going to buffer response body of large or unknown size. Using getResponseBodyAsStream instead is recommended.

public abstract class HttpMethodBase
    implements HttpMethod
{
...
    public byte[] getResponseBody() throws IOException {
        if (responseBody == null) {
            InputStream instream = getResponseBodyAsStream();
            if (instream != null) {
                long contentLength = getResponseContentLength();
                if (contentLength > 2147483647L){
                    throw new IOException("Content too large to be buffered: " + contentLength + " bytes");
　　　　　　　　　　}
                int limit = getParams().getIntParameter("http.method.response.buffer.warnlimit", 1048576);
                if (contentLength == -1L || contentLength > (long) limit){
                    LOG.warn("Going to buffer response body of large or unknown size. Using getResponseBodyAsStream instead is recommended.");
　　　　　　　　　　}
                LOG.debug("Buffering response body");
                ByteArrayOutputStream outstream = new ByteArrayOutputStream(contentLength <= 0L ? 4096: (int) contentLength);
                byte buffer[] = new byte[4096];
                int len;
                while ((len = instream.read(buffer)) > 0){
　　　　　　　　　　　　outstream.write(buffer, 0, len);
　　　　　　　　　　}
                outstream.close();
                setResponseStream(null);
                responseBody = outstream.toByteArray();
            }
        }
        return responseBody;
    }
...
}