从HTTP Request里取得body内容得到byte数组的方法。

ParseRequestBodyToBytes.java

public byte[] parse(HttpServletRequest request) {
        byte[] input = null;
        try {
            InputStream is = request.getInputStream();
            ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
        
            while (true) {
                int c = is.read();
                if (c == -1) break;
                byteStream.write((byte) c);
            }
        
            if (byteStream.size() > 0){
                input = byteStream.toByteArray();
            }
        
        } catch (IOException e) {
            Throwables.propagate(e);
        }
        return input;
}