Get Input object in Jersey Filter

There is no direct way I found where jersey can provide me input object ( conversion from json to java object) in Filter as it does in Resource.


Following is the code I used to accomplished it.

public <T> T getInputObject(HttpServletRequest request, Class<T> type) {
  if (request != null && type != null) {
   try {
    ServletInputStream inputStream = request.getInputStream();
    // Wrap a BufferedReader around the InputStream
    BufferedReader rd = new BufferedReader(new InputStreamReader(inputStream));
    // Read response until the end
    inputStream.mark(inputStream.available());
    StringBuffer total = new StringBuffer();
    
    String line = null;
    while ((line = rd.readLine()) != null) {
     total.append(line);
    }

    inputStream.reset();


    ObjectMapper obm = new ObjectMapper();
    return obm.readValue(total.toString(), type);
   } catch (Exception e) {
    logback.error("Exception during getting Input Object for jersey filter",e);
    return null;
   }
  }
  return null;
 }

You can call this method in your Jersey filter to get Input object.

MyRestInput input=getInputObject(request, MyRestInput .class);