try {
Object req = getFieldValue(request, new String[]{"request"});
Object inputStream = getFieldValue(req, new String[]{"inputStream"});
Object ib = getFieldValue(inputStream, new String[]{"ib"});
Object coyoteRequest = getFieldValue(ib, new String[]{"coyoteRequest"});
Object inputBuffer = getFieldValue(coyoteRequest, new String[]{"inputBuffer"});
Object inputStream1 = getFieldValue(inputBuffer, new String[]{"inputStream"});
FileInputStream str = (FileInputStream)inputStream1;
str.close();
//inputStream1.getClass().getMethod("close").invoke(inputStream1);
} catch (IllegalAccessException e) {
e.printStackTrace();
}


getFieldValue() возвращает значение поля объекта