/**
     * The HTTP status code for Bad Request.
     */
    public static final int BAD_REQUEST_STATUS_CODE = 400;

    /**
     * The HTTP status code for Forbidden.
     */
    public static final int FORBIDDEN_STATUS_CODE = 403;

    /**
     * The HTTP status code for Not Found.
     */
    public static final int NOT_FOUND_STATUS_CODE = 404;

    /**

                                    + " byte) is over " + maxLength + " byte. The url is " + filePath);
                        }
                    }
                } else {
                    // Forbidden
                    responseData.setHttpStatusCode(Constants.FORBIDDEN_STATUS_CODE);
                    responseData.setMimeType(APPLICATION_OCTET_STREAM);
                }
            } else if (file.isDirectory()) {

                        } else {
                            responseData.setResponseBody(file, false);
                        }
                    }
                } else {
                    // Forbidden
                    responseData.setHttpStatusCode(Constants.FORBIDDEN_STATUS_CODE);
                    responseData.setMimeType(APPLICATION_OCTET_STREAM);
                }
            } else if (file.isDirectory()) {

                                    + " byte) is over " + maxLength + " byte. The url is " + filePath);
                        }
                    }
                } else {
                    // Forbidden
                    responseData.setHttpStatusCode(Constants.FORBIDDEN_STATUS_CODE);
                    responseData.setMimeType(APPLICATION_OCTET_STREAM);
                }
            } else if (file.isDirectory()) {