/** The key of the configuration. e.g. 262144000 */
    String HTTP_FILEUPLOAD_MAX_SIZE = "http.fileupload.max.size";

    /** The key of the configuration. e.g. 262144 */
    String HTTP_FILEUPLOAD_THRESHOLD_SIZE = "http.fileupload.threshold.size";

    /** The key of the configuration. e.g. 10 */
    String HTTP_FILEUPLOAD_MAX_FILE_COUNT = "http.fileupload.max.file.count";