java sdk 文件分片上传

[helloWorldPsyduck]

Java/src/test/java/com/qcloud/cssg/TransferUploadObject.java 75行
persistableUpload = upload.getResumeableMultipartUploadId();
获取的值一直是null。
打印信息：
org.apache.http.impl.conn.PoolingHttpClientConnectionManager - Closing expired connections
org.apache.http.impl.conn.PoolingHttpClientConnectionManager - Closing connections idle longer than 60000 MILLISECONDS