初始化OSSClient报NullPointerException

Exception in thread "main" java.lang.ExceptionInInitializerError

at com.aliyun.oss.OSSClient.<init>(OSSClient.java:269)
at com.aliyun.oss.OSSClient.<init>(OSSClient.java:194)
at alioos.Demo1.main(Demo1.java:21)

Caused by: java.lang.NullPointerException

at com.aliyun.oss.common.utils.VersionInfoUtils.initializeVersion(VersionInfoUtils.java:53)
at com.aliyun.oss.common.utils.VersionInfoUtils.getVersion(VersionInfoUtils.java:38)
at com.aliyun.oss.common.utils.VersionInfoUtils.getDefaultUserAgent(VersionInfoUtils.java:45)
at com.aliyun.oss.ClientConfiguration.<clinit>(ClientConfiguration.java:41)
... 3 more