cos-java-sdk-v5 
maven坐标
<dependency>
<groupId>com.qcloud</groupId>
<artifactId>cos_api</artifactId>
<version>5.6.75</version>
</dependency>cos-java-sdk-v5 适用于COS XML API https://www.qcloud.com/document/product/436/7751,
JSON API 请参照 https://github.com/tencentyun/cos-java-sdk-v4
示例程序 demo 请参照 https://github.com/tencentyun/cos-java-sdk-v5/blob/master/src/main/java/com/qcloud/cos/demo 下的示例代码
常见问题:
请参考FAQ