<dependency>
    <groupId>com.baidubce</groupId>
    <artifactId>bce-java-sdk</artifactId>
    <version>{version}</version>
</dependency>

com.baidubce
       ├── auth                                        //BCE签名相关类
       ├── http                                        //BCE的Http通信相关类
       ├── internal                                    //SDK内部类
       ├── model                                       //BCE公用model类
       ├── services
       │       └── bec                                 //BEC服务相关类
       │           ├── model                           //BEC内部model，如Request或Response
       │           ├── BecClient.class                 //BEC客户端入口类
       │           └── BecClientConfiguration.class    //针对BEC特有的HttpClient的配置
       ├── util                                        //BCE公用工具类
       ├── BceClientConfiguration.class                //对BCE的HttpClient的配置
       ├── BceClientException.class                    //BCE客户端的异常类
       ├── BceServiceException.class                   //与BCE服务端交互后的异常类
       ├── ErrorCode.class                             //BCE通用的错误码
       └── Region.class                                //BCE提供服务的区域