4.0.0 mec com.ym 1.0 mec-thirdparty mec-thirdparty http://www.example.com com.ym mec-util com.aliyun.oss aliyun-sdk-oss 2.8.3 com.timevale tech-sdk 2.1.20 system ${project.basedir}/libs/tech-sdk-2.1.20.jar