apm-sdk-plugin org.skywalking 5.0-2018-preview 4.0.0 apm-struts2-2.x-plugin jar struts2-2.x-plugin http://maven.apache.org UTF-8 org.apache.struts struts2-core 2.3.1 provided javax.servlet javax.servlet-api 3.1.0 provided javax.servlet jsp-api 2.0 test org.apache.maven.plugins maven-source-plugin attach-sources none jar