apm-sdk-plugin org.apache.skywalking 6.3.0 4.0.0 apm-struts2-2.x-plugin jar struts2-2.x-plugin http://maven.apache.org UTF-8 2.3.1 3.1.0 2.0 org.apache.struts struts2-core ${struts2-core.version} provided javax.servlet javax.servlet-api ${javax-servlet-api.version} provided javax.servlet jsp-api ${jsp-api.version} test