Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:1.3.3.RELEASE:repackage (default) on project spring-boot-xjt: Execution default of goal org.springframework.boot:spring-boot-maven-plugin:1.3.3.RELEASE:repackage failed: Unable to find a single main class from the following candidates [com.xjt.Application, com.xjt.duaidi.KdniaoTrackQueryAPI, com.xjt.duaidi.Kuaidi100, com.xjt.test.Server2, com.xjt.test.Server3] -> [Help 1]
Reason: Looking at these classes, it is found that each of these classes does have a main method, remove a redundant main method, and retain the only main method.