Exception in thread "main" java.lang.NoClassDefFoundError: org/springframework/boot/SpringApplicatio

Exception in thread "main" java.lang.NoClassDefFoundError: org/springframework/boot/SpringApplication
        at com.yonyou.dmscloud.part.PartApplication.main(PartApplication.java:16)
Caused by: java.lang.ClassNotFoundException: org.springframework.boot.SpringApplication
        at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        ... 1 more

 因为pom中activejdbc 插件报错，开发人员添加了一个标签导致打包部分jar没有打进去。

总结：导致这个问题的原因很多，后续再总结