切换类加载器，解决Java Services 加载问题（大概也能解决Spring的上下文问题）

[cssxsh]

    val thread = Thread.currentThread()
    val oc = thread.contextClassLoader
    try {
        thread.contextClassLoader = XXXPlugin::class.java.classLoader
        // 需要切换上下文的代码
    } finally {
        thread.contextClassLoader = oc
    }