Here, we use reflection because we have loaded the application using a class loader that is not the system class loader.
这里，我们使用反射的原因是因为我们已经使用非系统类加载器加载了应用程序。
The parent of this class loader will be the class loader of the current thread context.
类加载器的父类加载器将是当前线程上下文的类加载器。
When there is a hierarchy of class loaders, the root class loader, which is the bootstrap class loader, attempts to load the class first.
当类加载器存在一个层次结构时，根类加载器(即引导类加载器)将首先尝试加载类。
应用推荐