String filePath="test. The jar";
File file=new File(filePath);
URL the URL=file. ToURI (.) toURL ();
URLClassLoader loader=new URLClassLoader (new [URL] {URL});
String className="com. My. Test".

Class<?> ProcessorClass=loader. LoadClass (className);
The Object obj=processorClass. NewInstance ();
Method=processorClass. GetMethod (" getData ", String class, BodyBuf. Class)
Method. The invoke (obj, "12345", buf);

When you perform to processorClass. The getMethod stopped, that there is no return, no abnormalities,