spring动态加载class文件

类要继承classLoader才有defineClass方法 还有实现ApplicationContextAware接口
public String test() throws Exception{
String myPath = "file:/D:/test/class/MyMain.class";
System.out.println(myPath);
byte[] cLassBytes = null;
Path path = null;
try {
path = Paths.get(new URI(myPath));
cLassBytes = Files.readAllBytes(path);
} catch (IOException | URISyntaxException e) {
e.printStackTrace();
}
Class clz = defineClass("MyMain", cLassBytes, 0, cLassBytes.length);
Method method = clz.getMethod("test");
Object obj = clz.newInstance();
// method.invoke(obj);
ConfigurableApplicationContext cc = (ConfigurableApplicationContext)context;
DefaultListableBeanFactory factory = (DefaultListableBeanFactory)cc.getBeanFactory();
BeanDefinitionBuilder buider = BeanDefinitionBuilder.genericBeanDefinition(clz);

Field[] field = clz.getDeclaredFields();
for(Field field1 : field){
buider.addPropertyReference(field1.getName(),field1.getName());
}

        factory.registerBeanDefinition("myMain",buider.getRawBeanDefinition());
Object obj1 =  context.getBean("myMain");
        method.invoke(obj1);
return "ok";
}