[移动开发]Java 函数式方法名称获取

当函数式接口作为参数传入时，有时要获取传入的函数式接口的名称，可以利用SerializedLambda来获取

@FunctionalInterface
public interface MyFunction<T,R> extends Function<T,R>, Serializable {

    default SerializedLambda getSerializedLambda() throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
        Method method = getClass().getDeclaredMethod("writeReplace");
        boolean bAccess = method.isAccessible();
        method.setAccessible(true);
        SerializedLambda serializedLambda = (SerializedLambda) method.invoke(this);
        method.setAccessible(true);
        return serializedLambda;
    }

    default String getMethodName() throws NoSuchMethodException, IllegalAccessException, InvocationTargetException {
        SerializedLambda serializedLambda = getSerializedLambda();
        String methodName = serializedLambda.getImplMethodName();
        String className = serializedLambda.getImplClass();
        return methodName;
    }
}

public class Test{
	String testMethed(){
		return "test"
	}
	
	void mian(){
	
	}
	
	static <T> void getMethedName(MyFunction<Test,String> function) {
        String methedName = function.getMethodName();
    }
}