qsLI commented on issue #8174:
URL: https://github.com/apache/shardingsphere/issues/8174#issuecomment-727933178
Simple code to reproduce
```java
@RunWith(JUnit4ClassRunner.class)
public class MarshalTest implements InvocationHandler {
@Test
public void testMarshal() {
AInterface proxy = (AInterface)
Proxy.newProxyInstance(AInterface.class.getClassLoader(),
new Class<?>[] {AInterface.class}, this);
final Properties properties = new Properties();
properties.put("test", proxy);
final String s = new Yaml(new
DefaultYamlRepresenter()).dumpAsMap(properties);
System.out.println("s = " + s);
}
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws
Throwable {
return null;
}
public static class SimpleImpl implements AInterface {
@Override
public String hello() {
return null;
}
}
public interface AInterface {
String hello();
}
}
```
result:

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