Java introspection: object to map

Question

I have a Java object obj that has attributes obj.attr1, obj.attr2 etc. The attributes are possibly accessed through an extra level of

Answer 1

Here is a really easy way to do this.

Use Jackson JSON lib to convert the object to JSON.

Then read the JSON and convert it to a Map.

The map will contain everything you want.

Here is the 4 liner

ObjectMapper om = new ObjectMapper();
StringWriter sw = new StringWriter();
om.writeValue(object, sw);
Map map = om.readValue(sw.toString(), Map.class);

And additional win of course is that this is recursive and will create maps of maps if it needs to