将Java对象传递给RESTful服务

Question

I'm passing a Java object to a Web service that accepts json, using HttpURLConnection . Employing com.fasterxml.jackson to convert the object to json string and then writing it to the output stream, the service works fine for simple dummy POJOs, but the application breaks when I use a complex object that I'm originally intend to send, with the console filled with exceptions like StackOverflow and endless clutter of

at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:690) at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:155)

Common solutions are like annotating the class with json annotation. Is there any other way to get around it, like using different accept:content-type for web service (other than json or xml as they require annotated objects) or like that?

Answer 1

You can use mixin annotations to provide hints for Jackson on how to serialize your data, without polluting the POJO with unnecessary dependencies.

Here's the reference to documentation article, that has good example: http://wiki.fasterxml.com/JacksonMixInAnnotations