How to solve circular reference in json serializer caused by hibernate bidirectional mapping?

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I rely on Google JSON To handle this kind of issue by using The feature

Excluding Fields From Serialization and Deserialization

Suppose a bi-directional relationship between A and B class as follows

public class A implements Serializable {

    private B b;

}

And B

public class B implements Serializable {

    private A a;

}

Now use GsonBuilder To get a custom Gson object as follows (Notice setExclusionStrategies method)

Gson gson = new GsonBuilder()
    .setExclusionStrategies(new ExclusionStrategy() {

        public boolean shouldSkipClass(Class<?> clazz) {
            return (clazz == B.class);
        }

        /**
          * Custom field exclusion goes here
          */
        public boolean shouldSkipField(FieldAttributes f) {
            return false;
        }

     })
    /**
      * Use serializeNulls method if you want To serialize null values 
      * By default, Gson does not serialize null values
      */
    .serializeNulls()
    .create();

Now our circular reference

A a = new A();
B b = new B();

a.setB(b);
b.setA(a);

String json = gson.toJson(a);
System.out.println(json);

Take a look at GsonBuilder class

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