JsonMappingException: Direct self-reference leading to cycle (through reference chain: MyClass["underlyingValue"])

Question

I have a POJO class extending net.sf.gilead.pojo.gwt.LightEntity. I am not able to serialize the POJO object to JSON string using com.fasterxml.jackson.databind.ObjectMapper.writeValueAsString(obj). I am getting this error

com.fasterxml.jackson.databind.JsonMappingException: 
Direct self-reference leading to cycle 
(through reference chain: com.example.MyClass["underlyingValue"])

Noticed that the LightEntity class has this method:

public Object getUnderlyingValue() {
   return this;
}

score 3 · Accepted Answer · answered Jun 18 '18 at 09:09

How about to try to override this method in your MyClass class and add the @JsonIgnore annotation?

Example:

public class MyClass extends LightEntity {

    @JsonIgnore
    @Override
    public Object getUnderlyingValue() {
        return super.getUnderlyingValue();
    }

}

JsonMappingException: Direct self-reference leading to cycle (through reference chain: MyClass["underlyingValue"])

1 Answers1