Java map object, which contains JSON string fields to string

Question

I have faced problem, while mapping my object to JSON.

I have an object, which I need to convert to propper JSON, but some of my object's String fields are already in JSON format:

Sdr sdr = new Sdr();
sdr.setLocation_area(("location_area"));
sdr.setEvent_info(("{\"chargeableDur\":0}"));
sdr.setAgent_info("{\"scp\":\"NAVI\",\"stack\":\"CAP2\"}");
sdr.setService_info(("{\"bcap\":\"8090A3\",\"balID\":55969859}"));
sdr.setStarttime(("starttime"));

For JSON mapping I am using ObjectMapper:

public String toJsonString() {
    ObjectMapper mapper = new ObjectMapper();
    try {
        return mapper.writeValueAsString(this);
    } catch (JsonProcessingException e) {
        logger.error(e.getMessage());
    }
    return toString();
}

However, ObjectMapper fails to map Strings, that already contains JSON correctly, and after mapping I get this type of JSON:

{  
   "event_info":""{\"chargeableDur\":0}",
   "location_area":"location_area",
   "agent_info":"{\"scp\":\"NAVI\",\"stack\":\"CAP2\"}",
   "service_info":""{\"bcap\":\"8090A3\",\"balID\":55969859}",
   "starttime":"starttime"
}

I want ObjectMapper to map my object like that:

{  
   "event_info":{  
      "chargeableDur":0
   },
   "location_area":"location_area",
   "agent_info":{  
      "scp":"NAVI",
      "stack":"CAP2"
   },
   "service_info":{  
      "bcap":"8090A3",
      "balID":55969859
   },
   "starttime":"starttime"
}

So you want to JSONify the strings, and let the already JSON'ed as they are? Is there any way to know which one are already json'ed? — Turtle
– Turtle, Commented Aug 2, 2017 at 14:14
mapper.writeValueAsString(this); uses the getX() method of each attributes of your class to put them in a JSon ? If so, just re-define those methods to return them w/o the JSon format when they have one. — Asew
– Asew, Commented Aug 2, 2017 at 14:15
what if you change those strings to be their byte array implementation, and have the deserialize turn them back to strings — Austin_Anderson
– Austin_Anderson, Commented Aug 2, 2017 at 14:17
There is only 3 fields which is already JSON'ed : event_info, agent_info and service_info, but I don't know how to tell object manager, that these fields are already JSON'ed — Marius Barkauskas
– Marius Barkauskas, Commented Aug 2, 2017 at 14:18

Chetan chadha · Accepted Answer · 2017-08-02 14:17:41Z

0

Seems that your json result is stringified. Try to put the string result in separate JSONObject as

return new JSONObject(mapper.writeValueAsString(this)).toString();

answered Aug 2, 2017 at 14:17

Chetan chadha

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