CODEWITHSUNDEEP
javaandroidjson
Andrei Zhukouski
Andrei Zhukouski

Reputation: 3506

What is the best way to combine (merge) 2 JSONObjects?

What is the best way to combine (merge) two JSONObjects?

JSONObject o1 = {
    "one": "1",
    "two": "2",
    "three": "3"
}
JSONObject o2 = {
        "four": "4",
        "five": "5",
        "six": "6"
    }

And result of combining o1 and o2 must be 

JSONObject result = {
        "one": "1",
        "two": "2",
        "three": "3",
        "four": "4",
        "five": "5",
        "six": "6"
    }

Upvotes: 17

Views: 31587

Answers (5)

Abhishek singh
Abhishek singh

Reputation: 415

Merge JsonObject(gson)- 

JsonObject data = new JsonObject();
data = receivedJsoData.get("details").getAsJsonObject();

JsonObject data2 = new JsonObject();
data2 = receivedJsoData1.get("details").getAsJsonObject();

JsonObject mergedData = new JsonObject();

Set<Map.Entry<String, JsonElement>> entries = data1.entrySet();  //will return members of your object
for (Map.Entry<String, JsonElement> entry : entries) {
    mergedData.add(entry.getKey(), entry.getValue());
}
Set<Map.Entry<String, JsonElement>> entries1 = data2.entrySet();  //will return members of your object
for (Map.Entry<String, JsonElement> entry : entries1) {
    mergedData.add(entry.getKey(), entry.getValue());
}

Upvotes: 0

tainy
tainy

Reputation: 951

How about this:

            Iterator iterator = json2.keys();
            while(iterator.hasNext()){
                String key = iterator.next().toString();
                json1.put(key,map.optJSONObject(key));
            }

Upvotes: 0

Vito Gentile
Vito Gentile

Reputation: 14426

I have your same problem: I can't find the putAll method (and it isn't listed in the official reference page).

So, I don't know if this is the best solution, but surely it works quite well:

//I assume that your two JSONObjects are o1 and o2
JSONObject mergedObj = new JSONObject();

Iterator i1 = o1.keys();
Iterator i2 = o2.keys();
String tmp_key;
while(i1.hasNext()) {
    tmp_key = (String) i1.next();
    mergedObj.put(tmp_key, o1.get(tmp_key));
}
while(i2.hasNext()) {
    tmp_key = (String) i2.next();
    mergedObj.put(tmp_key, o2.get(tmp_key));
}

Now, the merged JSONObject is stored in mergedObj

Upvotes: 14

Nirav Tukadiya
Nirav Tukadiya

Reputation: 3427

json objects to be merge in that new json object like this. 

    JSONObject jObj = new JSONObject();
    jObj.put("one", "1");
    jObj.put("two", "2");
    JSONObject jObj2 = new JSONObject();
    jObj2.put("three", "3");
    jObj2.put("four", "4");


    JSONParser p = new JSONParser();
    net.minidev.json.JSONObject o1 = (net.minidev.json.JSONObject) p
                        .parse(jObj.toString());
    net.minidev.json.JSONObject o2 = (net.minidev.json.JSONObject) p
                        .parse(jObj2.toString());

    o1.merge(o2);

    Log.print(o1.toJSONString());

now o1 will be the merged json object. you will get the output like this ::

{"three":"3","two":"2","four":"4","one":"1"}

please refer this link and download the smartjson library ..here is the link http://code.google.com/p/json-smart/wiki/MergeSample

hope it will help.

Upvotes: 3

Ankur
Ankur

Reputation: 140

Try this.. hope it helps

JSONObject result = new JSONObject();
result.putAll(o1);
result.putAll(O2);

Upvotes: -1

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