I have a JSONObject
full of JSONobject
s, and I need to extract each of those into a new JSONObject
so I can manipulate each of them individually, but I don't really know how to do it. My code is like this:
public void loadBodies(InputStream in) {
JSONObject jsonInput= new JSONObject(new JSONTokener(in));
JSONObject jo2 = jsonInput.getJSONObject("bodies"); //probably incorrect
for(JSonObject j: jo2) b.create(j); //i need to apply the create method to all the JSONObjects
imagine the JSON like this
{'bodies': [
{
'total': 142250.0,
'_id': 'BC'
},
{
'total': 210.88999999999996,
'_id': 'USD'
},
{
'total': 1065600.0,
'_id': 'TK'
}
]
}
I need to extract all the JSONObject
s under the key bodies
into a new set of JSONObjects
, so I can operate with them. So basically, extract them in a loop, but I don't know how to.
According to your example, bodies
is a JSON array. So use JSONArray
of the org.json:json
library in order to iterate over the array's content:
String json = "{\"bodies\": [{\"total\": 142250.0, \"_id\": \"BC\"}]}";
JSONObject jsonInput = new JSONObject(new JSONTokener(new StringReader(json)));
JSONArray array = jsonInput.getJSONArray("bodies");
for (int i = 0; i < array.length(); i++) {
JSONObject obj = array.getJSONObject(i);
// implement here your logic on obj
}
You can do like this and manipulate each value according to your requirement . This method calls recursively every time when it finds any JSONObject or JSONArray inside object. handleValue() method for manipulating value for specific key.
public void handleJSON(Object input, Map<String,Object> result ){
if (input instanceof JSONObject) {
List < String > keys = new ArrayList < > (((JSONObject) input).keySet());
for (String key: keys) {
if (!(((JSONObject) input).get(key) instanceof JSONArray))
if (((JSONObject) input).get(key) instanceof JSONObject) {
handleJSONObject(((JSONObject) input).get(key), map);
} else {
Object value = ((JSONObject) input).get(key);
((JSONObject) input).put(key, handleValue(value, map));
}
else
handleJSONObject(new JSONArray(((JSONObject) input).get(key).toString()), map);
}
}
if (input instanceof JSONArray) {
for (int i = 0; i < ((JSONArray) input).length(); i++) {
JSONObject jsonObject = ((JSONArray) input).getJSONObject(i);
handleJSONObject(jsonObject, map);
}
}
}
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