I am struggling to fit in a jsonArray inside a json object (through java code).. please help me out.
My Input JsonObject is :
{
"products":{
"productId":"712161780324",
"imageURL":"http:example.com/imageResource.jpg",
"internalItemCode":"N08792 8W"
}
}
I will have to read "imageURL" property from this JSONObject and append its variants to the same json object (image variants will be in SortedSet data structure).
Sample O/P 1 :
{
"products":{
"productId":"712161780324",
"imageURL":"http:example.com/imageResource.jpg",
"internalItemCode":"N08792 8W",
"variants":[
"http:example.com/imageResource_variant1.jpg",
"http:example.com/imageResource_variant2.jpg"
]
}
}
Sample O/P 2 :
{
"products":{
"productId":"712161780324",
"imageURL":"http:example.com/imageResource.jpg",
"internalItemCode":"N08792 8W",
"variants":[
{
"url" : "http:example.com/imageResource_variant1.jpg"
},
{
"url" : "http:example.com/imageResource_variant2.jpg"
}
]
}
}
The logic i tried to get sample output 2 is some what like below,
// productDetail is the give input JSONObject
JSONObject product = productDetail.optJSONObject("products");
SortedSet<String> imageUrls = new TreeSet<>();
imageUrls.add("http:example.com/imageResource_variant1.jpg");
imageUrls.add("http:example.com/imageResource_variant2.jpg");
Iterator<String> itr = imageUrls.iterator();
JSONArray imageUrlsArray = new JSONArray();
while (itr.hasNext()) {
JSONObject imageUrlObj = new JSONObject();
imageUrlObj.put("url", itr.next());
imageUrlsArray.put(imageUrlObj);
}
product.append("variants", imageUrlsArray);
When i tried to print the productDetail JSON object after executing above logic
System.out.println(productDetail.toString());
I observed the following output :
{
"products":{
"productId":"712161780324",
"imageURL":"http:example.com/imageResource.jpg",
"internalItemCode":"N08792 8W",
"variants":[
[
{
"url" : "http:example.com/imageResource_variant1.jpg"
},
{
"url" : "http:example.com/imageResource_variant2.jpg"
}
]
]
}
}
If you notice, It's coming up like Array of arrays (extra [ ] for "variants"),
Please help me in understanding Where my logic is going wrong.
And also, Please help me getting the First sample out put.
Appreciate quick response..
Thanks,
Rohit.
First sample can be archivable as simple as this:
JSONObject product = productDetail.optJSONObject("products");
JSONArray imageUrlsArray = new JSONArray();
imageUrlsArray.put(0, "http:example.com/imageResource_variant1.jpg");
imageUrlsArray.put(1, "http:example.com/imageResource_variant2.jpg");
product.append("variants", imageUrlsArray);
Try using put instead of append:
JSONObject product = productDetail.optJSONObject("products");
SortedSet<String> imageUrls = new TreeSet<>();
imageUrls.add("http:example.com/imageResource_variant1.jpg");
imageUrls.add("http:example.com/imageResource_variant2.jpg");
Iterator<String> itr = imageUrls.iterator();
JSONArray imageUrlsArray = new JSONArray();
while (itr.hasNext()) {
JSONObject imageUrlObj = new JSONObject();
imageUrlObj.put("url", itr.next());
imageUrlsArray.put(imageUrlObj);
}
-product.append("variants", imageUrlsArray);
+product.put("variants", imageUrlsArray);
From the docs:
Append values to the array under a key. If the key does not exist in the JSONObject, then the key is put in the JSONObject with its value being a JSONArray containing the value parameter. If the key was already associated with a JSONArray, then the value parameter is appended to it.
Related
I have JsonElement like this:
{
"76800769": {
"prosjekLat": 45.784661646364,
"prosjekLong": 15.947804310909,
"brojCelija": 11
},
"76800772": {
"prosjekLat": 45.7847808175,
"prosjekLong": 15.9477082775,
"brojCelija": 4
},
"2946694": {
"prosjekLat": 45.78475167,
"prosjekLong": 15.9475975,
"brojCelija": 1
},
"76829440": {
"prosjekLat": 45.784726386,
"prosjekLong": 15.947961766,
"brojCelija": 5
}
}
I also create Model:
public class AddMarker {
int cellId;
double longitude;
double latitude;
}
I want to read JSON file and put values to List<AddMarker>.
I'm trying with this:
JsonElement data = response.body();
JsonObject obj = data.getAsJsonObject();
JsonArray arr = obj.getAsJsonArray();
but I'm getting an err: "This is not a JSON Array."
Your JSON is not an array.
Json Array syntax dictates that in order to have an array, your object must be formatted as:
[
{
...
},
{
...
},
...
{
...
}
]
Right now you have the outer square brackets ([]) as curly braces ({}). Change it to square brackets and your code should run correctly.
You're trying to make a array from a single object: JsonArray arr = obj.getAsJsonArray(), where obj is for exemple just this :
"76829440": {
"prosjekLat": 45.784726386,
"prosjekLong": 15.947961766,
"brojCelija": 5
}
you need to get the body from the response and make an array with all these objects, not from a single one
You can use this:
JsonObject json = new JsonObject(data);
String str1 = json.getString("76800769");
JsonObject json2 = new JsonObject(str1);
float str11 = json2.getFloat("prosjekLat");
Using org.json liberary, you can read the element as follows:
JSONObject obj = new JSONObject("your json element");
JSONObject obj2 = (JSONObject) obj.get("76800769");
System.out.println(obj2.get("brojCelija"));
System.out.println(obj2.get("prosjekLat"));
System.out.println(obj2.get("prosjekLong"));
which gives below output:
11
45.784661646364
15.947804310909
I need to convert JSON Object to array. In php just use array_values( $json ).
I solve my problem using this:
json_encode(array_values($izracunatProsjek), true);
I have to make a file in JSON format which must look like the following:
xyz.json
[
{
"imagelist": "/oracle/public/oel6",
"label": "test_higgs",
"shape": "small",
"name" : "/Compute-computecli1/computeadmin/",
"networking" : {
"eth0" : {
"ipnetwork" : "/Compute-computecli1/computeadmin/ipnet"
}
}
}
]
The array should be added in the JSON file without {}, and these curly brackets have to come inside the JSON array.
The code for
{
instances:[
{
"imagelist": "/oracle/public/oel6",
"label": "test_higgs",
"shape": "small",
"name" : "/Compute-computecli1/computeadmin/",
"networking" : {
"eth0" : {
"ipnetwork" : "/Compute-computecli1/computeadmin/ipnet"
}
}
}
]
}
is:
This code adds json array as a value to "instance" key, but I want to add json array without json key.
JsonObject ipnetwork = new JsonObject();
ipnetwork.addProperty("ipnetwork", ipNetworkName);
JsonObject interface_type = new JsonObject();
interface_type.add("eth0", ipnetwork);
JsonObject instance = new JsonObject();
instance.addProperty(imageListCmdText, "/oracle/public/oel6");
instance.addProperty("label","test_higgs");
instance.addProperty("shape","small");
instance.addProperty("name","/"+customerName);
instance.add("networking",interface_type);
JsonArray instances = new JsonArray();
instances.add(instance);
JsonObject launch_plan = new JsonObject();
launch_plan.add("instances", instances);
Please tell how does this code has to be changed in order to get the output asked above.
JsonObject launch_plan = new JsonObject();
launch_plan.add("instances", instances);
These two lines create the JSON object with curly braces. You don't need them, you can just remove them and use instances, which doesn't have curly braces as it's a json array and not a json object.
JsonObject ipnetwork = new JsonObject();
ipnetwork.addProperty("ipnetwork", ipNetworkName);
JsonObject interface_type = new JsonObject();
interface_type.add("eth0", ipnetwork);
JsonObject instance = new JsonObject();
instance.addProperty(imageListCmdText, "/oracle/public/oel6");
instance.addProperty("label","test_higgs");
instance.addProperty("shape","small");
instance.addProperty("name","/"+customerName);
instance.add("networking",interface_type);
JsonArray instances = new JsonArray();
instances.add(instance);
// not needed
//JsonObject launch_plan = new JsonObject();
//launch_plan.add("instances", instances);
I have a sample JSON as below. I need to get the individual fields like ASIdentifer and ExternalIdentifer. I have stored this JSON data in a string.
Using GoogleJson as the module(ggson)
JSON data:
{
"DeviceCommon": {
"ASIdentifier": "123",
"DatadeliveyMechanism": "notify",
"MobileOriginatorCallbackReference": {
"url": "http://application.example.com/inbound/notifications/modatanotification/"
},
"AccessiblityCallbackReference": {
"url": "http://application.example.com/inbound/notifications/accessibilitystatusnotification"
}
},
"DeviceList": [{
"ExternalIdentifer": "123456#mydomain.com",
"msisdn": "123456",
"senderName": "Device1",
"MobileOriginatorCallbackReference": {
"notifyURL": "http://application.example.com/inbound/notifications/modatanotification/"
},
"ConfigurationResultCallbackReference": {
"notifyURL": "http://application.example.com/inbound/notifications/configurationResult"
},
"ASreferenceID": "AS000001",
"NIDDduration": "1d"
}]
}
I created the POJO classes and parsed the data using below code
data = new Gson().fromJson(new FileReader("/home/raj/apache-tomcat-8.0.3/webapps/file.json"), Data.class);
System.out.println(data);
Output:
Data{
deviceCommon=DeviceCommon{
asIdentifier='123'
datadeliveyMechanism='notify'
mobileOriginatorCallbackReference=http://application.example.com/inbound/notifications/modatanotification/
accessiblityCallbackReference=http://application.example.com/inbound/notifications/accessibilitystatusnotification
}
deviceList=[DeviceListEntry{
externalIdentifer='123456#mydomain.com'
msisdn='123456'
senderName='Device1'
mobileOriginatorCallbackReference=http://application.example.com/inbound/notifications/modatanotification/
configurationResultCallbackReference=http://application.example.com/inbound/notifications/configurationResult
asReferenceID='AS000001'
nidDduration='1d'
}]
}
String jsonInString = gson.toJson(data);
System.out.println("String is"+ jsonInString);
Output:
String is{"DeviceCommon":{"ASIdentifier":"123","DatadeliveyMechanism":"notify","MobileOriginatorCallbackReference":{"url":"http://application.example.com/inbound/notifications/modatanotification/"},"AccessiblityCallbackReference":{"url":"http://application.example.com/inbound/notifications/accessibilitystatusnotification"}},"DeviceList":[{"ExternalIdentifer":"123456#mydomain.com","msisdn":"123456","senderName":"Device1","MobileOriginatorCallbackReference":{"notifyURL":"http://application.example.com/inbound/notifications/modatanotification/"},"ConfigurationResultCallbackReference":{"notifyURL":"http://application.example.com/inbound/notifications/configurationResult"},"ASreferenceID":"AS000001","NIDDduration":"1d"}]}
I need to parse this JSON string to get individual fields like ExternalIdentifier and ASIdentifier.
I tried something like this but it is not working.
JsonObject jobj = new Gson().fromJson(jsonInString, JsonObject.class);
String result = jobj.get("ASIdentifier").toString();
System.out.println("value is"+ result);
Note: ExternalIdentifier is within the array, so I need to loop through the array to find it.
Can you please tell me what I'm doing wrong?
Possible solution:
String result = jobj.get("DeviceCommon").getAsJsonObject().get("ASIdentifier").getAsString();
System.out.println("ASIdentifier: "+ result);
JsonArray jsonArray = jobj.get("DeviceList").getAsJsonArray();
for (JsonElement device : jsonArray ) {
result = device.getAsJsonObject().get("ExternalIdentifer").getAsString();
System.out.println("ExternalIdentifer: "+ result);
}
Output:
ASIdentifier: 123
ExternalIdentifer: 123456#mydomain.com
public static void printJson(JsonElement jsonElement,String key) {
// Check whether jsonElement is JsonObject or not
if (jsonElement.isJsonObject()) {
Set<Entry<String, JsonElement>> ens = ((JsonObject) jsonElement).entrySet();
if (ens != null) {
// Iterate JSON Elements with Key values
for (Entry<String, JsonElement> en : ens) {
// System.out.println("##key is"+en.getKey() + " : ");
printJson(en.getValue(), en.getKey());
// System.out.println(en.getValue().getAsString());
// System.out.println(jsonElement.getAsString());
}
}
}
// Check whether jsonElement is Primitive or not
else if (jsonElement.isJsonPrimitive()) {
// print value as String
System.out.println("###key is"+key);
System.out.println("### value is"+jsonElement.getAsString());
}
else if (jsonElement.isJsonArray()) {
JsonArray jarr = jsonElement.getAsJsonArray();
// Iterate JSON Array to JSON Elements
System.out.println("\n###Array size is"+ jarr.size());
for (JsonElement je : jarr) {
printJson(je,key);
}
}
}
Is there an API/tool available for extracting specific attributes(json subset) of a json in java, similar to apache-commons beanutils copy?
For example I have the following JSON
{
"fixed":[
{
"b":"some value",
"c":"some value",
"d":"some value",
"e":"some value",
"f":"some value"
},
{
"b":"value",
"c":"value",
"d":"value",
"e":"value",
"f":"value"
}
]
}
I would like to have the following json
{
"fixed":[
{
"b":"some value",
"e":"some value",
"f":"some value"
},
{
"b":"value",
"e":"value",
"f":"value"
}
]
}
I came up the following method, but not sure if its the right approach
public JSONObject parseJSON(JSONObject data,List<String> subset){
JSONArray fixedArray = (JSONArray) data.get("fixed");
JSONObject resObj = new JSONObject();
JSONArray resArray = new JSONArray();
for(int i=0;i<fixedArray.size();i++){
JSONObject element = (JSONObject) fixedArray.get(i);
JSONObject resElement = new JSONObject();
for(String s:subset){
resElement.put(s, element.get(s));
}
resArray.add(resElement);
}
return resObj.put("fixed", resArray);
}
I had a look at this SO question, but wasn't helpful for this topic.
https://docs.oracle.com/javase/tutorial/jaxb/intro/arch.html you can also create you own pojo class from JAXB ,if you want.
I want to have a java list for all elements which are in the "in" or "out" element.
My json string:
{"in":[
{"id":4,"ip":"192.168.0.20","pinSysNo":4,"pinSysName":"pg6","folderName":"gpio4_pg6","alias":"d","direction":"digital_in"},
{"id":3,"ip":"192.168.0.20","pinSysNo":3,"pinSysName":"pb18","folderName":"gpio3_pb18","alias":"c","direction":"digital_out"}
],
"out":[
{"id":1,"ip":"192.168.0.20","pinSysNo":1,"pinSysName":"pg3","folderName":"gpio1_pg3","alias":"a","direction":"digital_in"},
{"id":2,"ip":"192.168.0.20","pinSysNo":2,"pinSysName":"pb16","folderName":"gpio2_pb16","alias":"b","direction":"digital_in"}
]
}:""
Until now I did this way:
String message = json.findPath("in").textValue();
But this way can only access to the first hierarchy.
My json example show two elements in the "in" element. How I can get a list of these internal "in" elements?
You could use the library JSONSimple in order to parse your JSON data by this code:
JSONParser parser = new JSONParser();
JSONObject o = (JSONObject) parser.parse(yourJsonAsString);
JSONArray ins = (JSONArray) o.get("in");
JSONArray outs = (JSONArray) o.get("out");
String firstIpAddress = ((JSONObject) ins.get(0)).get("ip").toString();
Thank you for your help. I found an other way to find all sub elements.
Json example:
{"in":[
{"id":4,"ip":"192.168.0.20","pinSysNo":4,"pinSysName":"pg6","folderName":"gpio4_pg6","alias":"d","direction":"digital_in"},
{"id":3,"ip":"192.168.0.20","pinSysNo":3,"pinSysName":"pb18","folderName":"gpio3_pb18","alias":"c","direction":"digital_out"}
],
"out":[
{"id":1,"ip":"192.168.0.20","pinSysNo":1,"pinSysName":"pg3","folderName":"gpio1_pg3","alias":"a","direction":"digital_in"}
,{"id":2,"ip":"192.168.0.20","pinSysNo":2,"pinSysName":"pb16","folderName":"gpio2_pb16","alias":"b","direction":"digital_in"}
]
}
My solution:
JsonNode json = request().body().asJson();
Logger.info("JSON : " + json.findPath("in").findPath("id"));
Logger.info("JSON : " + json.findValues("in"));
List<JsonNode> ins = new org.json.simple.JSONArray();
ins = json.findValues("in");
for (final JsonNode objNode : ins) {
for (final JsonNode element : objNode) {
Logger.info(">>>>>" + element.findPath("id"));
//create my object for database
}
}
Now I can create my Object for the database.
#eztam thank you