How to parse an JSONObject containing key-value-pairs?

» json » How to parse an JSONObject containing key-value-pairs?

By : user3040371

Date : November 26 2020, 06:18 AM

I hope this helps . damn... sometimes I'm pretty blind after all...
Just use Map :

code :

data class TranslationsDto(
    val translations: Map<String,String>?,
    val hash: String?,
    val length: Int?,
    val language: String?
)

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add key value pairs to jsonobject using jackson

By : user7619883

Date : March 29 2020, 07:55 AM

I hope this helps you . You can do this in several ways.
First, using the Jackson API; let us call node the node you want to modify, newNode the node you want to merge:

code :

final ObjectNode newMetadata = (ObjectNode) newNode.get("metadata");
final ObjectNode metadata = (ObjectNode) node.get("metadata");

metadata.putAll(newMetadata);

final JsonMergePatch patch = JsonMergePatch.fromJson(newNode);
node = patch.apply(node);

Cannot parse jsonobject----"A JSONObject text must begin with '{' at character 1 of "

By : LinF

Date : March 29 2020, 07:55 AM

wish of those help , From the comment:

code :

InputStreamReader isr = new InputStreamReader(new FileInputStream(fileName), "UTF-8");
reader = new BufferedReader(isr);
String tempString = null;
while ((tempString = reader.readLine()) != null){

BufferedReader buf = new BufferedReader(isr);
// remove BOM
buf.mark(1);
if(buf.read() != '\uFEFF') {
  buf.reset();
}
// continue...

What is the best way to parse JsonObject containing just one enormous JsonObject (Gson)

By : Muğalov Ramin

Date : March 29 2020, 07:55 AM

wish helps you What you are doing is:
You load all the Json string into the phone memory (memory issue + long time to load entirely) You create a big JSONObject (same issues) in order to have access to each key.

How to parse a JSONObject inside another JSONObject, using Android Volley for HTTP connection

By : Allyana Thomas

Date : March 29 2020, 07:55 AM

Hope this helps So I am having trouble reading JSON data given by the onResponse method in android volley, this is my GET code. , You can try with this source

code :

requestQueue = Volley.newRequestQueue(this);

    JsonObjectRequest obreq = new JsonObjectRequest(Request.Method.GET, JsonURL,
            // The third parameter Listener overrides the method onResponse() and passes
            //JSONObject as a parameter
            new Response.Listener<JSONObject>() {

                // Takes the response from the JSON request
                @Override
                public void onResponse(JSONObject response) {
                    try {
                        if(response.getString("statusCode").equeal("200")) {
                            User user = new User();

                            JSONObject obj = response.getJSONObject("data");

                            user.setId(obj.getString("Id"));
                            user.setFirstName(obj.getString("firstName"));
                            user.setLastName(obj.getString("lastName"));
                            user.setName(obj.getString("firstName")+" "+obj.getString("lastName"));
                            user.setEmail(obj.getString("email"));
                            user.setCollege(obj.getString("school"));
                            user.setRandom_fact(obj.getString("fact"));
                            user.setAge(obj.getString("age"));
                            user.setMajor(obj.getString("major"));

                            name.setText(user.getName());
                            User.setEmail(user.getEmail());
                            college.setText(user.getCollege());
                            random_fact.setText(user.getRandom_fact());
                            age.setText(user.getAge());
                            major.setText(user.getMajor());
                        }


                    }
                    // Try and catch are included to handle any errors due to JSON
                    catch (JSONException e) {
                        // If an error occurs, this prints the error to the log
                        e.printStackTrace();
                    }
                }
            },
            // The final parameter overrides the method onErrorResponse() and passes VolleyError
            //as a parameter
            new Response.ErrorListener() {
                @Override
                // Handles errors that occur due to Volley
                public void onErrorResponse(VolleyError error) {
                    Log.e("Volley", "Error");
                }
            }
    );
    // Adds the JSON object request "obreq" to the request queue
    requestQueue.add(obreq);
}

Error using jsonobject.count and pairs

By : user1403216

Date : March 29 2020, 07:55 AM

I hope this helps . Your question and comments are contradictory. Your question says you are using Delphi 10.2.3, but your comments say you are using XE5.
In Delphi 10.2.3, use the System.JSON unit. In XE5, use the Data.DBXJson unit.

code :

var
  o: TJSONObject;
  a: TJSONArray;
  book: TJSONObject;
  p: TJSONPair;
  idx: integer;
  idy: integer;
begin
  o := TJSONObject.ParseJSONValue(TEncoding.ASCII.GetBytes(Memo1.Lines.Text),0) as TJSONObject;
  try
    a := o.Get('colors').JsonValue as TJSONArray;
    for idx := 0 to pred(a.Size) do
    begin
      book := a.Get(idx).JsonValue as TJSONObject;
      for idy := 0 to pred(book.Size) do
      begin
        p := book.Get(idy);
        ShowMessage(p.JsonString.ToString + ':' + p.JsonValue.ToString);
      end;
    end;
  finally
    o.Free;
  end;
end;

var
  o: TJSONObject;
  a: TJSONArray;
  book: TJSONObject;
  v: TJSONValue;
  p: TJSONPair;
begin
  o := TJSONObject.ParseJSONValue(TEncoding.ASCII.GetBytes(Memo1.Lines.Text),0) as TJSONObject;
  try
    a := o.Get('colors').JsonValue as TJSONArray;
    for v in a do
    begin
      book := v as TJSONObject;
      for p in book do
      begin
        ShowMessage(p.JsonString.ToString + ':' + p.JsonValue.ToString);
      end;
    end;
  finally
    o.Free;
  end;
end;