Question 109631 in Json Question posted in
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How to remove extra escaping quote characters of JsonObject created through Javax

I use javax to create JsonObject and JsonArray from my List<String> and I have a list of Json objects that i want to put in a JsonObject through a JsonArray

    JsonArrayBuilder jsonArray = Json.createArrayBuilder(); 
    for (String Obj : listOfJsonDfObjects) 
       jsonArray.add(summaryObj);   //{"a":"b"},{"c":"d"}
   
    // this line introduces extra escaping quotes like this {""a"":""b""},{""c"":""d""}
    javax.json.JsonObject data = Json.createObjectBuilder()
       .add("data", jsonArray.build()).build();

How to avoid these extra quotes escaping characters?
Thanks

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2

Answers


  1. 0

    Using Gson

        Gson gson = new Gson();
    String json = gson.toJson(listOfJsonDfObjects);        
    //check json
    System.out.println(json);        
    json = json.replaceAll("\\", "");
    json = json.replaceAll(""\{", "{");
    json = json.replaceAll("\}"", "}");        
    //valid json now
    System.out.println(json);

    A more secure way (to avoid altering original data)

        //concatenate objects in list with comma
    String json = String.join(",", listOfJsonDfObjects);
    //convert to pseudo array
    json = "[" + json + "]"; 
    //convert pseudo json array to pseudo json object
    json = "{"data":" + json + "}";
    //cast to json object
    JsonObject jsonObject = new Gson().fromJson(json, JsonObject.class);                       
    System.out.println(jsonObject);
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  2. 0

    You say you have a list of JSON objects, but you really have a list of JSON-formatted strings. To add them to a JsonArray, you need to parse each one into the JSON object model:

    public class JsonTest {
    public static void main(String[] args) {
        List<String> listOfJsonDfObjects = List.of(
                "{"a":"b"}",
                "{"c":"d"}"
        );
        JsonArrayBuilder jsonArray = Json.createArrayBuilder();
        for (String summaryObj : listOfJsonDfObjects) {
            JsonReader parser = Json.createReader(new StringReader(summaryObj));
            jsonArray.add(parser.readObject());
        }

        JsonObject data = Json.createObjectBuilder()
                .add("data", jsonArray.build()).build();

        System.out.println(data); // {"data":[{"a":"b"},{"c":"d"}]}
    }
}
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