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javax.json.JSONObject.put(String,String) not working anymore

The solution presented in Convert a string list/set to json objects in java seems not to work any more.

In version 1.1.4 of the javax.json JSONObject is now a subclass of the typed Map<String, JsonValue> .

Hence

    jsonObject.put("key", "value")

leads to an error, because put expects now an Json Object as the second object.

However, I did not find an easy way to convert a simple String into a JsonValue.

What is the best way to create a simple JsonValue?

Wallenstein

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2

Answers


  1. 0

    javax.json JSONObject extends Map<String, JsonValue>.

    So, you need to convert your String into a JsonValue.

    Try this:

    JsonObject jsonObject = Json.createObjectBuilder()
        .add("key", "yourValue")  // "yourValue" will be handled as a JsonValue
        .build();
System.out.println(jsonObject);
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  2. 0

    You are wrong in that javax.json.JsonObject has changed, this is how it always worked in its immutable way. See here for more reference: https://stackoverflow.com/a/26346341/471160, this is from 2014.

    Since you reference a link to SO question about jackson you probably mixed code from two different libraries. If you want code like jsonObject.put("key", "value") to work then use jackson:

        // com.fasterxml.jackson.core:jackson-core:2.13.3
    ObjectMapper mapper = new ObjectMapper();
    ObjectNode jsonObject2 = mapper.createObjectNode();
    jsonObject2.put("key", "value");
    System.out.println(jsonObject2);

    or org.json

        // org.json:json:20230227
    JSONObject jsonObject = new JSONObject();
    jsonObject.put("key", "value");
    System.out.println(jsonObject);
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