How to parse JSON String to String in Java

Question

I have a JSON string, how can I parse it and just get the valueString in java?

{
"resourceType": "Bundle",
"id": "0",
"entry": [
    {
        "resource": {
            "resourceType": "Basic",
            "extension": [
                {
                    "url": "http://ith.sahra.com/extensions#uploadid",
                    "valueString": "1589355494289_655"
                }
            ]
        }
    }
]

}

This is my code, I tried to call extension I got null but I got response while calling entry

 public static String ParsingValue(String valuepass) throws org.json.simple.parser.ParseException{
    Object obj = new JSONParser().parse(valuepass);
    JSONObject jo = (JSONObject) obj;
    //JSONArray msg = (JSONArray) jo.getClass();
    JSONArray result = (JSONArray) jo.get("entry");
}

See if this helps For file : https://stackoverflow.com/a/61766498/11537839 — ProGamer, May 13 '20 at 08:33
`gson.fromJSON` ? Did you try anything before posting this question? — BeardAspirant, May 13 '20 at 08:34
of course, I did some research, I try to get extension array but I got the null result, the only array I can get is an entry — ezra putra, May 13 '20 at 08:46
i'm asking this because i can get 1 array but array in array i can't — ezra putra, May 13 '20 at 08:48
Then please show us your code. The code where you are getting *"the null result, the only array I can get is an entry"*. Because your current question *reads* like you are just asking us to write code for you. — Stephen C, May 13 '20 at 08:55
Does this answer your question? [How to parse JSON in Java](https://stackoverflow.com/questions/2591098/how-to-parse-json-in-java) — M.A.K. Ripon, May 13 '20 at 11:02
thankyou this is helping me to parse it, thank you, everyone, for your kindness — ezra putra, May 13 '20 at 23:26

score 0 · Answer 1 · answered May 13 '20 at 10:13

0

The easiest way to parse a string through Jackson parser

Eg:

ObjectMapper mapper = new ObjectMapper();
String json = "{\"name\":\"anshul\",\"age\":29}";
Map<String, Object> map = mapper.readValue(json, Map.class);

Try this, it should solve your problem.

answered May 13 '20 at 10:13

Anshul Sharma

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thankyou so much, i already solved the problem with the reference of your code – ezra putra May 13 '20 at 23:25
One more point to note here is, if you have a POJO and JSON string is structured as per POJO you can directly parse it in a POJO. eg: ``` ObjectMapper mapper = new ObjectMapper(); String json = "{\"name\":\"anshul\",\"age\":29}"; User user = mapper.readValue(json, User.class); ``` – Anshul Sharma May 14 '20 at 01:10

How to parse JSON String to String in Java

1 Answers1