How to validate JSON having multiple root elements

Question

I am having a ccode, which bulids jsonfile in the below format.

{"swap":1,"si":11},{"system":1,host:"new"},{"Cpu":1}

If I validate this jsonfile data i get an error as:

Parse error on line 4:

...": 1, "si": 11},{ "system": 1, ---------------------^ Expecting 'EOF'

How to resolve this issue?

possible duplicate of [How to read a JSON file containing multiple root elements?](http://stackoverflow.com/questions/11639886/how-to-read-a-json-file-containing-multiple-root-elements) — F. Stephen Q, Sep 07 '15 at 17:28
Could you post some of your code? Also, having multiple root elements is not valid JSON, so parsing should break — F. Stephen Q, Sep 07 '15 at 17:29
In JSON every key is double quoted. Your json is missing double quotes at host key. { "system": 1, "host": "new" } — Danny Fardy Jhonston Bermúdez, Sep 07 '15 at 17:29

score 1 · Answer 1 · edited Nov 18 '17 at 02:38

1

Wrap those jsonObjects in to an JsonArray while building. Then in java iterate through the jsonarray.

edited Nov 18 '17 at 02:38

Danny Fardy Jhonston Bermúdez

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answered Sep 07 '15 at 17:27

Raman Shrivastava

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Danny Fardy Jhonston Bermúdez · Answer 2 · 2017-11-18T02:38:46.103

1

In jsonevery key is double quoted "key". Your jsonis missing double quotes at host key. Make sure you're writing a well-formed json.

{ "system": 1, "host": "new" }
               ^    ^

edited Nov 18 '17 at 02:38

answered Sep 07 '15 at 17:32

Danny Fardy Jhonston Bermúdez

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score 1 · Answer 3 · answered May 29 '18 at 12:41

1

am not a expert in JSON but i think you want to change a JSON like array value

[{"swap":1,"si":11},{"system":1,host:"new"},{"Cpu":1}]

insted of

{"swap":1,"si":11},{"system":1,host:"new"},{"Cpu":1}

answered May 29 '18 at 12:41

Gowtham Sooryaraj

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score 0 · Answer 4 · edited Jul 01 '20 at 19:18

You can also use this custom function even if you have complex objects.

static getParsedJson(jsonString) {
    const parsedJsonArr = [];
    let tempStr = '';
    let isObjStartFound = false;
    for (let i = 0; i < jsonString.length; i += 1) {
        if (isObjStartFound) {
            tempStr += jsonString[i];
            if (jsonString[i] === '}') {
                try {
                    const obj = JSON.parse(tempStr);
                    parsedJsonArr.push(obj);
                    tempStr = '';
                    isObjStartFound = false;
                } catch (err) {
                    // console.log("not a valid JSON object");
                }
            }
        }
        if (!isObjStartFound && jsonString[i] === '{') {
            tempStr += jsonString[i];
            isObjStartFound = true;
        }
    }
    return parsedJsonArr;
}

How to validate JSON having multiple root elements

4 Answers4