CODEWITHSUNDEEP
javascriptangularjsjsonarraybuffer
Vishnu
Vishnu

Reputation: 475

Convert ArrayBuffer response to JSON

Here I am calling a GetFile , getting response as ArrayBuffer{} object, In network Tab response is {"errors":["photoProof Image is not available in the system"]}, if I do response.errors=undefined.

$scope.getDocuments = function(){
  Myservice.downLoadDocument('photo', $scope.user.mobileNo).
    then(function(response){
     })
}

If I Do this, getting below this value in Network Tab.

 response.byteLength = 64

how do I convert this ArrayBuffer into proper JSON format?

Upvotes: 10

Views: 35467

Answers (5)

Bence Szabó
Bence Szabó

Reputation: 143

You can use TextDecoder:

try {
  parsedJson = JSON.parse(new TextDecoder().decode(response as ArrayBuffer));
} catch (e) {
  parsedJson = {};
}

In my case the request is waiting for an ArrayBuffer response, but if an error occours on the backend, I get a JSON object containing the error. I check if the response is an error with this code.

The try-catch block is needed because if the ArrayBuffer is not a json, then the JSON.parse() method will throw an error.

Upvotes: 11

belem
belem

Reputation: 399

This wokrs for me :

String.fromCharCode.apply(null, new Uint8Array(replaceThisByYourData))

Upvotes: 7

Luis Salazar
Luis Salazar

Reputation: 339

You can use:

Buffer.from(yourArrayBufferValue).toJSON();

Although this answer is a little bit late, I hope it helps someone

Upvotes: 4

Tiha
Tiha

Reputation: 628

var jsonResult = JSON.parse(JSON.stringify(response));

will do wonders.

Upvotes: 2

LangZhai
LangZhai

Reputation: 31

Maby you can use json-bufferify. It's a module to help you convert between JSON and ArrayBuffer, and you can run it in both Node.js and browser.

Upvotes: 3

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