How to pass a JSON array as a parameter in URL

I know this could be a later post, but, for new visitors I will share my solution, as the OP was asking for a way to pass a JSON object via GET (not POST as suggested in other answers).

1. Take the JSON object and convert it to string (JSON.stringify)
2. Take the string and encode it in Base64 (you can find some useful info on this here
3. Append it to the URL and make the GET call
4. Reverse the process. decode and parse it into an object

I have used this in some cases where I only can do GET calls and it works. Also, this solution is practically cross language.

I know this is old, but if anyone else wants to know why they get incomplete json like above is because the ampersand & is a special character in URLs used to separate parameters.
In your data there is an ampersand in R&R. So the acc parameter ends when it reaches the ampersand character.

That's why you are getting chopped data. The solution is either url encode the data or send as POST like the accepted solution suggests.

& is a keyword for the next parameter like this ur?param1=1&param2=2

so effectively you send a second param named R". You should urlencode your string. Isn't POST an option?

You can pass your json Input as a POST request along with authorization header in this way

public static JSONObject getHttpConn(String json){
        JSONObject jsonObject=null;
        try {
            HttpPost httpPost=new HttpPost("http://google.com/");
            org.apache.http.client.HttpClient client = HttpClientBuilder.create().build();
            StringEntity stringEntity=new StringEntity("d="+json);

            httpPost.addHeader("content-type", "application/x-www-form-urlencoded");
            String authorization="test:test@123";
            String encodedAuth = "Basic " + Base64.encode(authorization.getBytes());        
            httpPost.addHeader("Authorization", security.get("Authorization"));
            httpPost.setEntity(stringEntity);
            HttpResponse reponse=client.execute(httpPost);
            InputStream inputStream=reponse.getEntity().getContent();
            String jsonResponse=IOUtils.toString(inputStream);
            jsonObject=JSONObject.fromObject(jsonResponse);
            } catch (UnsupportedEncodingException e) {

            e.printStackTrace();
        } catch (ClientProtocolException e) {

            e.printStackTrace();
        } catch (IOException e) {

            e.printStackTrace();
        }
        return jsonObject;


    }

This Method will return a json response.In same way you can use GET method

I encountered the same need and make a universal solution (node+browser) that works with the Next.js framework, for instance.

It even works with circular dependencies (thanks to json-stringify-safe).

Although, I also built a serializer on top of it to remove unnecessary data (because it's not recommended to use a url longer than 2k chars, see What is the maximum length of a URL in different browsers?)

import StringifySafe from 'json-stringify-safe';

export const encodeQueryParameter = (data: object): string => {
  return encodeURIComponent(StringifySafe(data)); // Use StringifySafe to avoid crash on circular dependencies
};

export const decodeQueryParameter = (query: string): object => {
  return JSON.parse(decodeURIComponent(query));
};

And the unit tests (jest):

import { decodeQueryParameter, encodeQueryParameter } from './url';

export const data = {
  'organisation': {
    'logo': {
      'id': 'ck2xjm2oj9lr60b32c6l465vx',
      'linkUrl': null,
      'linkTarget': '_blank',
      'classes': null,
      'style': null,
      'defaultTransformations': { 'width': 200, 'height': 200, '__typename': 'AssetTransformations' },
      'mimeType': 'image/png',
      '__typename': 'Asset',
    },
    'theme': {
      'primaryColor': '#1134e6',
      'primaryAltColor': '#203a51',
      'secondaryColor': 'white',
      'font': 'neuzeit-grotesk',
      '__typename': 'Theme',
      'primaryColorG1': '#ffffff',
    },
  },
};
export const encodedData = '%7B%22organisation%22%3A%7B%22logo%22%3A%7B%22id%22%3A%22ck2xjm2oj9lr60b32c6l465vx%22%2C%22linkUrl%22%3Anull%2C%22linkTarget%22%3A%22_blank%22%2C%22classes%22%3Anull%2C%22style%22%3Anull%2C%22defaultTransformations%22%3A%7B%22width%22%3A200%2C%22height%22%3A200%2C%22__typename%22%3A%22AssetTransformations%22%7D%2C%22mimeType%22%3A%22image%2Fpng%22%2C%22__typename%22%3A%22Asset%22%7D%2C%22theme%22%3A%7B%22primaryColor%22%3A%22%231134e6%22%2C%22primaryAltColor%22%3A%22%23203a51%22%2C%22secondaryColor%22%3A%22white%22%2C%22font%22%3A%22neuzeit-grotesk%22%2C%22__typename%22%3A%22Theme%22%2C%22primaryColorG1%22%3A%22%23ffffff%22%7D%7D%7D';

describe(`utils/url.ts`, () => {
  describe(`encodeQueryParameter`, () => {
    test(`should encode a JS object into a url-compatible string`, async () => {
      expect(encodeQueryParameter(data)).toEqual(encodedData);
    });
  });

  describe(`decodeQueryParameter`, () => {
    test(`should decode a url-compatible string into a JS object`, async () => {
      expect(decodeQueryParameter(encodedData)).toEqual(data);
    });
  });

  describe(`encodeQueryParameter <> decodeQueryParameter <> encodeQueryParameter`, () => {
    test(`should encode and decode multiple times without altering data`, async () => {
      const _decodedData: object = decodeQueryParameter(encodedData);
      expect(_decodedData).toEqual(data);

      const _encodedData: string = encodeQueryParameter(_decodedData);
      expect(_encodedData).toEqual(encodedData);

      const _decodedDataAgain: object = decodeQueryParameter(_encodedData);
      expect(_decodedDataAgain).toEqual(data);
    });
  });
});

As @RE350 suggested passing the JSON data in the body in the post would be ideal. However, you could still send the json object as a parameter in a GET request, decode the json string in the server-side logic and use it as an object.

For example, if you are on php you could do this (use the appropriate json decode in other languages):

Server request:

http://<php script>?param1={"nameservice":[{"id":89},{"id":3}]}

In the server:

$obj = json_decode($_GET['param1'], true);
$obj["nameservice"][0]["id"]

out put:

89

Send Json data string to a web address and get a result with method post

in C#

public string SendJsonToUrl(string Url, string StrJsonData)
{
    if (Url == "" || StrJsonData == "") return "";
    try
    {
        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);
        request.Method = "POST";
        request.ContentType = "application/json";
        request.ContentLength = StrJsonData.Length;
        using (var streamWriter = new StreamWriter(request.GetRequestStream()))
        {
            streamWriter.Write(StrJsonData);
            streamWriter.Close();
            var httpResponse = (HttpWebResponse)request.GetResponse();
            using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
            {
                var result = streamReader.ReadToEnd();
                return result;
            }
        }
    }
    catch (Exception exp)
    {
        throw new Exception("SendJsonToUrl", exp);
    }
}

in PHP

<?php

$input = file_get_contents('php://input');
$json = json_decode($input ,true);

?>

You may send array in the URL like this:

send each fileld FIELDS[POST_MESSAGE]

https://crm654.com/task.comment.add.json?taskId=625&FIELDS[POST_MESSAGE]='bingo!'

let qs = event.queryStringParameters;
const query = Object.keys(qs).map(key => key + '=' + qs[key]).join('&');