how can i loop through the returned JSON using Httpclient

Question

I have the following code for calling an API that returns JSON with the following format:-

{
  "data": [
    {
      " Ser": 1,
      " No": 1
    },
    {
      " Ser": 2,
      " No": 2
    },
    {
      " Ser": 3,
      " No": 3
    },
    {
      " Ser": 4,
      " No": 4
    },
    {
      " Ser": 5,
      " No": 5
    },

  ]
}

The code is:-

    HttpClient client = new DefaultHttpClient();
    HttpGet request = new HttpGet("/json/api/getinfo?type=100");
    HttpResponse response = client.execute(request);
// Get the response, how i can loop through the returned JSON and assign the reterned json to a global parameters which i can access from ym system using has values #parameter1# , #parameter2#, etc.

so how can I loop through the returned JSON and assign it 'NO' to the global parameters? Best Regards

Vikdor · Accepted Answer · 2012-12-02 11:37:16Z

1

You should get the content out of the HttpReponse object through the HttpEntity.getContent() as mentioned in the documentation. The content should then be fed to a JSONObject from any JSON library like the one from json.org/java. Then you can traverse the JSON output through the JSONObject and extract elements out of it.

HttpResponse response = client.execute(request);
HttpEntity entity = response.getEntity();
if (entity != null) 
{
    //
    // Using Commons IO library's IOUtils method 
    // to read the content from the stream.
    //
    String json = IOUtils.toString(entity.getContent());
    JSONObject obj = new JSONObject(json);
    // Process the JSON

    // shutdown the connection.
}

answered Dec 2, 2012 at 11:37

Vikdor

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2 Comments

John John Over a year ago

thanks for the reply, but is there an example or tutorial that can help me .

Vikdor Over a year ago

The example from HttpClient documentation page will help you get the JSON content. Then, based on the JSON library you decide to use, it would have sample examples to convert a String to JSONObject and how traverse it. So, I am not sure if there would be a single tutorial/example covering both.

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