Java

Send JSON REST Request, Get JSON Response

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Demonstrates sending a RESTful JSON request, and receiving a JSON response. This example will create a bucket in Google Cloud Storage (which involves sending and receiving JSON). Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    // This example will create a bucket in Google Cloud Storage.

    // It requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkAuthGoogle gAuth = new CkAuthGoogle();
    // Obtain an access token as shown in one of the following examples:
    // See Get Access Token using a Service Account JSON Key
    // See Get Access Token using a P12 File

    CkRest rest = new CkRest();

    // Connect using TLS.
    boolean bAutoReconnect = true;
    success = rest.Connect("www.googleapis.com",443,true,bAutoReconnect);

    // Provide the authentication credentials (i.e. the access key)
    success = rest.SetAuthGoogle(gAuth);

    // Build the JSON request body for creating a bucket.
    // The only required property is the "name", but we'll add more
    // to make a better example..
    CkJsonObject jsonReqBody = new CkJsonObject();
    jsonReqBody.AppendString("name","chilkat-bucket-c");
    jsonReqBody.AppendString("kind","storage#bucket");
    jsonReqBody.AppendString("location","US");

    CkJsonObject objVersioning = new CkJsonObject();
    jsonReqBody.AppendObject2("versioning",objVersioning);
    objVersioning.AppendBool("enabled",true);

    // Show the HTTP request body we'll be sending.
    System.out.println(jsonReqBody.emit());

    // Add the required query parameter.
    // See https://cloud.google.com/storage/docs/json_api/v1/buckets/insert
    success = rest.AddQueryParam("project","chilkattest-1050");

    // Add the Content-Type HTTP request header.
    success = rest.AddHeader("Content-Type","application/json; charset=UTF-8");

    String jsonResponseStr = rest.fullRequestString("POST","/storage/v1/b",jsonReqBody.emit());
    if (rest.get_LastMethodSuccess() == false) {
        System.out.println(rest.lastErrorText());
        return;
        }

    // Show the JSON response.  (See below for a sample JSON response.)
    System.out.println("Json Response: " + jsonResponseStr);

    // {
    //  "kind": "storage#bucket",
    //  "id": "chilkat-bucket-c",
    //  "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-bucket-c",
    //  "projectNumber": "999992999999",
    //  "name": "chilkat-bucket-c",
    //  "timeCreated": "2016-04-29T21:08:10.451Z",
    //  "updated": "2016-04-29T21:08:10.451Z",
    //  "metageneration": "1",
    //  "owner": {
    //   "entity": "project-owners-999992999999"
    //  },
    //  "location": "US",
    //  "versioning": {
    //   "enabled": true
    //  },
    //  "storageClass": "STANDARD",
    //  "etag": "CAE="
    // }
    // 
  }
}