Java

Send XML REST Request, Get Response with No Body (Google Cloud Storage)

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Demonstrates sending a RESTful XML request, and receiving a response where the expected response is a header with no body (Content-Length = 0). This example will create a bucket in Google Cloud Storage using the Google Cloud Storage XML API.

See Create a Bucket using the XML API for additional request options.

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 using the XML API.

    // 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 XML request body for creating a bucket.
    // See https://cloud.google.com/storage/docs/xml-api/put-bucket-create
    CkXml xmlReqBody = new CkXml();
    xmlReqBody.put_Tag("CreateBucketConfiguration");
    xmlReqBody.NewChild2("LocationConstraint","us");
    xmlReqBody.NewChild2("StorageClass","STANDARD");

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

    // There are no query parameters...

    // The HOST header must be specified, because it needs to be different than
    // the domain previously passed to the Connect method.
    // The name of the bucket is the 1st part of the HOST header.
    success = rest.AddHeader("Host","chilkat-example-bucket.storage.googleapis.com");

    // The project ID is specified in an HTTP request header
    success = rest.AddHeader("x-goog-project-id","chilkattest-1050");

    // In this case, the response body is expected to be empty.  We can still
    // call FullRequestString.  We expect an empty string to be returned.
    String responseStr = rest.fullRequestString("PUT","/",xmlReqBody.getXml());
    if (rest.get_LastMethodSuccess() != true) {
        System.out.println(rest.lastErrorText());
        return;
        }

    // Check the response status code to make sure it is 200.
    int responseStatus = rest.get_ResponseStatusCode();
    System.out.println("Response Status Code = " + responseStatus);
  }
}