Java

Upload File to Google Cloud Storage

See more Google Cloud Storage Examples

Demonstrates how to upload a file to Google Cloud Storage. 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 requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    //  This example uses a previously obtained access token having permission for the 
    //  scope "https://www.googleapis.com/auth/cloud-platform"

    CkJsonObject jsonToken = new CkJsonObject();
    success = jsonToken.LoadFile("qa_data/tokens/googleCloudStorage.json");
    if (success == false) {
        System.out.println(jsonToken.lastErrorText());
        return;
        }

    //  Send a POST equivalent to this curl command.
    //  The content of the file is contained in the request body.

    //  curl -X POST --data-binary @[OBJECT] \
    //      -H "Authorization: Bearer [OAUTH2_TOKEN]" \
    //      -H "Content-Type: [OBJECT_CONTENT_TYPE]" \
    //      "https://www.googleapis.com/upload/storage/v1/b/[BUCKET_NAME]/o?uploadType=media&name=[OBJECT_NAME]"

    CkHttp http = new CkHttp();
    http.put_AuthToken(jsonToken.stringOf("access_token"));

    CkStringBuilder sbPath = new CkStringBuilder();
    sbPath.Append("/upload/storage/v1/b/bucket_name/o?uploadType=media&name=object_name");
    int numReplaced = sbPath.Replace("bucket_name","chilkat-bucket-b");
    numReplaced = sbPath.Replace("object_name","penguins.jpg");

    CkHttpRequest req = new CkHttpRequest();
    req.put_HttpVerb("POST");
    req.put_Path(sbPath.getAsString());
    req.put_ContentType("image/jpeg");
    //  Indicate the file to be streamed in the request body when the HTTP POST is sent.
    req.StreamBodyFromFile("qa_data/jpg/penguins.jpg");

    CkHttpResponse resp = new CkHttpResponse();
    success = http.HttpSReq("www.googleapis.com",443,true,req,resp);
    if (success == false) {
        System.out.println(http.lastErrorText());
        return;
        }

    int responseCode = resp.get_StatusCode();
    if (responseCode == 401) {
        System.out.println(resp.bodyStr());
        System.out.println("If invalid credentials, then it is likely the access token expired.");
        System.out.println("Your app should automatically fetch a new access token and re-try.");
        return;
        }

    System.out.println("Response code: " + responseCode);
    System.out.println("Response body");
    System.out.println(resp.bodyStr());

    //  A successful response looks like this:
    //  Response code: 200
    //  Response body
    //  {
    //   "kind": "storage#object",
    //   "id": "chilkat-ocean/penguins.jpg/1502643657837855",
    //   "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/penguins.jpg",
    //   "name": "penguins.jpg",
    //   "bucket": "chilkat-ocean",
    //   "generation": "1502643657837855",
    //   "metageneration": "1",
    //   "contentType": "image/jpeg",
    //   "timeCreated": "2017-08-13T17:00:57.811Z",
    //   "updated": "2017-08-13T17:00:57.811Z",
    //   "storageClass": "MULTI_REGIONAL",
    //   "timeStorageClassUpdated": "2017-08-13T17:00:57.811Z",
    //   "size": "777835",
    //   "md5Hash": "nTd7EM53jEk4s8fixjoimg==",
    //   "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-ocean/o/penguins.jpg?generation=1502643657837855&alt=media",
    //   "crc32c": "ixxYVw==",
    //   "etag": "CJ+azOvX1NUCEAE="
    //  }
  }
}