Java

Upload File to Google Cloud Storage

See more Google Cloud Storage Examples

Demonstrates how to upload a file to Google Cloud Storage. Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Http;
import com.chilkatsoft.chilkat2.HttpRequest;
import com.chilkatsoft.chilkat2.HttpResponse;
import com.chilkatsoft.chilkat2.JsonObject;
import com.chilkatsoft.chilkat2.StringBuilder;

public class ChilkatExample {

    public static void main(String[] args) {
        // 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"

        JsonObject jsonToken = new JsonObject();
        try {
            jsonToken.loadFile("qa_data/tokens/googleCloudStorage.json");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            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]"

        Http http = new Http();
        http.setAuthToken(jsonToken.stringOf("access_token"));

        StringBuilder sbPath = new StringBuilder();
        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");

        HttpRequest req = new HttpRequest();
        req.setHttpVerb("POST");
        req.setPath(sbPath.getAsString());
        req.setContentType("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");

        HttpResponse resp = new HttpResponse();
        try {
            http.httpSReq("www.googleapis.com", 443, true, req, resp);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        int responseCode = resp.getStatusCode();
        if (responseCode == 401) {
            System.out.println(resp.getBodyStr());
            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.getBodyStr());

        // 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="
        // }
    }
}