Java

Upload Binary File from Memory

See more Google Drive Examples

This example demonstrates how to upload a binary file from memory. It uploads the file to a subdirectory of our choosing. Chilkat2 Java

import com.chilkatsoft.chilkat2.AuthGoogle;
import com.chilkatsoft.chilkat2.Cache;
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.FileAccess;
import com.chilkatsoft.chilkat2.JsonArray;
import com.chilkatsoft.chilkat2.JsonObject;
import com.chilkatsoft.chilkat2.Rest;

public class ChilkatExample {

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

        success = true;

        // 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
        // Google Drive scope.

        AuthGoogle gAuth = new AuthGoogle();
        gAuth.setAccessToken("GOOGLE-DRIVE-ACCESS-TOKEN");

        Rest rest = new Rest();

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

        // Provide the authentication credentials (i.e. the access token)
        rest.setAuthGoogle(gAuth);

        // -------------------------------------------------------------------------
        // A multipart upload to Google Drive needs a multipart/related Content-Type
        rest.addHeader("Content-Type", "multipart/related");

        // Specify each part of the request.

        // The 1st part is JSON with information about the file.
        rest.setPartSelector("1");
        rest.addHeader("Content-Type", "application/json; charset=UTF-8");

        // Construct the JSON that will contain the metadata about the file data to be uploaded...
        JsonObject json = new JsonObject();
        json.appendString("name", "hedgehogs.jpg");
        json.appendString("description", "A cute photo of two hedgehogs.");
        json.appendString("mimeType", "image/jpeg");

        // To place the file in a folder, we must add a parents[] array to the JSON
        // and add the folder ID.
        // In a previous example (see Build Local Metadata Cache
        // we built a local cache to make it easy to lookup file IDs given a file path.
        // Let's find the file ID for the folder "testFolder/abc/123"
        Cache gdCache = new Cache();
        gdCache.setLevel(0);
        gdCache.addRoot("C:/ckCache/googleDrive");

        String folderId;
        try {
            folderId = gdCache.fetchText("testFolder/abc/123");
        } catch (ChilkatException e) {
            System.out.println("Filepath not found in cache.");
            return;
        }

        JsonArray parents = new JsonArray();
        json.appendArray2("parents", parents);

        parents.addStringAt(-1, folderId);

        rest.setMultipartBodyString(json.emit());

        // The 2nd part is the file content, which will contain the binary image data.
        rest.setPartSelector("2");
        rest.addHeader("Content-Type", "image/jpeg");

        FileAccess fac = new FileAccess();

        // Read a JPG file from the local filesystem.
ERROR: Invalid type for Chilkat2 Java: pbytes
ERROR: Method not in Chilkat2 Java: FileAccess.ReadEntireFile
        jpgBytes = fac.ERROR();

        // Add the bytes to our upload
ERROR: Method not in Chilkat2 Java: Rest.SetMultipartBodyBinary
        rest.ERROR();

        String jsonResponse;
        try {
            jsonResponse = rest.fullRequestMultipart("POST", "/upload/drive/v3/files?uploadType=multipart");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // A successful response will have a status code equal to 200.
        if (rest.getResponseStatusCode() != 200) {
            System.out.println("response status code = " + rest.getResponseStatusCode());
            System.out.println("response status text = " + rest.getResponseStatusText());
            System.out.println("response header: " + rest.getResponseHeader());
            System.out.println("response JSON: " + jsonResponse);
            return;
        }

        // Show the JSON response.
        json.load(jsonResponse);

        // Show the full JSON response.
        json.setEmitCompact(false);
        System.out.println(json.emit());

        // A successful response looks like this:
        // {
        //   "kind": "drive#file",
        //   "id": "0B53Q6OSTWYoldmJ0Z3ZqT2x5MFk",
        //   "name": "hedgehogs.jpg",
        //   "mimeType": "image/jpeg"
        // }

        // Get the fileId:
        System.out.println("fileId: " + json.stringOf("id"));
    }
}