Java

Upload Application Specific Data

See more Google Drive Examples

Uploads a text file (application specific data) where the contents of the file are contained in a string variable. Chilkat2 Java

import com.chilkatsoft.chilkat2.AuthGoogle;
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.JsonObject;
import com.chilkatsoft.chilkat2.Rest;

public class ChilkatExample {

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

        success = true;

        // It 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 application specific data scope.
        JsonObject jsonToken = new JsonObject();
        jsonToken.loadFile("qa_data/tokens/googleDriveAppData.json");

        AuthGoogle gAuth = new AuthGoogle();
        gAuth.setAccessToken(jsonToken.stringOf("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");

        JsonObject json = new JsonObject();
        json.setEmitCompact(false);

        json.updateString("name", "helloWorld.txt");
        json.updateString("description", "A simple text file that says Hello World.");
        json.updateString("mimeType", "text/plain");
        // Specifiy the application-specific data folder.
        json.updateString("parents[0]", "appDataFolder");
        rest.setMultipartBodyString(json.emit());

        System.out.println(json.emit());

        // The JSON looks like this:
        // {
        //   "name": "helloWorld.txt",
        //   "description": "A simple text file that says Hello World.",
        //   "mimeType": "text/plain",
        //   "parents": [
        //     "appDataFolder"
        //   ]
        // }

        // The 2nd part is the file content.
        // In this case, we'll upload a simple text file containing "Hello World!"
        rest.setPartSelector("2");
        rest.addHeader("Content-Type", "text/plain");

        String fileContents = "Hello World!";
        rest.setMultipartBodyString(fileContents);

        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": "Untitled",
        //   "mimeType": "text/plain"
        // }

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