Java

Delete All Files

See more Google Drive Examples

Permanently deletes all files owned by the user without moving it to the trash.

This example works by first getting a list of all fileIds, and then iterating over the list to delete each file.

See Google Drive Files delete for more information.

Chilkat2 Java

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

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 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);

        // Get 10 results per page for testing.  (The default page size is 100, with a max of 1000.
        rest.addQueryParam("pageSize", "10");

        JsonObject json = new JsonObject();
        int i = 0;
        int numFiles = 0;

        // Send the request for the 1st page.
        String jsonResponse = rest.fullRequestNoBody("GET", "/drive/v3/files");

        int pageNumber = 1;
        String pageToken = "";
        boolean bContinueLoop = rest.getLastMethodSuccess() && (rest.getResponseStatusCode() == 200);

        String fileId = "";
        StringArray saFileIds = new StringArray();

        while (bContinueLoop) {
            System.out.println("---- Page " + pageNumber + " ----");
            json.load(jsonResponse);

            numFiles = json.sizeOfArray("files");
            i = 0;
            while (i < numFiles) {
                json.setI(i);
                fileId = json.stringOf("files[i].id");
                System.out.println("name: " + json.stringOf("files[i].name"));
                System.out.println("id: " + fileId);
                saFileIds.append(fileId);
                i = i + 1;
            }

            // Get the next page of files.
            // If the "nextPageToken" is present in the JSON response, then use it in the "pageToken" parameter
            // for the next request.   If no "nextPageToken" was present, then this was the last page of files.
            pageToken = json.stringOf("nextPageToken");
            bContinueLoop = false;
            boolean bHasMorePages = json.getLastMethodSuccess();
            if (bHasMorePages) {
                rest.clearAllQueryParams();
                rest.addQueryParam("pageSize", "10");
                rest.addQueryParam("pageToken", pageToken);
                jsonResponse = rest.fullRequestNoBody("GET", "/drive/v3/files");
                bContinueLoop = rest.getLastMethodSuccess() && (rest.getResponseStatusCode() == 200);
                pageNumber = pageNumber + 1;
            }
        }

        // Before actually deleting, check for errors...
        if (!rest.getLastMethodSuccess()) {
            System.out.println(rest.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;
        }

        // OK, we have the full list of files.  Delete each..
        StringBuilder sbPath = new StringBuilder();
        numFiles = saFileIds.getCount();
        i = 0;
        while (i < numFiles) {
            fileId = saFileIds.getString(i);

            rest.clearAllQueryParams();

            sbPath.clear();
            sbPath.append("/drive/v3/files/");
            sbPath.append(fileId);

            try {
                jsonResponse = rest.fullRequestNoBody("DELETE", sbPath.getAsString());
            } catch (ChilkatException e) {
                System.out.println(e.getLastErrorText());
                return;
            }

            // A successful response will have a status code equal to 204 and the response body is empty.
            // (If not successful, then there should be a JSON response body with information..)
            if (rest.getResponseStatusCode() != 204) {
                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;
            }

            i = i + 1;
            System.out.println(i + ": Deleted " + fileId);
        }

        System.out.println("All Files Deleted.");
    }
}