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.

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;

    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.

    CkAuthGoogle gAuth = new CkAuthGoogle();
    gAuth.put_AccessToken("GOOGLE-DRIVE-ACCESS-TOKEN");

    CkRest rest = new CkRest();

    // Connect using TLS.
    boolean bAutoReconnect = true;
    success = 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");

    CkJsonObject json = new CkJsonObject();
    int i;
    int numFiles;

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

    int pageNumber = 1;
    String pageToken;
    boolean bContinueLoop = rest.get_LastMethodSuccess() && (rest.get_ResponseStatusCode() == 200);

    String fileId;
    CkStringArray saFileIds = new CkStringArray();

    while (bContinueLoop == true) {

        System.out.println("---- Page " + pageNumber + " ----");
        json.Load(jsonResponse);

        numFiles = json.SizeOfArray("files");
        i = 0;
        while (i < numFiles) {
            json.put_I(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.get_LastMethodSuccess();
        if (bHasMorePages == true) {
            rest.ClearAllQueryParams();
            rest.AddQueryParam("pageSize","10");
            rest.AddQueryParam("pageToken",pageToken);
            jsonResponse = rest.fullRequestNoBody("GET","/drive/v3/files");
            bContinueLoop = rest.get_LastMethodSuccess() && (rest.get_ResponseStatusCode() == 200);
            pageNumber = pageNumber+1;
            }

        }

    // Before actually deleting, check for errors...
    if (rest.get_LastMethodSuccess() != true) {
        System.out.println(rest.lastErrorText());
        return;
        }

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

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

        rest.ClearAllQueryParams();

        sbPath.Clear();
        sbPath.Append("/drive/v3/files/");
        sbPath.Append(fileId);

        jsonResponse = rest.fullRequestNoBody("DELETE",sbPath.getAsString());
        if (rest.get_LastMethodSuccess() != true) {
            System.out.println(rest.lastErrorText());
            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.get_ResponseStatusCode() != 204) {
            System.out.println("response status code = " + rest.get_ResponseStatusCode());
            System.out.println("response status text = " + rest.responseStatusText());
            System.out.println("response header: " + rest.responseHeader());
            System.out.println("response JSON: " + jsonResponse);
            return;
            }

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

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