How to check file attachment status using MS Graph Api Send mail Java-SDK V5

Question

Hello Team,

We would like to check if file has been attached to mail or not using below code-MS Graph Api Java-Client credential flow.

attachmentsList1.add(fat);

AttachmentCollectionResponse attachmentCollectionResponse = new AttachmentCollectionResponse();

attachmentCollectionResponse.value = attachmentsList1;

AttachmentCollectionPage attachmentCollectionPage = new AttachmentCollectionPage(attachmentCollectionResponse, null);

message.attachments = attachmentCollectionPage;

Any other way to check file attachment status using graph api java?

Answer 1

Hello B Jayachithra,

I understand you are trying to check if a file attachment is present when sending an email using Microsoft Graph Java SDK v5.

To check if the file is attached before sending, you can validate like this:

if (message.attachments != null &&
    message.attachments.getCurrentPage() != null &&
    message.attachments.getCurrentPage().size() > 0) {
    System.out.println("Attachment is present before sending.");
} else {
    System.out.println("No attachment found before sending.");
}

After sending the email, you can verify the attachment status by checking the latest email in the Sent Items folder:

var  sentMessagesPage  = graphClient.users(senderUserId)
    .mailFolders("sentitems")
    .messages()
    .buildRequest()
    .top(1)
    .orderBy("receivedDateTime desc")
    .select("subject,hasAttachments,receivedDateTime")
    .get(); 

if (sentMessagesPage.getCurrentPage() != null &&
    !sentMessagesPage.getCurrentPage().isEmpty()) { 
	Message  latestSentMessage  = sentMessagesPage.getCurrentPage().get(0); 
    if (Boolean.TRUE.equals(latestSentMessage.hasAttachments)) {
        System.out.println("Confirmed: Sent mail has attachments.");
    } else {
        System.out.println("Confirmed: Sent mail has no attachments.");
    }
}

Here is a full working example for your reference.
(The attachment part is commented, so you can test with or without adding an attachment.)

AuthProvider.java:

package com.example.azureauth;

import com.microsoft.graph.authentication.IAuthenticationProvider;
import com.azure.identity.ClientSecretCredential;
import com.azure.identity.ClientSecretCredentialBuilder;
import java.net.URL;
import java.util.concurrent.CompletableFuture;

public class AuthProvider implements IAuthenticationProvider {

    private final ClientSecretCredential credential;
    private final String scope = "https://graph.microsoft.com/.default";

    public AuthProvider(String clientId, String clientSecret, String tenantId) {
        this.credential = new ClientSecretCredentialBuilder()
                .clientId(clientId)
                .clientSecret(clientSecret)
                .tenantId(tenantId)
                .build();
    }

    @Override
    public CompletableFuture<String> getAuthorizationTokenAsync(URL requestUrl) {
        return credential.getToken(
                        new com.azure.core.credential.TokenRequestContext()
                                .addScopes(scope))
                .toFuture()
                .thenApply(accessToken -> accessToken.getToken());
    }
}

Main.java:

package com.example.azureauth;

import com.microsoft.graph.models.*;
import com.microsoft.graph.requests.AttachmentCollectionPage;
import com.microsoft.graph.requests.AttachmentCollectionResponse;
import com.microsoft.graph.requests.GraphServiceClient;
import okhttp3.Request;
import java.nio.charset.StandardCharsets;
import java.util.LinkedList;

public class Main {

    public static void main(String[] args) {

        final String clientId = "appId";
        final String clientSecret = "secret_value";
        final String tenantId = "tenantId";
        final String senderUserId = "******@xxxxxx.onmicrosoft.com";
        final String recipientEmail = "******@xxxxxx.onmicrosoft.com";

        GraphServiceClient<Request> graphClient = GraphServiceClient
                .builder()
                .authenticationProvider(new AuthProvider(clientId, clientSecret, tenantId))
                .buildClient();

        try {
            Message message = new Message();
            message.subject = "Test Email without Attachment";

            ItemBody body = new ItemBody();
            body.contentType = BodyType.TEXT;
            body.content = "This is a test email.";
            message.body = body;

            LinkedList<Recipient> toRecipients = new LinkedList<>();
            Recipient recipient = new Recipient();
            EmailAddress emailAddress = new EmailAddress();
            emailAddress.address = recipientEmail;
            recipient.emailAddress = emailAddress;
            toRecipients.add(recipient);
            message.toRecipients = toRecipients;

            // Commented out the attachment adding part
            /*
            FileAttachment fileAttachment = new FileAttachment();
            fileAttachment.oDataType = "#microsoft.graph.fileAttachment";
            fileAttachment.name = "testfile.txt";
            fileAttachment.contentBytes = "Sample file content.".getBytes(StandardCharsets.UTF_8);

            LinkedList<Attachment> attachmentList = new LinkedList<>();
            attachmentList.add(fileAttachment);

            AttachmentCollectionResponse attachmentCollectionResponse = new AttachmentCollectionResponse();
            attachmentCollectionResponse.value = attachmentList;

            AttachmentCollectionPage attachmentCollectionPage = new AttachmentCollectionPage(attachmentCollectionResponse, null);
            message.attachments = attachmentCollectionPage;
            */

            if (message.attachments != null &&
                    message.attachments.getCurrentPage() != null &&
                    message.attachments.getCurrentPage().size() > 0) {
                System.out.println("Attachment is present before sending.");
            } else {
                System.out.println("No attachment found before sending.");
            }

            graphClient.users(senderUserId)
                    .sendMail(UserSendMailParameterSet
                            .newBuilder()
                            .withMessage(message)
                            .withSaveToSentItems(true)
                            .build())
                    .buildRequest()
                    .post();

            System.out.println("Email sent successfully.");

            Thread.sleep(5000);

            var sentMessagesPage = graphClient.users(senderUserId)
                    .mailFolders("sentitems")
                    .messages()
                    .buildRequest()
                    .top(1)
                    .orderBy("receivedDateTime desc")
                    .select("subject,hasAttachments,receivedDateTime")
                    .get();

            if (sentMessagesPage.getCurrentPage() != null &&
                    sentMessagesPage.getCurrentPage().size() > 0) {
                Message latestSentMessage = sentMessagesPage.getCurrentPage().get(0);
                System.out.println("Latest Sent Mail Subject: " + latestSentMessage.subject);
                if (Boolean.TRUE.equals(latestSentMessage.hasAttachments)) {
                    System.out.println("Confirmed: Sent mail has attachments.");
                } else {
                    System.out.println("Confirmed: Sent mail has NO attachments.");
                }
            } else {
                System.out.println("No messages found in Sent Items.");
            }

        } catch (Exception e) {
            System.out.println("Failed: " + e.getMessage());
            e.printStackTrace();
        }
    }
}

Response:

When I ran the same code by uncommenting the attachment part, I was able to successfully detect attachment status both before and after sending.

Let me know if you have any other questions or need any further assistance.

Hope this helps!

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