Fix Download Outlook Email Attachments Using Microsoft Graph Api In Java «No Password»

For FileAttachment types, you can access the contentBytes directly for small files, or use the /$value endpoint to get a raw stream for better efficiency.

: Note your Client ID , Tenant ID , and Client Secret (or use interactive login for user-based apps). 2. Set Up Your Java Project For FileAttachment types, you can access the contentBytes

Before writing code, you need to register your application in the Microsoft Entra admin center to obtain the necessary credentials. For FileAttachment types

You can use the ClientSecretCredential for background services (Application permissions) or InteractiveBrowserCredential for desktop apps (Delegated permissions). For FileAttachment types, you can access the contentBytes

SecretClientCredential credential = new ClientSecretCredentialBuilder() .clientId(clientId).tenantId(tenantId).clientSecret(clientSecret).build(); GraphServiceClient graphClient = new GraphServiceClient(credential, "https://microsoft.com"); Use code with caution. 4. Fetch and Download Attachments