I have an application that sends a verification code to my Email after entering credentials. I need to read the verification code from my inbox. I am using Outlook and my organization uses the MAPI protocol for OUTLOOK365.
Can anyone help me with this?
2 Answers
Here is the full code which will print all the inbox message.You need to extract the body and find the verification code
package solution; import java.util.Properties; import javax.mail.Folder; import javax.mail.Message; import javax.mail.MessagingException; import javax.mail.NoSuchProviderException; import javax.mail.PasswordAuthentication; import javax.mail.Session; import javax.mail.Store; public class test { public static String username =null; public static String password1 =null; public static void check(String host, String storeType, String user, String password) { username= user; password1 = password; try { //create properties field Properties properties = new Properties(); properties.put("mail.imap.host", host); properties.put("mail.imap.port", "993"); // properties.put("mail.imap.starttls.enable", "true"); // properties.setProperty("mail.imap.socketFactory.fallback", "false"); // properties.setProperty("mail.imao.socketFactory.port", // String.valueOf("993")); //properties.put("mail.imap.auth", "false"); // properties.put("mail.debug.auth", "true"); properties.put("mail.imaps.ssl.trust", "*"); // This is the most IMP property Session emailSession = Session.getDefaultInstance(properties); //create the POP3 store object and connect with the pop server Store store = emailSession.getStore("imaps"); //try imap or impas store.connect(host, user, password); // store.connect(host, 993, user, password); //create the folder object and open it Folder emailFolder = store.getFolder("INBOX"); emailFolder.open(Folder.READ_ONLY); // retrieve the messages from the folder in an array and print it Message[] messages = emailFolder.getMessages(); System.out.println("messages.length---" + messages.length); for (int i = 0, n = messages.length; i < 10; i++) { Message message = messages[i]; System.out.println("---------------------------------"); System.out.println("Email Number " + (i + 1)); System.out.println("Subject: " + message.getSubject()); System.out.println("From: " + message.getFrom()[0]); System.out.println("Text: " + message.getContent().toString()); } //close the store and folder objects emailFolder.close(false); store.close(); } catch (NoSuchProviderException e) { e.printStackTrace(); } catch (MessagingException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } public static void main(String[] args) { String host = "outlook.office365.com"; String mailStoreType = "imaps"; String username = "USERNAME"; String password = "PASSWORD"; check(host, mailStoreType, username, password); } } Also, you need the following dependency
<dependency> <groupId>javax.mail</groupId> <artifactId>mail</artifactId> <version>1.4.7</version> </dependency> Using the Graph API one can access the Outlook.
you need to register in Azure App.Usauly done by IT Team.you would get a client Id, Client secret and Tennant id.
then you need to use Client credential autorization provider to get the tokken. below is the code from Microsoft Java SDK shared at
import com.microsoft.aad.msal4j.ClientCredentialFactory; import com.microsoft.aad.msal4j.ClientCredentialParameters; import com.microsoft.aad.msal4j.ConfidentialClientApplication; import com.microsoft.aad.msal4j.IAuthenticationResult; import com.nimbusds.oauth2.sdk.http.HTTPResponse; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; import java.util.Collections; import java.util.Properties; import java.util.concurrent.CompletableFuture; class ClientCredentialGrant { private static String authority; private static String clientId; private static String secret; private static String scope; private static ConfidentialClientApplication app; public static void main(String args[]) throws Exception{ setUpSampleData(); try { BuildConfidentialClientObject(); IAuthenticationResult result = getAccessTokenByClientCredentialGrant(); String usersListFromGraph = getUsersListFromGraph(result.accessToken()); System.out.println("Users in the Tenant = " + usersListFromGraph); System.out.println("Press any key to exit ..."); System.in.read(); } catch(Exception ex){ System.out.println("Oops! We have an exception of type - " + ex.getClass()); System.out.println("Exception message - " + ex.getMessage()); throw ex; } } private static void BuildConfidentialClientObject() throws Exception { // Load properties file and set properties used throughout the sample app = ConfidentialClientApplication.builder( clientId, ClientCredentialFactory.createFromSecret(secret)) .authority(authority) .build(); } private static IAuthenticationResult getAccessTokenByClientCredentialGrant() throws Exception { // With client credentials flows the scope is ALWAYS of the shape "resource/.default", as the // application permissions need to be set statically (in the portal), and then granted by a tenant administrator ClientCredentialParameters clientCredentialParam = ClientCredentialParameters.builder( Collections.singleton(scope)) .build(); CompletableFuture<IAuthenticationResult> future = app.acquireToken(clientCredentialParam); return future.get(); } private static String getMessagesGraph(String accessToken) throws IOException { URL url = new URL(""<yourSubject>\""); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("GET"); conn.setRequestProperty("Authorization", "Bearer " + accessToken); conn.setRequestProperty("Accept","application/json"); int httpResponseCode = conn.getResponseCode(); if(httpResponseCode == HTTPResponse.SC_OK) { StringBuilder response; try(BufferedReader in = new BufferedReader( new InputStreamReader(conn.getInputStream()))){ String inputLine; response = new StringBuilder(); while (( inputLine = in.readLine()) != null) { response.append(inputLine); } } return response.toString(); } else { return String.format("Connection returned HTTP code: %s with message: %s", httpResponseCode, conn.getResponseMessage()); } } /** * Helper function unique to this sample setting. In a real application these wouldn't be so hardcoded, for example * different users may need different authority endpoints or scopes */ private static void setUpSampleData() throws IOException { // Load properties file and set properties used throughout the sample Properties properties = new Properties(); properties.load(Thread.currentThread().getContextClassLoader().getResourceAsStream("application.properties")); authority = properties.getProperty("AUTHORITY"); clientId = properties.getProperty("CLIENT_ID"); secret = properties.getProperty("SECRET"); scope = properties.getProperty("SCOPE"); } } 
