How to fix "java.lang.IllegalStateException: Not a JSON Array" when creating an OnlineMeeting using Java SDK ?

Question

Hello everyone,

I am trying to upgrade my Microsoft Graph SDK to create Teams meetings. Here is the previous code (for microsoft-graph 3.0.0) :

public WrapperVO<Object> generateTeamsUrl(MultipartFormDataInput dates) throws BusinessException, TechnicalException{
		WrapperVO<Object> wVO = new WrapperVO<Object>();
		List<String> scopes = new ArrayList<>();
		String clientSecret = //retrieved in database
		scopes.add("https://graph.microsoft.com/.default");
		String meetingStart = null;
		String meetingEnd = null;
		try {
			meetingStart = dates.getFormDataPart("meetingStart", String.class, null);
			meetingEnd = dates.getFormDataPart("meetingEnd", String.class, null);
		} catch (IOException e) {
			e.printStackTrace();
		}
		
		final ClientSecretCredential clientSecretCredential = new ClientSecretCredentialBuilder()
		        .clientId("")
		        .clientSecret(clientSecret)
		        .tenantId("")
		        .build();

		final TokenCredentialAuthProvider tokenCredentialAuthProvider = new TokenCredentialAuthProvider(clientSecretCredential);
		
		GraphServiceClient graphClient = GraphServiceClient.builder().authenticationProvider(tokenCredentialAuthProvider).buildClient();

		OnlineMeeting onlineMeeting = new OnlineMeeting();
		onlineMeeting.startDateTime = OffsetDateTime.parse(meetingStart);
		onlineMeeting.endDateTime = OffsetDateTime.parse(meetingEnd);
		onlineMeeting.subject = "Meeting";

		OnlineMeeting createdMeeting = graphClient.users("").onlineMeetings().buildRequest().post(onlineMeeting);
		System.out.println("OnlineMeeting URL: " + createdMeeting.joinWebUrl);
		
		Response resp = Response.ok(createdMeeting.joinWebUrl).build();

		return new WrapperVO<>(wVO.addData(resp), new MetaDataVO());
    }

and the new one (microsoft-graph 6.0.x)

public WrapperVO<Object> generateTeamsUrl(MultipartFormDataInput dates) throws BusinessException, TechnicalException{
    WrapperVO<Object> wVO = new WrapperVO<Object>();
    String[] scopes = new String[] { "https://graph.microsoft.com/.default" };
    String clientSecret = //in database
    String meetingStart = null;
    String meetingEnd = null;
    try {
       meetingStart = dates.getFormDataPart("meetingStart", String.class, null);
       meetingEnd = dates.getFormDataPart("meetingEnd", String.class, null);
    } catch (IOException e) {
       e.printStackTrace();
    }
    
    final ClientSecretCredential clientSecretCredential = new ClientSecretCredentialBuilder()
            .clientId("")
            .clientSecret(clientSecret)
            .tenantId("")
            .build();
    
    GraphServiceClient graphClient = new GraphServiceClient(clientSecretCredential, scopes);
    OnlineMeeting onlineMeeting = new OnlineMeeting();
    onlineMeeting.setStartDateTime(OffsetDateTime.parse(meetingStart));
    onlineMeeting.setEndDateTime(OffsetDateTime.parse(meetingEnd));
    onlineMeeting.setSubject("Meeting");
    OnlineMeeting createdMeeting = graphClient.users().byUserId("").onlineMeetings()
          .post(onlineMeeting);
    System.out.println("OnlineMeeting URL: " + createdMeeting.getJoinWebUrl());
    
    Response resp = Response.ok(createdMeeting.getJoinWebUrl()).build();
    return new WrapperVO<>(wVO.addData(resp), new MetaDataVO());
   }

However, I encounter the following error when trying to use post():

Caused by: java.lang.IllegalStateException: Not a JSON Array: {"@odata.context":"https://graph.microsoft.com/v1.0/$metadata#users('')/onlineMeetings/$entity","id":"","creationDateTime":"2024-04-15T11:23:24.1567614Z","startDateTime":"2024-04-16T10:11:00Z","endDateTime":"2024-04-16T11:11:00Z","joinUrl":"https://teams.microsoft.com/l/meetup-join/19%3ameeting_MjgyY2Y","meetingCode":"","isBroadcast":false,"autoAdmittedUsers":"everyoneInCompany","outerMeetingAutoAdmittedUsers":null,"capabilities":[],"externalId":null,"iCalUid":null,"meetingType":null,"meetingsMigrationMode":null,"joinWebUrl":"https://teams.microsoft.com/l/meetup-join/19%3ameeting_","subject":"Meeting","videoTeleconferenceId":null,"isEntryExitAnnounced":true,"allowedPresenters":"everyone","allowAttendeeToEnableMic":true,"allowAttendeeToEnableCamera":true,"allowMeetingChat":"enabled","shareMeetingChatHistoryDefault":"none","allowTeamworkReactions":true,"anonymizeIdentityForRoles":[],"recordAutomatically":false,"allowParticipantsToChangeName":false,"allowTranscription":true,"allowRecording":true,"meetingTemplateId":null,"broadcastSettings":null,"meetingInfo":null,"audioConferencing":null,"watermarkProtection":null,"chatRestrictions":null,"participants":{"organizer":{"upn":"","role":"presenter","identity":{"application":null,"device":null,"user":{"id":"","displayName":null,"tenantId":"","identityProvider":"AAD"}}},"attendees":[]},"chatInfo":{"threadId":"19:meeting_","messageId":"0","replyChainMessageId":null},"joinInformation":{"content":"data:text/html","contentType":"html"},"joinMeetingIdSettings":{"isPasscodeRequired":false,"joinMeetingId":"38","passcode":null},"lobbyBypassSettings":{"scope":"organization","isDialInBypassEnabled":false}} at com.google.gson.JsonElement.getAsJsonArray(JsonElement.java:117) at com.microsoft.kiota.serialization.JsonParseNode.iterateOnArray(JsonParseNode.java:167) at com.microsoft.kiota.serialization.JsonParseNode.getUntypedValue(JsonParseNode.java:245) at com.microsoft.kiota.serialization.JsonParseNode.tryGetAnything(JsonParseNode.java:317) at com.microsoft.kiota.serialization.JsonParseNode.assignFieldValues(JsonParseNode.java:299) at com.microsoft.kiota.serialization.JsonParseNode.getObjectValue(JsonParseNode.java:213) at com.microsoft.kiota.http.OkHttpRequestAdapter.send(OkHttpRequestAdapter.java:296) at com.microsoft.graph.users.item.onlinemeetings.OnlineMeetingsRequestBuilder.post(OnlineMeetingsRequestBuilder.java:120)

I haven't found any information about this issue on the forum and documentation, do you have a workaround ?

Thank you

Answer 1

Bonjour mz-0180,

L'erreur "java.lang.IllegalStateException: Not a JSON Array" suggère que la méthode attend un tableau JSON, mais qu'à la place, un objet JSON est fourni.

Cela pourrait être dû à un changement dans le format de réponse attendu dans la version la plus récente du SDK. Le SDK Microsoft Graph a subi des modifications importantes, notamment des mises à jour des espaces de noms, des méthodes d'authentification et des générateurs de requêtes. Il est important de vous assurer que votre code est aligné sur ces changements.

Vous trouverez plus d'informations dans les deux articles suivant:

• Microsoft Graph .NET SDK v5 changelog and upgrade guide
• Microsoft Graph .NET SDK v5 is now generally available 

Voici une version révisée de votre code avec le SDK mis à jour:

public WrapperVO<Object> generateTeamsUrl(MultipartFormDataInput dates) throws BusinessException, TechnicalException {
    WrapperVO<Object> wVO = new WrapperVO<Object>();
    String[] scopes = new String[] { "https://graph.microsoft.com/.default" };
    String clientSecret = //retrieved from database
    String meetingStart = null;
    String meetingEnd = null;
    try {
       meetingStart = dates.getFormDataPart("meetingStart", String.class, null);
       meetingEnd = dates.getFormDataPart("meetingEnd", String.class, null);
    } catch (IOException e) {
       e.printStackTrace();
    }
    
    final ClientSecretCredential clientSecretCredential = new ClientSecretCredentialBuilder()
            .clientId("")
            .clientSecret(clientSecret)
            .tenantId("")
            .build();
    
    GraphServiceClient graphClient = GraphServiceClient.builder()
            .authenticationProvider(new TokenCredentialAuthProvider(scopes, clientSecretCredential))
            .buildClient();
    
    OnlineMeeting onlineMeeting = new OnlineMeeting();
    onlineMeeting.setStartDateTime(OffsetDateTime.parse(meetingStart));
    onlineMeeting.setEndDateTime(OffsetDateTime.parse(meetingEnd));
    onlineMeeting.setSubject("Meeting");
    
    // Use try-catch to handle the potential IllegalStateException
    try {
        OnlineMeeting createdMeeting = graphClient.users().byUserId("").onlineMeetings()
              .buildRequest()
              .post(onlineMeeting);
        System.out.println("OnlineMeeting URL: " + createdMeeting.joinWebUrl);
        
        Response resp = Response.ok(createdMeeting.joinWebUrl).build();
        return new WrapperVO<>(wVO.addData(resp), new MetaDataVO());
    } catch (IllegalStateException e) {
        e.printStackTrace();
        // Handle the error or rethrow it
        throw e;
    }
}

A bientôt

Alexis

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