Regression on JSON issues in 4.11.11? "Cannot deserialize instance of java.util.ArrayList out of START_OBJECT token"

[hamishcunningham]

hi, I seem to have a similar problem to #331 on 4.11.11 triggered with this code:

  GitLabApi gitLabApi = new GitLabApi(
    GitLabApi.ApiVersion.OAUTH2_CLIENT, 
    "https://gitlab.com",
    "my access token"
  );
  List<Project> projects = gitLabApi.getProjectApi().getProjects();

I get:

Exception in thread "main" org.gitlab4j.api.GitLabApiException: Cannot deserialize instance of
java.util.ArrayList out of START_OBJECT token
at [Source: (org.glassfish.jersey.client.internal.HttpUrlConnector$2); line: 1, column: 1]
at org.gitlab4j.api.Pager.(Pager.java:93)
at org.gitlab4j.api.ProjectApi.getProjects(ProjectApi.java:106)
at org.gitlab4j.api.ProjectApi.getProjects(ProjectApi.java:78)
at org.gitlab4j.api.ProjectApi$getProjects.call(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:115)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:119)
at marking.GitRepo.connect(App.groovy:154)
at marking.GitRepo$connect$0.call(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:115)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:119)

Any ideas? Tnx!

Originally posted by @hamishcunningham in #331 (comment)

[gmessner]

@hamishcunningham
This is unrelated to #331, that was an issue only related to Webhook event classes.

The problem here is caused by the use of GitLabApi.ApiVersion.OAUTH2_CLIENT when creating the GitLabApi instance. You should only use GitLabApi.ApiVersion.V3, or GitLabApi.ApiVersion.V4.

I will add some documentation in the Javadocs for ApiVersion that indicates GitLabApi.ApiVersion.OAUTH2_CLIENT is for internal use only. I will also look into removing the GitLabApi.ApiVersion.OAUTH2_CLIENT value as it could be a bit confusing.

If you wish to login using OAUTH2 you should use one of the GitLabApi.oauth2Login() methods.

[hamishcunningham]

Thanks for the quick reply! I've got it working on V4 now. (I tried that earlier but it seemed to hang -- which I guess was me trying to pull down a complete list of all projects on gitlab.com! Oops!)

Great library, thanks for your help.

[gmessner]

@hamishcunningham
I have made modifications to GroupApi.getGroups() , ProjectApi.getProjects() , and UserApi.getUsers() to include a warning in the Javadocs about using these with https://gitlab.com.

I have also added a log output that logs the same warning when you use these methods against https://gitlab.com