topic Re: tRESTClient can't start in Talend Studio

tRESTClient can't start

Jpoisson — Sat, 16 Nov 2024 00:23:46 GMT

Hi,

I'm very new to Talend and I'm trying to build a job supposed to take data from a CSV and send them parsed as a JSON object to a remote API.

The issue comes from the component tRESTClient which always return me a "NullPointerException" error but I cannot understand where it comes from.

The funny part is that is works on someone else computer (who already worked on Talend) but not mine.

Here is the stack trace :

mars 22, 2021 3:02:45 PM org.apache.cxf.jaxrs.client.JAXRSClientFactoryBean createWebClient

GRAVE: java.lang.NullPointerException : null

Exception in component tRESTClient_2 (Migrate_users)

java.lang.RuntimeException: java.lang.NullPointerException

at org.apache.cxf.jaxrs.client.JAXRSClientFactoryBean.createWebClient(JAXRSClientFactoryBean.java:234)

at staubli_migration_users.migrate_users_0_1.Migrate_users.tFileInputDelimited_1Process(Migrate_users.java:3745)

at staubli_migration_users.migrate_users_0_1.Migrate_users.runJobInTOS(Migrate_users.java:4648)

at staubli_migration_users.migrate_users_0_1.Migrate_users.main(Migrate_users.java:4444)

Caused by: java.lang.NullPointerException

at org.apache.cxf.jaxrs.client.WebClient.convertStringToURI(WebClient.java:1280)

at org.apache.cxf.jaxrs.client.WebClient.<init>(WebClient.java:97)

at org.apache.cxf.jaxrs.client.JAXRSClientFactoryBean.createWebClient(JAXRSClientFactoryBean.java:224)

... 3 more

Re: tRESTClient can't start

Jpoisson — Mon, 22 Mar 2021 14:14:36 GMT

Re: tRESTClient can't start

knknaveen — Mon, 22 Mar 2021 15:29:53 GMT

Could you share the settings in TRestclient component tab?

Re: tRESTClient can't start

Jpoisson — Mon, 22 Mar 2021 15:51:21 GMT

Yes of course, the value of the headers match the API requirements (which i'm very used to)

Re: tRESTClient can't start

evansdar — Mon, 22 Mar 2021 18:49:39 GMT

Either your contexts are null or something you're passing into the component is null. What do your contexts look like? What is logged from your tLogRow_2.

Re: tRESTClient can't start

Jpoisson — Mon, 22 Mar 2021 19:59:49 GMT

I found that if I put the data directly in the field it works, as if the context was not used. But inside the execute tab it displays my context with the correct data...

Re: tRESTClient can't start

emilieAzm — Fri, 09 Apr 2021 10:00:13 GMT

Hello,

I've had the exact same problem, context variable wouldn't load, always displayed "null".

I placed a tcontextdump in the job, and a tlogrow at the end of it.

From this moment, my variable was correctly loaded and worked just fine...

I think this is a bug from Talend, you might try this out 🙂

Re: tRESTClient can't start

Leukipp — Mon, 21 Feb 2022 04:25:44 GMT

I had the same issue after copying an operator from one job to another. After removing and re-adding the context variables from the context, the REST operator was happy again.