How to set classpath on Talend Open Studio

Question

I've created a routine that depends on Apache HTTP Components , so I've downloaded the jar files and added those files to the Build Path.

I've set up both Classpath Variables and User Libraries under Java\\Build Path , but it still doesn't work.

My code compile without any errors, but it fails to run with the following exception:

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/http/client/RedirectStrategy
    at routines.downloadXls.start(downloadXls.java:10)
[...]

The piece of Java code is the following, it runs with Eclipse:

private CloseableHttpClient createHttpClient() {
        HttpClientBuilder builder = HttpClientBuilder.create();
        httpCtx.setAttribute(HttpClientContext.COOKIE_STORE, store);
        return builder.setRedirectStrategy(LaxRedirectStrategy.INSTANCE).build();
    }

I've already seen a similar question on talend community , but it didn't help me.

Any suggestion, please?

Thanks

Answer 1

You need to add your jar(s) in your Talend job using tLibraryLoad component (one per jar).

tLibraryLoad
        |
OnSubjobOk
        |
Code using apache components

When you build your job, the jars will be bundled with it and added to your classpath (in .bat and .sh launchers).
I noticed you're setting a cookie in your code, maybe if you give more detail about your requirement I can recommend a solution using dedicated Talend components, as it's best to use native components whenever possible (or you can ask a separate question).