Trying to establish an application link throws java.lang.NullPointerException

[Ignacio Torres Masdeu]

Java 1.6.0_26

JVM 20.1-b02

Jira 4.4.4

Confluence 4.1

Crowd 2.3.6 with SSO

Proxied via nginx.

When trying to create an application link between jira and confluence, confluence fails with:

10-ene-2012 17:29:33 com.sun.jersey.server.impl.application.WebApplicationImpl onException
GRAVE: Internal server error
java.lang.NullPointerException
        at com.atlassian.confluence.applinks.ConfluenceInternalHostApplication.getId(ConfluenceInternalHostApplication.java:221)
        at sun.reflect.GeneratedMethodAccessor652.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
...

        at java.lang.Thread.run(Thread.java:662)

http://pastebin.com/3pGBtCUs

[Ignacio Torres Masdeu · Accepted solution]

Rian Josua Masikome pointed me to the Confluence Knowledge Base article NullPointerException when try to configure Application links.

Following the resolution instructions worked like a charm.