Bean Autowiring problem

Question

I am starter in mutithreading. I am trying to index my data into solr.For that I was writing the following code

I am getting null pointer exception in the line highlighted

Answer 1

You need to add the following:

<context:annotation-config/>

You need to set the path for autowiring package scan and in your case it will be:

<context:component-scan base-package="a.b.c" />

After it you need to mark the class as candidate for autowiring:

@Component("indexTask")
@Scope("prototype")
IndexTask implements Callable<IndexObject>
    {
    //ommited
     }

Next you can remove indexTask bean configuration from xml file. your package will be created automatically.

Hope it helps.

Answer 2

Autowiring doesn't happen automatically, you need to configure it. See the Spring docs for detail, but essentially you need to add

<context:annotation-config/>