I realised that I can import the files from the jbpm-binaries.zip archive to use the jbpm api in my own eclipse version. By doing so, I was able to provide a complete workflow as web service. The problem is that this workflow only contains of 2 self-developed work items with corresponding handlers. How can I integrate human tasks now without using the demo setup?
My impression is that I have to use the web console to complete human tasks or is there another way?
You can do everything with the APIs, there is no need for the console. The only thing that you need to do is to be sure that the human task component is up. You can also start this component inside your applicaiton. Notice that the Human Task Component can be local, using Mina or JMS, you need to choose one way and configure it accordingly.