I'm working on my usual projects on Eclipse, it's a J2EE application, made with Spring, Hibernate and so on. I'm using Tomcat 7 for this (no particular reason, I don't exploit any new feature, I just wanted to try that). Every time I debug my application, it happens that Eclipse debugger pops out like it has reached a breakpoint, but it is not the case, in fact it stops on a Java source file that is ThreadPoolExecutor. There is no stack trace on the console, it just stops. Then if I click on resume it goes on and the app works perfectly. This is what shows in the debugger window:

Daemon Thread ["http-bio-8080"-exec-2] (Suspended (exception RuntimeException)) 
    ThreadPoolExecutor$Worker.run() line: 912   
    TaskThread(Thread).run() line: 619

我真的无法解释这一点，因为我根本没有使用ThreadPoolExecutor。必须是来自Tomcat, Hibernate或Spring的东西。这很烦人，因为在调试过程中我总是要重新开始。

有线索吗?