Esper入门例子
1.Complex Event Processing Made Easy (using Esper)
相当好的入门例子，讲了如何监控核电站的温度。
http://java.dzone.com/articles/complex-event-processing-made
代码可以在这里下载
https://github.com/corsoft/esper-demo-nuclear

2.Getting started with Esper in 5 minutes.
比上一个简单，东西也比他少。不过看过前面那个了，这个就没必要看了。
http://coffeeonesugar.wordpress.com/2009/07/21/getting-started-with-esper-in-5-minutes/