http://www.blogjava.net/stone2083/archive/2009/02/05/253452.html
http://sagahl.iteye.com/blog/556269
http://blog.csdn.net/cuker919/article/details/8049450
http://blog.csdn.net/cuker919/article/details/8049450
http://velocity.apache.org/tools/releases/2.0/javadoc/org/apache/velocity/tools/generic/EscapeTool.html
http://velocity.apache.org/engine/devel/webapps.html
http://blog.csdn.net/madding/article/details/7837776