参考：

http://jooben.blog.51cto.com/253727/1287683

http://blog.csdn.net/a574258039/article/details/19545435

http://www.cnblogs.com/linglingyuese/archive/2013/03/04/linglingyuese-one.html

http://www.oschina.net/question/99751_88142

http://www.ltesting.net/ceshi/open/kyxncsgj/jmeter/