摘要：
1.http://www.cnblogs.com/felixfly/archive/2011/12/07/2279321.html2.http://bkship.iteye.com/blog/11822433.http://www.cnblogs.com/slider/archive/2012/02/13/2349508.html4.http://blog.csdn.net/evilcode/article/details/56997865.http://blog.csdn.net/xjanker2/article/details/6303927 阅读全文
