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Merge branch 'master' of https://github.com/easyhao1314/TravelPlatform.git
Merge branch 'master' of https://github.com/easyhao1314/TravelPlatform.git
添加生成团号的工具类，请查看CommonUtil里的说明。
如果code比较多，请再联系我，我写成从数据库中读取
CommonUtil