1.preferences->general->woekspace 修改项目编码GBK -> UTF8
2.preferences->java->installed jres 修改jdk版本
3.preferences->validation 关闭校验(选)
4.preferences->maven->installed->add 添加maven
5.preferences->maven->user setting->user setting 修改为上面添加maven的cnf目录下的usersetting.xml
6.创建父级
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7.修改pom文件添加依赖
8.创建工具包
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9.添加继承
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10.parent->run as->maven install 父级打包
11.common->run as->maven install 工具类打包
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