SpringBoot第一个简单应用
```#创建用户表CREATETABLEuser(idBIGINT(20)PRIMARYKEYNOTNULLCOMMENT'主键',nameVARCHAR(30)DEFAULTNULLCOMMENT'姓名',ageINT(11)DEFAULTNULLCOMMENT'年龄',emailVARCHAR(50)DEFAULTNULLCOMMENT'邮箱',manager_idBIGINT(20)DEFAULTNULLCOMMENT'直属上级id',create_timeDATETIMEDEFAULTNULLCOMMENT'创建时间',CONSTRAINTmanager_fkFOREIGNKEY(manager_id)REFERENCESuser(id))ENGINE=INNODBCHARSET=UTF8;#初始化数据：INSERTINTOuser(id,name,age,email,manager_id,create_time)VALUES(1087982257332887553,'大boss',40,'boss@baomidou.com',NULL,'2019-01-11 14:20:20'),(1088248166370832385,'王天风',25,'wtf@baomidou.com',1087982257332887553,'2019-02-05 11:12:22'),(1088250446457389058,'李艺伟',28,'lyw@baomidou.com',1088248166370832385,'2019-02-14 08:31:16'),(1094590409767661570,'张雨琪',31,'zjq@baomidou.com',1088248166370832385,'2019-01-14 09:15:15'),(1094592041087729666,'刘红雨',32,'lhm@baomidou.com',1088248166370832385,'2019-01-14 09:48:16');
```
```
#创建用户表CREATETABLEuser(idBIGINT(20)PRIMARYKEYNOTNULLCOMMENT'主键',nameVARCHAR(30)DEFAULTNULLCOMMENT'姓名',ageINT(11)DEFAULTNULLCOMMENT'年龄',emailVARCHAR(50)DEFAULTNULLCOMMENT'邮箱',manager_idBIGINT(20)DEFAULTNULLCOMMENT'直属上级id',create_timeDATETIMEDEFAULTNULLCOMMENT'创建时间',CONSTRAINTmanager_fkFOREIGNKEY(manager_id)REFERENCESuser(id))ENGINE=INNODBCHARSET=UTF8;#初始化数据：INSERTINTOuser(id,name,age,email,manager_id,create_time)VALUES(1087982257332887553,'大boss',40,'boss@baomidou.com',NULL,'2019-01-11 14:20:20'),(1088248166370832385,'王天风',25,'wtf@baomidou.com',1087982257332887553,'2019-02-05 11:12:22'),(1088250446457389058,'李艺伟',28,'lyw@baomidou.com',1088248166370832385,'2019-02-14 08:31:16'),(1094590409767661570,'张雨琪',31,'zjq@baomidou.com',1088248166370832385,'2019-01-14 09:15:15'),(1094592041087729666,'刘红雨',32,'lhm@baomidou.com',1088248166370832385,'2019-01-14 09:48:16');
```
