springboot初学阶段通用

spring:
  datasource:
    username: xxx
    password: "xxxx"
    url: jdbc:mysql://localhost:3306/xxx?useUnicode=true&characterEncoding=utf8&serverTimezone=Asia/Shanghai
    driver-class-name: com.mysql.cj.jdbc.Driver
mybatis:
  type-aliases-package: com.xxx.xxx                #注册别名
  mapper-locations: classpath:mybatis/mapper/*.xml  #指定mapper所在位置

  
    select * from Blog where id = #{id}