本篇文章只适用于已知表数量的，不适合动态创建表。

1、配置文件

spring:
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    username: root
    password: root
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/db?useUnicode=true&useSSL=false&characterEncoding=utf8&serverTimezone=GMT%2b8
    druid:
      # 初始连接数
      initialSize: 5
      # 最小连接池数量
      minIdle: 5
      # 最大连接池数量
      maxActive: 20
      # 配置获取连接等待超时的时间
      maxWait: 60000
  shardingsphere:
    datasource:
      names: db0
      db0:
        data-source-name: com.alibaba.druid.pool.DruidDataSource
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.mysql.cj.jdbc.Driver
        url: jdbc:mysql://localhost:3306/db?useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=true&serverTimezone=GMT%2B8
        username: root
        pa