方便更快捷的说明问题，可以按需填写（可删除）
使用环境：
springboot 2.1.5
mybatis-plus 3.1.5
sharding-jdcb 4.1.1
场景、问题：
[2022-05-18 11:54:00.028 maxrocky-cloud-service-transfer INFO ,, main org.apache.catalina.core.StandardService Stopping service [Tomcat]
[2022-05-18 11:54:00.645 maxrocky-cloud-service-transfer ERROR ,, main org.springframework.boot.diagnostics.LoggingFailureAnalysisReporter
***************************
APPLICATION FAILED TO START
***************************
Description:
A component required a bean of type 'org.apache.shardingsphere.shardingjdbc.jdbc.core.datasource.MasterSlaveDataSource' that could not be found.
Action:
Consider defining a bean of type 'org.apache.shardingsphere.shardingjdbc.jdbc.core.datasource.MasterSlaveDataSource' in your configuration.
Disconnected from the target VM, address: '127.0.0.1:7502', transport: 'socket'
Process finished with exit code 1
已进行操作：
# shardingjdbc 配置
shardingsphere:
datasource:
names: ds0,ds1,ds2
ds0:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.jdbc.Driver
url: jdbc:mysql://localhost:3306/shard_one?allowMultiQueries=true&useUnicode=true&characterEncoding=UTF-8&useSSL=false&serverTimezone=Asia/Shanghai
username: root
password: root
ds1:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.jdbc.Driver
url: jdbc:mysql://localhost:3306/shard_two?allowMultiQueries=true&useUnicode=true&characterEncoding=UTF-8&useSSL=false&serverTimezone=Asia/Shanghai
username: root
password: root
ds2:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.jdbc.Driver
url: jdbc:mysql://localhost:3306/shard_three?allowMultiQueries=true&useUnicode=true&characterEncoding=UTF-8&useSSL=false&serverTimezone=Asia/Shanghai
username: root
password: root
sharding:
tables:
sys_user:
actual-data-nodes: ds$->{0..2}.sys_user$->{0..2}
table-strategy:
inline:
sharding-column: id
algorithm-expression: sys_user$->{id % 2}
keyGenerator:
type: SNOWFLAKE
column: id
default-database-strategy:
inline:
sharding-column: id
algorithm-expression: sys_user$->{id % 2}
# 动态数据源配置
datasource:
dynamic:
datasource:
master:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.jdbc.Driver
url: jdbc:mysql://localhost:3306/maxrocky?allowMultiQueries=true&useUnicode=true&characterEncoding=UTF-8&useSSL=false&serverTimezone=Asia/Shanghai
username: root
password: root
# 指定默认数据源名称 此处指定 master 为默认数据源。
primary: master
现状：
搭建是按照sharding的官方demo搭建的。我只做分库分表，不需要主从，也不需要读写分离。