SpringBoot + mybatis + druid + s

依赖：

<dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
</dependency>

<dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
</dependency>
 <!-- mybatis -->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
        </dependency>

        <!--Mysql数据库驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql-connector.version}</version>
        </dependency>

<dependency>
            <groupId>org.apache.shardingsphere</groupId>
            <artifactId>sharding-jdbc-spring-boot-starter</artifactId>
</dependency>

主配置文件

server:
  port: 8092

spring:
  main:
    # 允许Bean定义被后定义的Bean覆盖
    allow-bean-definition-overriding: true
  application:
    name: csip-admin
  profiles:
    include: sharding-master-slave

mybatis:
  mapper-locations:
  - classpath:dao/*.xml
  - classpath*:com/**/mapper/*.xml

sharding-jdbc 读写分离的配置文件

#shardingsphere 读写分离
spring:
  shardingsphere:
    props:
      sql:
        show: true
    datasource:
      names: master,slave0
      master:
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.mysql.jdbc.Driver
        url: jdbc:mysql://localhost/master?serverTimezone=UTC&useSSL=false&useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=CONVERT_TO_NULL
        username: root
        password: root

      slave0:
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.mysql.jdbc.Driver
        url: jdbc:mysql://localhost/slave?serverTimezone=UTC&useSSL=false&useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=CONVERT_TO_NULL
        username: root
        password: root


    masterslave:
      load-balance-algorithm-type: round_robin
      name: ms
      master-data-source-name: master
      slave-data-source-names: slave0

以上配置，启动一直报错，提示

***************************
APPLICATION FAILED TO START
***************************

Description:

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.

但是当吧 数据源类型 从 druid 改成默认的 HikariDataSource 之后， 又可以正常启动
也实现了 读写分离的效果， 不知道哪里错了，尝试了很多修改，最终都是不行，
druid 这个数据库连接池，不知道是哪里的问题....

问题解决了：

原来是因为我使用了 druid-spring-boot-starter 内置了自动装配，
把依赖换成原生的就可以解决了
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.10</version>
</dependency>

配之后，启动，可以看到这里注入的 DataSource 已经是 Druid了
org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration
这个类的 sqlSessionFactory 方法 bean定义