1、其实很简单

2、创建mysql主从实例

3、创建sprigboot项目

3.1 加入依赖

        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.2</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.10</version>
        </dependency>

        <dependency>
            <groupId>io.shardingsphere</groupId>
            <artifactId>sharding-jdbc-spring-boot-starter</artifactId>
            <version>3.1.0.M1</version>
        </dependency>

3.2 配置

sharding:
  jdbc:
    dataSource:
      names: db-test0,db-test1
      db-test0:
        type: com.alibaba.druid.pool.DruidDataSource
        driverClassName: com.mysql.jdbc.Driver
        url: jdbc:mysql://192.168.11.110:35555/cool?useUnicode=true&characterEncoding=utf8&tinyInt1isBit=false&useSSL=false&serverTimezone=GMT
        username: root
        password: root
        maxPoolSize: 20
      db-test1:
        type: com.alibaba.druid.pool.DruidDataSource
        driverClassName: com.mysql.jdbc.Driver
        url: jdbc:mysql://192.168.11.110:26384/cool?useUnicode=true&characterEncoding=UTF-8&allowMultiQueries=true&useSSL=false&serverTimezone=GMT
        username: root
        password: root
        maxPoolSize: 20
    config:
      masterslave:
        load-balance-algorithm-type: round_robin
        name: db1s2
        master-data-source-name: db-test0
        slave-data-source-names: db-test1
      props:
        sql:
          show: true

server.port: 8085
mybatis.config-location: classpath:META-INF/mybatis-config.xml

3.3 正常使用mybatis

3.4 读写分离结果

2021-03-02 18:10:32.983 [http-nio-8085-exec-8] INFO  ShardingSphere-SQL - Rule Type: master-slave
2021-03-02 18:10:32.984 [http-nio-8085-exec-8] INFO  ShardingSphere-SQL - SQL: SELECT u.* FROM user u ::: DataSources: db-test1
2021-03-02 18:10:33.164 [http-nio-8085-exec-10] INFO  ShardingSphere-SQL - Rule Type: master-slave
2021-03-02 18:10:33.165 [http-nio-8085-exec-10] INFO  ShardingSphere-SQL - SQL: SELECT u.* FROM user u ::: DataSources: db-test1



2021-03-02 18:10:42.122 [http-nio-8085-exec-4] INFO  ShardingSphere-SQL - Rule Type: master-slave
2021-03-02 18:10:42.123 [http-nio-8085-exec-4] INFO  ShardingSphere-SQL - SQL: INSERT INTO user (
          id, username, password
        )
        VALUES (
        ?,
        ?,
        ?
        ) ::: DataSources: db-test0