Spring boot中使用sharding-jdbc完成读写分离配

1.引入依赖

        <dependency>
            <groupId>io.shardingjdbc</groupId>
            <artifactId>sharding-jdbc-core</artifactId>
            <version>2.0.3</version>
        </dependency>        

　　

2.在src/main/resources中添加配置文件sharding-jdbc.yml

dataSources:
  db_master: !!com.zaxxer.hikari.HikariDataSource
    driverClassName: com.mysql.jdbc.Driver
    jdbcUrl: jdbc:mysql://192.168.31.128:3307/gmall_pms?useUnicode=true&characterEncoding=utf-8&useSSL=false
    username: root
    password: root
  db_slave1: !!com.zaxxer.hikari.HikariDataSource
    driverClassName: com.mysql.jdbc.Driver
    jdbcUrl: jdbc:mysql://192.168.31.128:3316/gmall_pms?useUnicode=true&characterEncoding=utf-8&useSSL=false
    username: root
    password: root
  db_slave2: !!com.zaxxer.hikari.HikariDataSource
      driverClassName: com.mysql.jdbc.Driver
      jdbcUrl: jdbc:mysql://192.168.31.128:3317/gmall_pms?useUnicode=true&characterEncoding=utf-8&useSSL=false
      username: root
      password: root
masterSlaveRule:
  name: db_ms
  masterDataSourceName: db_master
  slaveDataSourceNames: [db_slave1,db_slave2]

###注意，这份文档直接从官网复制的。!!后面是DataSource的实现类全类名不能省略。
###多个slave加多份db_slaveXX配置即可，在slaveDataSourceNames列举这些slaver

　　

3.添加数据源配置类

/**
 * 这是一个配置类
 *
 * SpringBoot引入某个场景，这个场景的组件就会自动配置好。
 * 1）、
 */
@Configuration
public class PmsDataSourceConfig {

    @Bean
    public DataSource dataSource() throws IOException, SQLException {

        File file = ResourceUtils.getFile("classpath:sharding-jdbc.yml");
        DataSource dataSource = MasterSlaveDataSourceFactory.createDataSource(file);
        return dataSource;
    }
}