1.引入pom 文件依赖
<dependency>
<groupId>io.shardingjdbc</groupId>
<artifactId>sharding-jdbc-core</artifactId>
<version>2.0.3</version>
</dependency>
2.添加两个config配置文件
@Data
@ConfigurationProperties(prefix = "sharding.jdbc")
public class ShardingMasterSlaveConfig {
// 存放本地多个数据源
private Map<String, HikariDataSource> dataSources = new HashMap<>();
private MasterSlaveRuleConfiguration masterSlaveRule;
}
@Configuration
@EnableConfigurationProperties(ShardingMasterSlaveConfig.class)
@Log4j2
// 读取ds_master主数据源和读写分离配置
@ConditionalOnProperty({"sharding.jdbc.data-sources.ds_master.jdbc-url",
"sharding.jdbc.master-slave-rule.master-data-source-name"})
public class ShardingDataSourceConfig {
@Autowired
private ShardingMasterSlaveConfig shardingMasterSlaveConfig;
@Bean
public DataSource masterSlaveDataSource() throws SQLException {
final Map<String, DataSource> dataSourceMap = Maps.newHashMap();
dataSourceMap.putAll(shardingMasterSlaveConfig.getDataSources());
final Map<String, Object> newHashMap = Maps.newHashMap();
// 创建 MasterSlave数据源
DataSource dataSource = MasterSlaveDataSourceFactory.createDataSource(dataSourceMap,
shardingMasterSlaveConfig.getMasterSlaveRule(), newHashMap);
log.info("masterSlaveDataSource config complete");
return dataSource;
}
}
3.最后配置yml 文件
#shardingjdbc配置
sharding:
jdbc:
data-sources:
###配置第一个从数据库
ds_slave_0:
jdbc-url: jdbc:mysql://192.168.200.97:3308/account_center?useUnicode=true&characterEncoding=utf-8&useSSL=true
driver-class-name: com.mysql.jdbc.Driver
username: root
password: 123456
###主数据库配置
ds_master:
jdbc-url: jdbc:mysql://192.168.200.97:3307/account_center?useUnicode=true&characterEncoding=utf-8&useSSL=true
driver-class-name: com.mysql.jdbc.Driver
username: root
password: qwerty
###配置读写分离
master-slave-rule:
###配置从库选择策略,提供轮询与随机,这里选择用轮询
load-balance-algorithm-type: round_robin
####指定从数据库
slave-data-source-names: ds_slave_0
name: ds_ms
####指定主数据库
master-data-source-name: ds_master