MrXionGe commented on issue #8306:
URL: https://github.com/apache/shardingsphere/issues/8306#issuecomment-732794871
@yu199195
Thanks a lot!
## Config Example 1
```
spring.shardingsphere.datasource.names=ds_0,ds_1
spring.shardingsphere.datasource.ds_0.jdbc-url=jdbc:mysql://127.0.0.1:3306/db_master?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai
spring.shardingsphere.datasource.ds_0.type=com.zaxxer.hikari.HikariDataSource
spring.shardingsphere.datasource.ds_0.driver-class-name=com.mysql.jdbc.Driver
spring.shardingsphere.datasource.ds_0.username=web_app
spring.shardingsphere.datasource.ds_0.password= 123456
spring.shardingsphere.datasource.ds_1.jdbc-url=jdbc:mysql://127.0.0.1:3306/db_read?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai
spring.shardingsphere.datasource.ds_1.type=com.zaxxer.hikari.HikariDataSource
spring.shardingsphere.datasource.ds_1.driver-class-name=com.mysql.jdbc.Driver
spring.shardingsphere.datasource.ds_1.username=web_app
spring.shardingsphere.datasource.ds_1.password= 123456
spring.shardingsphere.rules.replica-query.load-balancers.round-robin.type=ROUND_ROBIN
spring.shardingsphere.rules.replica-query.data-sources.pr_ds.primary-data-source-name=ds_0
spring.shardingsphere.rules.replica-query.data-sources.pr_ds.replica-data-source-names=ds_01
spring.shardingsphere.rules.replica-query.data-sources.pr_ds.load-balancer-name=round-robin
```
## Config Example 2
```
spring.shardingsphere.datasource.names=ds_0,ds_1
spring.shardingsphere.datasource.common.type=com.zaxxer.hikari.HikariDataSource
spring.shardingsphere.datasource.common.driver-class-name=com.mysql.jdbc.Driver
spring.shardingsphere.datasource.common.username=web_app
spring.shardingsphere.datasource.common.password= 123456
spring.shardingsphere.datasource.ds_0.jdbc-url=jdbc:mysql://127.0.0.1:3306/db_master?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai
spring.shardingsphere.datasource.ds_1.jdbc-url=jdbc:mysql://127.0.0.1:3306/db_read?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai
spring.shardingsphere.rules.replica-query.load-balancers.round-robin.type=ROUND_ROBIN
spring.shardingsphere.rules.replica-query.data-sources.pr_ds.primary-data-source-name=ds_0
spring.shardingsphere.rules.replica-query.data-sources.pr_ds.replica-data-source-names=ds_01
spring.shardingsphere.rules.replica-query.data-sources.pr_ds.load-balancer-name=round-robin
```
I tried the above two examples and failed. The same 'Exception Message'
#### pom.xml
```
<!-- sharding-jdbc -->
<dependency>
<groupId>org.apache.shardingsphere</groupId>
<artifactId>shardingsphere-jdbc-core-spring-boot-starter</artifactId>
<version>5.0.0-alpha</version>
</dependency>
```
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