wxrqforever opened a new issue, #7111:
URL: https://github.com/apache/incubator-seata/issues/7111
一、问题描述
有个应用同时使用了多个DataSource，应用接入seata后启动报错了，报错日志如下：
```
Description:
Parameter 0 of method springFenceConfig in
org.apache.seata.spring.boot.autoconfigure.SeataSpringFenceAutoConfiguration
required a single bean, but 3 were found:
- xxxxDataSource: defined by method 'setDataSource' in class path
resource [com/xxxx.class]
- xxxx2DataSource: defined by method 'setDataSource' in class path
resource [com/xxxx2.class]
- xxxx3DataSource: defined by method 'setDataSource' in class path
resource [com/xxxx3.class]
Action:
Consider marking one of the beans as @Primary, updating the consumer to
accept multiple beans, or using @Qualifier to identify the bean that should be
consumed
```
我看了一下报错来源于
org.apache.seata.spring.boot.autoconfigure.SeataSpringFenceAutoConfiguration
```
@ConditionalOnExpression("${seata.enabled:true}")
@ConditionalOnBean(type = {"javax.sql.DataSource",
"org.springframework.transaction.PlatformTransactionManager"})
@ConditionalOnMissingBean(SpringFenceConfig.class)
@AutoConfigureAfter({SeataCoreAutoConfiguration.class,
TransactionAutoConfiguration.class})
@AutoConfigureOrder(Ordered.LOWEST_PRECEDENCE)
public class SeataSpringFenceAutoConfiguration {
public static final String SPRING_FENCE_DATA_SOURCE_BEAN_NAME =
"seataSpringFenceDataSource";
public static final String SPRING_FENCE_TRANSACTION_MANAGER_BEAN_NAME =
"seataSpringFenceTransactionManager";
@Bean
@ConfigurationProperties(StarterConstants.TCC_FENCE_PREFIX)
public SpringFenceConfig springFenceConfig(
DataSource dataSource,
PlatformTransactionManager transactionManager,
@Qualifier(SPRING_FENCE_DATA_SOURCE_BEAN_NAME)
@Autowired(required = false) DataSource springFenceDataSource,
@Qualifier(SPRING_FENCE_TRANSACTION_MANAGER_BEAN_NAME)
@Autowired(required = false) PlatformTransactionManager
springFenceTransactionManager) {
SpringFenceConfig springFenceConfig = new
SpringFenceConfig(springFenceDataSource != null ? springFenceDataSource :
dataSource,
springFenceTransactionManager != null ?
springFenceTransactionManager : transactionManager);
ObjectHolder.INSTANCE.setObject(BEAN_NAME_SPRING_FENCE_CONFIG,
springFenceConfig);
return springFenceConfig;
}
}
```
这里注入一个DataSource，由于区分不开到底是用哪个所以报错了。想请教下，这种是预期的吗？这个配置类是用来做什么的？有什么办法规避吗？
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