dongmaxiang opened a new issue #9672:
URL: https://github.com/apache/dubbo/issues/9672
### Environment
* Dubbo version: 2.7.15
* Operating System version: mac os
* Java version: 1.8
### Steps to reproduce this issue
1. 2.7.15
2. 配置文件yml配置dubbo扫描的的包路径：dubbo.scan.base-packages
3. man方法所在的启动类上添加@EnableDubbo
### Expected Behavior
可以扫描yml配置文件中的packages
### Actual Behavior
实际上扫描不到
### 问题我也找到了，就是不知道直接提交代码修复还是提Issue。
2.7.8是可以存在多个ServiceClassPostProcessor的，也就是说配置文件中的base-packages可以扫描
@EnableDubbo(scanBasePackages="your packages")注解上的也可以扫描。
但是2.7.15就只允许注册一个，不知道设计的目的是什么？
```java
@ConditionalOnProperty(prefix = DUBBO_PREFIX, name = "enabled",
matchIfMissing = true)
@Configuration
@AutoConfigureAfter(DubboRelaxedBindingAutoConfiguration.class)
@EnableConfigurationProperties(DubboConfigurationProperties.class)
@EnableDubboConfig
public class DubboAutoConfiguration implements ApplicationContextAware,
BeanDefinitionRegistryPostProcessor {
@ConditionalOnProperty(prefix = DUBBO_SCAN_PREFIX, name =
BASE_PACKAGES_PROPERTY_NAME)
@ConditionalOnBean(name = BASE_PACKAGES_BEAN_NAME)//
就是在这里，2.7.8没有这个条件，2.7.15就有了，这是出于什么目的呢？
@Bean
public ServiceClassPostProcessor
serviceClassPostProcessor(@Qualifier(BASE_PACKAGES_BEAN_NAME)
Set<String> packagesToScan) {
return new ServiceClassPostProcessor(packagesToScan);
}
```
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