Spring 引导使用bean inside configuration

Question

@Configuration
@AutoConfigureOrder()
@ComponentScan("scanPath")
public class AutoConfiguration {    

    @Autowired
    private Factory   factory;

    @Bean("factory")
    @ConditionalOnProperty(prefix = "application.middleware", name = "enabled", havingValue = "true")
    public Factory getFactory() {
        return new Factory();
    }

    @Bean("binding")
    @DependsOn("factory")
    public Binding getMarketingDataSource() {
        return factory.getInstance("bindingName");
    }
}

我想： 1. init bean factory（如果没有找到值可以为空） 2. 由 bean 绑定自动装配和使用

但现在我遇到异常

Caused by: org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'factory': Requested bean is currently in creation: Is there an unresolvable circular reference?

所以我想要的是在绑定中使用工厂，如何实现？谢谢！

Answer 1

使用getFactory()获取Bean（并删除@Autowired）：

public Binding getMarketingDataSource() {
    return getFactory().getInstance("bindingName");

Answer 2

在签名中连接工厂，现在Spring看到绑定需要工厂并为您设置它：

@Bean("binding")
public Binding getMarketingDataSource(Factory factory) {
  return factory.getInstance("bindingName");
}

Spring 引导使用bean inside configuration

Spring boot use bean inside configuration

java

spring

autowired

spring-boot