在java 8函数中注入spring

Question

这是我怎么做的，也是应该做的问题。

我需要在Lambda函数中使用Spring管理的实例。简而言之，我希望DummyBranch、MandrillBranch对象和其他分支由Spring来管理。

public class QOSStrategy {

  public static Function<DistributionMessage, List<Feedback>> executeQOS = (message)-> {
    QOSFilters qosFilters = new QOSFilters();
    List<Branch> providers = qosFilters.getProviderByQOs(message, 
    Arrays.asList(new DummyEmailBranch(), 
        new MandrillBranch(), 
        new EverbrideBranch(), 
        new JavaMailBranch(), 
        new DirectSMSBranch()));
  }
}

我看到的一个选项是从Spring应用程序上下文中获取它。但是有什么方法可以用Annotation来实现呢？

谢谢-Parshu

Answer 1

您可以自动收集实现相同接口的所有bean。

请参阅Spring文档这里。

Answer 2

我创建了一个由spring管理的QOSBean。结果是这样的-

public class QOSStrategy {

public static Function<DistributionMessage,CustomBean, List<Feedback>> executeQOS = (message, qosbean)-> {
QOSFilters qosFilters = (QOSBean)qosbean.getQosFilters();
        List<Branch> providers = qosFilters.getProviderByQOs(message, qosbean.getAllProviders());
}
}



public class QOSBean implements CustomBean {

@Autowired
private QOSFilters qosFilters;

@Autowired
private Branch dummyEmailProvider;
@Autowired
private Branch dummySMSProvider;
@Autowired
private Branch dummyVoiceProvider;
@Autowired
private Branch directSMSProvider;
@Autowired
private Branch everbridgeProvider;
@Autowired
private Branch mandrillProvider;
@Autowired
private Branch javaMailProvider;

public QOSFilters getQosFilters() {
    return qosFilters;
}

public Branch getDummyEmailProvider() {
    return dummyEmailProvider;
}

public Branch getDummySMSProvider() {
    return dummySMSProvider;
}

public List<Branch> getAllProviders (){
    return Arrays.asList(dummyEmailProvider, dummySMSProvider, dummyVoiceProvider, directSMSProvider, everbridgeProvider, mandrillProvider, javaMailProvider);
}

}