升级到Spring boot 2.1.6后。RELEASE应用程序启动失败：

org.springframework.cloud.stream. binder.AbstractMessageChannelBinder中的字段集成流需要单个bean，但发现了2个：…

我正在尝试使用IntegrationFlowContext类手动注册流。

@Component
public class FlowCreator{

  @Autowired
  private IntegrationFlowContext flowContext;

  @Autowired
  private FlowExample flowExample;


  @PostConstruct
  public void registerIntegrationFlows() {

    flowContext.registration(flowExample.integrationFlow1())
    .id("integrationFlow1")
    .register();

    flowContext.registration(flowExample.integrationFlow2())
    .id("integrationFlow2")
    .register();
}

@Component
public class FlowExample {

  public IntegrationFlow integrationFlow1() {
    return IntegrationFlows.from("input")
        .<Object, Class<?>>route(Object::getClass, routeMessages()) //
        .get();
  }

  private Consumer<RouterSpec<Class<?>, MethodInvokingRouter>> routeMessages() {
    return m -> m //
        .subFlowMapping(Boolean.class, subFlow1()) 
        .subFlowMapping(Integer.class, subFlow2())
        .defaultOutputChannel("discardChannel");
  }

  private IntegrationFlow subFlow1() {
    return sf -> sf.channel("Channel1");
  }

  private IntegrationFlow subFlow2() {
    return sf -> sf.channel("Channel2");
  }

  public IntegrationFlow integrationFlow2() {
    return IntegrationFlows.from("input")
        .channel("channel3")
        .get();
  }
}

现在我收到以下错误：

org.springframework.cloud.stream. binder.AbstractMessageChannelBinder中的字段集成流需要单个bean，但发现有2个：

• IntegrationFlow1. subFlow#0：用null定义
• IntegrationFlow1. subFlow#1：用null定义