使用ID自動裝配tcp-outbound-channel-adapter無效

Question

我正在嘗試自動接線定義如下的tcp-inbound-channel-adapter bean。 稍后，我將在某些條件下開始此操作。

<int-ip:tcp-inbound-channel-adapter
    id="inboundClient" channel="replies" connection-factory="client"
    client-mode="true"  auto-startup="false" retry-interval="10000" />

自動裝配為：

@Autowired
@Qualifier("inboundClient")
TcpReceivingChannelAdapter inboundClient;

我的inboundClient始終為null 。

但是，當我執行以下操作時，它可以在沒有NPE的情況下工作， tc具有對象引用並啟動入站適配器並接收數據。

TcpReceivingChannelAdapter tc = (TcpReceivingChannelAdapter)
      context.getBean("inboundClient");
      Thread.sleep(5000); 
      tc.start();

如果您遇到或解決了此問題，請告訴我。

編輯：

我的代碼貼在這里：

  <?xml version="1.0" encoding="UTF-8"?> 
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:int="http://www.springframework.org/schema/integration"
xmlns:int-ip="http://www.springframework.org/schema/integration/ip"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration.xsd
    http://www.springframework.org/schema/integration/ip http://www.springframework.org/schema/integration/ip/spring-integration-ip.xsd">



<context:component-scan base-package="com.tcpclient" />
<context:annotation-config />
<!--Deserializer for incoming data on the socket -->

<bean
    class="org.springframework.integration.ip.tcp.serializer.ByteArraySingleTerminatorSerializer"
    id="serializeAndDeserializer">
    <constructor-arg type="byte" value="0" />
</bean>



<!-- TCP Client configuration -->

<!-- Channels for communication -->

<int:channel id="tcp-client-input" />

<int:channel id="message" />

<int:channel id="message-serviceActivator" />

<int:gateway id="gateway" service-interface="com.tcpclient.ClientGateway"
    default-request-channel="tcp-client-input" default-reply-channel="message" />

<int-ip:tcp-connection-factory id="clientFactory"
    type="client" host="10.255.233.21" port="1234" single-use="false"
    so-timeout="10000" deserializer="serializeAndDeserializer" serializer="serializeAndDeserializer" />

<int-ip:tcp-outbound-channel-adapter
    id="outBoundClient" channel="tcp-client-input" connection-factory="clientFactory"
    retry-interval="60000" auto-startup="false" />

<int-ip:tcp-inbound-channel-adapter
    id="inBoundClient" channel="message" connection-factory="clientFactory"
    client-mode="true" auto-startup="false" retry-interval="60000" />


<int:object-to-string-transformer
    input-channel="message" output-channel="message-serviceActivator" />
<int:service-activator input-channel="message-serviceActivator"
    method="onRtlsMessageArrival">
    <bean class="com.tcpclient.HandleRtlsMessage" />
</int:service-activator></beans>

配置管理器：

@component
public class RtlsConfigManager {

  @Autowired
  @Qualifier("inBoundClient")
  TcpReceivingChannelAdapter inboundClient;

  @Autowired
  @Qualifier("outBoundClient")
  TcpSendingMessageHandler outBoundClient;

  public void initialize(Boolean canStart) {

    try {
      if (canStart) {
        inboundClient.start();
        outBoundClient.start();  
      }  
    } catch (Exception e) {
      logger.error("Error occured while fetching data.");
    }
  }

}

堆棧跟蹤

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.springframework.integration.ip.tcp.TcpSendingMessageHandler] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true), @org.springframework.beans.factory.annotation.Qualifier(value=outBoundClient)}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1373) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1119) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]

如果我從現有代碼中摘下

@Autowired
@Qualifier("outBoundClient")
TcpSendingMessageHandler outBoundClient;

和

outBoundClient.start();

它啟動了我的inBoundClient

我是否嘗試以錯誤的方式自動連接outBoundClient。 如果您需要更多詳細信息，請告訴我。

Answer 1

您應該使用SmartLifeCycle類型SmartLifeCycle不是TcpSendingMessageHandler類型注入這些bean。 接收適配器將以這種方式工作，但是，由於您要使用生命周期的東西，最好縮小類型。

發送處理程序實際上具有Bean名稱outBoundClient.handler但這不是您要啟動/停止的名稱，它包裝在使用者中（該使用者實現SmartLifecyle且類型取決於通道類型；在這種情況下，是EventDrivenConsumer ）。