Spring integration 消息模板接收使Dispatcher没有通道的订户

这是我的SpringIntegrationInboundandOutbound，它从一个端点获取一个列表

<http:inbound-gateway id="webListGateway"
        request-channel="fromWeb_List" 
        reply-channel="toWeb_List" 
        path="/api/profile/V1/get"
        supported-methods="GET">
       <http:header name="container" expression="#pathVariables.container"/>
       <http:header name="groupName" expression="#pathVariables.groupName"/>
       <http:header name="userId" expression="#pathVariables.userId"/>
      </http:inbound-gateway>

    <int:header-enricher input-channel="fromWeb_List" output-channel="toCloud_List">
        <int:header name="apikey" value=“1234”/>
    </int:header-enricher>

    <http:outbound-gateway id="profileListGateway"
        request-channel="toCloud_List"
        reply-channel="sync_preferences"
        url=“localhost:8081/containers/{container}/groups/{groupName}/values/hierarchy/{userId}"
        http-method="GET"
        expected-response-type="java.lang.String"
        charset="UTF-8"
        extract-request-payload="false"
        header-mapper="headerMapper"
        encode-uri="true" >
        <http:uri-variable name="container" expression="headers.container"/>
        <http:uri-variable name="groupName" expression="headers.groupName"/>
        <http:uri-variable name="userId" expression="headers.userId"/>
    </http:outbound-gateway>

<int:recipient-list-router id="syncRouter" input-channel="sync_preferences">
     <int:recipient channel="toWeb_List"/>
    <int:recipient channel="toCloud_Save"/>
</int:recipient-list-router>

---

知道我做错了什么吗。

您不能将

DirectChannel

用于

MessagingGateway.receive（）

：

桥接器

是将信息从输入通道转移到输出通道（如果存在）的组件。否则，它将参考

MessageHeaders

以获取

replyChannel

值。当您直接从Java调用时，这是通过入站请求-应答组件（如

或普通

）来填充的

---

请参阅。

中的详细信息。当我向入站发出http请求时，它工作正常，因为它有订阅者。当我使用java从系统中调用时，我并没有经过入站，而是直接从标头enricher到出站。是否有任何方法可以将响应发送回java调用者，而无需通过入站请求。请参阅我回答中的更新。集成非常棒，使用了桥接器，然后使用template.sendAndReceive，它可以工作。非常感谢您的快速回复。

MessagingTemplate template = new MessagingTemplate();
        Message<String> message1 = MessageBuilder.withPayload("")
                .setHeader("container", “fwd”)
                .setHeader("groupName", “foo”)
                .setHeader("userId", “user”)
                .build();
        template.send((MessageChannel) CONTEXT.getBean("fromWeb_List"),message1);
        PreList pre = (PreList) template.receive((MessageChannel)CONTEXT.getBean("toWeb_List"));

Dispatcher has no subscribers for channel 'application:springboot.toWeb_List'

protected final Message<?> doReceive(MessageChannel channel, long timeout) {
    Assert.notNull(channel, "MessageChannel is required");
    Assert.state(channel instanceof PollableChannel, "A PollableChannel is required to receive messages");

<int:recipient-list-router id="syncRouter" input-channel="sync_preferences">
     <int:recipient channel="toWeb_List"/>
    <int:recipient channel="toCloud_Save"/>
</int:recipient-list-router>

<int:bridge input-channel="toWeb_List"/>