消息模板接收让Dispatcher没有订阅频道(Message Template receive gives Dispatcher has no subscribers for channel)

 这是我的弹簧整合入站和出站，从终点获取列表。 
 
<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>
 
 这是我的收件人列表路由器，它将列表发送回请求者，并将列表保存在另一个终点。 
 
<int:recipient-list-router id="syncRouter" input-channel="sync_preferences">
     <int:recipient channel="toWeb_List"/>
    <int:recipient channel="toCloud_Save"/>
</int:recipient-list-router>
 
 我也试图从java代码中调用出站网关，并试图通过在MessageTemplate上使用receive方法来获取来自Web_List通道的响应，这给我错误 
 
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"));
 
 错误 
 
Dispatcher has no subscribers for channel 'application:springboot.toWeb_List'
 
 任何想法我在这里做错了。 

This is my spring-integration inbound and out bound which gets a list from a end point.
 
<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>
 
This is my recipient-list-router which send backs the list to requestor and also saves the list in another end point.
 
<int:recipient-list-router id="syncRouter" input-channel="sync_preferences">
     <int:recipient channel="toWeb_List"/>
    <int:recipient channel="toCloud_Save"/>
</int:recipient-list-router>
 
I am also trying to call the outbound gateway from java code and trying to get the response from toWeb_List channel by using receive method on MessageTemplate, which is giving me error 
 
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"));
 
error 
 
Dispatcher has no subscribers for channel 'application:springboot.toWeb_List'
 
Any Idea what I am doing wrong here.

原文：https://stackoverflow.com/questions/49410896