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嗨我试图使用弹簧集成来接收MQTT消息,处理它们并发布到另一个主题。春季Mqtt集成:出站主题问题
这里是integration.xml:
<int-mqtt:outbound-channel-adapter id="mqtt-publish"
client-id="spring-foo-1"
client-factory="clientFactory"
auto-startup="true"
url="tcp://localhost:1883"
default-qos="0"
default-retained="true"
default-topic="tweets/akki" />
<int-mqtt:message-driven-channel-adapter id="oneTopicAdapter"
client-id="spring-foo-2"
client-factory="clientFactory"
auto-startup="true"
url="tcp://localhost:1883"
topics="mqtt/publish"
/>
<int:service-activator input-channel="oneTopicAdapter" method="logMessages" ref="mqttLogger" output-channel="mqtt-publish"></int:service-activator>
<bean id="mqttLogger" class="hello.mqttReceiver" />
而且mqttReceiver.java:
package hello;
public class mqttReceiver {
public String logMessages(String a){
String processed_data = a; //TODO Process Data
return processed_data;
}
}
以下是问题,我面对:
- 的
processed_data
被送到mqtt/publish and not mqtt/akki - The
processed_data
没有发布的信息,但很多时候
您也可以使用头,浓缩塔更换主题标题前使用
<int:header-filter header-names="mqtt_topic"/>
(覆盖设置为true)。 –