Question

目前我有一个运行的Spring Boot应用程序，它以特定用户身份登录到XMPP服务器。我可以向远程客户端等发送消息。但是现在我想在服务器端接收消息，如果客户端正在向通过Spring Boot登录的特定用户发送消息。

我尝试连接实际接收消息的服务激活器，但消息内容被放入“to”字段，“from”属性为null。所以我很困惑如何挂钩......

以下是传入消息适配器的xmpp配置：

<!-- incoming xmpp configuration -->
<int-xmpp:inbound-channel-adapter auto-startup="true" xmpp-connection="xmppConnection" channel="incomingMessagesChannel"/>
<channel id="incomingMessagesChannel">
    <interceptors>
        <wire-tap channel="incomingMessagesLogger"/>
    </interceptors>
</channel>
<logging-channel-adapter id="incomingMessagesLogger" logger-name="incoming logger" log-full-message="true" />
<service-activator ref="messageEventHandler" method="handle" input-channel="incomingMessagesChannel"/>

处理传入消息的类：

import org.jivesoftware.smack.packet.Message;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

@Component
public class MessageEventHandler {

    private static final Logger logger = LoggerFactory.getLogger(MessageEventHandler.class);

    public void handle(Message message) {
        System.out.println(message.getFrom());
        System.out.println(message.getTo());
        System.out.println(message.getBody());
    }
}

所以当我向服务器发送消息时输出：

System.out.println(message.getFrom());是null
System.out.println(message.getTo());是实际的消息内容
System.out.println(message.getBody());是null

我错过了什么？

Answer 1

解决此问题的方法是使用正确的Message实现！

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageHeaders;
import org.springframework.stereotype.Component;

@Component
public class MessageEventHandler {

    private static final Logger logger = LoggerFactory.getLogger(MessageEventHandler.class);

    public void handle(Message message) {
        MessageHeaders headers = message.getHeaders();

        String from = (String) headers.get("xmpp_from");
        String to = (String) headers.get("xmpp_to");
        Long timestamp = (Long) headers.get("timestamp");
        String payload = (String) message.getPayload();

        logger.debug("Received a message from: {} with payload: {}", from, payload);
    }
}

如何接收/处理发送给运行Spring Boot / Integration

1 个答案: