与 Mule/ActiveMQ 和 C++ Stomp 的客户端通信
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【中文标题】与 Mule/ActiveMQ 和 C++ Stomp 的客户端通信【英文标题】:Client communication with Mule/ActiveMQ and C++ Stomp 【发布时间】:2016-08-27 17:53:10 【问题描述】:我有一个向队列发送消息的外部 C++ STOMP 客户端
myqueue
并订阅一个主题
mytopic
配置接收消息的流程(eclipse mars中的Mule插件),修改消息并传输回显响应:
<jms:activemq-connector name="Active_MQ" specification="1.1" brokerURL="tcp://localhost:61616" validateConnections="true" doc:name="Active MQ"/>
<http:listener-config name="HTTP" host="localhost" port="8081" doc:name="HTTP Listener Configuration"/>
<flow name="jmsFlow">
<jms:inbound-endpoint queue="myqueue" connector-ref="Active_MQ" doc:name="JMS">
<jms:transaction action="NONE"/>
</jms:inbound-endpoint>
<logger message="#[string: Logger1 Response: #[payload]]" level="INFO" doc:name="Logger1"/>
<response>
<echo-component doc:name="Echo"/>
</response>
<component class="org.mule.java.JavaClient" doc:name="Java"/>
</flow>
C++ STOMP 客户端:
static BoostStomp* stomp_client;
static string notifications_topic = "mytopic";
static string registration_queue = "myqueue";
static string result("");
static int number = 0;
bool subscription_callback(STOMP::Frame& _frame)
number = _frame.body().v.size();
result = _frame.body().c_str();
return(true);
//int main(int argc, char *argv[])
int main(int argc, char *argv[])
string stomp_host = "localhost";
int stomp_port = 61613;
char* msg = argv[0];
int nmbr = 1;
char* mymsg = new char[nmbr];
strncpy(mymsg,msg,nmbr);
mymsg[nmbr] = '\0';
string msgstr = string(mymsg);
try
// initiate a new BoostStomp client
stomp_client = new BoostStomp(stomp_host, stomp_port);
// start the client, (by connecting to the STOMP server)
stomp_client->start();//(user, pass);
// subscribe to a channel
stomp_client->subscribe(notifications_topic, (STOMP::pfnOnStompMessage_t) &subscription_callback);
// construct a headermap
STOMP::hdrmap headers;
string body = string("mymessage");
// add an outgoing message to the queue
stomp_client->send(registration_queue, headers, body);
Sleep(10000);
nmbr = number;
strncpy(msg,result.c_str(),nmbr);
msg[nmbr] = '\0';
cout << "return message is " << result.c_str();
result.clear();
Sleep(10000);
stomp_client->unsubscribe(notifications_topic);
Sleep(1000);
stomp_client->stop();
delete stomp_client;
catch (std::exception& e)
cerr << "Error in BoostStomp: " << e.what() << "\n";
return 1;
cout << "Call of test works!" << endl;
return 0;
我不确定如何将修改后的消息发送到主题
mytopic
而不是回声响应。有什么建议吗?
也许,另一种选择是使用实现 STOMP 消息发送的 Java 应用:
StompConnection connection = new StompConnection();
connection.open("localhost", 61613);
connection.connect("","");
connection.send("/mytopic", msg.toString());
接收消息
connection.subscribe("/mytopic", Subscribe.AckModeValues.CLIENT);
StompFrame frame = connection.receive();
System.out.println("JavaClient received message: " + frame.getBody());
connection.disconnect();
有效,但外部 STOMP 客户端仍然没有收到它。 STOMP cout 是:
[12:03:28: 00625D48] BoostStomp:starting...
[12:03:28: 00625D48] BoostStomp:STOMP: Connecting to [::1]:61613...
[12:03:28: 00625D48] BoostStomp:STOMP TCP connection to [::1]:61613 is active
[12:03:28: 00625D48] BoostStomp:Sending CONNECT frame...
[12:03:28: 0062E698] BoostStomp:Worker thread: starting...
[12:03:28: 0062E698] BoostStomp:server supports STOMP version 1.1
waiting for answer
[12:03:29: 0062E698] BoostStomp:Sending SUBSCRIBE frame...
[12:03:29: 0062E698] BoostStomp:Sent!
[12:03:29: 0062E698] BoostStomp:Sending SEND frame...
[12:03:29: 0062E698] BoostStomp:Sent!
【问题讨论】:
【参考方案1】:下面的截图是关于如何使用 JMS(ActiveMQ) 主题向订阅者发送消息的示例。
Active MQ send topic
【讨论】:
谢谢,但是客户端订阅的mytopic没有收到消息:'return message is ='。主机和端口呢? ESB 和客户端之间的设置是否匹配?客户端使用 boost。嗨@LeBro,请参阅下面的示例源代码示例:
<?xml version="1.0" encoding="UTF-8"?>
<mule xmlns:jms="http://www.mulesoft.org/schema/mule/jms" xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"
xmlns:spring="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd
http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd
http://www.mulesoft.org/schema/mule/jms http://www.mulesoft.org/schema/mule/jms/current/mule-jms.xsd">
<jms:activemq-connector name="Active_MQ" brokerURL="tcp://localhost:61616" validateConnections="true" doc:name="Active MQ"/>
<jms:activemq-connector name="Active_MQ_Outbound" brokerURL="tcp://localhost:61616" validateConnections="true" doc:name="Active MQ"/>
<flow name="active-mq-testFlow">
<jms:inbound-endpoint queue="myqueue" connector-ref="Active_MQ" doc:name="JMS"/>
<logger level="INFO" doc:name="Logger"/>
<set-payload value="#['Transformed Message : ' + payload]" doc:name="Set Payload"/>
<jms:outbound-endpoint topic="mytopic" connector-ref="Active_MQ_Outbound" doc:name="JMS Outbound"/>
</flow>
</mule>
尝试使用此 url 访问您的本地 ActiveMQ: http://localhost:8161/
然后尝试运行 mule 应用程序。
mule 应用成功消费消息,然后将其发送到主题。
【讨论】:
嗨@Arden Vallente。到目前为止已经知道了,但是客户端仍然没有收到消息。在本地ActiveMQ上可以看到。我想问题出在不同端口的主题上。带有 61616 的 ActiveMQ 和 Mule ESB 以及带有 61613 的 Stomp 客户端!?以上是关于与 Mule/ActiveMQ 和 C++ Stomp 的客户端通信的主要内容,如果未能解决你的问题,请参考以下文章