rabbitMq 常见问题
1.Server channel error: 406, message: PRECONDITION_FAILED - inequivalent arg 'durable' for exchange 'delay-lxw' in vhost '/': received 'false' but current is 'true'
这是由于服务端和客户端设置的交换机类型不一致所致
rabbitmq 的exchange有以下几种类型:
-
fanout类型 (广播)
-
direct类型 (严格指定)
-
topic类型 (宽松指定)
-
headers类型
2.rabbitmq系列问题解决:406, "PRECONDITION_FAILED - inequivalent arg 'durable'
错误信息翻译过来大致意思就是:当前的queue的durable属性是true,但是我们声明queue时过去的参数确实是false.
这个错误造成的原因是现在页面创建了queue和exchanges,但是代码中声明要使用的queue时,durable属性传递的是false.
要注意的是,生产者和消费者对queue的声明函数里,这个durable必须保持一致。
$exchange->setFlags(AMQP_DURABLE); //添加这行
参考文章:https://www.cnblogs.com/zhaohuaxishi/p/12107392.html
完整实例(生产者)
//推送消息到Mq
public function pushTaskMq()
{
//$exchangeName = 'AMQP default'; //交换机名
//$routeKey = 'delay-lxw-333'; //路由key
$exchangeName = 'task-ems'; //交换机名
$routeKey = 'delay-lxw'; //路由key
$message = 'Hello World 123!'; //消息内容
// 建立TCP连接,配置信息
$connection = new AMQPConnection([
'host' => 'localhost',
'port' => '5672',
'vhost' => '/',
'login' => 'guest',
'password' => 'guest',
'heartbeat' => 30,
]);
//var_dump($connection->connect());
//创建链接
$connection->connect() or die("Cannot connect to the broker!\n");
try {
$channel = new AMQPChannel($connection);
//创建交换机对象
$exchange = new AMQPExchange($channel);
$exchange->setName($exchangeName);
$exchange->setType(AMQP_EX_TYPE_TOPIC);
$exchange->setFlags(AMQP_DURABLE); //添加这行
//AMQP_EX_TYPE_FANOUT //广播
//AMQP_EX_TYPE_DIRECT //严格指定
//AMQP_EX_TYPE_TOPIC 宽松指定)
//AMQP_EX_TYPE_HEADERS //headers类型
$exchange->declareExchange();
//发送消息
echo 'Send Message: ' . $exchange->publish($message, $routeKey) . "\n";
echo "Message Is Sent: " . $message . "\n";
} catch (\AMQPConnectionException $e) {
var_dump($e);
}
$connection->disconnect();// 断开连接
}
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