RabbitMQ Golang教程
RabbitMQ Golang教程
首先，使用go get安装amqp
- 1
go get github.com/streadway/amqp
发送
我们将消息发布者（发送者）称为 send.go，将消息消费者（接收者）称为receive.go。发布者将连接到RabbitMQ，发送一条消息，然后退出。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 | package mainimport ( "github.com/streadway/amqp" "log")func failOnError(err error, msg string) { if err != nil { log.Fatalf("%s: %s", msg, err) }}func main() { conn,err := amqp.Dial("amqp://admin:admin@xx.xxx.xxx.xxx:5672/") failOnError(err,"Failed to connect to RabbitMQ") defer conn.Close() ch,err := conn.Channel() failOnError(err, "Failed to open a channel") defer ch.Close() q, err := ch.QueueDeclare( "hello", // name false, // durable false, // delete when unused false, // exclusive false, // no-wait nil, // arguments ) failOnError(err, "Failed to declare a queue") body := "Hello World!" err = ch.Publish( "", // exchange q.Name, // routing key false, // mandatory false, // immediate amqp.Publishing{ ContentType: "text/plain", Body: []byte(body), }) failOnError(err, "Failed to publish a message") log.Printf(" [x] Sent %s", body)} |
接收
上面是我们的发布者。我们的消费者监听来自RabbitMQ的消息，因此与发布单个消息的发布者不同，我们将使消费者保持运行状态以监听消息并打印出来。
该代码（在receive.go中）具有与send相同的导入和帮助功能：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | package mainimport ( "github.com/streadway/amqp" "log")func failOnErrors(err error, msg string) { if err != nil { log.Fatalf("%s: %s", msg, err) }}func main() { conn,err := amqp.Dial("amqp://admin:admin@xx.xxx.xxx.xxx:5672/") failOnErrors(err, "Failed to connect to RabbitMQ") defer conn.Close() ch, err := conn.Channel() failOnErrors(err, "Failed to open a channel") defer ch.Close() q, err := ch.QueueDeclare( "hello", // name false, // durable false, // delete when unused false, // exclusive false, // no-wait nil, // arguments ) failOnErrors(err, "Failed to declare a queue") msgs, err := ch.Consume( q.Name, // queue "", // consumer true, // auto-ack false, // exclusive false, // no-local false, // no-wait nil, // args ) failOnErrors(err, "Failed to register a consumer") forever := make(chan bool) go func() { for d := range msgs { log.Printf("Received a message: %s", d.Body) } }() log.Printf(" [*] Waiting for messages. To exit press CTRL+C") <-forever} |