用RabbitMQ实现Spring云流连接

Question

spring.rabbitmq.host=localhost
spring.rabbitmq.port=5672
spring.rabbitmq.username=guest
spring.rabbitmq.password=guest
spring.cloud.stream.bindings.greetingChannel.destination = greetings
server.port=8080

package com.gateway.cloudstreamproducerrabbitmq;

import org.springframework.cloud.stream.annotation.Input;
import org.springframework.cloud.stream.annotation.Output;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.SubscribableChannel;

public interface HelloBinding {

    @Output("greetingChannel")
    MessageChannel greeting();
}

package com.gateway.cloudstreamproducerrabbitmq;

import com.gateway.cloudstreamproducerrabbitmq.HelloBinding;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.support.MessageBuilder;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class ProducerController {

    private MessageChannel greet;

    public ProducerController(HelloBinding binding) {
        greet = binding.greeting();
    }

    @GetMapping("/greet/{name}")
    public void publish(@PathVariable String name) {
        String greeting = "Hello, " + name + "!";
        Message<String> msg = MessageBuilder.withPayload(greeting)
                .build();
        this.greet.send(msg);
    }
}

Answer 1

要使用rabbitmq绑定器实现来设置spring cloud stream，您需要在pom.xml1中进行配置。

 <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-stream</artifactId>
 </dependency>
 <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-stream-binder-rabbit</artifactId>
 </dependency>
 <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-amqp</artifactId>
 </dependency>

然后在application.properties/yaml中定义

2.

spring:
    cloud:
        stream:
            bindings:
                greetingChannel
                    destination: test.greeting
                    group: queue
            rabbit:
                bindings:
                    greetingChannel:
                        producer:
                            transacted: true //optional

helloBinding.greeting().send(MessageBuilder
                .withPayload(...)
                .build());