Spring Cloud Stream 与 RabbitMQ 的连接

Question

有一个简单的 Spring-Cloud-Stream 项目，我尝试连接 RabbitMQ，它说它 connected 但它不工作。我在代码中做错了什么吗？

Application.properties

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

HelloBinding 接口

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();
}

ProducerController

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);
    }
}

最后我在启动应用程序的主 class 中有一个 @EnableBinding(HelloBinding.class)。

Answer 1

要使用 rabbitmq 活页夹实现设置 spring 云流，您需要在 pom.xml 中进行配置 1.

 <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>

然后你在你的应用程序中定义它。properties/yaml

2.

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

EnableBinding(HelloBinding.class)
注入绑定并使用它

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

rabbitMQ 属性的设置

Spring Cloud Stream 与 RabbitMQ 的连接

Spring Cloud Stream connection with RabbitMQ

java

connection

spring

rabbitmq

spring-cloud-stream