1.概述
SpringCloud Stream框架抽象出了三个最基础的概念来对各种消息中间件提供统一调用：
- Destination Binders: 负责集成外部消息系统的组件。
- Destination Binding: 由Binders创建的，负责沟通外部消息系统、消息发送者和消息消费者的桥梁。
- Message: 消息发送者与消息消费者沟通的简单数据结构。
2.创建生产者项目
创建项目rabbitmq-stream-sender
- pom.xml添加依赖
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.olive</groupId> <artifactId>rabbitmq-stream-sender</artifactId> <version>0.0.1-SNAPSHOT</version> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.7.7</version> <relativePath /> </parent> <dependencies> <!--rabbitMQ相关--> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-stream</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-stream-rabbit</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-web</artifactId> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.8</source> <target>1.8</target> </configuration> </plugin> </plugins> </build> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>2021.0.6</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> </project>
- application.yml 配置
spring: cloud: stream: bindings: output: destination: rabbitmqExchange content-type: text/plain group: stream rabbitmq: username: admin password: admin123 port: 5672 host: 127.0.0.1 virtual-host: / server: port: 8081
- 生产者
package com.olive.service; import org.springframework.cloud.stream.annotation.EnableBinding; import org.springframework.cloud.stream.messaging.Source; import org.springframework.stereotype.Component; @Component @EnableBinding(Source.class) public class MessageProducer { }
- 发送消息接口
package com.olive.controller; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.cloud.stream.messaging.Source; import org.springframework.integration.support.MessageBuilder; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController public class MessageController { @Autowired private Source source; @GetMapping("/api/send") public String send(String message) { MessageBuilder<String> messageBuilder = MessageBuilder.withPayload(message); source.output().send(messageBuilder.build()); return "success" ; } }
3.创建消费者者项目
创建项目rabbitmq-stream-revicer
- pom.xml添加依赖
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.olive</groupId> <artifactId>rabbitmq-stream-revicer</artifactId> <version>0.0.1-SNAPSHOT</version> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.7.7</version> <relativePath /> </parent> <dependencies> <!--rabbitMQ相关--> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-stream-rabbit</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.8</source> <target>1.8</target> </configuration> </plugin> </plugins> </build> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>2021.0.6</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> </project>
- application.yml 配置
spring: cloud: stream: bindings: input: destination: rabbitmqExchange content-type: text/plain group: stream rabbitmq: username: admin password: admin123 port: 5672 host: 127.0.0.1 virtual-host: / server: port: 8082
- 消费者
package com.olive.service; import org.springframework.cloud.stream.annotation.EnableBinding; import org.springframework.cloud.stream.annotation.StreamListener; import org.springframework.cloud.stream.messaging.Sink; import org.springframework.stereotype.Component; @Component @EnableBinding(Sink.class) public class MessageConsumer { @StreamListener(Sink.INPUT) public void process(Object message) { System.out.println("received message: " + message); } }
4. 验证
- 分别启动
rabbitmq-stream-sender和rabbitmq-stream-revicer项目 - 访问
http://127.0.0.1:8081/api/send?message=hello world stream
