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Spring Cloud Stream 集成 RocketMQ ​

创建项目，引入依赖 ​

xml
<?xml version="1.0" encoding="UTF-8"?>
<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.example</groupId>
    <artifactId>demo-stream</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo-stream</name>
    <description>demo-stream</description>
    <properties>
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <spring-boot.version>2.7.18</spring-boot.version>
        <spring-cloud-alibaba.version>2021.0.6.1</spring-cloud-alibaba.version>
        <spring-cloud.version>2021.0.9</spring-cloud.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-stream-rocketmq</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>${spring-boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
              </dependency>
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${spring-cloud-alibaba.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <finalName>${project.artifactId}</finalName>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <filtering>true</filtering>
            </resource>
        </resources>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>${spring-boot.version}</version>
                <configuration>
                    <mainClass>com.example.stream.DemoStreamApplication</mainClass>
                    <skip>true</skip>
                </configuration>
                <executions>
                    <execution>
                        <id>repackage</id>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

    <profiles>
        <profile>
            <id>local</id>
            <properties>
                <profiles.active>local</profiles.active>
            </properties>
            <activation>
                <activeByDefault>true</activeByDefault>
            </activation>
        </profile>
        <profile>
            <id>dev</id>
            <properties>
                <profiles.active>dev</profiles.active>
            </properties>
        </profile>
        <profile>
            <id>test</id>
            <properties>
                <profiles.active>test</profiles.active>
            </properties>
        </profile>
    </profiles>

</project>

配置 ​

yaml
spring:
  cloud:
    stream:
      rocketmq:
        binder:
          enabled: true
          name-server: 192.168.118.128:9876
      binders:
        rocketmq:
          type: rocketmq
      bindings:
        topic1-out-0:
          binder: rocketmq
          destination: topic1
        topic2-in-0:
          binder: rocketmq
          destination: topic1
          group: test-group

    nacos:
      server-addr: ${NACOS_HOST:127.0.0.1}:8848
      config:
        namespace: local
        group: DEFAULT_GROUP
        file-extension: yml
        server-addr: ${spring.cloud.nacos.server-addr}
      discovery:
        namespace: ${spring.cloud.nacos.config.namespace}
        group: ${spring.cloud.nacos.config.group}
        server-addr: ${spring.cloud.nacos.server-addr}
        metadata:
          Version: ${service.version}
        ip: ${STREAM_IP:127.0.0.1}
  config:
    import:
      - optional:nacos:${spring.application.name}-@profiles.active@.${spring.cloud.nacos.config.file-extension}

生产者发送消息 ​

java
package com.example.stream.controller;

import org.springframework.cloud.stream.function.StreamBridge;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

@RestController
@RequestMapping("/stream/mq")
public class MQController {
    @Resource
    private StreamBridge streamBridge;

    @PostMapping("/rocket/send")
    public String sendRocketMQ() {
        String bindingName = "topic1-out-0";
        streamBridge.send(bindingName, "rocketmq", "Hello RocketMQ");
        return "success";
    }
}

发送消息

消费者接收消息 ​

java
package com.example.stream.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.messaging.Message;

import java.util.function.Consumer;

@Configuration
public class RocketConfig {
    @Bean
    public Consumer<Message<String>> topic2() {
        return message -> {
            System.out.println("从topic2收到消息Payload: " + message.getPayload());
            System.out.println("从topic2收到消息Header: " + message.getHeaders());
        };
    }
}

接收消息