Spring boot 集成stream配置

1、新建 Maven 项目 stream

2、  pom.xml

<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.java</groupId>
    <artifactId>stream</artifactId>
    <version>1.0.0</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.5.RELEASE</version>
    </parent>


    <!-- 配置版本常量 -->
    <properties>
        <jdk.version>1.8</jdk.version>
    </properties>

    <dependencies>

        <!-- Spring Boot -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-stream-binder-rabbit</artifactId>
            <version>2.0.0.RELEASE</version>
        </dependency>



        <!-- 热部署 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>springloaded</artifactId>
            <version>1.2.8.RELEASE</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <scope>provided</scope>
        </dependency>

    </dependencies>

    <build>
        <finalName>${project.artifactId}</finalName>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>${jdk.version}</source>
                    <target>${jdk.version}</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

3、  StreamStarter.java

package com.java;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * 启动类
 * 
 * @author Logan
 * @since 2020-04-22
 * @version 1.0.0
 */
@SpringBootApplication
public class StreamStarter {

    public static void main(String[] args) {
        SpringApplication.run(StreamStarter.class, args);
    }

}

4、  DemoListener.java

package com.java.stream.listener;

import org.springframework.cloud.stream.annotation.EnableBinding;
import org.springframework.cloud.stream.annotation.StreamListener;
import org.springframework.cloud.stream.messaging.Sink;

import lombok.extern.slf4j.Slf4j;

/**
 * 监听消息
 * 
 * @author Logan
 * @since 2020-04-22
 * @version 1.0.0
 */
@Slf4j
@EnableBinding(Sink.class)
public class DemoListener {

    @StreamListener(Sink.INPUT)
    public void listener(String msg) {
        log.info("收到消息： {}", msg);
    }

}

5、  DemoPublisher.java

package com.java.stream.publisher;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.stream.annotation.EnableBinding;
import org.springframework.cloud.stream.messaging.Source;
import org.springframework.messaging.support.MessageBuilder;

import lombok.extern.slf4j.Slf4j;

/**
 * 发送消息
 * 
 * @author Logan
 * @since 2020-04-22
 * @version 1.0.0
 */
@Slf4j
@EnableBinding(Source.class)
public class DemoPublisher {

    @Autowired
    private Source source;

    public void output(Object message) {
        source.output().send(MessageBuilder.withPayload(message).build());
        log.info("发送消息成功，{}", message);
    }

}

6、  DemoController.java

package com.java.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import com.java.stream.publisher.DemoPublisher;

/**
 * 示例调用发送消息
 * 
 * @author Logan
 * @since 2020-04-22
 * @version 1.0.0
 */
@RestController
public class DemoController {

    @Autowired
    private DemoPublisher publisher;

    @GetMapping("/stream")
    public String demo(String param) {
        publisher.output(param);
        return "发送消息成功";
    }

}

7、   application.yml

spring:
  cloud:
    stream:
      bindings:

        # 发消息
        output:
          destination: demo
          binder: mq-demo


        # 收消息
        input:
          destination: demo
          binder: mq-demo
          group: demo


      rabbit:
        bindings:
          input:
            consumer:
              concurrency: 4
              max-concurrency: 8
              prefetch: 10



      defaultBinder: mq-demo
      binders:
        mq-demo:
          type: rabbit
          environment:
            spring:
              rabbitmq:
                host: 192.168.1.212
                port: 5672
                username: guest
                password: guest
                virtual-host: /

        

8、  运行 StreamStarter.java 启动项目

浏览器输入：

http://localhost:8080/stream?param=test

测试发送消息和接收消息

.