spring cloud stream整合

spring cloud stream整体架构核心概念图：

图一：消息的发送端和接收端可以是不同的中间件

图二：

图三：在消息的发送之前和消息的接收端套了一层管道

• @Output:输出注释，用于定义发送消息接口
• @Input:输入注解，用于定义消息的消费者接口
• @StreamListener:用于定义监听方法的注解

• springcloudstream框架有一个非常大的问题就是不能实现可靠性消息投递，会存在少量消息丢失的问题
  这个原因是springcloudstream框架为了和kafka兼顾所以在实际工作中使用它的目的是针对高性能的消息通信的
  这点就是当前版本的springcloudstream的定位

Barista接口是定义作为后面类的参数，这一接口来定义通道类型和通道名称（该名称可以自定义）
通道名称是作为配置用，通道类型则决定了app会使用这一通道进行发送消息还是从中接收消息

引入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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.dwz</groupId>
  <artifactId>rabbitmq-springcloudstream-producer</artifactId>
  <version>0.0.1-SNAPSHOT</version>

  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.6.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
  </parent>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <java.version>1.8</java.version>
  </properties>

  <dependencies>
      <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
        <version>2.1.6.RELEASE</version>
    </dependency>

      <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>

    <!-- https://mvnrepository.com/artifact/com.rabbitmq/amqp-client -->
    <dependency>
        <groupId>com.rabbitmq</groupId>
        <artifactId>amqp-client</artifactId>
        <version>5.7.3</version>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-amqp</artifactId>
    </dependency>

    <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core -->
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-core</artifactId>
        <version>2.10.0</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.10.0</version>
    </dependency>

     <!--spring boot热部署插件-->
      <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <optional>true</optional>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-stream-rabbit -->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-stream-rabbit</artifactId>
        <version>2.1.4.RELEASE</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-actuator -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
        <version>2.1.6.RELEASE</version>
    </dependency>
  </dependencies>

  <build>
      <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
      </plugins>
  </build>
</project>

生产者代码

配置application.properties

server.port=8001
server.servlet.context-path=/producer

spring.application.name=producer
spring.cloud.stream.bindings.output_channel.destination=exchange-4
spring.cloud.stream.bindings.output_channel.group=queue-4
spring.cloud.stream.bindings.output_channel.binder=rabbit_cluster

#表明使用的环境是rabbit
spring.cloud.stream.binders.rabbit_cluster.type=rabbit
spring.cloud.stream.binders.rabbit_cluster.environment.spring.rabbitmq.addresses=127.0.0.1:5672
spring.cloud.stream.binders.rabbit_cluster.environment.spring.rabbitmq.username=root_dwz
spring.cloud.stream.binders.rabbit_cluster.environment.spring.rabbitmq.password=123456
spring.cloud.stream.binders.rabbit_cluster.environment.spring.rabbitmq.virtual-host=/vhost_dwz

Barista接口

package com.dwz.rabbitmq.stream;

import org.springframework.cloud.stream.annotation.Output;
import org.springframework.messaging.MessageChannel;
public interface Barista {

    String OUTPUT_CHANNEL = "output_channel";

    //注解@Output表明了它是一个输出类型的通道类，名字output_channel。这一名字与app1中通道名一致，表明注入了
    //一个名字为output_channel的通道
    @Output(Barista.OUTPUT_CHANNEL)
    MessageChannel logoutput();
}

发送消息的方法

package com.dwz.rabbitmq.stream;

import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.stream.annotation.EnableBinding;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageHeaders;
import org.springframework.messaging.support.MessageBuilder;
import org.springframework.stereotype.Service;

@EnableBinding(Barista.class)
@Service
public class RabbitmqSender {
    @Autowired
    private Barista barista;

    //发送消息
    public String sendMessage(Object message, Map<String, Object> properties) throws Exception {
        try {
            MessageHeaders mhs = new MessageHeaders(properties);
            Message msg = MessageBuilder.createMessage(message, mhs);
            boolean sendStatus = barista.logoutput().send(msg);
            System.err.println("-------------------sending---------------------");
            System.err.println("发送数据：" + message + ",sendStatus:" + sendStatus);
            return null;
        } catch (Exception e) {
            System.err.println("---------------------error--------------------------");
            e.printStackTrace();
            throw new RuntimeException(e.getMessage());
        }
    }
}    

测试代码

package com.dwz.rabbitmq;

import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import org.apache.http.client.utils.DateUtils;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import com.dwz.rabbitmq.stream.RabbitmqSender;
@RunWith(SpringRunner.class)
@SpringBootTest
public class Testdd {

    @Autowired
    private RabbitmqSender rabbitmqSender;

    @Test
    public void sendMessageTest1() {
        for(int i = 0; i < 5; i++) {
            try {
                Map<String, Object> properties = new HashMap<>();
                properties.put("SERIAL_NUMBER", "12345");
                properties.put("BANK_NUMBER", "abc");
                properties.put("PLAT_SEND_TIME", DateUtils.formatDate(new Date(), "yyyy-MM-dd HH:mm:ss:SSS"));
                rabbitmqSender.sendMessage("Hello, I am amqp sender num:" + i, properties);
            } catch (Exception e) {
                System.err.println("------------------error-------------------");
                e.printStackTrace();
            }
        }
    }
}

消费端代码

配置application.properties

server.port=8002
server.servlet.context-path=/consumer

spring.application.name=consumer
spring.cloud.stream.bindings.input_channel.destination=exchange-4
spring.cloud.stream.bindings.input_channel.group=queue-4
spring.cloud.stream.bindings.input_channel.binder=rabbit_cluster
spring.cloud.stream.bindings.input_channel.consumer.concurrency=1
spring.cloud.stream.rabbit.bindings.input_channel.consumer.requeue-rejected=false
spring.cloud.stream.rabbit.bindings.input_channel.consumer.acknowledge-mode=manual
#设置断开重连
spring.cloud.stream.rabbit.bindings.input_channel.consumer.recovery-interval=3000
#启用持久化订阅
spring.cloud.stream.rabbit.bindings.input_channel.consumer.durable-subscription=true
#设置最大监听数
spring.cloud.stream.rabbit.bindings.input_channel.consumer.max-concurrency=5

spring.cloud.stream.binders.rabbit_cluster.type=rabbit
spring.cloud.stream.binders.rabbit_cluster.environment.spring.rabbitmq.addresses=127.0.0.1:5672
spring.cloud.stream.binders.rabbit_cluster.environment.spring.rabbitmq.username=root_dwz
spring.cloud.stream.binders.rabbit_cluster.environment.spring.rabbitmq.password=123456
spring.cloud.stream.binders.rabbit_cluster.environment.spring.rabbitmq.virtual-host=/vhost_dwz

Barista接口

package com.dwz.rabbitmq.stream;

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

public interface Barista {

    String INPUT_CHANNEL = "input_channel";

    //注解@Input声明了它是一个输入类型的通道，名字是input_channel
    @Input(Barista.INPUT_CHANNEL)
    SubscribableChannel loginput();
}

接收消息的方法

package com.dwz.rabbitmq.stream;

import org.springframework.amqp.support.AmqpHeaders;
import org.springframework.cloud.stream.annotation.EnableBinding;
import org.springframework.cloud.stream.annotation.StreamListener;
import org.springframework.messaging.Message;
import org.springframework.stereotype.Component;

import com.rabbitmq.client.Channel;

@EnableBinding(Barista.class)
@Component
public class RabbitmqReceiver {

    @StreamListener(Barista.INPUT_CHANNEL)
    public void receiver(Message message) throws Exception {
        Channel channel = (Channel)message.getHeaders().get(AmqpHeaders.CHANNEL);
        Long deliveryTag = (Long)message.getHeaders().get(AmqpHeaders.DELIVERY_TAG);
        System.err.println("Input Stream 1 接受数据：" + message);
        System.err.println("消费完毕---------------");
        channel.basicAck(deliveryTag, false);
    }
}