10SpringCloud Stream消息驱动

Remember_Ray

发布于 2020-11-04 14:31:39

3170

发布于 2020-11-04 14:31:39

文章被收录于专栏：Ray学习笔记

RabbitMQ环境

RabbitMQ环境已经OK，参考上一章搭建。

建议：新建一个admin账号，本次示例也是基于admin账号

原因：rabbitmq从3.3.0开始禁止使用guest/guest权限通过除localhost外的访问

案例说明

工程中新建三个子模块

cloud-stream-rabbitmq-provider8801,作为生产者进行发消息模块
cloud-stream-rabbitmq-consumer8802，作为消息接受模块
cloud-stream-rabbitmq-consumer8803 作为消息接受模块

cloud-stream-rabbitmq-provider8801

pom

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>SpringCloud_H_2020</artifactId>
        <groupId>com.ray</groupId>
        <version>1.0</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>19-cloud-stream-rabbitmq-provider8801</artifactId>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--监控-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <!--eureka client-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <!--stream rabbit -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-stream-rabbit</artifactId>
        </dependency>
        <!--热部署-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </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>

</project>

yml

注意生产者是output

server:
  port: 8801

spring:
  application:
    name: cloud-stream-provider
  cloud:
    stream:
      binders: #在此处配置要绑定的rabbitmq的服务信息
        defaultRabbit: #表示定义的名称，用于binding整合
          type: rabbit #消息组件类型
          environment: #设置rabbitmq的相关环境配置
            spring:
              rabbitmq:
                host: 192.168.176.128
                port: 5672
                username: admin
                password: admin
      bindings: #服务的整合处理
        output: #这个名字是一个通道的名称，注意生产者是output
          destination: studyExchange #表示要使用的Exchange名称定义
          content-type: application/json #设置消息类型，本次为json，本文要设置为“text/plain”
          binder: defaultRabbit #设置要绑定的消息服务的具体设置


eureka:
  client:
    service-url:
      defaultZone: http://localhost:7001/eureka
  instance:
    lease-renewal-interval-in-seconds: 2 #设置心跳的时间间隔（默认是30S)
    lease-expiration-duration-in-seconds: 5 #如果超过5S间隔就注销节点 默认是90s
    instance-id: send-8801.com #在信息列表时显示主机名称
    prefer-ip-address: true #访问的路径变为IP地址

main

package com.ray.cloud;

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

/**
 * @Description:
 * @Author Ray
 * @Date 2020/10/21 9:13
 * @Version 1.0
 */
@SpringBootApplication
public class StreamMQMain8801 {

    public static void main(String[] args) {
        SpringApplication.run(StreamMQMain8801.class, args);
    }
}

service

package com.ray.cloud.service;

/**
 * @Description: 发送消息接口
 * @Author Ray
 * @Date 2020/10/21 9:14
 * @Version 1.0
 */
public interface IMessageProvider {

    String send();
}

定义消息的推送管道 Source

package com.ray.cloud.service.impl;

import com.ray.cloud.service.IMessageProvider;
import org.springframework.cloud.stream.annotation.EnableBinding;
import org.springframework.cloud.stream.messaging.Source;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.support.MessageBuilder;

import javax.annotation.Resource;
import java.util.UUID;

/**
 * @Description: 发送消息接口实现类
 * @Author Ray
 * @Date 2020/10/21 9:14
 * @Version 1.0
 */
@EnableBinding(Source.class) //定义消息的推送管道
public class MessageProviderImpl implements IMessageProvider {

    @Resource
    private MessageChannel output;  // 消息发送管道

    @Override
    public String send() {
        String serial = UUID.randomUUID().toString();
        output.send(MessageBuilder.withPayload(serial).build());
        System.out.println("serial = " + serial);
        return serial;
    }
}

controller

package com.ray.cloud.controller;

import com.ray.cloud.service.IMessageProvider;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

/**
 * @Description:
 * @Author Ray
 * @Date 2020/10/21 9:17
 * @Version 1.0
 */
@RestController
public class SendMessageController {

    @Resource
    private IMessageProvider messageProvider;

    @GetMapping("/sendMessage")
    public String sendMessage() {
        return messageProvider.send();
    }
}

测试

http://localhost:8801/sendMessage

cloud-stream-rabbitmq-consumer8802

cloud-stream-rabbitmq-consumer8803 参考 8802，只改 yml 文件即可

pom

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>SpringCloud_H_2020</artifactId>
        <groupId>com.ray</groupId>
        <version>1.0</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>20-cloud-stream-rabbitmq-consumer8802</artifactId>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--监控-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <!--eureka client-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <!--stream rabbit -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-stream-rabbit</artifactId>
        </dependency>
        <!--热部署-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </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>


</project>

yml

server:
  port: 8802

spring:
  application:
    name: cloud-stream-consumer
  cloud:
    stream:
      binders: #在此处配置要绑定的rabbitmq的服务信息
        defaultRabbit: #表示定义的名称，用于binding整合
          type: rabbit #消息组件类型
          environment: #设置rabbitmq的相关环境配置
            spring:
              rabbitmq:
                host: 192.168.176.128
                port: 5672
                username: admin
                password: admin
      bindings: #服务的整合处理
        input: #这个名字是一个通道的名称，注意消费者是input
          destination: studyExchange #表示要使用的Exchange名称定义
          content-type: application/json #设置消息类型，本次为json，本文要设置为“text/plain”
          binder: defaultRabbit #设置要绑定的消息服务的具体设置


eureka:
  client:
    service-url:
      defaultZone: http://localhost:7001/eureka
  instance:
    lease-renewal-interval-in-seconds: 2 #设置心跳的时间间隔（默认是30S)
    lease-expiration-duration-in-seconds: 5 #如果超过5S间隔就注销节点 默认是90s
    instance-id: send-8802.com #在信息列表时显示主机名称
    prefer-ip-address: true #访问的路径变为IP地址

main

package com.ray.cloud;

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

/**
 * @Description:
 * @Author Ray
 * @Date 2020/10/21 9:46
 * @Version 1.0
 */
@SpringBootApplication
public class StreamMQMain8802 {

    public static void main(String[] args) {
        SpringApplication.run(StreamMQMain8802.class, args);
    }
}

controller

定义消息的接收管道 Sink

package com.ray.cloud.controller;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.stream.annotation.EnableBinding;
import org.springframework.cloud.stream.annotation.StreamListener;
import org.springframework.cloud.stream.messaging.Sink;
import org.springframework.messaging.Message;
import org.springframework.stereotype.Component;

/**
 * @Description:
 * @Author Ray
 * @Date 2020/10/21 9:47
 * @Version 1.0
 */
@Component
@EnableBinding(Sink.class)
public class ReceiverMessageListenerController {

    @Value("${server.port}")
    private String serverPort;

    @StreamListener(Sink.INPUT)
    public void input(Message<String> message) {
        System.out.println("消费者: " + serverPort + " ---> 接收到的消息: " + message.getPayload());
    }
}

测试

生产者发送消息

http://localhost:8801/sendMessage

消费者接收消息

存在问题

有重复消费问题
消息持久化问题

分组消费与持久化

消费

目前是8802/8803同时收到了，存在重复消费问题

解决方案：分组和持久化属性group，同一个组会发生竞争关系，只有其中一个可以消费。

修改 8802

server:
  port: 8802

spring:
  application:
    name: cloud-stream-consumer
  cloud:
    stream:
      binders: #在此处配置要绑定的rabbitmq的服务信息
        defaultRabbit: #表示定义的名称，用于binding整合
          type: rabbit #消息组件类型
          environment: #设置rabbitmq的相关环境配置
            spring:
              rabbitmq:
                host: 192.168.176.128
                port: 5672
                username: admin
                password: admin
      bindings: #服务的整合处理
        input: #这个名字是一个通道的名称，注意消费者是input
          destination: studyExchange #表示要使用的Exchange名称定义
          content-type: application/json #设置消息类型，本次为json，本文要设置为“text/plain”
          binder: defaultRabbit #设置要绑定的消息服务的具体设置
          group: consumerGroup  # 同一个组会发生竞争关系，只有其中一个可以消费。


eureka:
  client:
    service-url:
      defaultZone: http://localhost:7001/eureka
  instance:
    lease-renewal-interval-in-seconds: 2 #设置心跳的时间间隔（默认是30S)
    lease-expiration-duration-in-seconds: 5 #如果超过5S间隔就注销节点 默认是90s
    instance-id: send-8802.com #在信息列表时显示主机名称
    prefer-ip-address: true #访问的路径变为IP地址

修改 8803

server:
  port: 8803

spring:
  application:
    name: cloud-stream-consumer
  cloud:
    stream:
      binders: #在此处配置要绑定的rabbitmq的服务信息
        defaultRabbit: #表示定义的名称，用于binding整合
          type: rabbit #消息组件类型
          environment: #设置rabbitmq的相关环境配置
            spring:
              rabbitmq:
                host: 192.168.176.128
                port: 5672
                username: admin
                password: admin
      bindings: #服务的整合处理
        input: #这个名字是一个通道的名称，注意消费者是input
          destination: studyExchange #表示要使用的Exchange名称定义
          content-type: application/json #设置消息类型，本次为json，本文要设置为“text/plain”
          binder: defaultRabbit #设置要绑定的消息服务的具体设置
          group: consumerGroup  # 同一个组会发生竞争关系，只有其中一个可以消费。


eureka:
  client:
    service-url:
      defaultZone: http://localhost:7001/eureka
  instance:
    lease-renewal-interval-in-seconds: 2 #设置心跳的时间间隔（默认是30S)
    lease-expiration-duration-in-seconds: 5 #如果超过5S间隔就注销节点 默认是90s
    instance-id: send-8803.com #在信息列表时显示主机名称
    prefer-ip-address: true #访问的路径变为IP地址