SpringCloud系列（49）--SpringCloud Stream消息驱动之实现生产者

<?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>springcloud01</artifactId>
        <groupId>com.ken.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

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

    <dependencies>
        <!--以下依赖都没写版本号，没写版本号的情况下会引用父项目的版本-->
        <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 Clinet-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <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>
        <!--lombok插件-->
        <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>

server:
  port: 8801

spring:
  application:
    name: cloud-stream-provider
  cloud:
    stream:
      #在此处配置要绑定的rabbitmq的服务信息
      binders:
        #表示定义的名称，用于于binding整合
        defaultRabbit:
          #消息组件类型，表示用到的组件是rabbit
          type: rabbit
          #设置rabbitmq的相关的环境配置
          environment:
            spring:
              rabbitmq:
                host: localhost
                port: 5672
                username: guest
                password: guest
      #服务的整合处理
      bindings:
        #这个名字是一个通道的名称
        output:
          #表示要使用的Exchange名称定义
          destination: studyExchange
          #设置消息类型，本次为json，文本则设置"text/plain"
          content-type: application/json
          #设置要绑定的消息服务的具体设置
          binder: defaultRabbit

eureka:
  #客户端进行Eureka注册的配置
  client:
    service-url:
      defaultZone: http://localhost:7001/eureka
  instance:
    #设置心跳的时间间隔（默认是30秒)
    lease-renewal-interval-in-seconds: 2
    #如果现在超过了5秒的间隔（默认是90秒)
    lease-expiration-duration-in-seconds: 5
    #在信息列表时显示主机名称
    instance-id: send-8001.com
    #访问的路径变为IP地址
    prefer-ip-address: true

package com.ken.springcloud;

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

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

package com.ken.springcloud.service;

public interface IMessageProvider {

    public String send();

}

package com.ken.springcloud.service.impl;

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

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

//@EnableBinding(Source.class)用于定义消息的推送管道
@EnableBinding(Source.class)
public class IMessageProviderImpl implements IMessageProvider {

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

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

package com.ken.springcloud.controller;

import com.ken.springcloud.service.IMessageProvider;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

@RestController
public class SendMessageController {

    @Resource
    private IMessageProvider iMessageProvider;

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

}