（十七）java版电子商务spring cloud分布式微服务b2b2c社交电商-消息驱动 Spring Cloud Stream...

深碍√TFBOYSˉ_ 2022-10-01 12:40 94阅读 0赞

**Spring cloud b2b2c电子商务社交平台源码请加企鹅求求：一零三八七七四六二六**。在使用spring cloud云架构的时候，我们不得不使用Spring cloud Stream，因为消息中间件的使用在项目中无处不在，我们公司后面做了娱乐方面的APP，在使用spring cloud做架构的时候，其中消息的异步通知，业务的异步处理都需要使用消息中间件机制。spring cloud的官方给出的集成建议（使用rabbit mq和kafka），我看了一下源码和配置，只要把rabbit mq集成，kafka只是换了一个pom配置jar包而已，闲话少说，我们就直接进入配置实施：

1. 简介：

Spring cloud Stream 数据流操作开发包，封装了与Redis,Rabbit、Kafka等发送接收消息。

2. 使用工具：

rabbit，具体的下载和安装细节我这里不做太多讲解，网上的实例太多了

3. 创建commonservice-mq-producer消息的发送者项目，在pom里面配置stream-rabbit的依赖

<dependency> 
 <groupId>org.springframework.cloud</groupId> 
 <artifactId>spring-cloud-starter-stream-rabbit</artifactId> 
 </dependency> 
 复制代码

4. 在yml文件里面配置rabbit mq

server: 
 port: 5666 
 spring: 
 application: 
 name: commonservice-mq-producer 
 profiles: 
 active: dev 
 cloud: 
 config: 
 discovery: 
 enabled: true 
 service-id: commonservice-config-server 
 # rabbitmq和kafka都有相关配置的默认值，如果修改，可以再次进行配置 
 stream: 
 bindings: 
 mqScoreOutput: 
 destination: honghu_exchange 
 contentType: application/json 
 
 rabbitmq: 
 host: localhost 
 port: 5672 
 username: honghu 
 password: honghu 
 eureka: 
 client: 
 service-url: 
 defaultZone: http://honghu:123456@localhost:8761/eureka 
 instance: 
 prefer-ip-address: true 
 复制代码

5. 定义接口ProducerService

package com.honghu.cloud.producer; 
 
 import org.springframework.cloud.stream.annotation.Output; 
 import org.springframework.messaging.SubscribableChannel; 
 
 public interface ProducerService { 
 
 String SCORE_OUPUT = "mqScoreOutput"; 
 
 @Output(ProducerService.SCORE_OUPUT) 
 SubscribableChannel sendMessage(); 
 } 
 复制代码

6. 定义绑定

package com.honghu.cloud.producer; 
 
 import org.springframework.cloud.stream.annotation.EnableBinding; 
 
 @EnableBinding(ProducerService.class) 
 public class SendServerConfig { 
 
 } 
 复制代码

7. 定义发送消息业务ProducerController

package com.honghu.cloud.controller; 
 
 
 import org.springframework.beans.factory.annotation.Autowired; 
 import org.springframework.integration.support.MessageBuilder; 
 import org.springframework.messaging.Message; 
 import org.springframework.web.bind.annotation.PathVariable; 
 import org.springframework.web.bind.annotation.RequestBody; 
 import org.springframework.web.bind.annotation.RequestMapping; 
 import org.springframework.web.bind.annotation.RequestMethod; 
 import org.springframework.web.bind.annotation.RestController; 
 
 import com.honghu.cloud.common.code.ResponseCode; 
 import com.honghu.cloud.common.code.ResponseVO; 
 import com.honghu.cloud.entity.User; 
 import com.honghu.cloud.producer.ProducerService; 
 
 import net.sf.json.JSONObject; 
 
 @RestController 
 @RequestMapping(value = "producer") 
 public class ProducerController { 
 
 @Autowired 
 private ProducerService producerService; 
 
 
 /** 
 * 通过get方式发送对象 
 * @param name 路径参数 
 * @return 成功|失败 
 */ 
 @RequestMapping(value = "/sendObj", method = RequestMethod.GET) 
 public ResponseVO sendObj() { 
 User user = new User(1, "hello User"); 
 Message<User> msg = MessageBuilder.withPayload(user).build(); 
 boolean result = producerService.sendMessage().send(msg); 
 if(result){ 
 return ResponseCode.buildEnumResponseVO(ResponseCode.RESPONSE_CODE_SUCCESS, false); 
 } 
 return ResponseCode.buildEnumResponseVO(ResponseCode.RESPONSE_CODE_FAILURE, false); 
 } 
 
 
 /** 
 * 通过get方式发送字符串消息 
 * @param name 路径参数 
 * @return 成功|失败 
 */ 
 @RequestMapping(value = "/send/{name}", method = RequestMethod.GET) 
 public ResponseVO send(@PathVariable(value = "name", required = true) String name) { 
 Message msg = MessageBuilder.withPayload(name.getBytes()).build(); 
 boolean result = producerService.sendMessage().send(msg); 
 if(result){ 
 return ResponseCode.buildEnumResponseVO(ResponseCode.RESPONSE_CODE_SUCCESS, false); 
 } 
 return ResponseCode.buildEnumResponseVO(ResponseCode.RESPONSE_CODE_FAILURE, false); 
 } 
 
 /** 
 * 通过post方式发送json对象 
 * @param name 路径参数 
 * @return 成功|失败 
 */ 
 @RequestMapping(value = "/sendJsonObj", method = RequestMethod.POST) 
 public ResponseVO sendJsonObj(@RequestBody JSONObject jsonObj) { 
 Message<JSONObject> msg = MessageBuilder.withPayload(jsonObj).build(); 
 boolean result = producerService.sendMessage().send(msg); 
 if(result){ 
 return ResponseCode.buildEnumResponseVO(ResponseCode.RESPONSE_CODE_SUCCESS, false); 
 } 
 return ResponseCode.buildEnumResponseVO(ResponseCode.RESPONSE_CODE_FAILURE, false); 
 } 
 } 
 
 复制代码

8. 创建commonservice-mq-consumer1消息的消费者项目，在pom里面配置stream-rabbit的依赖

<dependency> 
 <groupId>org.springframework.cloud</groupId> 
 <artifactId>spring-cloud-starter-stream-rabbit</artifactId> 
 </dependency> 
 复制代码

9. 在yml文件中配置：

server: 
 port: 5111 
 spring: 
 application: 
 name: commonservice-mq-consumer1 
 profiles: 
 active: dev 
 cloud: 
 config: 
 discovery: 
 enabled: true 
 service-id: commonservice-config-server 
 
 stream: 
 bindings: 
 mqScoreInput: 
 group: honghu_queue 
 destination: honghu_exchange 
 contentType: application/json 
 
 rabbitmq: 
 host: localhost 
 port: 5672 
 username: honghu 
 password: honghu 
 eureka: 
 client: 
 service-url: 
 defaultZone: http://honghu:123456@localhost:8761/eureka 
 instance: 
 prefer-ip-address: true 
 复制代码

10. 定义接口ConsumerService

package com.honghu.cloud.consumer; 
 
 import org.springframework.cloud.stream.annotation.Input; 
 import org.springframework.messaging.SubscribableChannel; 
 
 public interface ConsumerService { 
 
 String SCORE_INPUT = "mqScoreInput"; 
 
 @Input(ConsumerService.SCORE_INPUT) 
 SubscribableChannel sendMessage(); 
 
 } 
 复制代码

11. 定义启动类和消息消费

package com.honghu.cloud; 
 
 import org.springframework.boot.SpringApplication; 
 import org.springframework.boot.autoconfigure.SpringBootApplication; 
 import org.springframework.cloud.netflix.eureka.EnableEurekaClient; 
 import org.springframework.cloud.stream.annotation.EnableBinding; 
 import org.springframework.cloud.stream.annotation.StreamListener; 
 
 import com.honghu.cloud.consumer.ConsumerService; 
 import com.honghu.cloud.entity.User; 
 
 @EnableEurekaClient 
 @SpringBootApplication 
 @EnableBinding(ConsumerService.class) //可以绑定多个接口 
 public class ConsumerApplication { 
 
 public static void main(String[] args) { 
 SpringApplication.run(ConsumerApplication.class, args); 
 } 
 
 @StreamListener(ConsumerService.SCORE_INPUT) 
 public void onMessage(Object obj) { 
 System.out.println("消费者1，接收到的消息：" + obj); 
 } 
 
 } 
 复制代码

12. 分别启动commonservice-mq-producer、commonservice-mq-consumer1

13. 通过postman来验证消息的发送和接收

可以看到接收到了消息，下一章我们介绍mq的集群方案。

到此，整个消息中心方案集成完毕 **电子商务社交平台源码请加企鹅求求：一零三八七七四六二六**

欢迎大家和我一起学习spring cloud构建微服务云架构，我这边会将近期研发的spring cloud微服务云架构的搭建过程和精髓记录下来，帮助更多有兴趣研发spring cloud框架的朋友，大家来一起探讨spring cloud架构的搭建过程及如何运用于企业项目。  
电子商务社交平台源码请加企鹅求求：一零三八七七四六二六

转载于:https://juejin.im/post/5cd92dc2e51d453af9052152