springboot2.5.6集成RabbitMq实现Topic主题模式的方法是什么

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application.yml

server:  port: 8184spring:  application:    name: rabbitmq-demo  rabbitmq:    host: 127.0.0.1 # ip地址    port: 5672    username: admin # 连接账号    password: 123456 # 连接密码    template:      retry:        enabled: true # 开启失败重试        initial-interval: 10000ms # 第一次重试的间隔时长        max-interval: 300000ms # 最长重试间隔，超过这个间隔将不再重试        multiplier: 2 # 下次重试间隔的倍数，此处是2即下次重试间隔是上次的2倍      exchange: topic.exchange # 缺省的交换机名称，此处配置后，发送消息如果不指定交换机就会使用这个    publisher-confirm-type: correlated # 生产者确认机制，确保消息会正确发送，如果发送失败会有错误回执，从而触发重试    publisher-returns: true    listener:      type: simple      simple:        acknowledge-mode: manual        prefetch: 1 # 限制每次发送一条数据。        concurrency: 3 # 同一个队列启动几个消费者        max-concurrency: 3 # 启动消费者最大数量        # 重试策略相关配置        retry:          enabled: true # 是否支持重试          max-attempts: 5          stateless: false          multiplier: 1.0 # 时间策略乘数因子          initial-interval: 1000ms          max-interval: 10000ms        default-requeue-rejected: true

pom.xml引入依赖

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

常量类创建

public class RabbitMqConstants {    public final static String TEST1_QUEUE = "test1-queue";    public final static String TEST2_QUEUE = "test2-queue";    public final static String EXCHANGE_NAME = "test.topic.exchange";        public final static String TOPIC_TEST1_ROUTINGKEY = "topic.test1.*";    public final static String TOPIC_TEST1_ROUTINGKEY_TEST = "topic.test1.test";        public final static String TOPIC_TEST2_ROUTINGKEY = "topic.test2.*";    public final static String TOPIC_TEST2_ROUTINGKEY_TEST = "topic.test2.test";}

配置Configuration

import com.example.demo.common.RabbitMqConstants;import lombok.extern.slf4j.Slf4j;import org.springframework.amqp.core.*;import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;import org.springframework.amqp.rabbit.core.RabbitTemplate;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.beans.factory.annotation.Qualifier;import org.springframework.beans.factory.config.ConfigurableBeanFactory;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.context.annotation.Scope;@Slf4j@Configurationpublic class RabbitMqConfig {    @Autowired    private CachingConnectionFactory connectionFactory;        @Bean(RabbitMqConstants.EXCHANGE_NAME)    public Exchange exchange(){ //durable(true) 持久化，mq重启之后交换机还在        // Topic模式        //return ExchangeBuilder.topicExchange(RabbitMqConstants.EXCHANGE_NAME).durable(true).build();        //发布订阅模式        return ExchangeBuilder.fanoutExchange(RabbitMqConstants.EXCHANGE_NAME).durable(true).build();    }        @Bean(RabbitMqConstants.TEST1_QUEUE)    public Queue esQueue() {        return new Queue(RabbitMqConstants.TEST1_QUEUE);    }        @Bean(RabbitMqConstants.TEST2_QUEUE)    public Queue gitalkQueue() {        return new Queue(RabbitMqConstants.TEST2_QUEUE);    }        @Bean    public Binding bindingEs(@Qualifier(RabbitMqConstants.TEST1_QUEUE) Queue queue,                             @Qualifier(RabbitMqConstants.EXCHANGE_NAME) Exchange exchange) {        return BindingBuilder.bind(queue).to(exchange).with(RabbitMqConstants.TOPIC_TEST1_ROUTINGKEY).noargs();    }        @Bean    public Binding bindingGitalk(@Qualifier(RabbitMqConstants.TEST2_QUEUE) Queue queue,                                 @Qualifier(RabbitMqConstants.EXCHANGE_NAME) Exchange exchange) {        return BindingBuilder.bind(queue).to(exchange).with(RabbitMqConstants.TOPIC_TEST2_ROUTINGKEY).noargs();    }        @Bean    @Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)    public RabbitTemplate rabbitTemplate() {         RabbitTemplate template = new RabbitTemplate(connectionFactory);        return template;    }}

Rabbit工具类创建

import lombok.extern.slf4j.Slf4j;import org.springframework.amqp.core.Message;import org.springframework.amqp.rabbit.connection.CorrelationData;import org.springframework.amqp.rabbit.core.RabbitTemplate;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Component;import java.util.UUID;@Slf4j@Componentpublic class RabbitMqUtils implements RabbitTemplate.ConfirmCallback, RabbitTemplate.ReturnCallback{    private RabbitTemplate rabbitTemplate;        @Autowired    public RabbitMqUtils(RabbitTemplate rabbitTemplate) {        this.rabbitTemplate = rabbitTemplate;        //这是是设置回调能收到发送到响应        rabbitTemplate.setConfirmCallback(this);        //如果设置备份队列则不起作用        rabbitTemplate.setMandatory(true);        rabbitTemplate.setReturnCallback(this);    }        @Override    public void confirm(CorrelationData correlationData, boolean ack, String cause) {        if(ack){            log.info("消息发送成功：correlationData({}),ack({}),cause({})",correlationData,ack,cause);        }else{            log.info("消息发送失败：correlationData({}),ack({}),cause({})",correlationData,ack,cause);        }    }        @Override    public void returnedMessage(Message message, int replyCode, String replyText, String exchange, String routingKey) {        log.info("消息丢失：exchange({}),route({}),replyCode({}),replyText({}),message:{}",exchange,routingKey,replyCode,replyText,message);    }        public void send(String queueName, Object obj){        CorrelationData correlationId = new CorrelationData(UUID.randomUUID().toString());        this.rabbitTemplate.convertAndSend(queueName, obj, correlationId);    }        public void sendByRoutingKey(String exChange, String routingKey, Object obj){        CorrelationData correlationId = new CorrelationData(UUID.randomUUID().toString());        this.rabbitTemplate.convertAndSend(exChange, routingKey, obj, correlationId);    }}

service创建

public interface TestService {    String sendTest1(String content);    String sendTest2(String content);}

impl实现

import com.example.demo.common.RabbitMqConstants;import com.example.demo.util.RabbitMqUtils;import lombok.extern.slf4j.Slf4j;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;@Service@Slf4jpublic class TestServiceImpl implements TestService {    @Autowired    private RabbitMqUtils rabbitMqUtils;    @Override    public String sendTest1(String content) {        rabbitMqUtils.sendByRoutingKey(RabbitMqConstants.EXCHANGE_NAME,                RabbitMqConstants.TOPIC_TEST1_ROUTINGKEY_TEST, content);        log.info(RabbitMqConstants.TOPIC_TEST1_ROUTINGKEY_TEST+"***************发送成功*****************");        return "发送成功！";    }    @Override    public String sendTest2(String content) {        rabbitMqUtils.sendByRoutingKey(RabbitMqConstants.EXCHANGE_NAME,                RabbitMqConstants.TOPIC_TEST2_ROUTINGKEY_TEST, content);        log.info(RabbitMqConstants.TOPIC_TEST2_ROUTINGKEY_TEST+"***************发送成功*****************");        return "发送成功！";    }}

监听类

import com.example.demo.common.RabbitMqConstants;import lombok.extern.slf4j.Slf4j;import org.springframework.amqp.core.ExchangeTypes;import org.springframework.amqp.core.Message;import org.springframework.amqp.rabbit.annotation.Exchange;import org.springframework.amqp.rabbit.annotation.Queue;import org.springframework.amqp.rabbit.annotation.QueueBinding;import org.springframework.amqp.rabbit.annotation.RabbitListener;import org.springframework.stereotype.Component;import com.rabbitmq.client.Channel;@Slf4j@Componentpublic class RabbitMqListener {    @RabbitListener(queues = RabbitMqConstants.TEST1_QUEUE)    public void test1Consumer(Message message, Channel channel) {        try {            //手动确认消息已经被消费            channel.basicAck(message.getMessageProperties().getDeliveryTag(), false);            log.info("Counsoum1消费消息：" + message.toString() + "。成功！");        } catch (Exception e) {            e.printStackTrace();            log.info("Counsoum1消费消息：" + message.toString() + "。失败！");        }    }    @RabbitListener(queues = RabbitMqConstants.TEST2_QUEUE)    public void test2Consumer(Message message, Channel channel) {        try {            //手动确认消息已经被消费            channel.basicAck(message.getMessageProperties().getDeliveryTag(), false);            log.info("Counsoum2消费消息：" + message.toString() + "。成功！");        } catch (Exception e) {            e.printStackTrace();            log.info("Counsoum2消费消息：" + message.toString() + "。失败！");        }    }}

Controller测试

import com.example.demo.server.TestService;import jdk.nashorn.internal.objects.annotations.Getter;import lombok.extern.slf4j.Slf4j;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.*;import java.util.Map;@Slf4j@RestController@RequestMapping("/enterprise")public class TestController {    @Autowired    private TestService testService;    @GetMapping("/finance")    public String hello3(@RequestParam(required = false) Map<String, Object> params) {        return testService.sendTest2(params.get("entId").toString());    }        @PostMapping(value = "/finance2")    public String sendTest2(@RequestBody String content) {        return testService.sendTest2(content);    }}

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