本篇内容主要讲解“springboot2.5.6集成RabbitMq实现Topic主题模式的方法是什么”，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习“springboot2.5.6集成RabbitMq实现Topic主题模式的方法是什么”吧!
1.application.yml
server: port: 8184 spring: 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
2.pom.xml引入依赖
<!-- rabbitmq --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-amqp</artifactId> </dependency>
3.常量类创建
/**
* @author kkp
* @ClassName RabbitMqConstants
* @date 2021/11/3 14:16
* @Description
*/
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";
/**
* routingKey1
*/
public final static String TOPIC_TEST1_ROUTINGKEY = "topic.test1.*";
public final static String TOPIC_TEST1_ROUTINGKEY_TEST = "topic.test1.test";
/**
* routingKey1
*/
public final static String TOPIC_TEST2_ROUTINGKEY = "topic.test2.*";
public final static String TOPIC_TEST2_ROUTINGKEY_TEST = "topic.test2.test";
}
4.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;
/**
* @author kkp
* @ClassName RabbitMqConfig
* @date 2021/11/3 14:16
* @Description
*/
@Slf4j
@Configuration
public class RabbitMqConfig {
@Autowired
private CachingConnectionFactory connectionFactory;
/**
* 声明交换机
*/
@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();
}
/**
* 声明队列
* new Queue(QUEUE_EMAIL,true,false,false)
* durable="true" 持久化 rabbitmq重启的时候不需要创建新的队列
* auto-delete 表示消息队列没有在使用时将被自动删除 默认是false
* exclusive 表示该消息队列是否只在当前connection生效,默认是false
*/
@Bean(RabbitMqConstants.TEST1_QUEUE)
public Queue esQueue() {
return new Queue(RabbitMqConstants.TEST1_QUEUE);
}
/**
* 声明队列
*/
@Bean(RabbitMqConstants.TEST2_QUEUE)
public Queue gitalkQueue() {
return new Queue(RabbitMqConstants.TEST2_QUEUE);
}
/**
* TEST1_QUEUE队列绑定交换机，指定routingKey
*/
@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();
}
/**
* TEST2_QUEUE队列绑定交换机，指定routingKey
*/
@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();
}
/**
* 如果需要在生产者需要消息发送后的回调，
* 需要对rabbitTemplate设置ConfirmCallback对象，
* 由于不同的生产者需要对应不同的ConfirmCallback，
* 如果rabbitTemplate设置为单例bean，
* 则所有的rabbitTemplate实际的ConfirmCallback为最后一次申明的ConfirmCallback。
* @return
*/
@Bean
@Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)
public RabbitTemplate rabbitTemplate() {
RabbitTemplate template = new RabbitTemplate(connectionFactory);
return template;
}
}
5.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;
/**
* @author kkp
* @ClassName RabbitMqUtils
* @date 2021/11/3 14:21
* @Description
*/
@Slf4j
@Component
public class RabbitMqUtils implements RabbitTemplate.ConfirmCallback, RabbitTemplate.ReturnCallback{
private RabbitTemplate rabbitTemplate;
/**
* 构造方法注入
*/
@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);
}
/**
* 回调确认
*/
@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);
}
}
/**
* 消息发送到转换器的时候没有对列,配置了备份对列该回调则不生效
* @param message
* @param replyCode
* @param replyText
* @param exchange
* @param routingKey
*/
@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);
}
/**
* 发送到指定Queue
* @param queueName
* @param obj
*/
public void send(String queueName, Object obj){
CorrelationData correlationId = new CorrelationData(UUID.randomUUID().toString());
this.rabbitTemplate.convertAndSend(queueName, obj, correlationId);
}
/**
* 1、交换机名称
* 2、routingKey
* 3、消息内容
*/
public void sendByRoutingKey(String exChange, String routingKey, Object obj){
CorrelationData correlationId = new CorrelationData(UUID.randomUUID().toString());
this.rabbitTemplate.convertAndSend(exChange, routingKey, obj, correlationId);
}
}
6.service创建
public interface TestService {
String sendTest1(String content);
String sendTest2(String content);
}
7.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;
/**
* @author kkp
* @ClassName TestServiceImpl
* @date 2021/11/3 14:24
* @Description
*/
@Service
@Slf4j
public 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！";
}
}
8.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;
/**
* @author kkp
* @ClassName RabbitMqListener
* @date 2021/11/3 14:22
* @Description
*/
@Slf4j
@Component
public 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！");
}
}
}
9.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;
/**
* @author kkp
* @ClassName TestController
* @date 2021/11/3 14:25
* @Description
*/
@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());
}
/**
* 发送消息test2
* @param content
* @return
*/
@PostMapping(value = "/finance2")
public String sendTest2(@RequestBody String content) {
return testService.sendTest2(content);
}
}
到此，相信大家对“springboot2.5.6集成RabbitMq实现Topic主题模式的方法是什么”有了更深的了解，不妨来实际操作一番吧！这里是亿速云网站，更多相关内容可以进入相关频道进行查询，关注我们，继续学习！
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