手写超级好用的rabbitmq-spring-boot-start启动器

  • Java大飞哥

    2024-03-13 13:08:42
  • 数据库开发技术
  • 原创

1.前言

由于springBoot官方提供的默认的rabbitMq自动装配不是那么好用，一个项目中只能配置使用一个rabbitMq的服务器，队列也需要编码的方式定义，这种繁杂且不易使用，用一次需要写一次硬编码，之前有一个想法是，能不能使用springBoot官方提供的自动装配实现一个多rabbitMq多队列配置并且支持多种延迟队列的这种多对多关系的实现，但是左思右想，springBoot官方提供的这个rabbitMq自动装配不能满足我的需求，所以我在酝酿了很久，也把官方那个自动装配的源码看了一遍又一遍，随着我之前手写实现了好几个starter启动器，然后就想实现一个rabbitMq的starter,只要简单的配置即可轻松的实现上面的功能，然后提供了一套好用的api,使用的时候只需要在项目中引入这个启动器，节省很大的硬编码和配置灵活，配置改变只需要重启项目即可，对业务使用友好的一个starter启动器，再也不用为如何使用rabbitMq的集成而烦恼了，只需要简单的配置就可以实现好用的功能，让我们把精力放在业务上，而不是代码和代码集成上，大大的提升开发效率和节省我们宝贵的时间，让我们用宝贵的时间来享受时光，生命和生活，效率至上，远离加班，简约也简单，优雅也优美，简单配置就可以实现交换机、队列、绑定关系等根据配置自动装配，然后实现发送普通消息和3种延迟队列发送延迟消息，3中延迟队列实现如下：
一：延迟插件实现延迟队列
交换机类型必须CustomExchange
二：TTL + 死信队列/延迟交换机实现延迟队列
三：延迟交换机 + 消息设置setHeader("x-delay", xxx)
还可以配置相同的rabbitMq服务器不同的虚拟机，单独配置，遵循下标递增不重复即可
实现思路如下。

2.工程目录结构


3.主要实现原理

3.1spring.factories配置

org.springframework.boot.autoconfigure.EnableAutoConfiguration=\  com.zlf.config.RabbitConfig,\  com.zlf.config.ExchangeQueueConfig,\  com.zlf.starter.RabbitAutoConfiguration

3.2EnableZlfRabbitMq配置

package com.zlf.starter;
import org.springframework.context.annotation.Import;
import java.lang.annotation.Documented;import java.lang.annotation.ElementType;import java.lang.annotation.Inherited;import java.lang.annotation.Retention;import java.lang.annotation.RetentionPolicy;import java.lang.annotation.Target;
/** * 使用需要在启动类上加入@EnableZlfRabbit注解 * 启动类上排除默认的自动装配RabbitAutoConfiguration * * @author zlf * 启动类上加入如下配置 * @SpringBootApplication(exclude = { * RabbitAutoConfiguration.class}) * @Import(value = {RabbitService.class, ZlfMqSpringUtils.class}) */@Target(ElementType.TYPE)@Retention(RetentionPolicy.RUNTIME)@Documented@Inherited@Import(ZlfRabbitMqRegistrar.class)public @interface EnableZlfRabbitMq {
}

3.3RabbitAutoConfiguration配置

package com.zlf.starter;
import org.springframework.amqp.rabbit.annotation.EnableRabbit;import org.springframework.amqp.rabbit.config.RabbitListenerConfigUtils;import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;import org.springframework.context.annotation.Configuration;
@Configuration(proxyBeanMethods = false)@EnableRabbit@ConditionalOnMissingBean(name = RabbitListenerConfigUtils.RABBIT_LISTENER_ANNOTATION_PROCESSOR_BEAN_NAME)public class RabbitAutoConfiguration {
}


3.4ZlfRabbitMqRegistrar配置

package com.zlf.starter;
import cn.hutool.core.collection.CollectionUtil;import com.alibaba.fastjson.JSON;import com.rabbitmq.client.Channel;import com.zlf.config.ExchangeQueueConfig;import com.zlf.config.ExchangeQueueProperties;import com.zlf.config.RabbitConfig;import com.zlf.config.RabbitProperties;import com.zlf.config.RabbitProperties.AmqpContainer;import com.zlf.config.RabbitProperties.Cache;import com.zlf.config.RabbitProperties.Cache.Connection;import com.zlf.config.RabbitProperties.ContainerType;import com.zlf.config.RabbitProperties.DirectContainer;import com.zlf.config.RabbitProperties.ListenerRetry;import com.zlf.config.RabbitProperties.Retry;import com.zlf.config.RabbitProperties.SimpleContainer;import com.zlf.config.RabbitProperties.Template;import com.zlf.constants.ErrorExchangeQueueInfo;import com.zlf.dto.ExchangeQueueDto;import com.zlf.enums.DelayTypeEnum;import com.zlf.enums.ExchangeTypeEnum;import com.zlf.enums.FunctionTypeEnum;import com.zlf.service.RabbitService;import lombok.SneakyThrows;import lombok.extern.slf4j.Slf4j;import org.apache.commons.lang3.StringUtils;import org.springframework.amqp.core.AbstractExchange;import org.springframework.amqp.core.Binding;import org.springframework.amqp.core.Queue;import org.springframework.amqp.rabbit.config.DirectRabbitListenerContainerFactory;import org.springframework.amqp.rabbit.config.RetryInterceptorBuilder;import org.springframework.amqp.rabbit.config.SimpleRabbitListenerContainerFactory;import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;import org.springframework.amqp.rabbit.connection.CachingConnectionFactory.ConfirmType;import org.springframework.amqp.rabbit.connection.RabbitConnectionFactoryBean;import org.springframework.amqp.rabbit.core.RabbitAdmin;import org.springframework.amqp.rabbit.core.RabbitTemplate;import org.springframework.amqp.rabbit.retry.MessageRecoverer;import org.springframework.amqp.rabbit.retry.RepublishMessageRecoverer;import org.springframework.amqp.rabbit.support.ValueExpression;import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;import org.springframework.beans.BeansException;import org.springframework.beans.MutablePropertyValues;import org.springframework.beans.factory.BeanFactory;import org.springframework.beans.factory.BeanFactoryAware;import org.springframework.beans.factory.config.ConfigurableBeanFactory;import org.springframework.beans.factory.config.ConstructorArgumentValues;import org.springframework.beans.factory.support.BeanDefinitionRegistry;import org.springframework.beans.factory.support.RootBeanDefinition;import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;import org.springframework.boot.context.properties.ConfigurationProperties;import org.springframework.boot.context.properties.EnableConfigurationProperties;import org.springframework.boot.context.properties.PropertyMapper;import org.springframework.boot.context.properties.bind.Binder;import org.springframework.context.EnvironmentAware;import org.springframework.context.annotation.Configuration;import org.springframework.context.annotation.ImportBeanDefinitionRegistrar;import org.springframework.core.annotation.AnnotationUtils;import org.springframework.core.env.Environment;import org.springframework.core.type.AnnotationMetadata;import org.springframework.retry.backoff.ExponentialBackOffPolicy;import org.springframework.retry.policy.SimpleRetryPolicy;import org.springframework.retry.support.RetryTemplate;import org.springframework.util.CollectionUtils;
import java.time.Duration;import java.util.HashMap;import java.util.List;import java.util.Map;import java.util.Objects;
/** * spring: * rabbitmq: * listener: * simple: * acknowledge-mode: auto #由spring监测listener代码是否出现异常，没有异常则返回ack；抛出异常则返回nack * manual：手动ack，需要在业务代码结束后，调用api发送ack。 * auto：自动ack，由spring监测listener代码是否出现异常，没有异常则返回ack；抛出异常则返回nack * none：关闭ack，MQ假定消费者获取消息后会成功处理，因此消息投递后立即被删除(此时，消息投递是不可靠的，可能丢失) * 
 * 原文链接：https://blog.csdn.net/m0_53142956/article/details/127792054 * * @author zlf */@Slf4j@Configuration(proxyBeanMethods = false)@ConditionalOnClass({RabbitTemplate.class, Channel.class})@EnableConfigurationProperties(RabbitConfig.class)public class ZlfRabbitMqRegistrar implements ImportBeanDefinitionRegistrar, EnvironmentAware, BeanFactoryAware {
    private BeanFactory beanFactory;    private RabbitConfig rabbitConfig;    private ExchangeQueueConfig exchangeQueueConfig;
    @SneakyThrows    @Override    public void registerBeanDefinitions(AnnotationMetadata annotationMetadata, BeanDefinitionRegistry beanDefinitionRegistry) {        List rps = rabbitConfig.getRps();        if (CollectionUtils.isEmpty(rps)) {            throw new RuntimeException("rabbitMq的rps配置不为空,请检查配置!");        }        log.info("zlf.registerBeanDefinitions:rps.size:{},rps:{}", rps.size(), JSON.toJSONString(rps));        List eqps = exchangeQueueConfig.getEqps();        if (CollectionUtils.isEmpty(eqps)) {            throw new RuntimeException("rabbitMq的eqps配置不为空,请检查配置!");        }        log.info("zlf.registerBeanDefinitions:eqps.size:{},rps:{}", eqps.size(), JSON.toJSONString(eqps));        for (int i = 0; i < rps.size(); i++) {            this.checkRabbitProperties(rps.get(i));            CachingConnectionFactory cachingConnectionFactory = new CachingConnectionFactory(getRabbitConnectionFactoryBean(rps.get(i)).getObject());            cachingConnectionFactory.setAddresses(rps.get(i).determineAddresses());            cachingConnectionFactory.setPublisherReturns(rps.get(i).getPublisherReturns());            cachingConnectionFactory.setPublisherConfirmType(rps.get(i).getPublisherConfirmType());            Cache.Channel channel = rps.get(i).getCache().getChannel();            if (Objects.nonNull(channel.getSize())) {                cachingConnectionFactory.setChannelCacheSize(channel.getSize());            }            if (Objects.nonNull(channel.getCheckoutTimeout())) {                Duration checkoutTimeout = channel.getCheckoutTimeout();                cachingConnectionFactory.setChannelCheckoutTimeout(checkoutTimeout.toMillis());            }            Connection connection = rps.get(i).getCache().getConnection();            if (Objects.nonNull(connection.getMode())) {                cachingConnectionFactory.setCacheMode(connection.getMode());            }            if (Objects.nonNull(connection.getSize())) {                cachingConnectionFactory.setConnectionCacheSize(connection.getSize());            }            // 注册cachingConnectionFactory的bean            ((ConfigurableBeanFactory) this.beanFactory).registerSingleton(CachingConnectionFactory.class.getName() + i, cachingConnectionFactory);            log.info("zlf.ConfigurableBeanFactory注册完成,beanName:{}", CachingConnectionFactory.class.getName() + i);            // 注册RabbitAdmin的bean            RabbitAdmin rabbitAdmin = new RabbitAdmin(cachingConnectionFactory);            ((ConfigurableBeanFactory) this.beanFactory).registerSingleton(RabbitAdmin.class.getName() + i, rabbitAdmin);            log.info("zlf.RabbitAdmin注册完成,beanName:{}", RabbitAdmin.class.getName() + i);            //构建发送的RabbitTemplate实例关联连接工厂            Jackson2JsonMessageConverter jackson2JsonMessageConverter = new Jackson2JsonMessageConverter();            RabbitTemplate rabbitTemplate = new RabbitTemplate(cachingConnectionFactory);            rabbitTemplate.setMessageConverter(jackson2JsonMessageConverter);            Template template = rps.get(i).getTemplate();            ConfirmType publisherConfirmType = rps.get(i).getPublisherConfirmType();            log.info("第{}个配置的publisherConfirmType:{}", i, JSON.toJSONString(publisherConfirmType));            //生产者confirm            /**             * publish-confirm-type：开启publisher-confirm，这里支持两种类型：             * simple：【同步】等待confirm结果，直到超时（可能引起代码阻塞）             * correlated：【异步】回调，定义ConfirmCallback，MQ返回结果时会回调这个ConfirmCallback             * publish-returns：开启publish-return功能，同样是基于callback机制，不过是定义ReturnCallback             * template.mandatory：             * 定义当消息从交换机路由到队列失败时的策略。             * 【true，则调用ReturnCallback；false：则直接丢弃消息】             */            if (ConfirmType.CORRELATED.equals(publisherConfirmType)) {                rabbitTemplate.setConfirmCallback((correlationData, ack, cause) -> {                    if (Objects.nonNull(correlationData)) {                        if (Objects.nonNull(ack) && ack) {                            log.info("消息发送成功->correlationData:{}", JSON.toJSONString(correlationData));                        } else if (StringUtils.isNotBlank(cause)) {                            log.error("消息->correlationData:{}->发送失败原因->{}", JSON.toJSONString(correlationData), cause);                        }                    }                    if (Objects.nonNull(ack) && ack) {                        log.info("消息发送成功ack:{}", ack);                    }                    if (StringUtils.isNotBlank(cause)) {                        log.error("消息发送失败原因->cause:{}", cause);                    }                    if (Objects.isNull(correlationData) && Objects.isNull(ack) && StringUtils.isEmpty(cause)) {                        log.info("消息发送成功,收到correlationData,ack,cause都是null");                    }                });            }            Boolean publisherReturns = rps.get(i).getPublisherReturns();            Boolean mandatory = template.getMandatory();            log.info("第{}个配置的publisherReturns:{},mandatory:{}", i, publisherReturns, mandatory);            //消息回调            //开启强制回调            if (mandatory && publisherReturns) {                rabbitTemplate.setMandatory(template.getMandatory());                rabbitTemplate.setMandatoryExpression(new ValueExpression<>(template.getMandatory()));                //设置消息回调                rabbitTemplate.setReturnCallback((message, replyCode, replyText, exchange, routingKey) -> {                    log.error("消息->{}路由失败", message);                    // 如果有需要的话，重发消息                });            }            Retry retry = rps.get(i).getTemplate().getRetry();            if (retry.isEnabled()) {                RetryTemplate retryTemplate = new RetryTemplate();                SimpleRetryPolicy policy = new SimpleRetryPolicy();                retryTemplate.setRetryPolicy(policy);                policy.setMaxAttempts(retry.getMaxAttempts());                ExponentialBackOffPolicy backOffPolicy = new ExponentialBackOffPolicy();                backOffPolicy.setMultiplier(retry.getMultiplier());                if (Objects.nonNull(retry.getMaxInterval())) {                    backOffPolicy.setMaxInterval(retry.getMaxInterval().toMillis());                }                rabbitTemplate.setRetryTemplate(retryTemplate);            }            Duration receiveTimeout = template.getReceiveTimeout();            if (Objects.nonNull(receiveTimeout)) {                rabbitTemplate.setReceiveTimeout(receiveTimeout.toMillis());            }            Duration replyTimeout = template.getReplyTimeout();            if (Objects.nonNull(replyTimeout)) {                rabbitTemplate.setReplyTimeout(replyTimeout.toMillis());            }            String exchange = template.getExchange();            if (StringUtils.isNotBlank(exchange)) {                rabbitTemplate.setExchange(exchange);            }            String routingKey = template.getRoutingKey();            if (StringUtils.isNotBlank(routingKey)) {                rabbitTemplate.setRoutingKey(routingKey);            }            String defaultReceiveQueue = template.getDefaultReceiveQueue();            if (StringUtils.isNotBlank(defaultReceiveQueue)) {                rabbitTemplate.setDefaultReceiveQueue(defaultReceiveQueue);            }            ((ConfigurableBeanFactory) this.beanFactory).registerSingleton(RabbitTemplate.class.getName() + i, rabbitTemplate);            log.info("zlf.RabbitTemplate注册完成,beanName:{}", RabbitTemplate.class.getName() + i);            // 不注册RabbitService            RabbitService rabbitService = new RabbitService();            //构建监听工厂实例并注入            ContainerType type = rps.get(i).getListener().getType();            if (ContainerType.SIMPLE.equals(type)) {                Map errorExchangeQueueRelationship = this.createErrorExchangeQueueRelationship(String.valueOf(i), rabbitService, rabbitAdmin);                SimpleContainer simple = rps.get(i).getListener().getSimple();                ConstructorArgumentValues cas3 = new ConstructorArgumentValues();                MutablePropertyValues values3 = new MutablePropertyValues();                this.getAmqpContainer(simple, values3, cachingConnectionFactory, jackson2JsonMessageConverter, rabbitTemplate, errorExchangeQueueRelationship);                if (Objects.nonNull(simple.getConcurrency())) {                    values3.add("concurrentConsumers", simple.getConcurrency());                }                if (Objects.nonNull(simple.getMaxConcurrency())) {                    values3.add("maxConcurrentConsumers", simple.getMaxConcurrency());                }                if (Objects.nonNull(simple.getBatchSize())) {                    values3.add("batchSize", simple.getBatchSize());                }                RootBeanDefinition rootBeanDefinition3 = new RootBeanDefinition(SimpleRabbitListenerContainerFactory.class, cas3, values3);                beanDefinitionRegistry.registerBeanDefinition(SimpleRabbitListenerContainerFactory.class.getName() + i, rootBeanDefinition3);                log.info("zlf.SimpleRabbitListenerContainerFactory注册完成,beanName:{}", SimpleRabbitListenerContainerFactory.class.getName() + i);            } else if (ContainerType.DIRECT.equals(type)) {                Map errorExchangeQueueRelationship = this.createErrorExchangeQueueRelationship(String.valueOf(i), rabbitService, rabbitAdmin);                DirectContainer direct = rps.get(i).getListener().getDirect();                ConstructorArgumentValues cas4 = new ConstructorArgumentValues();                MutablePropertyValues values4 = new MutablePropertyValues();                this.getAmqpContainer(direct, values4, cachingConnectionFactory, jackson2JsonMessageConverter, rabbitTemplate, errorExchangeQueueRelationship);                if (Objects.nonNull(direct.getConsumersPerQueue())) {                    values4.add("consumersPerQueue", direct.getConsumersPerQueue());                }                RootBeanDefinition rootBeanDefinition4 = new RootBeanDefinition(DirectRabbitListenerContainerFactory.class, cas4, values4);                beanDefinitionRegistry.registerBeanDefinition(DirectRabbitListenerContainerFactory.class.getName() + i, rootBeanDefinition4);                log.info("zlf.DirectRabbitListenerContainerFactory注册完成,beanName:{}", DirectRabbitListenerContainerFactory.class.getName() + i);            }            //解析注册交换机、队列和绑定关系            ExchangeQueueProperties exchangeQueueProperties = eqps.get(i);            log.info("zlf.exchangeQueueProperties:{}", JSON.toJSONString(exchangeQueueProperties));            Integer index = exchangeQueueProperties.getIndex();            log.info("zlf.exchangeQueueProperties.index:{}", index);            if (Objects.isNull(index)) {                throw new RuntimeException("exchangeQueueProperties.index不为空");            }            if (Objects.nonNull(exchangeQueueProperties)) {                log.info("zlf.exchangeQueueProperties:{}", JSON.toJSONString(exchangeQueueProperties));                List eqs = exchangeQueueProperties.getEqs();                if (CollectionUtil.isNotEmpty(eqs)) {                    for (int k = 0; k < eqs.size(); k++) {                        String bindingIndex = index.toString() + k;                        log.info("zlf.bindingIndex:{}", bindingIndex);                        ExchangeQueueDto exchangeQueueDto = eqs.get(k);                        log.info("zlf.exchangeQueueDto:{}", JSON.toJSONString(exchangeQueueDto));                        String functionType = exchangeQueueDto.getFunctionType();                        log.info("zlf.functionType:{}", functionType);                        if (FunctionTypeEnum.NORMAL.getFunctionType().equals(functionType)) {                            this.createRelationship(FunctionTypeEnum.NORMAL, exchangeQueueDto, rabbitService, rabbitAdmin, bindingIndex, false);                        } else if (FunctionTypeEnum.DELAY.getFunctionType().equals(functionType)) {                            Integer delayType = exchangeQueueDto.getDelayType();                            log.info("zlf.delayType:{}", delayType);                            if (DelayTypeEnum.ONE.getDelayType().equals(delayType)) {                                //延迟插件实现延迟队列                                String exchangeType = exchangeQueueDto.getExchangeType();                                if (!ExchangeTypeEnum.CUSTOM.getExchangeType().equals(exchangeType)) {                                    throw new RuntimeException("延迟插件实现延迟队列交换机类型exchangeType必须定义为:custom");                                }                                this.createRelationship(FunctionTypeEnum.DELAY, exchangeQueueDto, rabbitService, rabbitAdmin, bindingIndex, false);                            } else if (DelayTypeEnum.TWO.getDelayType().equals(delayType)) {                                //TTL + 死信队列实现延迟队列                                this.createRelationship(FunctionTypeEnum.DELAY, exchangeQueueDto, rabbitService, rabbitAdmin, bindingIndex, false);                            } else if (DelayTypeEnum.THREE.getDelayType().equals(delayType)) {                                //延迟交换机 + 消息设置setHeader("x-delay", xxx)                                this.createRelationship(FunctionTypeEnum.DELAY, exchangeQueueDto, rabbitService, rabbitAdmin, bindingIndex, true);                            }                        }                    }                }            }        }    }
    /**     * 检查rabbitProperties配置的主要参数     *     * @param rabbitProperties     */    private void checkRabbitProperties(RabbitProperties rabbitProperties) {        String virtualHost = rabbitProperties.getVirtualHost();        if (StringUtils.isEmpty(virtualHost)) {            throw new RuntimeException("RabbitProperties.virtualHost不为空");        }        String addresses = rabbitProperties.getAddresses();        if (StringUtils.isEmpty(addresses)) {            throw new RuntimeException("RabbitProperties.addresses不为空");        }        Integer port = rabbitProperties.getPort();        if (Objects.isNull(port)) {            throw new RuntimeException("RabbitProperties.port不为空");        }        String username = rabbitProperties.getUsername();        if (StringUtils.isEmpty(username)) {            throw new RuntimeException("RabbitProperties.username不为空");        }        String password = rabbitProperties.getPassword();        if (StringUtils.isEmpty(password)) {            throw new RuntimeException("RabbitProperties.password不为空");        }    }
    /**     * 创建关系     *     * @param functionTypeEnum     * @param exchangeQueueDto     * @param rabbitService     * @param rabbitAdmin     * @param bindingIndex     */    private void createRelationship(FunctionTypeEnum functionTypeEnum, ExchangeQueueDto exchangeQueueDto, RabbitService rabbitService, RabbitAdmin rabbitAdmin, String bindingIndex, Boolean isDelayed) {        String exchangeName = exchangeQueueDto.getExchangeName();        String exchangeType = exchangeQueueDto.getExchangeType();        HashMap exchangeArgs = exchangeQueueDto.getExchangeArgs();        log.info("zlf" + functionTypeEnum.getFunctionType() + ".exchangeName:{},exchangeType:{},exchangeArgs:{}", exchangeName, exchangeType, JSON.toJSONString(exchangeArgs));        AbstractExchange exchange1 = rabbitService.createExchange(rabbitAdmin, exchangeName, exchangeType, exchangeArgs, isDelayed);        exchangeName = exchangeName + bindingIndex;        ((ConfigurableBeanFactory) this.beanFactory).registerSingleton(exchangeName, exchange1);        log.info("zlf." + functionTypeEnum.getFunctionType() + ".Exchange注册完成,beanName:{}", exchangeName);        String queueName = exchangeQueueDto.getQueueName();        HashMap queueArgs = exchangeQueueDto.getQueueArgs();        String routingKey1 = exchangeQueueDto.getRoutingKey();        log.info("zlf." + functionTypeEnum.getFunctionType() + ".queueName:{},queueArgs:{},routingKey1:{}", queueName, JSON.toJSONString(queueArgs), routingKey1);        Queue queue = rabbitService.createQueue(rabbitAdmin, queueName, queueArgs);        queueName = queueName + bindingIndex;        ((ConfigurableBeanFactory) this.beanFactory).registerSingleton(queueName, queue);        log.info("zlf." + functionTypeEnum.getFunctionType() + ".Queue注册完成,beanName:{}", queueName);        Binding binding = rabbitService.binding(rabbitAdmin, exchange1, queue, routingKey1);        ((ConfigurableBeanFactory) this.beanFactory).registerSingleton(Binding.class.getName() + bindingIndex, binding);        log.info("zlf." + functionTypeEnum.getFunctionType() + ".Binding注册完成bindingIndex:{},beanName:{}", bindingIndex, Binding.class.getName() + bindingIndex);        Integer delayType = exchangeQueueDto.getDelayType();        if (DelayTypeEnum.TWO.getDelayType().equals(delayType)) {            String dlxExchangeName = exchangeQueueDto.getDlxExchangeName();            if (StringUtils.isEmpty(dlxExchangeName)) {                throw new RuntimeException("TTL + 死信队列实现延迟队列配置参数dlxExchangeName不为空!");            }            String dlxExchangeType = exchangeQueueDto.getDlxExchangeType();            if (StringUtils.isEmpty(dlxExchangeType)) {                throw new RuntimeException("TTL + 死信队列实现延迟队列配置参数dlxExchangeType不为空!");            }            AbstractExchange exchange2 = rabbitService.createExchange(rabbitAdmin, dlxExchangeName, dlxExchangeType, exchangeArgs, false);            dlxExchangeName = dlxExchangeName + bindingIndex;            ((ConfigurableBeanFactory) this.beanFactory).registerSingleton(dlxExchangeName, exchange2);            log.info("zlf.TTL + 死信队列实现延迟队列,死信交换机注册完成,beanName:{}", dlxExchangeName);            String dlxQueueName = exchangeQueueDto.getDlxQueueName();            Queue queue2 = rabbitService.createQueue(rabbitAdmin, dlxQueueName, null);            dlxQueueName = dlxQueueName + bindingIndex;            ((ConfigurableBeanFactory) this.beanFactory).registerSingleton(dlxQueueName, queue2);            log.info("zlf.TTL + 死信队列实现延迟队列,死信队列注册完成,beanName:{}", dlxQueueName);            String dlxKey = exchangeQueueDto.getDlxKey();            Binding binding2 = rabbitService.binding(rabbitAdmin, exchange2, queue2, dlxKey);            String dlxBeanName = "dlx" + Binding.class.getName() + bindingIndex + 1;            ((ConfigurableBeanFactory) this.beanFactory).registerSingleton(dlxBeanName, binding2);            log.info("zlf.TTL + 死信队列实现延迟队列,死信交换机绑定队列的绑定关系注册完成,beanName:{}", dlxBeanName);        }    }
    private Map createErrorExchangeQueueRelationship(String index, RabbitService rabbitService, RabbitAdmin rabbitAdmin) {        Map resultMap = new HashMap<>();        String exchangeName = ErrorExchangeQueueInfo.ERROR_EXCHANGE_PREFIX + index;        AbstractExchange exchange = rabbitService.createExchange(rabbitAdmin, exchangeName, ErrorExchangeQueueInfo.ERROR_EXCHANGE_TYPE, null, false);        ((ConfigurableBeanFactory) this.beanFactory).registerSingleton(exchangeName, exchange);        log.info("zlf.ErrorExchange注册完成,beanName:{}", exchangeName);        String queueName = ErrorExchangeQueueInfo.ERROR_QUEUE_PREFIX + index;        Queue queue = rabbitService.createQueue(rabbitAdmin, queueName, null);        ((ConfigurableBeanFactory) this.beanFactory).registerSingleton(queueName, queue);        log.info("zlf.ErrorQueue注册完成,beanName:{}", queueName);        String errorRoutingKey = ErrorExchangeQueueInfo.ERROR_KEY_PREFIX + index;        log.info("zlf.errorRoutingKey:{}", errorRoutingKey);        Binding errorBinding = rabbitService.binding(rabbitAdmin, exchange, queue, errorRoutingKey);        String errorBingBeanName = ErrorExchangeQueueInfo.ERROR_BINDING_BANE_NAME_PREFIX + Binding.class.getSimpleName() + index;        ((ConfigurableBeanFactory) this.beanFactory).registerSingleton(errorBingBeanName, errorBinding);        log.info("zlf.ErrorBing注册完成,beanName:{}", errorBingBeanName);        resultMap.put("errorExchange", exchangeName);        resultMap.put("errorRoutingKey", errorRoutingKey);        return resultMap;    }
    private void getAmqpContainer(AmqpContainer amqpContainer, MutablePropertyValues values, CachingConnectionFactory cachingConnectionFactory, Jackson2JsonMessageConverter jackson2JsonMessageConverter, RabbitTemplate rabbitTemplate, Map errorExchangeQueueRelationship) {        values.add("connectionFactory", cachingConnectionFactory);        values.add("autoStartup", amqpContainer.isAutoStartup());        values.add("messageConverter", jackson2JsonMessageConverter);        if (Objects.nonNull(amqpContainer.getAcknowledgeMode())) {            values.add("acknowledgeMode", amqpContainer.getAcknowledgeMode());        }        if (Objects.nonNull(amqpContainer.getPrefetch())) {            values.add("prefetch", amqpContainer.getPrefetch());        }        if (Objects.nonNull(amqpContainer.getDefaultRequeueRejected())) {            values.add("defaultRequeueRejected", amqpContainer.getDefaultRequeueRejected());        }        if (Objects.nonNull(amqpContainer.getIdleEventInterval())) {            values.add("idleEventInterval", amqpContainer.getIdleEventInterval());        }        values.add("missingQueuesFatal", amqpContainer.isMissingQueuesFatal());        ListenerRetry retry2 = amqpContainer.getRetry();        if (retry2.isEnabled()) {            RetryInterceptorBuilder builder = (retry2.isStateless()) ? RetryInterceptorBuilder.stateless()                    : RetryInterceptorBuilder.stateful();            RetryTemplate retryTemplate = new RetryTemplate();            SimpleRetryPolicy policy = new SimpleRetryPolicy();            retryTemplate.setRetryPolicy(policy);            policy.setMaxAttempts(retry2.getMaxAttempts());            ExponentialBackOffPolicy backOffPolicy = new ExponentialBackOffPolicy();            backOffPolicy.setMultiplier(retry2.getMultiplier());            if (Objects.nonNull(retry2.getMaxInterval())) {                backOffPolicy.setMaxInterval(retry2.getMaxInterval().toMillis());            }            builder.retryOperations(retryTemplate);            /**             * 在开启重试模式后，重试次数耗尽，如果消息依然失败，则需要有MessageRecovery接口来处理，它包含三种不同的实现：             *             * RejectAndDontRequeueRecoverer：重试耗尽后，直接reject，【丢弃消息】【默认】就是这种方式             * ImmediateRequeueMessageRecoverer：重试耗尽后，返回nack，消息重新入队（Immediate立刻重入队）（但是频率比没有配置消费失败重载机制低一些）             * RepublishMessageRecoverer（推荐）：重试耗尽后，将失败消息投递到指定的交换机             */            //消息接受拒绝后发送到异常队列            String errorExchange = errorExchangeQueueRelationship.get("errorExchange");            String errorRoutingKey = errorExchangeQueueRelationship.get("errorRoutingKey");            MessageRecoverer recoverer = new RepublishMessageRecoverer(rabbitTemplate, errorExchange, errorRoutingKey);            log.info("zlf.MessageRecoverer.errorExchange:{},errorRoutingKey:{}", errorExchange, errorRoutingKey);            builder.recoverer(recoverer);            values.add("adviceChain", builder.build());        }    }
    private RabbitConnectionFactoryBean getRabbitConnectionFactoryBean(RabbitProperties properties)            throws Exception {        PropertyMapper map = PropertyMapper.get();        RabbitConnectionFactoryBean factory = new RabbitConnectionFactoryBean();        map.from(properties::determineHost).whenNonNull().to(factory::setHost);        map.from(properties::determinePort).to(factory::setPort);        map.from(properties::determineUsername).whenNonNull().to(factory::setUsername);        map.from(properties::determinePassword).whenNonNull().to(factory::setPassword);        map.from(properties::determineVirtualHost).whenNonNull().to(factory::setVirtualHost);        map.from(properties::getRequestedHeartbeat).whenNonNull().asInt(Duration::getSeconds)                .to(factory::setRequestedHeartbeat);        map.from(properties::getRequestedChannelMax).to(factory::setRequestedChannelMax);        RabbitProperties.Ssl ssl = properties.getSsl();        if (ssl.determineEnabled()) {            factory.setUseSSL(true);            map.from(ssl::getAlgorithm).whenNonNull().to(factory::setSslAlgorithm);            map.from(ssl::getKeyStoreType).to(factory::setKeyStoreType);            map.from(ssl::getKeyStore).to(factory::setKeyStore);            map.from(ssl::getKeyStorePassword).to(factory::setKeyStorePassphrase);            map.from(ssl::getTrustStoreType).to(factory::setTrustStoreType);            map.from(ssl::getTrustStore).to(factory::setTrustStore);            map.from(ssl::getTrustStorePassword).to(factory::setTrustStorePassphrase);            map.from(ssl::isValidateServerCertificate)                    .to((validate) -> factory.setSkipServerCertificateValidation(!validate));            map.from(ssl::getVerifyHostname).to(factory::setEnableHostnameVerification);        }        map.from(properties::getConnectionTimeout).whenNonNull().asInt(Duration::toMillis)                .to(factory::setConnectionTimeout);        factory.afterPropertiesSet();        return factory;    }
    @Override    public void setEnvironment(Environment environment) {        // 通过Binder将environment中的值转成对象        rabbitConfig = Binder.get(environment).bind(getPropertiesPrefix(RabbitConfig.class), RabbitConfig.class).get();        exchangeQueueConfig = Binder.get(environment).bind(getPropertiesPrefix(ExchangeQueueConfig.class), ExchangeQueueConfig.class).get();    }
    private String getPropertiesPrefix(Class tClass) {        return Objects.requireNonNull(AnnotationUtils.getAnnotation(tClass, ConfigurationProperties.class)).prefix();    }
    @Override    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {        this.beanFactory = beanFactory;    }
}


4.总结

到此，手写rabbitMq的starter实现思路就已经全部分享完了，思路比代码更重要，代码只是一个参考，用这个思路实现更多更方便简单快捷高效的轮子，制造轮子也是一种提升和给你带来成就感的事情，累并快乐着，后面我会将我之前手写的starter全部开源出来，然后将gitHub或码云地址分享给大家，制造轮子，开源给大家使用，这本身就是一种开源的精神和乐趣，Java生态最缺的就不是轮子是好用的轮子，请在看我的文章或者是转发，请把本文的原出处和作者写上去，尊重版权，创作不易，禁止原模原样的搬过去就是自己的原创，这种是不道德的行为，见到请如实举报，或者联系本作者来举报，这个starter,说实话也是构思酝酿了好久，猛干了2-3天才干出来，颈椎都干的酸，我得休息加强锻炼身体了，说实话写这个starter还是挺累的，但是搞出来的成就感满满，也方便以后集成快速使用，配置多个的rabbitMq服务器也测试过了的，也是ok的，但是配置一个rabbitMq和多个交换机、队列和绑定关系以及3种延迟队列实现是亲自测试OK的，希望我的分享能给你帮助和启发，请一键三连，么么么哒！


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