微服务框架SpringcloudAlibaba+Nacos集成RabbiMQ-编程知识

目前公司使用jeepluscloud版本，这个版本没有集成消息队列，这里记录一下，集成的过程；这个框架跟ruoyi的那个微服务版本结构一模一样，所以也可以快速上手。

1.项目结构图：

配置类的东西做成一个公共的模块

在这里插入图片描述

rabbitmq模块:

在这里插入图片描述

2.核心配置

1.pom类

<?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>jeeplus-common</artifactId><groupId>org.jeeplus</groupId><version>${revision}</version></parent><modelVersion>4.0.0</modelVersion><artifactId>jeeplus-common-rabbitmq</artifactId><packaging>jar</packaging><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-amqp</artifactId></dependency><dependency><groupId>org.jeeplus</groupId><artifactId>jeeplus-common-core</artifactId><version>${project.parent.version}</version></dependency></dependencies>
</project>

2.ConditionalOnRabbit

package com.jeeplus.common.rabbit.conditional;import org.springframework.context.annotation.Conditional;import java.lang.annotation.*;/*** 判断系统是否在启用了Rabbit, 未启用的情况下不将Bean注册到系统中** 使用场景: 在不使用Rabbit中间件但未去除Rabbit依赖的情况下, 通过配置文件中关闭Rabbit选项，* 同时将这个注解到有`@RabbitListener`标志的类上，让这个对象不注册到Spring容器中,* 从而避免`RabbitMQ`进行无限尝试重连服务器，导致项目一直抛出异常，影响开发和使用。** @author xxm* @since 2022/12/12*/
@Target({ ElementType.TYPE })
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Conditional(OnRabbitEnable.class)
public @interface ConditionalOnRabbit {}

3.OnRabbitEnable

package com.jeeplus.common.rabbit.conditional;import com.jeeplus.common.rabbit.configuration.RabbitMqProperties;
import org.springframework.boot.context.properties.bind.Binder;
import org.springframework.context.annotation.Condition;
import org.springframework.context.annotation.ConditionContext;
import org.springframework.core.type.AnnotatedTypeMetadata;/*** 判断是否在启用了Rabbit, 用来控制在没启用Rabbit情况下. 不将 @RabbitListener 修饰的监听器注册为Bean, 不然会导致无限尝试重连** @author xxm* @since 2022/12/12*/
public class OnRabbitEnable implements Condition {private final String rabbitPropertiesPrefix = "com.jeeplus.common.rabbit";/*** @param context* @param metadata* @return*/@Overridepublic boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) {RabbitMqProperties rabbitMqProperties = Binder.get(context.getEnvironment()).bind(rabbitPropertiesPrefix, RabbitMqProperties.class).orElse(new RabbitMqProperties());return rabbitMqProperties.isEnable();}}

4.BootxRabbitListenerConfigurer

package com.jeeplus.common.rabbit.configuration;import lombok.RequiredArgsConstructor;
import org.springframework.amqp.rabbit.annotation.RabbitListenerConfigurer;
import org.springframework.amqp.rabbit.listener.RabbitListenerEndpointRegistrar;
import org.springframework.context.annotation.Configuration;
import org.springframework.messaging.handler.annotation.support.DefaultMessageHandlerMethodFactory;/*** Rabbit 侦听器配置器** @author xxm* @since 2021/6/25*/
@Configuration
@RequiredArgsConstructor
public class BootxRabbitListenerConfigurer implements RabbitListenerConfigurer {private final DefaultMessageHandlerMethodFactory jsonHandlerMethodFactory;@Overridepublic void configureRabbitListeners(RabbitListenerEndpointRegistrar registrar) {registrar.setMessageHandlerMethodFactory(jsonHandlerMethodFactory);}}

5.BootxRabbitListenerConfigurer

package com.jeeplus.common.rabbit.configuration;import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.amqp.rabbit.annotation.EnableRabbit;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.messaging.converter.MappingJackson2MessageConverter;
import org.springframework.messaging.handler.annotation.support.DefaultMessageHandlerMethodFactory;/*** 消息队列配置** @author xxm* @since 2021/6/25*/
@EnableRabbit
@Configuration
public class RabbitMqConfigurer {/*** 注册 RabbitTemplate 对象, 使用默认序列化方式*/@Beanpublic RabbitTemplate rabbitTemplate(ConnectionFactory connectionFactory, ObjectMapper objectMapper) {RabbitTemplate rabbitTemplate = new RabbitTemplate(connectionFactory);// 使用系统同版jackson 序列化配置rabbitTemplate.setMessageConverter(new Jackson2JsonMessageConverter(objectMapper));return rabbitTemplate;}/*** 添加默认消息序列化方式, 使用默认序列化方式*/@Beanpublic DefaultMessageHandlerMethodFactory jsonHandlerMethodFactory(ObjectMapper objectMapper) {DefaultMessageHandlerMethodFactory factory = new DefaultMessageHandlerMethodFactory();// 这里的转换器设置实现了 通过 @Payload 注解 自动反序列化message bodyMappingJackson2MessageConverter converter = new MappingJackson2MessageConverter();converter.setObjectMapper(objectMapper);factory.setMessageConverter(converter);return factory;}}

6.RabbitMqConfigurer

package com.jeeplus.common.rabbit.configuration;import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.amqp.rabbit.annotation.EnableRabbit;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.messaging.converter.MappingJackson2MessageConverter;
import org.springframework.messaging.handler.annotation.support.DefaultMessageHandlerMethodFactory;/*** 消息队列配置** @author xxm* @since 2021/6/25*/
@EnableRabbit
@Configuration
public class RabbitMqConfigurer {/*** 注册 RabbitTemplate 对象, 使用默认序列化方式*/@Beanpublic RabbitTemplate rabbitTemplate(ConnectionFactory connectionFactory, ObjectMapper objectMapper) {RabbitTemplate rabbitTemplate = new RabbitTemplate(connectionFactory);// 使用系统同版jackson 序列化配置rabbitTemplate.setMessageConverter(new Jackson2JsonMessageConverter(objectMapper));return rabbitTemplate;}/*** 添加默认消息序列化方式, 使用默认序列化方式*/@Beanpublic DefaultMessageHandlerMethodFactory jsonHandlerMethodFactory(ObjectMapper objectMapper) {DefaultMessageHandlerMethodFactory factory = new DefaultMessageHandlerMethodFactory();// 这里的转换器设置实现了 通过 @Payload 注解 自动反序列化message bodyMappingJackson2MessageConverter converter = new MappingJackson2MessageConverter();converter.setObjectMapper(objectMapper);factory.setMessageConverter(converter);return factory;}}

7.RabbitMqProperties

package com.jeeplus.common.rabbit.configuration;import com.jeeplus.common.rabbit.conditional.ConditionalOnRabbit;
import lombok.Getter;
import lombok.Setter;
import org.springframework.boot.context.properties.ConfigurationProperties;/*** MQTT配置** @author xxm* @since 2022/12/12*/
@Getter
@Setter
@ConfigurationProperties("com.jeeplus.common.rabbit")
public class RabbitMqProperties {/*** 是否开启 RabbitMQ功能,* @see ConditionalOnRabbit 配合此注解使用*/private boolean enable = false;}

8.RabbitMqCommonAutoConfiguration

package com.jeeplus.common.rabbit;import org.springframework.boot.autoconfigure.SpringBootApplication;/*** RabbitMQ配置** @author xxm* @since 2022/5/3*/
@SpringBootApplication
public class RabbitMqCommonAutoConfiguration {}