spring 集成rabbitmq 遇到的问题：版本配置_spring-rabbit版本选择

版本配置时，遇到了一个小问题，记录一下；

pom.xml配置文件中，依赖的组件比较旧了，需要更新；
<!--消息队列-->
<dependency>
    <groupId>com.rabbitmq</groupId>
    <artifactId>amqp-client</artifactId>
    <version>3.5.1</version>
</dependency>
<dependency>
    <groupId>org.springframework.amqp</groupId>
    <artifactId>spring-rabbit</artifactId>
    <version>1.4.5.RELEASE</version>
</dependency>

更新到新版本

<dependency>
    <groupId>com.rabbitmq</groupId>
    <artifactId>amqp-client</artifactId>
    <version>5.6.0</version>
</dependency>
<dependency>
    <groupId>org.springframework.amqp</groupId>
    <artifactId>spring-rabbit</artifactId>
    <version>2.1.4.RELEASE</version>
</dependency>

1、spring-rabbit组件 依赖 amqp-client组件，并且，之间的版本号，也要匹配好，不然，运行时就会出错；

https://mvnrepository.com/artifact/org.springframework.amqp/spring-rabbit/1.4.5.RELEASE

https://mvnrepository.com/artifact/org.springframework.amqp/spring-rabbit/2.1.4.RELEASE

2、application-context.xml文件中，rabbit组件版本修改后，xsd文件配置spring rabbit相关对象，引用的xsd定义文件，也要匹配；

旧的写法，指定了 spring-rabbit-1.0.xsd 特定版本的xml schema文件，不匹配 spring-rabbit 2.1.4.RELEASE 版本；

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns="http://www.springframework.org/schema/beans"
       xmlns:rabbit="http://www.springframework.org/schema/rabbit"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
       http://www.springframework.org/schema/rabbit
       http://www.springframework.org/schema/rabbit/spring-rabbit-1.0.xsd">
 
    <!-- 连接配置 -->
    <rabbit:connection-factory id="connectionFactory" host="${mq.host}" username="${mq.username}"
                               password="${mq.password}" port="${mq.port}" />
 
    <rabbit:admin connection-factory="connectionFactory" />

修改后，去掉版本号后缀；

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns="http://www.springframework.org/schema/beans"
       xmlns:rabbit="http://www.springframework.org/schema/rabbit"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
       http://www.springframework.org/schema/rabbit
       http://www.springframework.org/schema/rabbit/spring-rabbit.xsd">
 
    <!-- 连接配置 -->
    <rabbit:connection-factory id="rabbitConnectionFactory" host="${mq.host}" username="${mq.username}"
                               password="${mq.password}" port="${mq.port}" />
 
    <rabbit:admin connection-factory="rabbitConnectionFactory" />在IDEA中，点击 rabbit:connection-factory 标签，会跳转该标签所在jar包的xsd定义文件中；

==》修改成 spring-rabbit.xsd 后，应该是优先到jar包中找对应的xsd定义文件吧；

     （TODO 有空要确认下spring在这方面的机制）