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  • ActiveMQ JBDC巨坑记录:java.sql.SQLException: Cannot create PoolableConnectionFactory (Communications link failure,Cannot create PoolableConnectionFactory (Communications link failure

    1.解决ActiveMq与JDBC持久化巨坑、我用的mysql5.7,提示日志如下:

      日志在:data/activemq.log

    1. JDBCPersistenceAdapter(org.apache.commons.dbcp2.BasicDataSource@18bcceb4)
    2.  Could not get JDBC connection: Cannot create PoolableConnectionFactory (Communications link failure
    3. java.sql.SQLException: Cannot create PoolableConnectionFactory (Communications link failure
    4. cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.apache.activemq.xbean.XBeanBrokerService#0' defined in class path resource [activemq.xml]: Invocation of init method failed; nested exception is java.io.IOException: Cannot create PoolableConnectionFactory (Communications link failure

    2.找了正正3小时,完美解决

    在stackoverflow上找到,是因为没有配置SSL,连接:https://stackoverflow.com/questions/63988683/active-mq-able-to-connect-to-other-machine-mysql-but-not-local-machine-mysql

    	<bean id="mysql-ds" class="org.apache.commons.dbcp2.BasicDataSource" 
    		destroy-method="close">
    		<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
    		<property name="url" 
    		value="jdbc:mysql://localhost:3306/activemq?relaxAutoCommit=true&useSSL=false"/>
    		<property name="username" value="root"/>
    		<property name="password" value="123456"/>
    		<property name="poolPreparedStatements" value="true"/>
    	</bean>
    

      

    3.附加说一句:网上什么电脑主机有下划线,DBCP2和DBCP1我都试过了,快怀疑人生了........幸好找到解决方法了

    4.ActiveMq和jdbc配置详细步骤:

    • 1.在mq中加入mysql驱动,,我是5.7加入的mysql-connector-java-5.1.38.jar也能用。

    • 2.配置mysql持久注入连接池,注意 在    </broker>下 和 <import resource="jetty.xml"/>上面配置

        <!-- mysql 持久配置 -->
        <!--创建mysql数据源,官网示例使用的dbcp2,若要使用其他数据源需要拷贝jar包到lib下 -->
        <!-- bean标签需要写在</broker>之后,<import /> 之前 -->
        <bean id="mysql-ds" class="org.apache.commons.dbcp2.BasicDataSource" 
            destroy-method="close">
            <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
            <property name="url" 
            value="jdbc:mysql://localhost:3306/activemq?relaxAutoCommit=true&amp;useSSL=false"/>
            <property name="username" value="root"/>
            <property name="password" value="123456"/>
            <property name="poolPreparedStatements" value="true"/>
        </bean>
    • 3.配置msyql持久化:
    <!-- <persistenceAdapter>
      <kahaDB directory="${activemq.data}/kahadb"/>
    </persistenceAdapter>-->

    <!--这行代码需要在mysql里面手动建库activemq,   标签createTableOnStartup他会在mq启动时候自己创建三张表,主要为了创建表  -->
    <persistenceAdapter> <jdbcPersistenceAdapter dataSource="#mysql-ds" createTablesOnStartup="true" /> </persistenceAdapter>
    • 4.注释第三部,加入高性能的持久方式
         <!--<persistenceAdapter>
                <jdbcPersistenceAdapter dataSource="#mysql-ds"  createTablesOnStartup="true"/>
            </persistenceAdapter>
         -->
            <!--消息存储持久化JDBC message store with activemq journal-->
            <persistenceFactory>
                <journalPersistenceAdapterFactory 
                    journalLogFiles="4" 
                    journalLogFileSize="32768" 
                    useJournal="true" 
                    useQuickJournal="true"
                    dataSource="#mysql-ds"
                    dataDirectory="activemq-data"/>
            </persistenceFactory>
    • 5.可以配置客户端nio高性能方式调用

    <transportConnector name="auto+nio" uri="auto+nio://0.0.0.0:61608?maximumConnections=1000&amp;wireFormat.maxFrameSize=104857600&amp;org.apache.activemq.transport.nio.SelectorManager.corelPoolSize=20&amp;org.apache.activemq.transport.nio.SelectorManager.maximumPoolSize=50"/>

     <transportConnectors>
                <!-- DOS protection, limit concurrent connections to 1000 and frame size to 100MB -->
                <transportConnector name="openwire" uri="tcp://0.0.0.0:61616?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>
                <transportConnector name="amqp" uri="amqp://0.0.0.0:55672?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>
                <transportConnector name="stomp" uri="stomp://0.0.0.0:61613?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>
                <transportConnector name="mqtt" uri="mqtt://0.0.0.0:1883?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>
                <transportConnector name="ws" uri="ws://0.0.0.0:61614?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>
    	<transportConnector name="auto+nio" uri="auto+nio://0.0.0.0:61608?maximumConnections=1000&wireFormat.maxFrameSize=104857600&
    org.apache.activemq.transport.nio.SelectorManager.corelPoolSize=20&org.apache.activemq.transport.nio.SelectorManager.maximumPoolSize=50"/>
    </transportConnectors>

      

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  • 原文地址:https://www.cnblogs.com/douyu2580860/p/14692986.html
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