我正在尝试使用eclipselink学习jpa。我使用mysql作为我的数据库。我已经添加了所有需要的依赖项，下面是我的pom.xml

<dependency>
        <groupId>org.eclipse.persistence</groupId>
        <artifactId>eclipselink</artifactId>
        <version>2.7.0</version>
        <exclusions>
            <exclusion>
                <groupId>org.eclipse.persistence</groupId>
                <artifactId>javax.persistence</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.eclipse.persistence</groupId>
        <artifactId>javax.persistence</artifactId>
        <version>2.1.1</version>
    </dependency>

    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>8.0.11</version>
        <scope>runtime</scope>
    </dependency>

</dependencies>

问题是，即使maven已经下载了mysql jdbc连接器所需的所有jar，我还是得到了异常描述：configuration error。找不到类[com.mysql.cj.jdbc.driver]。以下是我正在使用的版本：1。mysql jdbc连接器：8.0.11.2。Eclipse：2.7.13。jpa:2.2.0版本
附件是我的maven依赖jars的截图。
我尝试了stackoverflow上其他线程的所有建议，但无法解决问题。
感谢您的帮助和提前感谢！
下面是我的persistence.xml

<?xml version="1.0" encoding="UTF-8"?>

<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
   xsi:schemaLocation="http://java.sun.com/xml/ns/persistence 
   http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">

   <persistence-unit name="Eclipselink_JPA" transaction-type="RESOURCE_LOCAL">

      <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
      <exclude-unlisted-classes>false</exclude-unlisted-classes>

      <properties>
         <property name="javax.persistence.jdbc.driver" value="com.mysql.cj.jdbc.Driver"/>
         <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/jpadb"/>
         <property name="javax.persistence.jdbc.user" value="root"/>
         <property name="javax.persistence.jdbc.password" value="root"/>
         <property name="eclipselink.logging.level" value="FINE"/>
         <property name="eclipselink.ddl-generation" value="create-tables"/>
      </properties>

   </persistence-unit>
</persistence>

另外，添加错误堆栈跟踪：
[el fine]：服务器：2018-06-24 17:33:10.619——线程（thread[main，5，main]）——配置的服务器平台：org.eclipse.persistence.platform.server.noserverplatform[el info]：2018-06-24 17:33:11.065——服务器会话（1101598632）——线程（thread[main，5，main]）——eclipseelink，版本：eclipse persistence services-2.6.5.v20170607-b3d05bd[el severe]：ejb:2018-06-24 17:33:11.068--serversession（1101598632）--线程（thread[main，5，main]）--异常[eclipseelink-4003]（eclipse persistence services-2.6.5.v20170607-b3d05bd）：org.eclipse.persistence.exceptions.databaseexception异常描述：配置错误。找不到类[com.mysql.cj.jdbc.driver]。线程“main”javax.persistence.persistenceexception中的异常：异常[eclipseelink-4003]（eclipse persistence services-2.6.5.v20170607-b3d05bd）：org.eclipse.persistence.exceptions.databaseexception异常描述：配置错误。找不到类[com.mysql.cj.jdbc.driver]。位于org.eclipse.persistence.internal.jpa.entitymanagersetupimpl.deploy（entitymanagersetupimpl。java:818)位于org.eclipse.persistence.internal.jpa.entitymanagerfactorydelegate.getabstractsession（entitymanagerfactorydelegate）。java:207)在org.eclipse.persistence.internal.jpa.entitymanagerfactorydelegate.createentitymanagerimpl（entitymanagerfactorydelegate）。java:307)位于org.eclipse.persistence.internal.jpa.entitymanagerfactoryimpl.createentitymanagerimpl（entitymanagerfactoryimpl）。java:337)在org.eclipse.persistence.internal.jpa.entitymanagerfactoryimpl.createentitymanager（entitymanagerfactoryimpl。java:303)在practice.jpa.persistence.app.main（app。java:17)引起原因：异常[eclipselink-4003]（eclipse persistence services-2.6.5.v20170607-b3d05bd）：org.eclipse.persistence.exceptions.databaseexception异常描述：配置错误。找不到类[com.mysql.cj.jdbc.driver]。在org.eclipse.persistence.exceptions.databaseexception.configurationerrorclassnotfound（databaseexception。java:89)位于org.eclipse.persistence.sessions.defaultconnector.loaddriverclass（defaultconnector。java:267)在org.eclipse.persistence.sessions.defaultconnector.connect（defaultconnector。java:85)在org.eclipse.persistence.sessions.datasourcelogin.connecttodatasource（datasourcelogin。java:162)在org.eclipse.persistence.internal.sessions.databasesessionimpl.setordetectdatasource（databasesessionimpl。java:214)在org.eclipse.persistence.internal.sessions.databasesessionimpl.login和detectdatasource（databasesessionimpl。java:776)在org.eclipse.persistence.internal.jpa.entitymanagerfactoryprovider.login（entitymanagerfactoryprovider）。java:265)位于org.eclipse.persistence.internal.jpa.entitymanagersetupimpl.deploy（entitymanagersetupimpl。java:734) ... 5个以上