SQLException : Driver : org.hsqldb.jdbcDriver가 tomee의 URL에 대해 null을 반환했습니다.

Question

tomee 배포 응용 프로그램에서 다음 예외가 발생합니다.

[EL Severe]: 2014-07-11 09:18:34.811--ServerSession(860687693)--Thread(Thread[http-bio-8081-exec-3,5,main])--Local Exception Stack: 
Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.5.1.v20130918-f2b9fc5): org.eclipse.persistence.exceptions.DatabaseException 
Internal Exception: java.sql.SQLException: Driver:org.hsqldb.jdbcDriver@7078c2bb returned null for URL:"jdbc:mysql://localhost:3306/testDB" 
Error Code: 0 
    at org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:316) 
    at org.eclipse.persistence.sessions.JNDIConnector.connect(JNDIConnector.java:135) 
    at org.eclipse.persistence.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:162) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.setOrDetectDatasource(DatabaseSessionImpl.java:204) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:741) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:239) 
    at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:685) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getAbstractSession(EntityManagerFactoryDelegate.java:204) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:304) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:336) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:309) 
    at org.apache.openejb.assembler.classic.ReloadableEntityManagerFactory.createEntityManager(ReloadableEntityManagerFactory.java:159) 
    at org.apache.openejb.persistence.JtaEntityManagerRegistry.getEntityManager(JtaEntityManagerRegistry.java:115) 
    at org.apache.openejb.persistence.JtaEntityManager.getEntityManager(JtaEntityManager.java:91) 
    at org.apache.openejb.persistence.JtaEntityManager.find(JtaEntityManager.java:164) 

을 heres 내 tomee.xml 파일,

<tomee> 
    <Resource id="testDBPool" type="DataSource"> 
    jdbcDriverClassName = "com.mysql.jdbc.Driver" 
    url = "jdbc:mysql://localhost:3306/testDB" 
    username = "admin" 
    password = "admin" 
    </Resource> 
</tomee> 

난 이미 내 tomee/lib에 폴더에 mysql_connector 항아리를 넣어. 다음과 같이 내 의 persistence.xml 파일,

<?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="TestPersistence" 
     transaction-type="JTA"> 
     <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider> 
     <jta-data-source>jdbc/testDBPool</jta-data-source> 
     <shared-cache-mode>NONE</shared-cache-mode> 
     <properties> 
      <property name="eclipselink.weaving" value="static" /> 
      <property name="eclipselink.logging.level.sql" value="FINEST" /> 
      <property name="eclipselink.logging.level" value="FINEST" /> 
      <property name="eclipselink.logging.level.cache" value="FINEST" /> 
     </properties> 
    </persistence-unit> 
</persistence> 

나는 내가 잘못 위치를 이해하지 못하고, 내가 왜이 예외는 무엇입니까? 이 문제를 해결하도록 도와주세요.

Answer 1

문제는 잘못된 속성 이름을 사용하여 JDBC 드라이버를 선언하는 것입니다. Apache TomEE: DataSource Configuration에 따르면 드라이버 이름의 속성은 jdbcDriver이며 jdbcDriverClassName이 아닙니다. jdbcDriver의 기본값은 org.hsqldb.jdbcDriver입니다. 따라서 앞서 언급 한 것처럼 HSQLDB를 사용하여 연결을 만들려고하지만 MySQL JDBC URL을 사용하여 연결을 시도합니다. 문제가 구성을 변경 수정하려면

:

<tomee> 
    <Resource id="testDBPool" type="DataSource"> 
    jdbcDriver = "com.mysql.jdbc.Driver" 
    ... 
    </Resource> 
</tomee>