java - 无法构建实体管理器工厂 - JPA/Hibernate

Question

我想将带有 hibernate/jpa 的数据库添加到我的 java 应用程序中，但我收到各种错误消息，表明无法构建实体管理器工厂，并且时区错误(我猜我可以在本地服务器上修复) )。我的 persistence.xml:

<?xml version="1.0" encoding="UTF-8"?>
<persistence 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"
             version="2.0">
    <persistence-unit name="org.hibernate.tutorial.jpa">
        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
        <properties>
            <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>
            <property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/golist2019"/>
            <property name="hibernate.connection.autocommit" value="false"/>
            <property name="hibernate.connection.username" value="root"/>
            <property name="hibernate.connection.password" value="root"/>
            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect"/>
            <property name="hibernate.connection.CharSet" value="utf8"/>
            <property name="hibernate.connection.characterEncoding" value="utf8"/>
            <property name="hibernate.connection.useUnicode" value="true"/>
            <property name="hibernate.show_sql" value="true"/>
            <property name="hibernate.hbm2ddl.auto" value="update"/>
            <!-- use encache provider-->
            <!--<property name="hibernate.cache.region.factory_class"-->
            <!--value="org.hibernate.cache.ehcache.EhCacheRegionFactory"/>-->
            <!--<property name="hibernate.javax.cache.provider" value="org.ehcache.jsr107.EhcacheCachingProvider"/>-->
            <!--&lt;!&ndash;use second level cache&ndash;&gt;-->
            <!--<property name="hibernate.cache.use_second_level_cache" value="true"/>-->
            <!--&lt;!&ndash;use 3rd level cache&ndash;&gt;-->
            <!--<property name="hibernate.cache.use_query_cache" value="true"/>-->
        </properties>
    </persistence-unit>
</persistence>

我的pom.xml:

<?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">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.mycompany.app</groupId>
    <artifactId>GoCheap</artifactId>
    <packaging>jar</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>Maven Quick Start Archetype</name>
    <url>http://maven.apache.org</url>
    <properties>
        <java.version>11</java.version>
        <maven.compiler.source>11</maven.compiler.source>
        <maven.compiler.target>11</maven.compiler.target>
    </properties>
    <dependencies>
        <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.17</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-core -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <!--<version>5.4.4.Final</version>-->
            <version>6.0.0.Alpha2</version>
            <type>pom</type>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>5.1.0.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate.javax.persistence</groupId>
            <artifactId>hibernate-jpa-2.1-api</artifactId>
            <version>1.0.0.Final</version>
        </dependency>





    </dependencies>

</project>

我的主要功能:

 EntityManagerFactory sessionFactory = Persistence.createEntityManagerFactory( "org.hibernate.tutorial.jpa" );
        EntityManager entityManager = sessionFactory.createEntityManager();
        entityManager.getTransaction().begin();

        Bank bank1 = new Bank();
        bank1.name ="Testbank";
        entityManager.persist(bank1);

        entityManager.getTransaction().commit();
        entityManager.close();

但我收到以下错误:

"C:\Program Files\JetBrains\IntelliJ IDEA 2019.2\jbr\bin\java.exe" "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA 2019.2\lib\idea_rt.jar=54797:C:\Program Files\JetBrains\IntelliJ IDEA 2019.2\bin" -Dfile.encoding=UTF-8 -classpath C:\Users\Emanuel\IdeaProjects\GoCheap\target\classes;C:\Users\Emanuel\.m2\repository\mysql\mysql-connector-java\8.0.17\mysql-connector-java-8.0.17.jar;C:\Users\Emanuel\.m2\repository\com\google\protobuf\protobuf-java\3.6.1\protobuf-java-3.6.1.jar;C:\Users\Emanuel\.m2\repository\org\jboss\logging\jboss-logging\3.3.2.Final\jboss-logging-3.3.2.Final.jar;C:\Users\Emanuel\.m2\repository\javax\persistence\javax.persistence-api\2.2\javax.persistence-api-2.2.jar;C:\Users\Emanuel\.m2\repository\org\javassist\javassist\3.24.0-GA\javassist-3.24.0-GA.jar;C:\Users\Emanuel\.m2\repository\net\bytebuddy\byte-buddy\1.9.5\byte-buddy-1.9.5.jar;C:\Users\Emanuel\.m2\repository\org\antlr\antlr4\4.7.1\antlr4-4.7.1.jar;C:\Users\Emanuel\.m2\repository\org\antlr\antlr4-runtime\4.7.1\antlr4-runtime-4.7.1.jar;C:\Users\Emanuel\.m2\repository\org\antlr\antlr-runtime\3.5.2\antlr-runtime-3.5.2.jar;C:\Users\Emanuel\.m2\repository\org\antlr\ST4\4.0.8\ST4-4.0.8.jar;C:\Users\Emanuel\.m2\repository\org\abego\treelayout\org.abego.treelayout.core\1.0.3\org.abego.treelayout.core-1.0.3.jar;C:\Users\Emanuel\.m2\repository\org\glassfish\javax.json\1.0.4\javax.json-1.0.4.jar;C:\Users\Emanuel\.m2\repository\com\ibm\icu\icu4j\58.2\icu4j-58.2.jar;C:\Users\Emanuel\.m2\repository\org\jboss\spec\javax\transaction\jboss-transaction-api_1.2_spec\1.1.1.Final\jboss-transaction-api_1.2_spec-1.1.1.Final.jar;C:\Users\Emanuel\.m2\repository\org\jboss\jandex\2.0.5.Final\jandex-2.0.5.Final.jar;C:\Users\Emanuel\.m2\repository\com\fasterxml\classmate\1.3.4\classmate-1.3.4.jar;C:\Users\Emanuel\.m2\repository\javax\activation\javax.activation-api\1.2.0\javax.activation-api-1.2.0.jar;C:\Users\Emanuel\.m2\repository\org\dom4j\dom4j\2.1.1\dom4j-2.1.1.jar;C:\Users\Emanuel\.m2\repository\org\hibernate\common\hibernate-commons-annotations\5.1.0.Final\hibernate-commons-annotations-5.1.0.Final.jar;C:\Users\Emanuel\.m2\repository\javax\xml\bind\jaxb-api\2.3.1\jaxb-api-2.3.1.jar;C:\Users\Emanuel\.m2\repository\org\glassfish\jaxb\jaxb-runtime\2.3.1\jaxb-runtime-2.3.1.jar;C:\Users\Emanuel\.m2\repository\org\glassfish\jaxb\txw2\2.3.1\txw2-2.3.1.jar;C:\Users\Emanuel\.m2\repository\com\sun\istack\istack-commons-runtime\3.0.7\istack-commons-runtime-3.0.7.jar;C:\Users\Emanuel\.m2\repository\org\jvnet\staxex\stax-ex\1.8\stax-ex-1.8.jar;C:\Users\Emanuel\.m2\repository\com\sun\xml\fastinfoset\FastInfoset\1.2.15\FastInfoset-1.2.15.jar;C:\Users\Emanuel\.m2\repository\org\hibernate\hibernate-entitymanager\5.1.0.Final\hibernate-entitymanager-5.1.0.Final.jar;C:\Users\Emanuel\.m2\repository\org\hibernate\hibernate-core\5.1.0.Final\hibernate-core-5.1.0.Final.jar;C:\Users\Emanuel\.m2\repository\antlr\antlr\2.7.7\antlr-2.7.7.jar;C:\Users\Emanuel\.m2\repository\dom4j\dom4j\1.6.1\dom4j-1.6.1.jar;C:\Users\Emanuel\.m2\repository\xml-apis\xml-apis\1.0.b2\xml-apis-1.0.b2.jar;C:\Users\Emanuel\.m2\repository\org\apache\geronimo\specs\geronimo-jta_1.1_spec\1.1.1\geronimo-jta_1.1_spec-1.1.1.jar;C:\Users\Emanuel\.m2\repository\org\hibernate\javax\persistence\hibernate-jpa-2.1-api\1.0.0.Final\hibernate-jpa-2.1-api-1.0.0.Final.jar Main
Sep. 14, 2019 9:11:27 NACHM. org.hibernate.jpa.internal.util.LogHelper logPersistenceUnitInformation
INFO: HHH000204: Processing PersistenceUnitInfo [
    name: org.hibernate.tutorial.jpa
    ...]
Sep. 14, 2019 9:11:27 NACHM. org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {5.1.0.Final}
Sep. 14, 2019 9:11:27 NACHM. org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
Sep. 14, 2019 9:11:27 NACHM. org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
Sep. 14, 2019 9:11:27 NACHM. org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {5.1.0.Final}
Sep. 14, 2019 9:11:27 NACHM. org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
WARN: HHH10001002: Using Hibernate built-in connection pool (not for production use!)
Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.
Sep. 14, 2019 9:11:27 NACHM. org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001005: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://localhost:3306/golist2019]
Sep. 14, 2019 9:11:27 NACHM. org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001001: Connection properties: {CharSet=utf8, password=****, autocommit=false, useUnicode=true, characterEncoding=utf8, user=root}
Sep. 14, 2019 9:11:27 NACHM. org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001003: Autocommit mode: false
Sep. 14, 2019 9:11:27 NACHM. org.hibernate.engine.jdbc.connections.internal.PooledConnections <init>
INFO: HHH000115: Hibernate connection pool size: 20 (min=1)
Exception in thread "main" javax.persistence.PersistenceException: Unable to build entity manager factory
    at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:66)
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:79)
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:54)
    at Main.setUp(Main.java:11)
    at Main.main(Main.java:7)
Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:244)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:208)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:189)
    at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:51)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:94)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:217)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:189)
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.handleTypes(MetadataBuildingProcess.java:352)
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:111)
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:848)
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:876)
    at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:58)
    ... 4 more
Caused by: org.hibernate.exception.JDBCConnectionException: Error calling Driver#connect
    at org.hibernate.engine.jdbc.connections.internal.BasicConnectionCreator$1$1.convert(BasicConnectionCreator.java:105)
    at org.hibernate.engine.jdbc.connections.internal.BasicConnectionCreator.convertSqlException(BasicConnectionCreator.java:123)
    at org.hibernate.engine.jdbc.connections.internal.DriverConnectionCreator.makeConnection(DriverConnectionCreator.java:41)
    at org.hibernate.engine.jdbc.connections.internal.BasicConnectionCreator.createConnection(BasicConnectionCreator.java:58)
    at org.hibernate.engine.jdbc.connections.internal.PooledConnections.addConnections(PooledConnections.java:106)
    at org.hibernate.engine.jdbc.connections.internal.PooledConnections.<init>(PooledConnections.java:40)
    at org.hibernate.engine.jdbc.connections.internal.PooledConnections.<init>(PooledConnections.java:19)
    at org.hibernate.engine.jdbc.connections.internal.PooledConnections$Builder.build(PooledConnections.java:138)
    at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.buildPool(DriverManagerConnectionProviderImpl.java:110)
    at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.configure(DriverManagerConnectionProviderImpl.java:74)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:94)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:217)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:189)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.buildJdbcConnectionAccess(JdbcEnvironmentInitiator.java:145)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:66)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:88)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:234)
    ... 15 more
Caused by: java.sql.SQLException: The server time zone value 'Mitteleurop�ische Sommerzeit' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone support.
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129)
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97)
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89)
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63)
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73)
    at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:76)
    at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:827)
    at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:447)
    at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:237)
    at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199)
    at org.hibernate.engine.jdbc.connections.internal.DriverConnectionCreator.makeConnection(DriverConnectionCreator.java:38)
    ... 30 more
Caused by: com.mysql.cj.exceptions.InvalidConnectionAttributeException: The server time zone value 'Mitteleurop�ische Sommerzeit' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone support.
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
    at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
    at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:85)
    at com.mysql.cj.util.TimeUtil.getCanonicalTimezone(TimeUtil.java:132)
    at com.mysql.cj.protocol.a.NativeProtocol.configureTimezone(NativeProtocol.java:2139)
    at com.mysql.cj.protocol.a.NativeProtocol.initServerSession(NativeProtocol.java:2163)
    at com.mysql.cj.jdbc.ConnectionImpl.initializePropsFromServer(ConnectionImpl.java:1301)
    at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:958)
    at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:817)
    ... 34 more

Process finished with exit code 1

Answer 1

修正你的时区! :

Caused by: com.mysql.cj.exceptions.InvalidConnectionAttributeException: The server time zone value 'Mitteleurop�ische Sommerzeit' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone support.