Mysql 如何修复hibernate配置错误和ExceptionInInitializeError_Mysql_Hibernate

Mysql 如何修复hibernate配置错误和ExceptionInInitializeError

mysql hibernate

Mysql 如何修复hibernate配置错误和ExceptionInInitializeError,mysql,hibernate,Mysql,Hibernate,我正在尝试运行一个基本的hibernate hello world程序，该程序将从数据库中获取员工详细信息并打印“hello employee_name”。但我不知道哪里出了问题，它不断地向我显示无效的配置错误 Aug 30, 2018 6:19:35 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit> INFO: HCANN000001: Hibernate Commo

我正在尝试运行一个基本的hibernate hello world程序，该程序将从数据库中获取员工详细信息并打印“hello employee_name”。但我不知道哪里出了问题，它不断地向我显示无效的配置错误

Aug 30, 2018 6:19:35 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {4.0.4.Final}
Aug 30, 2018 6:19:35 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {4.3.5.Final}
Aug 30, 2018 6:19:35 PM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
Aug 30, 2018 6:19:35 PM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
Aug 30, 2018 6:19:36 PM org.hibernate.cfg.Configuration configure
INFO: HHH000043: Configuring from resource: /hibernate.cfg.xml
Aug 30, 2018 6:19:36 PM org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: HHH000040: Configuration resource: /hibernate.cfg.xml
Initial SessionFactory creation failedorg.hibernate.MappingException: invalid configuration
Exception in thread "main" java.lang.ExceptionInInitializerError
    at hibernatePack.hibernateUtil.<clinit>(hibernateUtil.java:28)
    at hibernatePack.model.hibernateHelloWorld.main(hibernateHelloWorld.java:17)
Caused by: org.hibernate.MappingException: invalid configuration
    at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2158)
    at org.hibernate.cfg.Configuration.configure(Configuration.java:2075)
    at hibernatePack.hibernateUtil.<clinit>(hibernateUtil.java:16)
    ... 1 more
Caused by: org.xml.sax.SAXParseException; lineNumber: 5; columnNumber: 26; Element type "hibernate-configuration" must be declared.
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.handleStartElement(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.startElement(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl$NSContentDriver.scanRootElementHook(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
    at org.dom4j.io.SAXReader.read(SAXReader.java:465)
    at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2155)
    ... 3 more

hibernateHelloWorld.java类

package hibernatePack.model;

import java.util.Iterator;
import java.util.List;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;

import hibernatePack.hibernateUtil;
import hibernatePack.model.Employee;


public class hibernateHelloWorld {
    public static void main(String[] args) throws Exception {

        SessionFactory sessionFactory = hibernateUtil.getSessionFactory();
        Session session = sessionFactory.getCurrentSession();
        org.hibernate.Transaction tr = session.beginTransaction();

        String strSql ="from Employee o";
        Query query = session.createQuery(strSql);
        List lst = query.list();
        for(Iterator it=lst.iterator();it.hasNext();){

            Employee emp=(Employee)it.next();
            System.out.println("Hello: " + emp.getEmpName());
         }

        tr.commit();
        System.out.println("Data displayed");
        sessionFactory.close();
    }
}

hibernate.cfg.xml文件

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

<!DOCTYPE hibernate-configuration>

<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/springdata</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password">pooja31</property>
<property name="hibernate.connection.pool_size">10</property>
<property name="show_sql">true</property>
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.current_session_context_class">thread</property>

<mapping class="hibernatePack.Employee" />

</session-factory>
</hibernate-configuration>

我认为您的hibernate.cfg.xml存在一些配置问题，因为hibernate无法创建sessionFactory实例

使用下面的类并删除hibernate.cfg.xml文件

    public class HibernateUtil {

   private static StandardServiceRegistry registry;
   private static SessionFactory sessionFactory;

   public static SessionFactory getSessionFactory() {
      if (sessionFactory == null) {
         try {
            BootstrapServiceRegistry bootstrapRegistry =
                  new BootstrapServiceRegistryBuilder()
                  .applyIntegrator(new EventListenerIntegrator())
                  .build();

            StandardServiceRegistryBuilder registryBuilder = 
                  new StandardServiceRegistryBuilder(bootstrapRegistry);

            Map<String, Object> settings = new HashMap<>();
            settings.put(Environment.DRIVER, "com.mysql.cj.jdbc.Driver");
            settings.put(Environment.URL, "jdbc:mysql://localhost:3306/springdata?useSSL=false");
            settings.put(Environment.USER, "root");
            settings.put(Environment.PASS, "pooja31");
            settings.put(Environment.HBM2DDL_AUTO, "update");
            settings.put(Environment.SHOW_SQL, true);


            registryBuilder.applySettings(settings);

            registry = registryBuilder.build();

            MetadataSources sources = new MetadataSources(registry)
                  .addAnnotatedClass( Employee.class)


            Metadata metadata = sources.getMetadataBuilder().build();

            sessionFactory = metadata.getSessionFactoryBuilder().build();
         } catch (Exception e) {
            if (registry != null) {
               StandardServiceRegistryBuilder.destroy(registry);
            }
            e.printStackTrace();
         }
      }
      return sessionFactory;
   }

   public static void shutdown() {
      if (registry != null) {
         StandardServiceRegistryBuilder.destroy(registry);
      }
   }
}

公共类HibernateUtil{
私有静态标准服务注册；
私有静态SessionFactory SessionFactory；
公共静态SessionFactory getSessionFactory（）{
if（sessionFactory==null）{
试一试{
BootstrapServiceRegistry bootstrapRegistry=
新的BootstrapServiceRegistryBuilder（）
.applyIntegrator（新的EventListenerIntegrator（））
.build（）；
StandardServiceRegistryBuilder注册表生成器=
新的StandardServiceRegistryBuilder（bootstrapRegistry）；
映射设置=新建HashMap（）；
settings.put（Environment.DRIVER，“com.mysql.cj.jdbc.DRIVER”）；
settings.put（Environment.URL，“jdbc:mysql://localhost:3306/springdata?useSSL=false");
settings.put（Environment.USER，“root”）；
settings.put（Environment.PASS，“pooja31”）；
settings.put（Environment.HBM2DDL_AUTO，“update”）；
settings.put（Environment.SHOW_SQL，true）；
registryBuilder.applySettings（设置）；
registry=registryBuilder.build（）；
MetadataSources sources=新的MetadataSources（注册表）
.addAnnotatedClass（Employee.class）
元数据=sources.getMetadataBuilder（）.build（）；
sessionFactory=metadata.getSessionFactoryBuilder（）.build（）；
}捕获（例外e）{
if（注册表！=null）{
StandardServiceRegistryBuilder.destroy（注册表）；
}
e、 printStackTrace（）；
}
}
返回工厂；
}
公共静态无效关机（）{
if（注册表！=null）{
StandardServiceRegistryBuilder.destroy（注册表）；
}
}
}

在hibernate.cfg.xml中，定义的映射类无效（包名称不正确）。改变

到

此外，您需要指定错误中所述的“hibernate配置”类型。尝试使用下面的配置类型

<!DOCTYPE hibernate-configuration PUBLIC  
          "-//Hibernate/Hibernate Configuration DTD 5.3//EN"  
          "http://hibernate.sourceforge.net/hibernate-configuration-5.3.dtd">

尝试修复这个，它应该会工作你可以参考：

    public class HibernateUtil {

   private static StandardServiceRegistry registry;
   private static SessionFactory sessionFactory;

   public static SessionFactory getSessionFactory() {
      if (sessionFactory == null) {
         try {
            BootstrapServiceRegistry bootstrapRegistry =
                  new BootstrapServiceRegistryBuilder()
                  .applyIntegrator(new EventListenerIntegrator())
                  .build();

            StandardServiceRegistryBuilder registryBuilder = 
                  new StandardServiceRegistryBuilder(bootstrapRegistry);

            Map<String, Object> settings = new HashMap<>();
            settings.put(Environment.DRIVER, "com.mysql.cj.jdbc.Driver");
            settings.put(Environment.URL, "jdbc:mysql://localhost:3306/springdata?useSSL=false");
            settings.put(Environment.USER, "root");
            settings.put(Environment.PASS, "pooja31");
            settings.put(Environment.HBM2DDL_AUTO, "update");
            settings.put(Environment.SHOW_SQL, true);


            registryBuilder.applySettings(settings);

            registry = registryBuilder.build();

            MetadataSources sources = new MetadataSources(registry)
                  .addAnnotatedClass( Employee.class)


            Metadata metadata = sources.getMetadataBuilder().build();

            sessionFactory = metadata.getSessionFactoryBuilder().build();
         } catch (Exception e) {
            if (registry != null) {
               StandardServiceRegistryBuilder.destroy(registry);
            }
            e.printStackTrace();
         }
      }
      return sessionFactory;
   }

   public static void shutdown() {
      if (registry != null) {
         StandardServiceRegistryBuilder.destroy(registry);
      }
   }
}

<mapping class="hibernatePack.Employee" />

<mapping class="hibernatePack.model.Employee" />

<!DOCTYPE hibernate-configuration PUBLIC  
          "-//Hibernate/Hibernate Configuration DTD 5.3//EN"  
          "http://hibernate.sourceforge.net/hibernate-configuration-5.3.dtd">