I know that there are similar questions already, but the answers there didn't help me. So please would you mind to take a look at my particular question?
I am not very experienced with Hibernate yet and hava a problem when trying to create test data for my local database with Hibernate 4.3 and PostgreSQL.
I had another project where I did this exactly the same way and there it worked, so I did exactly the same setup but with another database, but now in my current project I get the following exception:
exception.DBException: Could not configure Hibernate!
at dao.BenutzerDAO.<init>(BenutzerDAO.java:48)
at export.ExportDBSchema.main(ExportDBSchema.java:16)
Caused by: org.hibernate.boot.registry.classloading.spi.ClassLoadingException: Unable to load class [org.postgresql.Driver]
at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:245)
at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.loadDriverIfPossible(DriverManagerConnectionProviderImpl.java:200)
at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.buildCreator(DriverManagerConnectionProviderImpl.java:156)
at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.configure(DriverManagerConnectionProviderImpl.java:95)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:89)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:206)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:178)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.buildJdbcConnectionAccess(JdbcServicesImpl.java:260)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:94)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:89)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:206)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:178)
at org.hibernate.cfg.Configuration.buildTypeRegistrations(Configuration.java:1885)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1843)
at dao.BenutzerDAO.<init>(BenutzerDAO.java:45)
... 1 more
Caused by: java.lang.ClassNotFoundException: Could not load requested class : org.postgresql.Driver
at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl$AggregatedClassLoader.findClass(ClassLoaderServiceImpl.java:230)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:340)
at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:242)
... 15 more
I searched for possible solutions, but none of them worked for me:
-)Specify Classpath to jar in Manifest.mf -> Did not work
-)Place the postgresql-9.4.1208.jre6.jar in lib folder under WEB-INF -> Did not work
-)Specify hibernate.cfg.xml file in Configuration().configure(); -> Did not work
I use Glassfish 4.1 and the org.postgres.Driver.class is existing, so why is it not found?
My hibernate.cfg.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
<property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
<property name="hibernate.connection.url">jdbc:postgresql://localhost:5432/Testdb</property>
<property name="hibernate.connection.username">username</property>
<property name="hibernate.hbm2ddl.auto">create-drop</property>
<property name="hibernate.connection.password">password</property>
<mapping class="entity.Benutzer"/>
</session-factory>
</hibernate-configuration>
Method in DAO class where the exception occurs:
try {
if (sessionFactory == null) {
Configuration conf = new Configuration().configure();
StandardServiceRegistryBuilder builder
= new StandardServiceRegistryBuilder();
builder.applySettings(conf.getProperties());
sessionFactory = conf.buildSessionFactory(builder.build());
}
} catch (Throwable ex) {
throw new DBException("Could not configure Hibernate!", ex);
}
I would be very thankful for every answer.
If you are using maven or gradle.
You can add this to ur pom.xml for maven
<!-- https://mvnrepository.com/artifact/org.postgresql/postgresql -->
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>42.2.4</version>
</dependency>
And this for gradle
// https://mvnrepository.com/artifact/org.postgresql/postgresql
compile group: 'org.postgresql', name: 'postgresql', version: '42.2.4'
You were close!
You need to place your postgresql-<version>.jar directly in the lib folder of your servlet container.
For instance, if you're working with Apache Tomcat, simply drop your jar under <TOMCAT_ROOT>/lib and you should be all set.
Related
I am working with Maven, on Netbeans, on Windows
I have my full configured hibernate.cfg.xml file on
"/src/main/resources/hibernate.cfg.xml"
I have triple checked this is a fact.
This is my folder structure on Netbeans (picture)
When running I get this:
Exception in thread "main" org.hibernate.internal.util.config.ConfigurationException:
Could not locate cfg.xml resource [/resources/hibernate.cfg.xml]
This is my hibernate cfg.xml file:
<!-- This file should be referenced in the configure() method!!! -->
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<! -- url -->
<property name="hibernate.connection.url">jdbc:oracle:thin:#toshiba-pc:1521:SYSTEM</property>
<! -- username -->
<property name="hibernate.connection.username">system</property>
<!-- password -->
<property name="hibernate.connection.password">27111995</property>
<!-- database driver -->
<property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
</session-factory>
</hibernate-configuration>
And on my main class the relevant lines are these:
public static void main(String[] args) {
Configuration cfg = new Configuration();
cfg.configure("/resources/hibernate.cfg.xml");
...more code...
So basically I have been trying to get around this with no success at all. Any help would be extremely appreciated.
Finally solved it!
My solution was to create a new File object using the System.property("user.dir") method and pass it to the Configuration constructor:
String roothFolder = System.getProperty("user.dir");
File hibernateConfigFile = new File
(roothFolder + "/src/main/resources/hibernate.cfg.xml");
Configuration cfg = new Configuration();
cfg.configure(hibernateConfigFile);
I suddenly have started getting XMLStreamException in my project. Yesterday it worked just fine, today I made some minor changes and it's broken. I tried to rebase to previous versions, but nothing changed at all.
Here is my xml file:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
<property name="hibernate.connection.url">jdbc:postgresql://localhost:5433/logistica</property>
<property name="hibernate.connection.username">testUser</property>
<property name="hibernate.connection.password">pass</property>
<property name="hibernate.show_sql">true</property>
<property name="hibernate.dialect">org.hibernate.dialect.PostgreSQL9Dialect</property>
<mapping class="com.log.iei.logistica.data.entities.ClientEntity" />
<mapping class="com.log.iei.logistica.data.entities.ContractEntity" />
<mapping class="com.log.iei.logistica.data.entities.ContainerEntity" />
<mapping class="com.log.iei.logistica.data.entities.VehicleEntity" />
<mapping class="com.log.iei.logistica.data.entities.TransactionEntity" />
</session-factory>
</hibernate-configuration>
And exception:
org.hibernate.HibernateException: Error accessing stax stream
at org.hibernate.boot.cfgxml.internal.JaxbCfgProcessor.unmarshal(JaxbCfgProcessor.java:107)
at org.hibernate.boot.cfgxml.internal.JaxbCfgProcessor.unmarshal(JaxbCfgProcessor.java:65)
at org.hibernate.boot.cfgxml.internal.ConfigLoader.loadConfigXmlResource(ConfigLoader.java:57)
at org.hibernate.boot.registry.StandardServiceRegistryBuilder.configure(StandardServiceRegistryBuilder.java:165)
at org.hibernate.cfg.Configuration.configure(Configuration.java:258)
at org.hibernate.cfg.Configuration.configure(Configuration.java:244)
at com.log.iei.logistica.managers.HibernateSessionManager.getSessionFactory(HibernateSessionManager.java:18)
at com.log.iei.logistica.data.controllers.Services.GenericDao.getSession(GenericDao.java:78)
at com.log.iei.logistica.data.controllers.Services.GenericDao.findAll(GenericDao.java:58)
at com.log.iei.logistica.data.controllers.Services.VehicleService.findAll(VehicleService.java:50)
at com.log.iei.logistica.gui.cargo.CargoPage.init(CargoPage.java:27)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
.........
.......
Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[1,2]
Message: The markup declarations contained or pointed to by the document type declaration must be well-formed.
at com.sun.org.apache.xerces.internal.impl.XMLStreamReaderImpl.next(XMLStreamReaderImpl.java:604)
at com.sun.xml.internal.stream.XMLEventReaderImpl.peek(XMLEventReaderImpl.java:276)
at org.hibernate.boot.cfgxml.internal.JaxbCfgProcessor.unmarshal(JaxbCfgProcessor.java:103)
... 36 more
I began having the same issue. I hadn't updated anything, but restarting tomcat failed with lots of new exceptions. I noticed the below file was updated today and wondered if it was the source (it is referenced in each of my entity mappings):
http://hibernate.org/dtd/hibernate-mapping-3.0.dtd
So I updated my mappings to use the DTD from here:"hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" - and that works. So it does appear to be caused by the Hibernate's updated DTD file.
I guess your options are:
figure out what hibernate wants in the updated dtd
use the dtd from another source like sourceforge
use the dtd from your hibernate jar like this: "classpath://org/hibernate/hibernate-mapping-3.0.dtd"
I am trying to generate codes from my mysql server 5.7.25 using Hibernate Tool in Eclipse, I already installed jboss plugin in the marketplace, but when I create a hibernate configuration I get 'Problems while reading database schema' when I view the tables. The crazy part is in my data source explorer I can easily connect to my mysql server.
My Mysql server is 5.7.25, driver is mysql-connector-java-5.1.47-bin.jar, hibernate version is 3.5 and I am using eclipse 2019-03
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.password">1234567890</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3307/db</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQL57Dialect</property>
<property name="hibernate.default_schema">db</property>
<property name="hbm2ddl.auto">update</property>
</session-factory>
</hibernate-configuration>
when I expand the Database option in my newly created Hibernate configuration, I experience the error below:
<Reading schema error: Getting database metadata>
see fullstack error
org.jboss.tools.hibernate.runtime.spi.HibernateException: Getting database metadata
at org.hibernate.eclipse.console.workbench.LazyDatabaseSchemaWorkbenchAdapter$2.execute(LazyDatabaseSchemaWorkbenchAdapter.java:139)
at org.hibernate.console.execution.DefaultExecutionContext.execute(DefaultExecutionContext.java:63)
at org.hibernate.console.ConsoleConfiguration.execute(ConsoleConfiguration.java:107)
at org.hibernate.eclipse.console.workbench.LazyDatabaseSchemaWorkbenchAdapter.readDatabaseSchema(LazyDatabaseSchemaWorkbenchAdapter.java:124)
at org.hibernate.eclipse.console.workbench.LazyDatabaseSchemaWorkbenchAdapter.getChildren(LazyDatabaseSchemaWorkbenchAdapter.java:64)
at org.hibernate.eclipse.console.workbench.BasicWorkbenchAdapter.fetchDeferredChildren(BasicWorkbenchAdapter.java:104)
at org.eclipse.ui.progress.DeferredTreeContentManager$1.run(DeferredTreeContentManager.java:235)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost:3307/db
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at org.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionProvider.java:133)
at org.hibernate.cfg.reveng.dialect.AbstractMetaDataDialect.getConnection(AbstractMetaDataDialect.java:121)
at org.hibernate.cfg.reveng.dialect.AbstractMetaDataDialect.getMetaData(AbstractMetaDataDialect.java:60)
at org.hibernate.cfg.reveng.dialect.AbstractMetaDataDialect.caseForSearch(AbstractMetaDataDialect.java:163)
at org.hibernate.cfg.reveng.dialect.JDBCMetaDataDialect.getTables(JDBCMetaDataDialect.java:22)
at org.hibernate.cfg.reveng.JDBCReader.processTables(JDBCReader.java:476)
at org.hibernate.cfg.reveng.JDBCReader.readDatabaseSchema(JDBCReader.java:74)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.jboss.tools.hibernate.runtime.common.Util.invokeMethod(Util.java:43)
at org.jboss.tools.hibernate.runtime.common.AbstractJDBCReaderFacade.readDatabaseSchema(AbstractJDBCReaderFacade.java:44)
at org.hibernate.eclipse.console.workbench.LazyDatabaseSchemaWorkbenchAdapter$2.execute(LazyDatabaseSchemaWorkbenchAdapter.java:132)
... 7 more
I was able to solve this issue by using version 4.3 in the hibernate configuration and hibernate code generation tool. Previously, I have used version 3.5 since 5.x has a pending bug in eclipse.
I have created a sample Oracle 12c PDB (Pluggable Data Base) using the instructions from here. How do I connect to this pluggable database using Hibernate application? I am using a sample Hibernate application from here
I changed the hibernate.cfg.xml file as follows:
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="connection.url">jdbc:oracle:thin:#localhost:1521:sys</property>
<property name="connection.username">sys as sysdba</property>
<property name="connection.password">helloWORLD12</property>
<property name="connection.driver_class">oracle.jdbc.OracleDriver</property>
<property name="dialect">org.hibernate.dialect.Oracle12cDialect</property>
<property name="show_sql">true</property>
<property name="format_sql">true</property>
<property name="hbm2ddl.auto">create</property>
<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">1</property>
<property name="current_session_context_class">thread</property>
<mapping class="net.codejava.hibernate.Book" />
</session-factory>
</hibernate-configuration>
But I am getting the following error trace when I run the program:
Exception in thread "main" org.hibernate.HibernateException: Error accessing stax stream
at org.hibernate.boot.cfgxml.internal.JaxbCfgProcessor.unmarshal(JaxbCfgProcessor.java:107)
at org.hibernate.boot.cfgxml.internal.JaxbCfgProcessor.unmarshal(JaxbCfgProcessor.java:65)
at org.hibernate.boot.cfgxml.internal.ConfigLoader.loadConfigXmlResource(ConfigLoader.java:57)
at org.hibernate.boot.registry.StandardServiceRegistryBuilder.configure(StandardServiceRegistryBuilder.java:163)
at net.codejava.hibernate.BookManager.setup(BookManager.java:23)
at net.codejava.hibernate.BookManager.main(BookManager.java:100)
Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[18,6]
Message: The processing instruction target matching "[xX][mM][lL]" is not allowed.
at com.sun.org.apache.xerces.internal.impl.XMLStreamReaderImpl.next(XMLStreamReaderImpl.java:604)
at com.sun.xml.internal.stream.XMLEventReaderImpl.peek(XMLEventReaderImpl.java:276)
at org.hibernate.boot.cfgxml.internal.JaxbCfgProcessor.unmarshal(JaxbCfgProcessor.java:103)
... 5 more
Kindly let me know where I am going wrong. There are almost no resources online for using Oracle 12c PDB with Hibernate.
UPDATE 1: I had an extra line of XML code in my config file which lead to the XML parsing error. Now - how do I associate a CDB/PDB with a particular user account, since using the PDB through SYS user is not recommended.
I have a PDB named 'pdb1', and it is associated with sys user account. It is stored at the following location:
D:\app\myusername\virtual\oradata\orcl\pdb1
I created a new user 'c##test' and then created a pdb while logged in to the user 'c##test' using the following command:
create pluggable database pdb3 admin user pdb_admin3 identified by helloWORLD12
file_name_convert=('D:\app\myusername\virtual\oradata\orcl\pdbseed\',
'D:\app\myusername\virtual\oradata\test\pdb3\');
'pdb3' is created successfully, but it is not getting associated to the user 'c##test'.
The error trace I am getting now is as follows: https://pastebin.com/skVMLkqT
The issue is with the syntax you are using. you are using :SID instead of /SERVICE_NAME , so make sure to change this line as :
<property name="connection.url">jdbc:oracle:thin:#localhost:1521/sys</property>
to see which services available, execute lsnrctl service.
Please also note that you are trying to use sys account which is a the
same as root. to avoid future problems, it's best practice to create a
new account an use that instead.
according to your stack trace you missed oracle driver dependency:
ClassNotFoundException: Could not load requested class :
oracle.jdbc.OracleDriver
you should add this dependecy to your pom.xml file,Please take these steps for that:
1- Download ojdbc8.jar from oracle site:
https://www.oracle.com/technetwork/database/features/jdbc/jdbc-ucp-122-3110062.html
2- Install ojdbc8 to your local maven repository:
specify you path instead of Path/to/your/
mvn install:install-file -Dfile={Path/to/your/ojdbc8.jar} DgroupId=com.oracle -DartifactId=ojdbc8 -Dversion=12.2.0.1 -Dpackaging=jar
3-Add Dependency to Pom.xml
<!-- ORACLE database driver -->
<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc8</artifactId>
<version>12.2.0.1</version>
</dependency>
I am following Java Hibernate tutorial example from YouTube. Everything looks great until I try to run code which is supposed to create table Employee on Apache Derby server. I tried to use SQL server (2008) first and I was getting the same error.
Could not parse configuration: hibernate.cfg.xml and there is also timeout error. I appreciate any help. Thanks.
Here is the error I get:
17:28:51,574 INFO Version:15 - Hibernate Annotations 3.4.0.GA
17:28:51,587 INFO Environment:560 - Hibernate 3.3.2.GA
17:28:51,590 INFO Environment:593 - hibernate.properties not found
17:28:51,594 INFO Environment:771 - Bytecode provider name : javassist
17:28:51,597 INFO Environment:652 - using JDK 1.4 java.sql.Timestamp handling
17:28:51,648 INFO Version:14 - Hibernate Commons Annotations 3.1.0.GA
17:28:51,655 INFO Configuration:1474 - configuring from resource: hibernate.cfg.xml
17:28:51,655 INFO Configuration:1451 - Configuration resource: hibernate.cfg.xml
17:28:51,702 DEBUG DTDEntityResolver:64 - trying to resolve system-id [http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd]
Exception in thread "main" org.hibernate.HibernateException: Could not parse configuration: hibernate.cfg.xml
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1542)
at org.hibernate.cfg.AnnotationConfiguration.doConfigure(AnnotationConfiguration.java:1035)
at org.hibernate.cfg.AnnotationConfiguration.doConfigure(AnnotationConfiguration.java:64)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1476)
at org.hibernate.cfg.AnnotationConfiguration.configure(AnnotationConfiguration.java:1017)
at com.hibernate.chapter1.TestEmployee.main(TestEmployee.java:14)
Caused by: org.dom4j.DocumentException: Connection timed out: connect Nested exception: Connection timed out: connect
at org.dom4j.io.SAXReader.read(SAXReader.java:484)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1532)
... 5 more
Here is my hibernate.cfg.xml file:
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- Database connection settings -->
<property name="connection.driver_class">org.apache.derby.jdbc.ClientDriver</property>
<property name="connection.url">jdbc:derby://localhost:1527/HibernateDb;create=true</property>
<property name="connection.username">user</property>
<property name="connection.password">password</property>
<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">2</property>
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.DerbyDialect</property>
<!-- Enable Hibernate's current session context -->
<property name="current_session_context_class">thread</property>
<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
<!-- Echo all executed SQL to stdout -->
<property name="show_sql">true</property>
<!-- Drop and re-create the database schema on startup -->
<property name="hbm2ddl.auto">create</property>
</session-factory>
</hibernate-configuration>
And, here is the code I am running:
package com.hibernate.chapter1;
import org.hibernate.cfg.AnnotationConfiguration;
import org.hibernate.tool.hbm2ddl.SchemaExport;
public class TestEmployee {
public static void main(String[] args) {
AnnotationConfiguration config = new AnnotationConfiguration();
config.addAnnotatedClass(Employee.class);
config.configure("hibernate.cfg.xml");
new SchemaExport(config).create(true, true);
}
}
What did I do wrong?
This means the hibernate.dtd cannot be resolved - its resolution is attempted on the server. The dtd is contained in the jars files - see here and here for how to resolve it.