Hi

I try to use hibernate, but I always get following error (some error with the DTD sheme) when I try to configure hibernate:

Configuration cfg = new Configuration().configure ("/resources/hibernate.cfg.xml");

->
0 [main] INFO net.sf.hibernate.cfg.Environment - Hibernate 2.1.1
0 [main] INFO net.sf.hibernate.cfg.Environment - hibernate.properties not found
0 [main] INFO net.sf.hibernate.cfg.Environment - using CGLIB reflection optimizer
15 [main] INFO net.sf.hibernate.cfg.Configuration - configuring from resource: /resources/hibernate.cfg.xml
15 [main] INFO net.sf.hibernate.cfg.Configuration - Configuration resource: /resources/hibernate.cfg.xml
78 [main] DEBUG net.sf.hibernate.util.DTDEntityResolver - trying to locate http://hibernate.sourceforge.net/hibern ... on-2.0.dtd in classpath under net/sf/hibernate/
net.sf.hibernate.HibernateException: problem parsing configuration/resources/hibernate.cfg.xml
at net.sf.hibernate.cfg.Configuration.doConfigure(Configuration.java:906)
at net.sf.hibernate.cfg.Configuration.configure(Configuration.java:845)
at ch.ejpd.jdbkof.client.testClient.<init>(testClient.java:56)
at ch.ejpd.jdbkof.client.testClient.main(testClient.java:85)
Caused by: org.dom4j.DocumentException: Error on line 3 of document : java.lang.NullPointerException Nested exception: java.lang.NullPointerException
at org.dom4j.io.SAXReader.read(SAXReader.java:355)
at net.sf.hibernate.cfg.Configuration.doConfigure(Configuration.java:901)
... 3 more
78 [main] ERROR net.sf.hibernate.cfg.Configuration - problem parsing configuration/resources/hibernate.cfg.xml
org.dom4j.DocumentException: Error on line 3 of document : java.lang.NullPointerException Nested exception: java.lang.NullPointerException
at org.dom4j.io.SAXReader.read(SAXReader.java:355)
at net.sf.hibernate.cfg.Configuration.doConfigure(Configuration.java:901)
at net.sf.hibernate.cfg.Configuration.configure(Configuration.java:845)
at ch.ejpd.jdbkof.client.testClient.<init>(testClient.java:56)
at ch.ejpd.jdbkof.client.testClient.main(testClient.java:85)
Nested exception:
java.lang.NullPointerException
at org.apache.crimson.parser.Parser2.parseInternal(Parser2.java:658)
at org.apache.crimson.parser.Parser2.parse(Parser2.java:333)
at org.apache.crimson.parser.XMLReaderImpl.parse(XMLReaderImpl.java:448)
at org.dom4j.io.SAXReader.read(SAXReader.java:339)
at net.sf.hibernate.cfg.Configuration.doConfigure(Configuration.java:901)
at net.sf.hibernate.cfg.Configuration.configure(Configuration.java:845)
at ch.ejpd.jdbkof.client.testClient.<init>(testClient.java:56)
at ch.ejpd.jdbkof.client.testClient.main(testClient.java:85)

My config doc:

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN" "http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd">

<hibernate-configuration>
<session-factory>

<!--Mapping files -->
<mapping resource="DTOSystemInfo.hbm.xml"/>
</session-factory>
</hibernate-configuration>

Whats wrong ... (I am using jdk 1.4.2_02 with eclipse, hibernate 2.1.3)

Thanks very much

Hum, okay the cfg-file doesn't contain any erros, it seems to lie
somewhere else, but till yet I can't tell you where.

Ok, at a rough guess:

you don't need to configure the hibernate.cfg.xml file - that is, no need to do:

Configuration cfg = new Configuration().configure ("/resources/hibernate.cfg.xml");

Instead, you might want to do this:

Configuration cfg = new Configuration().configure ("package-it-is-in.DTOSystemInfo.hbm.xml");
And then

SessionFatory sf = cfg.buildSessionFactory();

Which I assume is what you are trying to do - build a session factory.

ANYWAY, you'll want to make sure that your files are in the proper places (which is hard to tell you seeing as I don't know what server are using etc).

By the way, you'll want to make sure that the DTOSystemInfo.hbm.xml is in a folder that is in your classpath (ie a package).

Uh, you might also want to add some configuration details to your hibernate.cfg.xml file -> such as shown in the hibernate manual, page 18.

Hi thanks for your answer

Unfortunaltely it dosen't help: If I make something like

Configuration cfg = new Configuration().configure("/SysInfo.hbm.xml");

I get the same Exception. I think there is someting wrong with the parsing (DTD Sheme ?)

running
0 [main] INFO net.sf.hibernate.cfg.Environment - Hibernate 2.1.3
32 [main] INFO net.sf.hibernate.cfg.Environment - loaded properties from resource hibernate.properties: {hibernate.connection.driver_class=com.mysql.jdbc.Driver, hibernate.cglib.use_reflection_optimizer=true, hibernate.cache.provider_class=net.sf.ehcache.hibernate.Provider, hibernate.cache.use_query_cache=true, hibernate.max_fetch_depth=1, hibernate.dialect=net.sf.hibernate.dialect.MySQLDialect, hibernate.jdbc.use_streams_for_binary=true, hibernate.jdbc.batch_size=0, hibernate.query.substitutions=true 1, false 0, yes 'Y', no 'N', hibernate.proxool.pool_alias=pool1, hibernate.connection.username=root, hibernate.hbm2ddl.auto=create, hibernate.connection.url=jdbc:mysql://localhost/jdbkof, hibernate.show_sql=true, hibernate.connection.password=password, hibernate.connection.pool_size=5}
32 [main] INFO net.sf.hibernate.cfg.Environment - using java.io streams to persist binary types
32 [main] INFO net.sf.hibernate.cfg.Environment - using CGLIB reflection optimizer
47 [main] INFO net.sf.hibernate.cfg.Configuration - configuring from resource: /SysInfo.hbm.xml
47 [main] INFO net.sf.hibernate.cfg.Configuration - Configuration resource: /SysInfo.hbm.xml
110 [main] DEBUG net.sf.hibernate.util.DTDEntityResolver - trying to locate http://hibernate.sourceforge.net/hibern ... ng-2.0.dtd in classpath under net/sf/hibernate/
125 [main] ERROR net.sf.hibernate.cfg.Configuration - problem parsing configuration/SysInfo.hbm.xml
org.dom4j.DocumentException: Error on line 4 of document : java.lang.NullPointerException Nested exception: java.lang.NullPointerException
at org.dom4j.io.SAXReader.read(SAXReader.java:355)
at net.sf.hibernate.cfg.Configuration.doConfigure(Configuration.java:930)
at net.sf.hibernate.cfg.Configuration.configure(Configuration.java:874)
at demo.DemoMain.<init>(DemoMain.java:30)
at demo.DemoMain.main(DemoMain.java:39)
Nested exception:
java.lang.NullPointerException
at org.apache.crimson.parser.Parser2.parseInternal(Unknown Source)
at org.apache.crimson.parser.Parser2.parse(Unknown Source)
at org.apache.crimson.parser.XMLReaderImpl.parse(Unknown Source)
at org.dom4j.io.SAXReader.read(SAXReader.java:339)
at net.sf.hibernate.cfg.Configuration.doConfigure(Configuration.java:930)
at net.sf.hibernate.cfg.Configuration.configure(Configuration.java:874)
at demo.DemoMain.<init>(DemoMain.java:30)
at demo.DemoMain.main(DemoMain.java:39)
net.sf.hibernate.HibernateException: problem parsing configuration/SysInfo.hbm.xml
at net.sf.hibernate.cfg.Configuration.doConfigure(Configuration.java:935)
at net.sf.hibernate.cfg.Configuration.configure(Configuration.java:874)
at demo.DemoMain.<init>(DemoMain.java:30)
at demo.DemoMain.main(DemoMain.java:39)
Caused by: org.dom4j.DocumentException: Error on line 4 of document : java.lang.NullPointerException Nested exception: java.lang.NullPointerException
at org.dom4j.io.SAXReader.read(SAXReader.java:355)
at net.sf.hibernate.cfg.Configuration.doConfigure(Configuration.java:930)
... 3 more

Ok, so you test this:
Configuration cfg = new Configuration().configure("/SysInfo.hbm.xml");

And in the errors, you get this error:
...
125 [main] ERROR net.sf.hibernate.cfg.Configuration - problem parsing configuration/SysInfo.hbm.xml
...

Which indicates that it can't seem to parse these files. Does SysInfo.hbm.xml exist? I'd assume so - but is it in a package?

that is, if your directory structure is:
C:\hibernateStuff\test1\SysInfo.hbm.xml

Then is
C:\hibernateStuff\ in your classpath?
And if it is, then see if
Configuration cfg = new Configuration().configure("test1.SysInfo.hbm.xml");
works - you'll want to make sure that there is an accompanying SysInfo.java POJO that is marked as package test1 and is in the
C:\hibernateStuff\test1\ directory.

And of course, you'll want to make sure that the hbm.xml file correctly maps the data in the pojo to the database.

Hi

It seem everything is OK. I think that must be am problem with following line in the xml-File

<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN" "http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd">

the parser can't find the http://hibernate.sourceforge.net/hibern ... on-2.0.dtd. If I chekc the file with the xmlspy, everything works fine!

The xml-parser find all documents. If I put some garbage in front of the file, the parser stopps there.

I don't have any idea what's wrong.

I try to debugg ...

Thanks

Show your mapping file SysInfo.hbm.xml

Here is my mapping file

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"file:///D://Projekte//JDBKof//Prototypen//hibernate//bin//hibernate-mapping-2.0.dtd">
<hibernate-mapping package="org.hibernate.admin.model">
<class name="demo.SystemInfo" table="systeminfo">
<id name="id" column="id" type="int">
<generator class="increment"/>
</id>
<property name="topic" type="timestamp" column="topic"/>
<property name="message" type="string" column="message"/>
</class>
</hibernate-mapping>

I replaced http://hibernate.sourceforge.net/hibern ... on-2.0.dtd with file:///D://Projekte//JDBKof//Prototypen//hibernate//bin//hibernate-mapping-2.0.dtd then the parsinf work.
Unfortunately I got a ExceptionInInitializerError with the cache provider:

1015 [main] INFO net.sf.hibernate.cfg.Configuration - instantiating and configuring caches
java.lang.ExceptionInInitializerError
at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:739)
at demo.DemoMain.<init>(DemoMain.java:33)
at demo.DemoMain.main(DemoMain.java:40)
Caused by: java.lang.IllegalStateException: Cannot determine classloader
at net.sf.cglib.core.AbstractClassGenerator.getClassLoader(AbstractClassGenerator.java:165)
at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:176)
at net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:177)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:149)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:142)
at net.sf.hibernate.impl.SessionFactoryImpl.<clinit>(SessionFactoryImpl.java:235)

Any idea?

Thank you very much