Preconfigured netbeans project with hibernate NoSuchMethodError and spring conflict

Question

so I try to connect my Java application to SQL Server 2012 through Microsoft JDBC Driver 4.0 for SQL Server , and it seems that everything is going fine, but hibernate just returns with NullExceptions and does not do anything in try/catch (hence NullException ), I absolutely have no idea why. Here is the pastebin from the netbeans console ( e.getMessage() ) on which hibernation mode is running (for the purpose of this question, I am using an example table called prime_table ).

In the insert log you will notice ...

Feb 11, 2013 5:21:04 PM org.hibernate.cfg.Configuration doConfigure INFO: Configured SessionFactory: null

any ideas on why this is happening? (I'm not sure, but this may have to do with the overall stack trace).

Other logs (during JSP build)

• Netbeans (run)
• Apache cat
• Apache Tomcat Magazine
• Sql server ERRORLOG.log
• Hibernate dropable stack trace (02/14/2013 update)

All magazines will be available until mid / end of March 2013

Resources I read

• Hibernation example
• [Help] Null pointer exception in session.flush () Hibernate
• hibernate.cfg.xml not found
• Hibernate Java Map Long MySQL BIGINT Error

commandline: tree /f NetBeans project configuration commandline: tree /f

_{(source: iforce.co.nz )}

Hibernate.cfg.xml (added "hibernate.cache.provider_class" as proposed by Hari )

 <?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="hibernate.cache.provider_class">org.hibernate.cache.HashtableCacheProvider</property> <property name="hibernate.connection.driver_class">com.microsoft.sqlserver.jdbc.SQLServerDriver</property> <property name="hibernate.connection.url">jdbc:sqlserver://Michael-PC:1433;databaseName=PrimeDB</property> <property name="hibernate.connection.username">sa</property> <property name="hibernate.connection.password">online12</property> <property name="hibernate.connection.pool_size">10</property> <property name="hibernate.dialect">org.hibernate.dialect.SQLServerDialect</property> <property name="hibernate.show_sql">true</property> <property name="hibernate.hbm2ddl.auto">update</property> <!-- Data Mappings --> <mapping resource="prime.hbm.xml"/> </session-factory> </hibernate-configuration> 

Prime

 public class Prime { private long prime; public void setPrime(long nPrime){ this.prime = nPrime; } public long getPrime(){ return this.prime; } } 

prime.hbm.xml

 <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping> <class name="nz.co.xyleap.db.Prime" table="prime_table"> <id name="prime" type="long" column="prime" /> </class> </hibernate-mapping> 

Main table

 CREATE TABLE prime_table ( [prime] bigint PRIMARY KEY NOT NULL, ) 

Session Function or FirstExample.java

 public class FirstExample { public static void main(String[] args) { FirstExample ex = new FirstExample(); ex.session(); } public void session() { Session session = null; try { // This step will read hibernate.cfg.xml and prepare hibernate for use SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory(); session = sessionFactory.openSession(); session.beginTransaction(); //Create new instance of Contact and set values in it by reading them from form object System.out.println("inserting record 13"); Prime p = new Prime(); p.setPrime(13); session.save(p); System.out.println("Done"); } catch (Exception e) { System.out.println(e.getMessage()); } finally { // Actual contact insertion will happen at this step session.flush(); session.close(); } } } 

As far as I know, everything should be correct, and I should be able to insert records from Java Hibernate into my SQL database. But for some reason I can not: - /

UPDATE: Hibernate itself, works fine. But in combination with Spring, these errors occur. (More in the comments).

Answer 1

It looks like you are missing the library that Hibernate needs at runtime. I saw the same behavior as you with your code (MySQL 5, MySQL JDBC driver, Mac OS) until I changed the line:

 catch (Exception e) { System.out.println(e.getMessage()); } 

To:

 catch (Throwable e) { e.printStackTrace(); } 

Then I started to see a whole set of messages NoClassDefFoundError and ClassNotFoundError about libraries that Hibernate was looking for, but was not included in my CLASSPATH. I suspect you are missing a library that needs Hibernate, and because you are catching an Exception , not Throwable - which is catching Error - you are not seeing an error message. Cm:

Why catch Exceptions in Java when you can catch Throwables?

If you catch Throwable , you will see pretty quickly which libraries and classes you are missing: I assume that you are probably missing EHCache (which Hibernate is apparently used as the default second level cache), CGLIB / ASM or Java Transaction API If you are missing EHCache and want hibernation to use its own Hashtable cache in memory instead of EHCache, add the line below to hibernate.cfg.xml :

 <property name="hibernate.cache.provider_class">org.hibernate.cache.HashtableCacheProvider</property> 

Comment based update for reply:

I do not use NetBeans, and therefore I have not encountered this problem, but it is quite common. Cm:

Error: java.lang.NoSuchMethodError: org.objectweb.asm.ClassWriter. <init> (I) V

http://www.hildeberto.com/2008/05/hibernate-and-jersey-conflict-on.html (Report a similar problem with Hibernate and Jersey in Netbeans)

https://hibernate.onjira.com/browse/HHH-2222 (Hibernate error message mentioning this problem)

http://netbeans.org/bugzilla/show_bug.cgi?id=145589 (Netbeans error report for linked sleep mode using older versions of cglib).

The StackOverflow post related to above has quite a few details. Summarizing:

• Hibernate 3.2 uses CGLib 2.1.3 to generate code at runtime, to improve performance, and to create proxies for one-to-one and one-to-many comparisons.

• CGLib is a higher-level shell around ASM, a bytecode manipulation library. CGLib 2.1.3 requires ASM 1.5.3, which is binary incompatible with ASM 2.2. ASM 2.2, in turn, is a dependency for versions of Spring 2.5.

• To solve these problems between Hibernate and Spring, Spring 2.5 associates its own version of asm with the name of the Spring package; later versions of Hibernate use CGLIB 2.2, which also associates its own version of ASM with a custom package name. The most recent versions of Hibernate completely eliminate CGLIB and use Javassist instead, but NetBeans still bundles Hibernate 3.2.5.

You have several options, and then:

• Update Hibernate Library Package on Netbeans with CGLIB 2.2

• Tell Hibernate to use Javassist to generate runtime code. Add this line to hibernate.properties or specify it as a system property using -D (you cannot specify this property in the hibernate.cfg.xml file, apparently):

  hibernate.bytecode.provider=javassist

Good luck, that was a pretty interesting question!

Answer 2

He dies on session.flush (); because the session is null and something in the try block throws an exception, maybe it is a runtimeexception like nullpointer or something like that. The fact that the session is null will call another nullptr and it will hide the original one. So I suggest you do it

 if(session!=null) { session.flush(); session.close(); } 

and then run it to see what the actual problem is.

I also suggest replacing "System.out.println (e.getMessage ()); with the smallest value e.printStackTrace (); or preferably proper logging.