Connexion avec MySQL

**sozie93** · 28/06/2012, 15h53

Bonjour,
J'ai commencé depuis hier à créer un programme en Groovy comme vous pouvez donc le comprendre je suis débutant

.

1) Voila je vous explique tout d'abord de que j'ai fait :
J'utilise SpringSource Tool.

Par défaut, Grails se branche sur une base de données HSQLDB.
Or je préfère utiliser MySQL.

Pour me connecter à mon MySQL via Grails j'ai donc dans le fichier DataSource.groovy modifié :

Code :

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dataSource {
    pooled = true
    driverClassName = "org.mysql.Driver" <--- Ici car j'utilise mysql
    username = "root" <--- Ici mon nom d'utilisateur
    password = "confidentiel" <--- Mon code
}
(...)
dataSource {
            dbCreate = "update" // one of 'create', 'create-drop', 'update', 'validate', '' <--- Update pour que la base de donnée se mette a jour automatiquement
            url = "jdbc:mysql:///sql5/mabase:3306" <--- L'url de mon mysql ( je penses :?)
        }

De plus j'ai mis le .jar : mysql-connector-java-5.1.11-bin.jar dans le lib de mon projet car j'utilise la version 5.1.11 de MySQL.

2) Maintenant voici le message d'erreur que j'obtient :

Message: Error creating bean with name 'transactionManagerPostProcessor': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory': Cannot resolve reference to bean 'hibernateProperties' while setting bean property 'hibernateProperties'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hibernateProperties': Cannot resolve reference to bean 'dialectDetector' while setting bean property 'properties' with key [hibernate.dialect]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dialectDetector': Invocation of init method failed; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'org.mysql.Driver'

<---- En raccourci car j'ai ce message sur environ 3 pages. Je penses que c'est ici que ca bug.Est ce que quelqu'un pourrait me venir en aide s'il vous plait?

**Nesmontou** · 28/06/2012, 16h44

Bonjour,

Le driver à utiliser est com.mysql.jdbc.Driver ?

Cf. doc officielle : http://dev.mysql.com/doc/refman/5.1/...roperties.html

**sozie93** · 28/06/2012, 17h47

Effectivement, entre temps j'ai modifié, mais j'ai toujours le même message d'erreur.
J'ai trouvé pas mal de tutorat qui me dise de modifier le fichier DataSource.groovy et tous de cette manière :
[

Code :

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dataSource {
   pooled = true
    driverClassName = "org.mysql.jdbc.Driver"
	username = "root"
	password="sopra123"
}
 
hibernate {
    cache.use_second_level_cache = true
    cache.use_query_cache = true
    cache.region.factory_class = 'net.sf.ehcache.hibernate.EhCacheProvider'
}
// environment specific settings
environments {
    development {
        dataSource {
            dbCreate = "update" // one of 'create', 'create-drop', 'update', 'validate', ''
            url = "jdbc:mysql://localhost:3306/foot_dev"
			show_sql=true
        }
    }
    test {
        dataSource {
            dbCreate = "update"
			url = "jdbc:mysql://localhost:3306/foot_test"
        }
    }
	production {
		dataSource {
			dbCreate = "update"
			url = "jdbc:mysql://localhost:3306/foot"
		}
	}
}

Je suis exactement ce que me dit le tutorat et pourtant j'ai toujours et encore la même erreur...

voila grosso toute l'erreur :

Code :

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 Error 2012-06-28 17:26:40,184 [pool-7-thread-1] ERROR context.GrailsContextLoader  - Error executing bootstraps: Error creating bean with name 'transactionManagerPostProcessor': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory': Cannot resolve reference to bean 'hibernateProperties' while setting bean property 'hibernateProperties'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hibernateProperties': Cannot resolve reference to bean 'dialectDetector' while setting bean property 'properties' with key [hibernate.dialect]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dialectDetector': Invocation of init method failed; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'org.mysql.jdbc.Driver'
Message: Error creating bean with name 'transactionManagerPostProcessor': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory': Cannot resolve reference to bean 'hibernateProperties' while setting bean property 'hibernateProperties'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hibernateProperties': Cannot resolve reference to bean 'dialectDetector' while setting bean property 'properties' with key [hibernate.dialect]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dialectDetector': Invocation of init method failed; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'org.mysql.jdbc.Driver'
    Line | Method
->>  334 | innerRun  in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|    166 | run       in java.util.concurrent.FutureTask
|   1110 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    603 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run . . . in java.lang.Thread
Caused by BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory': Cannot resolve reference to bean 'hibernateProperties' while setting bean property 'hibernateProperties'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hibernateProperties': Cannot resolve reference to bean 'dialectDetector' while setting bean property 'properties' with key [hibernate.dialect]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dialectDetector': Invocation of init method failed; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'org.mysql.jdbc.Driver'
->>  334 | innerRun  in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|    166 | run       in java.util.concurrent.FutureTask
|   1110 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    603 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run . . . in java.lang.Thread
Caused by BeanCreationException: Error creating bean with name 'sessionFactory': Cannot resolve reference to bean 'hibernateProperties' while setting bean property 'hibernateProperties'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hibernateProperties': Cannot resolve reference to bean 'dialectDetector' while setting bean property 'properties' with key [hibernate.dialect]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dialectDetector': Invocation of init method failed; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'org.mysql.jdbc.Driver'
->>  334 | innerRun  in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|    166 | run       in java.util.concurrent.FutureTask
|   1110 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    603 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run . . . in java.lang.Thread
Caused by BeanCreationException: Error creating bean with name 'hibernateProperties': Cannot resolve reference to bean 'dialectDetector' while setting bean property 'properties' with key [hibernate.dialect]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dialectDetector': Invocation of init method failed; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'org.mysql.jdbc.Driver'
->>  334 | innerRun  in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|    166 | run       in java.util.concurrent.FutureTask
|   1110 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    603 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run . . . in java.lang.Thread
Caused by BeanCreationException: Error creating bean with name 'dialectDetector': Invocation of init method failed; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'org.mysql.jdbc.Driver'
->>  334 | innerRun  in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|    166 | run       in java.util.concurrent.FutureTask
|   1110 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    603 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run . . . in java.lang.Thread
Caused by MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'org.mysql.jdbc.Driver'
->>  334 | innerRun  in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|    166 | run       in java.util.concurrent.FutureTask
|   1110 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    603 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run . . . in java.lang.Thread
Caused by SQLNestedException: Cannot load JDBC driver class 'org.mysql.jdbc.Driver'
->> 1429 | createConnectionFactory in org.apache.commons.dbcp.BasicDataSource
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   1371 | createDataSource in     ''
|   1044 | getConnection in     ''
|    334 | innerRun  in java.util.concurrent.FutureTask$Sync
|    166 | run . . . in java.util.concurrent.FutureTask
|   1110 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    603 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run       in java.lang.Thread
Caused by ClassNotFoundException: org.mysql.jdbc.Driver
->>  366 | run       in java.net.URLClassLoader$1
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|    355 | run       in     ''
|    354 | findClass in java.net.URLClassLoader
|    423 | loadClass in java.lang.ClassLoader
|    356 | loadClass in     ''
|   1420 | createConnectionFactory in org.apache.commons.dbcp.BasicDataSource
|   1371 | createDataSource in     ''
|   1044 | getConnection in     ''
|    334 | innerRun  in java.util.concurrent.FutureTask$Sync
|    166 | run       in java.util.concurrent.FutureTask
|   1110 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    603 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run . . . in java.lang.Thread

**Nesmontou** · 29/06/2012, 08h06

Le fichier mysql-connector-java-5.1.11-bin.jar est-il bien pris en compte dans le classpath ?

Il ne suffit peut-être pas de le mettre dans le répertoire lib ? Une configuration supplémentaire est peut-être nécessaire.

**sozie93** · 29/06/2012, 10h11

J'avais éffectivement déjà mis le mysql-connector-java-5.1.11-bin.jar dans le classpath... Je n'arrives toujours pas à résoudre mon problème

**sozie93** · 29/06/2012, 10h12

Je vous tiendrais au courant si j'arrive à résoudre mon problème.
J'ai aussi essayer avec deux autres version différentes du connecteur sans grand succès.

**sozie93** · 29/06/2012, 11h33

j'ai une bonne nouvelle, j'ai résolution le problème en réalité dans le fichier :
DataSourcee.groovy il ne fallait pas mettre :
driverClassName="org.mysql.jdbc.Driver"
mais
driverClassName="com.mysql.jdbc.Driver"
car dans le mysql-connector-java-5.1.18-bin.jar , il n'y avait pas de lien org.mysql.jdbc.Driver
Je ne sais pas si j'ai été claire dans mon explication en tout cas cela reste un grand mystère pour moi

J'ai maintenant un nouveau soucis mais je vais essayer de me débrouiller par mes propres moyens merci beaucoup et bon courage...