Wie man MySQL auf Grails 2.0 arbeiten lässt

Grails 2.0, zu haben scheint einige änderungen zu DataSource.groovy und ich bin anscheinend nicht in der Lage sein, um mysql laufen, wie in 1.3.7

Habe ich grails install-dependency mysql:mysql-connector-java:5.1.16 anstatt nur dumping die .jar im lib. Ich höre, ist dies der Weg, es zu tun in diesen Tagen.

Hier ist, was ich verdrängt habe in meinem DataSource.groovy:

driverClassName = "org.h2.Driver"
...
url = "jdbc:h2:mem:devDb;MVCC=TRUE"

Mit

driverClassName = "com.mysql.jdbc.Driver"
...
url = "jdbc:mysql://localhost:3306/${dbNamer}?autoreconnect=true"

Verändert natürlich den Benutzernamen, das Passwort und dbNamer gültigen Eintragungen... Was mache ich falsch? Gibt es eine grails 2.0-tutorial, das erklärt die Einrichtung von mysql?

Bekomme ich diesen monster Fehler:

| Loading Grails 2.0.0
| Configuring classpath.
| Environment set to development.....
| Packaging Grails application.....
| Compiling 1 source files.....
| Running Grails application
| Error 2012-01-16 21:39:10,134 [Thread-9] 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 'com.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 'com.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
^    679 | 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 'com.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
^    679 | 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 'com.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
^    679 | 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 'com.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
^    679 | 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 'com.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
^    679 | 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 'com.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
^    679 | run . . . in java.lang.Thread
Caused by SQLNestedException: Cannot load JDBC driver class 'com.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
^    679 | run       in java.lang.Thread
Caused by ClassNotFoundException: com.mysql.jdbc.Driver
->>  217 | run       in java.net.URLClassLoader$1
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|    205 | findClass in java.net.URLClassLoader
|    321 | loadClass in java.lang.ClassLoader
|    266 | loadClass in     ''
|   1420 | createConnectionFactory in org.apache.commons.dbcp.BasicDataSource
|   1371 | createDataSource in     ''
|   1044 | getConnection in     ''
|    334 | innerRun  in java.util.concurrent.FutureTask$Sync
|    166 | run . . . in java.util.concurrent.FutureTask
|   1110 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    603 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    679 | run       in java.lang.Thread

InformationsquelleAutor der Frage Mikey | 2012-01-17

21

install-dependency nur downloads das Glas und legt es in Ihrem Efeu-cache. Aber Sie haben nicht erklärt, dass Ihre Anwendung hat eine Abhängigkeit auf das Glas. BuildConfig.groovy hat eine auskommentierte Abhängigkeit Erklärung für die MySQL-Treiber. Einfach kommentieren Sie, und aktualisieren Sie die version, wenn Sie wollen, und fügen es zu Ihrer Anwendung classpath. Es würde auch herunterladen, das jar in Ihr Efeu-cache, wenn Sie nicht gemacht hätten, mit install-dependency.

InformationsquelleAutor der Antwort Burt Beckwith
12

Ich habe gerade ein grails - >rein und es funktionierte

InformationsquelleAutor der Antwort gvo

Landete ich das schreiben eines groovy-Skript, das testet Verbindung zu MySQL. Der code folgt. Legen Sie es in scripts/TestMysql.groovy und ausführen, z.B. als

grails test test-mysql localhost 3306 test-db grails-user grails-password

Den ersten "test", um das Skript auszuführen in der Testumgebung, im Fall es irgendwelche änderungen in der Datenquelle.groovig.

Können Sie eine Verbindung zu MySQL mit diesem script, zumindest werden Sie wissen, die richtigen Einstellungen für Ihre DataSource.groovig. Im Falle des Erfolgs es gibt auch die relevanten dataSource {} Abschnitt eingefügt werden, in DataSource.groovy.

/* Testing grails/GORM connection to mysql
 * Call this script "scripts/TestMysql.groovy"
 * Usage: "grails test-mysql" or, to run in another environment, e.g. "grails test test-mysql"
 * (This is in case you have changed DataSource.groovy and nothing is working.)
 *
 * Up to five parameters:
 * grails test test-mysql <host> <port> <database> <user> <password>
 * e.g. grails test test-mysql localhost 3306 test root rootpassword.
 * The database name can also be empty.
 */

import groovy.sql.Sql

includeTargets << grailsScript("_GrailsInit") << grailsScript("_GrailsArgParsing")

target(main: "The description of the script goes here!") {

    def list=argsMap['params']
    def host=list[0] ? list[0] : 'localhost'  
    def port=list[1] ? list[1] : '3306'       
    def db=list[2] ? list[2] : ''             // can leave empty
    def user=list[3] ? list[3] : 'grails'      
    def pswd=list[4] ? list[4] : 'grails'

    println "Connecting to " + host + ":" + port
    println "Database:" + db
    println "User: " + user
    println "Password: " + pswd

    def jdbc_string='jdbc:mysql://' + host + ':' + port + '/' + db

    def sql
    try {
        sql = Sql.newInstance(jdbc_string, user, pswd, "com.mysql.jdbc.Driver")
    } catch (com.mysql.jdbc.exceptions.jdbc4.CommunicationsException e) {
        println "ERROR! Cannot connect to " + host + ":" + port
        println "Check host, port, your open ports and other firewall settings; try to connect with some other program"
        println ""
        println e
        return
    } catch (com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException e) {
        println "MySQL ERROR, perhaps wrong database name!"
        println ""
        println e
        return
    } catch (java.sql.SQLException e) {
        println "MySQL ERROR, perhaps wrong login/password!"
        println ""
        println e
        return
    }

    println "SUCCESS! Connected to MySQL"
    def query = "SHOW DATABASES"

    println "Executing query " + query + "..."
    sql.eachRow(query) {
      println it
    }

    println "OK, Done!"

    println """
        dataSource {
            dbCreate = "create-drop" //one of 'create', 'create-drop', 'update', 'validate', ''
            url = "jdbc:mysql://${host}:${port}/${db}"
            username="${user}"
            password="${pswd}"
        }
        """

}

setDefaultTarget(main)

Update: in der Tat, wenn dieses Skript funktioniert, es war einfach zu machen Grails Arbeit als gut. Ich hatte gerade zu tun grails clean löschen Sie alle *.class Dateien, die überlebt haben, wieder die ursprüngliche DataSource.groovyund dann grails compile --refresh-dependencies. Dann ändern DataSource.groovyund es funktioniert wie ein Charme.

Hier ist meine Arbeit DataSource.groovy:

dataSource {
    pooled = true
    driverClassName = "com.mysql.jdbc.Driver"
    username = "sa"
    password = ""
}
hibernate {
    cache.use_second_level_cache = true
    cache.use_query_cache = false
    cache.region.factory_class = 'net.sf.ehcache.hibernate.EhCacheRegionFactory'
}
// environment specific settings
environments {
    development {
        dataSource {
            dbCreate = "create-drop" // one of 'create', 'create-drop', 'update', 'validate', ''
            url = "jdbc:mysql://localhost:8890/test"
            username="grails"
            password="grails"
        }
    }
    test {
        dataSource {
            dbCreate = "update"
            url = "jdbc:h2:mem:testDb;MVCC=TRUE;LOCK_TIMEOUT=10000"
        }
    }
    production {
        dataSource {
            dbCreate = "update"
            url = "jdbc:h2:prodDb;MVCC=TRUE;LOCK_TIMEOUT=10000"
            pooled = true
            properties {
               maxActive = -1
               minEvictableIdleTimeMillis=1800000
               timeBetweenEvictionRunsMillis=1800000
               numTestsPerEvictionRun=3
               testOnBorrow=true
               testWhileIdle=true
               testOnReturn=true
               validationQuery="SELECT 1"
            }
        }
    }
}

InformationsquelleAutor der Antwort osa

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