Grails의 오류 연결하는 동안 MySQL의

Question

내가 내 응용 프로그램에 lib 폴더에 MySQL의 커넥터 - 자바-5.1.22-bin.jar를 복사 한

MySQL로 연결하는 동안 오류가 다음 얻고있다

| Error 2012-11-26 16:14:16,981 [localhost-startStop-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 '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 
^ 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 '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 
^ 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 '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 
^ 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 '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 
^ 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 '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 
^ 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 '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 
^ 722 | 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 
^ 722 | run  in java.lang.Thread 

Caused by ClassNotFoundException: com.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 

Answer 1

jar 파일을 Maven 저장소에서 사용할 수있을 때 jar 파일을 lib 디렉토리에 복사하면 안됩니다. 한 번 다운로드하여 각 프로젝트에 하나씩 여러 사본을 저장하는 대신 캐시하는 것이 좋습니다. 사실 MySQL 드라이버는 생성 된 BuildConfig.groovy에서 사용하는 예제입니다. 그냥 주석을 해제하고 버전 업데이트 : 당신은 메이븐의 repo에없는 jar 파일이있는 경우

dependencies { 
    runtime 'mysql:mysql-connector-java:5.1.22' 
} 

, 당신의 lib 디렉토리에 넣어합니다. 그러나 Grails는 자동으로 발견하지 않으므로 실행해야합니다. grails compile --refresh-dependencies