將Grails連接到DB2數據庫

Question

我試圖將我的grails應用程序連接到本地運行的DB2數據庫。當我想啓動我的應用程序時，我得到多個錯誤？我只着手Grails，甚至更多地介紹DB2數據庫管理。有人可以幫我嗎 ？

這裏的誤差落後

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 create JDBC driver of class 'org.h2.Driver' for connect URL 'jdbc:db2://localhost:50000/DTH3_E:currentSchema=DFP_V115' 
    Line | Method 
->> 303 | innerRun in java.util.concurrent.FutureTask$Sync 
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
| 138 | run  in java.util.concurrent.FutureTask 
| 886 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker 
| 908 | run  in  '' 
^ 662 | 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 create JDBC driver of class 'org.h2.Driver' for connect URL 'jdbc:db2://localhost:50000/DTH3_E:currentSchema=DFP_V115' 
->> 303 | innerRun in java.util.concurrent.FutureTask$Sync 
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
| 138 | run  in java.util.concurrent.FutureTask 
| 886 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker 
| 908 | run  in  '' 
^ 662 | 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 create JDBC driver of class 'org.h2.Driver' for connect URL 'jdbc:db2://localhost:50000/DTH3_E:currentSchema=DFP_V115' 
->> 303 | innerRun in java.util.concurrent.FutureTask$Sync 
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
| 138 | run  in java.util.concurrent.FutureTask 
| 886 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker 
| 908 | run  in  '' 
^ 662 | 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 create JDBC driver of class 'org.h2.Driver' for connect URL 'jdbc:db2://localhost:50000/DTH3_E:currentSchema=DFP_V115' 
->> 303 | innerRun in java.util.concurrent.FutureTask$Sync 
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
| 138 | run  in java.util.concurrent.FutureTask 
| 886 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker 
| 908 | run  in  '' 
^ 662 | 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 create JDBC driver of class 'org.h2.Driver' for connect URL 'jdbc:db2://localhost:50000/DTH3_E:currentSchema=DFP_V115' 
->> 303 | innerRun in java.util.concurrent.FutureTask$Sync 
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
| 138 | run  in java.util.concurrent.FutureTask 
| 886 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker 
| 908 | run  in  '' 
^ 662 | run . . in java.lang.Thread 
Caused by MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create JDBC driver of class 'org.h2.Driver' for connect URL 'jdbc:db2://localhost:50000/DTH3_E:currentSchema=DFP_V115' 
->> 303 | innerRun in java.util.concurrent.FutureTask$Sync 
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
| 138 | run  in java.util.concurrent.FutureTask 
| 886 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker 
| 908 | run  in  '' 
^ 662 | run . . in java.lang.Thread 
Caused by SQLNestedException: Cannot create JDBC driver of class 'org.h2.Driver' for connect URL 'jdbc:db2://localhost:50000/DTH3_E:currentSchema=DFP_V115' 
->> 1452 | createConnectionFactory in org.apache.commons.dbcp.BasicDataSource 
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
| 1371 | createDataSource in  '' 
| 1044 | getConnection in  '' 
| 303 | innerRun in java.util.concurrent.FutureTask$Sync 
| 138 | run . . in java.util.concurrent.FutureTask 
| 886 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker 
| 908 | run . . in  '' 
^ 662 | run  in java.lang.Thread 
Caused by SQLException: No suitable driver 
->> 264 | getDriver in java.sql.DriverManager 
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
| 1437 | createConnectionFactory in org.apache.commons.dbcp.BasicDataSource 
| 1371 | createDataSource in  '' 
| 1044 | getConnection in  '' 
| 303 | innerRun in java.util.concurrent.FutureTask$Sync 
| 138 | run  in java.util.concurrent.FutureTask 
| 886 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker 
| 908 | run  in  '' 
^ 662 | run . . in java.lang.Thread 

，在我的DataSource.groovy文件中，這是我改變了：

environments { 
    development { 
     dataSource { 
      dbCreate = "create-drop" // one of 'create', 'create-drop', 'update', 'validate', '' 
      //url = "jdbc:h2:mem:devDb;MVCC=TRUE;LOCK_TIMEOUT=10000" 
      url = "jdbc:db2://localhost:50000/DTH3_E:currentSchema=DFP_V115" 
     } 
    } 
.... 

有了一些研究，我理解，這是我的休眠配置。任何人都可以驗證嗎？接下來我該去哪裏......相當丟失說至少

如果想知道，數據庫已啓動並運行，我可以使用DbVisualizer連接到它。

在此先感謝您的幫助！如果需要更多細節，請問:)我會盡量澄清問題。

Answer 1

從您的異常中，Grails正嘗試使用H2 JDBC驅動程序連接到您的DB2數據庫。嘗試指定DB2 Hibernate的方言在dataSource聲明，看它是否會使用正確的驅動程序：

dataSource { 
    dialect="org.hibernate.dialect.DB2Dialect" 
} 

另外，還要確保你有必要的DB2罐子在你Grails項目。