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我試圖連接到derby數據庫。在JDBC中使用JDBC連接到derby數據庫
我在控制檯下面的錯誤運行該應用程序後：
01:07:31.698 [main] INFO o.s.j.d.DriverManagerDataSource - Loaded JDBC driver: org.apache.derby.jdbc.EmbeddedDriver
Creating records
01:07:31.826 [main] DEBUG o.s.jdbc.core.JdbcTemplate - Executing prepared SQL update
01:07:31.828 [main] DEBUG o.s.jdbc.core.JdbcTemplate - Executing prepared SQL statement [INSERT INTO `students` (name,age) VALUES (?,?)]
01:07:31.845 [main] DEBUG o.s.jdbc.datasource.DataSourceUtils - Fetching JDBC Connection from DataSource
01:07:31.845 [main] DEBUG o.s.j.d.DriverManagerDataSource - Creating new JDBC DriverManager Connection to [jdbc:derby:c:\temp\database\test01;create=true]
Exception in thread "main" org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Failed to start database 'c:\temp\database\test01' with class loader [email protected], see the next exception for details.
at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:628)
at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:907)
at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:968)
at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:978)
at Student.dao.StudentImplementationOfDao.insert(StudentImplementationOfDao.java:22)
at main.Application.main(Application.java:31)
Caused by: java.sql.SQLException: Failed to start database 'c:\temp\database\test01' with class loader [email protected], see the next exception for details.
at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.seeNextException(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.bootDatabase(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.<init>(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection30.<init>(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection40.<init>(Unknown Source)
at org.apache.derby.jdbc.Driver40.getNewEmbedConnection(Unknown Source)
at org.apache.derby.jdbc.InternalDriver.connect(Unknown Source)
at org.apache.derby.jdbc.AutoloadedDriver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriverManager(DriverManagerDataSource.java:153)
at org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:144)
at org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnectionFromDriver(AbstractDriverBasedDataSource.java:155)
at org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnection(AbstractDriverBasedDataSource.java:120)
at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111)
at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77)
... 6 more
Caused by: java.sql.SQLException: Failed to start database 'c:\temp\database\test01' with class loader [email protected], see the next exception for details.
at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(Unknown Source)
... 24 more
Caused by: java.sql.SQLException: Another instance of Derby may have already booted the database C:\temp\database\test01.
at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(Unknown Source)
at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.generateCsSQLException(Unknown Source)
... 21 more
Caused by: ERROR XSDB6: Another instance of Derby may have already booted the database C:\temp\database\test01.
at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
at org.apache.derby.impl.store.raw.data.BaseDataFileFactory.privGetJBMSLockOnDB(Unknown Source)
at org.apache.derby.impl.store.raw.data.BaseDataFileFactory.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.derby.impl.store.raw.data.BaseDataFileFactory.getJBMSLockOnDB(Unknown Source)
at org.apache.derby.impl.store.raw.data.BaseDataFileFactory.boot(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.boot(Unknown Source)
at org.apache.derby.impl.services.monitor.TopService.bootModule(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.startModule(Unknown Source)
at org.apache.derby.iapi.services.monitor.Monitor.bootServiceModule(Unknown Source)
at org.apache.derby.impl.store.raw.RawStore.boot(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.boot(Unknown Source)
at org.apache.derby.impl.services.monitor.TopService.bootModule(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.startModule(Unknown Source)
at org.apache.derby.iapi.services.monitor.Monitor.bootServiceModule(Unknown Source)
at org.apache.derby.impl.store.access.RAMAccessManager.boot(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.boot(Unknown Source)
at org.apache.derby.impl.services.monitor.TopService.bootModule(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.startModule(Unknown Source)
at org.apache.derby.iapi.services.monitor.Monitor.bootServiceModule(Unknown Source)
at org.apache.derby.impl.db.BasicDatabase.bootStore(Unknown Source)
at org.apache.derby.impl.db.BasicDatabase.boot(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.boot(Unknown Source)
at org.apache.derby.impl.services.monitor.TopService.bootModule(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.bootService(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.startProviderService(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.findProviderAndStartService(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.startPersistentService(Unknown Source)
at org.apache.derby.iapi.services.monitor.Monitor.startPersistentService(Unknown Source)
... 21 more
我建立連接到數據庫的代碼是：
DriverManagerDataSource ds = new DriverManagerDataSource();
ds.setDriverClassName("org.apache.derby.jdbc.EmbeddedDriver");
ds.setUrl("jdbc:derby:c:\\temp\\database\\test01;create=true");
ds.setUsername("");
ds.setPassword("");
siod.setDataSource(ds);
從我能在理解上面顯示的錯誤與試圖插入的PreparedStatement有關。
的SQL語句是：
"INSERT INTO `students` (name,age) VALUES (?,?)
我解析這個SQL的實例化的JdbcTemplate其中有上面提到的數據源。 這裏是確切的代碼：
public void insert(Student student)
{
//ds is simply the dataSource that gets created in the code example above
JdbcTemplate create = new JdbcTemplate(ds);
create.update(sql,new Object[]{student.name,student.age});
}
我敢肯定，這個問題有一個簡單的答案，但我就是不明白，究竟是什麼原因造成這個錯誤。這是聲明嗎？是否導致連接失敗？我該如何解決導致我的代碼失敗的問題？
謝謝
錯誤的相關部分是'java.sql.SQLException：無法啓動數據庫'c：\ temp \ database \ test01''。 –