带有 MSSQL 服务器的 Grails

Question

我尝试创建我的第一个 grails 应用程序，但是将我的应用程序连接到 MSSQL 服务器时出现了一些问题。

我的操作是（通过 windows cmd）：

1. 命令grails create-app hello
2. 命令cd hello

3. 之后我配置了dataSource文件：

   dataSource {
   
   pooled = true
   jmxExport = true
   driverClassName = "com.microsoft.sqlserver.jdbc.SQLServerDriver"
   username = "login"
   password = "password" }
   
   environments {
   
   development {
       dataSource {
           dbCreate = "update"
           url = "jdbc:jtds:sqlserver:\\<server-ip>;databaseName=Grails"
       }
   }
   test {
       dataSource {
           dbCreate = "update"
           url = "jdbc:jtds:sqlserver:\\<server-ip>;databaseName=Grails"
       }
   }
   production {
       dataSource {
           dbCreate = "update"
           url = "jdbc:jtds:sqlserver:\\<server-ip>;databaseName=Grails"
   
       }
   } 
   }
   

   已经在 SQL Server 中创建了基础“Grails”。

4. 命令grails create-domain-class Hi

   然后我配置了域类 Hi.groovy

   class Hi { 
      String word  
      int num
      static constraints = {
      } 
   }
   

5. 最后我通过命令 grails run-app

运行了我的应用程序

我认为在我的 Grails 基础中应该创建带有两个字段的新表 Hi，但是我在这样的堆栈跟踪中遇到错误：

    | Configuring classpath
ёхэ 01, 2014 2:54:33 PM java.util.prefs.WindowsPreferences <init>
WARNING: Could not open/create prefs root node Software\JavaSoft\Prefs at root 0
| Running Grails application
Error |
2014-09-01 14:54:50,750 [localhost-startStop-1] ERROR pool.ConnectionPool  - Una
ble to create initial connections of pool.
Message: com.microsoft.sqlserver.jdbc.SQLServerDriver
    Line | Method
->>  334 | innerRun  in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|    166 | run       in java.util.concurrent.FutureTask
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run . . . in java.lang.Thread
Caused by ClassNotFoundException: com.microsoft.sqlserver.jdbc.SQLServerDriver
->>  366 | run       in java.net.URLClassLoader$1
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|    355 | run       in     ''
|    354 | findClass in java.net.URLClassLoader
|    423 | loadClass in java.lang.ClassLoader
|    266 | forName . in java.lang.Class
|    334 | innerRun  in java.util.concurrent.FutureTask$Sync
|    166 | run . . . in java.util.concurrent.FutureTask
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run       in java.lang.Thread
Error |
2014-09-01 14:54:50,798 [localhost-startStop-1] ERROR pool.ConnectionPool  - Una
ble to create initial connections of pool.
Message: com.microsoft.sqlserver.jdbc.SQLServerDriver
    Line | Method
->>  334 | innerRun  in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|    166 | run       in java.util.concurrent.FutureTask
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run . . . in java.lang.Thread
Caused by ClassNotFoundException: com.microsoft.sqlserver.jdbc.SQLServerDriver
->>  366 | run       in java.net.URLClassLoader$1
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|    355 | run       in     ''
|    354 | findClass in java.net.URLClassLoader
|    423 | loadClass in java.lang.ClassLoader
|    266 | forName . in java.lang.Class
|    334 | innerRun  in java.util.concurrent.FutureTask$Sync
|    166 | run . . . in java.util.concurrent.FutureTask
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run       in java.lang.Thread
Error |
2014-09-01 14:54:50,841 [localhost-startStop-1] ERROR pool.ConnectionPool  - Una
ble to create initial connections of pool.
Message: com.microsoft.sqlserver.jdbc.SQLServerDriver
    Line | Method
->>  334 | innerRun  in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|    166 | run       in java.util.concurrent.FutureTask
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run . . . in java.lang.Thread
Caused by ClassNotFoundException: com.microsoft.sqlserver.jdbc.SQLServerDriver
->>  366 | run       in java.net.URLClassLoader$1
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|    355 | run       in     ''
|    354 | findClass in java.net.URLClassLoader
|    423 | loadClass in java.lang.ClassLoader
|    266 | forName . in java.lang.Class
|    334 | innerRun  in java.util.concurrent.FutureTask$Sync
|    166 | run . . . in java.util.concurrent.FutureTask
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run       in java.lang.Thread
Error |
2014-09-01 14:54:50,860 [localhost-startStop-1] ERROR context.GrailsContextLoade
rListener  - Error initializing the application: Error creating bean with name '
transactionManagerPostProcessor': Initialization of bean failed; nested exceptio
n is org.springframework.beans.factory.BeanCreationException: Error creating bea
n with name 'transactionManager': Cannot resolve reference to bean 'sessionFacto
ry' while setting bean property 'sessionFactory'; nested exception is org.spring
framework.beans.factory.BeanCreationException: Error creating bean with name 'se
ssionFactory': Cannot resolve reference to bean 'hibernateProperties' while sett
ing bean property 'hibernateProperties'; nested exception is org.springframework
.beans.factory.BeanCreationException: Error creating bean with name 'hibernatePr
operties': Cannot resolve reference to bean 'dialectDetector' while setting bean
 property 'properties' with key [hibernate.dialect]; nested exception is org.spr
ingframework.beans.factory.BeanCreationException: Error creating bean with name
'dialectDetector': Invocation of init method failed; nested exception is org.spr
ingframework.jdbc.support.MetaDataAccessException: Error while extracting Databa
seMetaData; nested exception is java.sql.SQLException: com.microsoft.sqlserver.j
dbc.SQLServerDriver
Message: Error creating bean with name 'transactionManagerPostProcessor': Initia
lization of bean failed; nested exception is org.springframework.beans.factory.B
eanCreationException: Error creating bean with name 'transactionManager': Cannot
 resolve reference to bean 'sessionFactory' while setting bean property 'session
Factory'; nested exception is org.springframework.beans.factory.BeanCreationExce
ption: 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: Er
ror creating bean with name 'hibernateProperties': Cannot resolve reference to b
ean 'dialectDetector' while setting bean property 'properties' with key [hiberna
te.dialect]; nested exception is org.springframework.beans.factory.BeanCreationE
xception: Error creating bean with name 'dialectDetector': Invocation of init me
thod failed; nested exception is org.springframework.jdbc.support.MetaDataAccess
Exception: Error while extracting DatabaseMetaData; nested exception is java.sql
.SQLException: com.microsoft.sqlserver.jdbc.SQLServerDriver
    Line | Method
->>  334 | innerRun  in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|    166 | run       in java.util.concurrent.FutureTask
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run . . . in java.lang.Thread
Caused by BeanCreationException: Error creating bean with name 'transactionManag
er': Cannot resolve reference to bean 'sessionFactory' while setting bean proper
ty 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanC
reationException: Error creating bean with name 'sessionFactory': Cannot resolve
 reference to bean 'hibernateProperties' while setting bean property 'hibernateP
roperties'; nested exception is org.springframework.beans.factory.BeanCreationEx
ception: Error creating bean with name 'hibernateProperties': Cannot resolve ref
erence to bean 'dialectDetector' while setting bean property 'properties' with k
ey [hibernate.dialect]; nested exception is org.springframework.beans.factory.Be
anCreationException: Error creating bean with name 'dialectDetector': Invocation
 of init method failed; nested exception is org.springframework.jdbc.support.Met
aDataAccessException: Error while extracting DatabaseMetaData; nested exception
is java.sql.SQLException: com.microsoft.sqlserver.jdbc.SQLServerDriver
->>  334 | innerRun  in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|    166 | run       in java.util.concurrent.FutureTask
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run . . . in java.lang.Thread
Caused by BeanCreationException: Error creating bean with name 'sessionFactory':
 Cannot resolve reference to bean 'hibernateProperties' while setting bean prope
rty 'hibernateProperties'; nested exception is org.springframework.beans.factory
.BeanCreationException: Error creating bean with name 'hibernateProperties': Can
not resolve reference to bean 'dialectDetector' while setting bean property 'pro
perties' with key [hibernate.dialect]; nested exception is org.springframework.b
eans.factory.BeanCreationException: Error creating bean with name 'dialectDetect
or': Invocation of init method failed; nested exception is org.springframework.j
dbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; ne
sted exception is java.sql.SQLException: com.microsoft.sqlserver.jdbc.SQLServerD
river
->>  334 | innerRun  in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|    166 | run       in java.util.concurrent.FutureTask
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run . . . in java.lang.Thread
Caused by BeanCreationException: Error creating bean with name 'hibernatePropert
ies': Cannot resolve reference to bean 'dialectDetector' while setting bean prop
erty 'properties' with key [hibernate.dialect]; nested exception is org.springfr
amework.beans.factory.BeanCreationException: Error creating bean with name 'dial
ectDetector': Invocation of init method failed; nested exception is org.springfr
amework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMet
aData; nested exception is java.sql.SQLException: com.microsoft.sqlserver.jdbc.S
QLServerDriver
->>  334 | innerRun  in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|    166 | run       in java.util.concurrent.FutureTask
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run . . . in java.lang.Thread
Caused by BeanCreationException: Error creating bean with name 'dialectDetector'
: Invocation of init method failed; nested exception is org.springframework.jdbc
.support.MetaDataAccessException: Error while extracting DatabaseMetaData; neste
d exception is java.sql.SQLException: com.microsoft.sqlserver.jdbc.SQLServerDriv
er
->>  334 | innerRun  in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|    166 | run       in java.util.concurrent.FutureTask
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run . . . in java.lang.Thread
Caused by MetaDataAccessException: Error while extracting DatabaseMetaData; nest
ed exception is java.sql.SQLException: com.microsoft.sqlserver.jdbc.SQLServerDri
ver
->>  334 | innerRun  in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|    166 | run       in java.util.concurrent.FutureTask
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run . . . in java.lang.Thread
Caused by SQLException: com.microsoft.sqlserver.jdbc.SQLServerDriver
->>  334 | innerRun  in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|    166 | run       in java.util.concurrent.FutureTask
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run . . . in java.lang.Thread
Caused by ClassNotFoundException: com.microsoft.sqlserver.jdbc.SQLServerDriver
->>  366 | run       in java.net.URLClassLoader$1
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|    355 | run       in     ''
|    354 | findClass in java.net.URLClassLoader
|    423 | loadClass in java.lang.ClassLoader
|    266 | forName . in java.lang.Class
|    334 | innerRun  in java.util.concurrent.FutureTask$Sync
|    166 | run . . . in java.util.concurrent.FutureTask
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    722 | run       in java.lang.Thread
| Error Forked Grails VM exited with error

我做错了什么？

Answer 1

原因是无法加载 JDBC 驱动程序，如跟踪中所报告的：

ClassNotFoundException: com.microsoft.sqlserver.jdbc.SQLServerDriver

我在 DataSource.groovy 中使用以下内容：

driverClassName = "net.sourceforge.jtds.jdbc.Driver"
dialect = "org.hibernate.dialect.SQLServerDialect"

然后在 BuildConfig.groovy 中添加如下内容：

dependencies {
    runtime 'net.sourceforge.jtds:jtds:1.3.0'
}