grails - 每次更改代码后，Grails 2.3.5需要 “grails clean”

Question

每次修改代码时，都必须先运行grails clean，然后再运行grails run-app。如果不这样做，我会收到如下消息:

| Error 2014-02-13 16:33:16,774 [localhost-startStop-1] ERROR context.GrailsContextLoader  - Error initializing the application: 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 'dataSource' while setting bean property 'dataSource'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource': Cannot resolve reference to bean 'dataSourceUnproxied' while setting bean property 'targetDataSource'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSourceUnproxied': Error setting property values; nested exception is org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:
PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property 'driverClassName' threw exception; nested exception is java.lang.IllegalStateException: Could not load JDBC driver class [oracle.jdbc.OracleDriver]
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 'dataSource' while setting bean property 'dataSource'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource': Cannot resolve reference to bean 'dataSourceUnproxied' while setting bean property 'targetDataSource'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSourceUnproxied': Error setting property values; nested exception is org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:
PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property 'driverClassName' threw exception; nested exception is java.lang.IllegalStateException: Could not load JDBC driver class [oracle.jdbc.OracleDriver]
    Line | Method
->>  262 | run       in java.util.concurrent.FutureTask
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    744 | run       in java.lang.Thread

这真的很奇怪，因为Grails似乎无法加载Oracle数据库驱动程序...但是如果我运行它可以很好地加载

grails clean
grails run-app

我正在使用的该应用今天已从Grails 2.2.4升级。升级似乎还不够(直到此)。我所要做的就是更改休眠和tomcat版本，然后运行grails upgrade; grails clean
关于如何获取它的任何想法，以便我可以修改代码并使用grails run-app或更佳的代码重新启动...使重新加载功能起作用，因此，在我进行代码修改时，它会自动编译刚刚保存的文件(这在Grails中非常有用2.2.4)。

Answer 1

您尝试过grails -reloading run-app吗？

由于您已经提到过您仅在升级过程中更改了插件版本，因此我想您没有使用默认启用重新加载的 fork 模式。

看看Forked Execution and the Reloading Agent。另请注意，在2.3。*中不推荐使用grails upgrade命令。