Grails 2.3.5在每次代码更改后都需要“grails clean”

Question

每次修改我的代码时，我必须在运行grails run-app之前运行grails clean。如果我不这样做，我得到这样的消息：

| 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 

这是非常奇怪的，因为它似乎Grails的无法加载Oracle数据库驱动程序......但如果我跑

grails clean 
grails run-app 

它加载罚款

我正在使用的这个应用程序今天从Grails 2.2.4升级。升级是没有用的（直到这个）。我所要做的就是改变休眠和tomcat版本然后运行grails upgrade; grails clean

任何想法如何，我可以得到它，所以我可以修改代码，只需重新启动使用grails run-app或更好......让重装功能工作，所以当我修改代码时，它会自动编译我刚刚保存的文件（这在Grails 2.2.4中效果很好）。

Answer 1

你试过grails -reloading run-app？

既然你已经提到你只是在升级过程中改变了插件版本，我想你没有使用分叉模式，默认情况下重新加载是启用的。

看一看Forked Execution and the Reloading Agent。另请注意，在2.3。*中已弃用grails upgrade命令。