目前有一个 grails 2.2.1 的新项目，我收到此错误：
| Error 2013-08-14 15:31:26,358 [localhost-startStop-1] ERROR context.GrailsContextLoader - Error initializing the application: Error creating bean with name 'annotationHandlerMapping': Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: org/codehaus/jackson/annotate/JacksonAnnotation
Message: Error creating bean with name 'annotationHandlerMapping': Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: org/codehaus/jackson/annotate/JacksonAnnotation
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 NoClassDefFoundError: org/codehaus/jackson/annotate/JacksonAnnotation
->> 3098 | initAnnotationsIfNecessary in java.lang.Class
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 3057 | getAnnotation in ''
| 3070 | isAnnotationPresent in ''
| 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: org.codehaus.jackson.annotate.JacksonAnnotation
->> 175 | findClass in org.codehaus.groovy.tools.RootLoader
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 423 | loadClass in java.lang.ClassLoader
| 147 | loadClass in org.codehaus.groovy.tools.RootLoader
| 356 | loadClass in java.lang.ClassLoader
| 3098 | initAnnotationsIfNecessary in java.lang.Class
| 3057 | getAnnotation in ''
| 3070 | isAnnotationPresent in ''
| 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
我有一个解决方法
grails clean
grails refresh-dependencies
grails run-app
这一直有效，直到我需要重新启动我的 grails 应用程序。关于为什么会发生这种情况的任何想法？