Question

我刚刚升级到Grails 2.0，我在run-app上看到了以下错误。它表示线上的NPE只是

return fileSpec;

我现在已经搜索了互联网一段时间了，我发现有些人在使用各种插件时遇到了问题，但没有具体说明这个NPE问题。使用组件扫描程序加载我的Spring bean似乎是一个问题，但我很难过为什么它不再工作了。在Grails 1.3.7之前，它正在顺利地滴答作响 - ＆gt; 2.0升级。

如果有任何Grails或者也许是春季3.1大师可以指出我正确的方向，我将不胜感激。感谢。

这是错误：

=============== DEBUG MESSAGE: unimplemented bytecode ================
| Error 2012-01-17 21:21:42,273 [Thread-10] ERROR context.GrailsContextLoader  - Error executing bootstraps: Error creating bean with name 'fileSpec': Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public myproject.spec.FileSpec myproject.spec.MyFileSpecGenerator.createFileSpec()] threw exception; nested exception is java.lang.NullPointerException
Message: Error creating bean with name 'fileSpec': Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public myproject.spec.FileSpec myproject.spec.MyFileSpecGenerator.createFileSpec()] threw exception; nested exception is java.lang.NullPointerException
   Line | Method
->> 303 | innerRun in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   138 | run      in java.util.concurrent.FutureTask
|   886 | runTask  in java.util.concurrent.ThreadPoolExecutor$Worker
|   908 | run      in     ''
^   680 | run . .  in java.lang.Thread
Caused by BeanDefinitionStoreException: Factory method [public myproject.spec.FileSpec myproject.spec.MyFileSpecGenerator.createFileSpec()] threw exception; nested exception is java.lang.NullPointerException
->> 303 | innerRun in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   138 | run      in java.util.concurrent.FutureTask
|   886 | runTask  in java.util.concurrent.ThreadPoolExecutor$Worker
|   908 | run      in     ''
^   680 | run . .  in java.lang.Thread
Caused by NullPointerException: null
->> 2027 | createFileSpec in myproject.spec.MyFileSpecGenerator
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   303 | innerRun in java.util.concurrent.FutureTask$Sync
|   138 | run . .  in java.util.concurrent.FutureTask
|   886 | runTask  in java.util.concurrent.ThreadPoolExecutor$Worker
|   908 | run . .  in     ''
^   680 | run      in java.lang.Thread

可能相关：我的resources.groovy

beans = {
    fileSpec(fileSpecGenerator:"createFileSpec")
}

升级到Grails 2.0后的NPE

0 个答案: