grails run-app隨機拋出：java.lang.NoClassDefFoundError：Lorg / codehaus / groovy / grails / plugins / web / async / api / ControllersAsyncApi

Question

當我啟動我的grails 2.2.0應用程序時，我隨機收到如下錯誤消息，但它也隨機成功啟動，沒有錯誤。 沒有更改代碼，我只是嘗試多次運行grails dev run-app 。

$ grails dev run-app

我之前也嘗試過grails clean ，但這沒什么區別; 錯誤仍然隨機發生。

啟動錯誤：

| Packaging Grails application.....
webxml.WebxmlGrailsPlugin Loading default config file: class DefaultWebXmlConfig
webxml.WebxmlGrailsPlugin Did not find application config file: WebXmlConfig
webxml.WebxmlGrailsPlugin Loading default config file: class DefaultWebXmlConfig
| Running Grails application
context.GrailsContextLoader [GrailsContextLoader] Loading context. Creating parent application context
context.ContextLoader Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'pluginManager' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.RuntimeException: Unable to locate constructor with Class parameter for class org.codehaus.groovy.grails.commons.DefaultGrailsControllerClass
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:680)
Caused by: java.lang.RuntimeException: Unable to locate constructor with Class parameter for class org.codehaus.groovy.grails.commons.DefaultGrailsControllerClass
    ... 5 more
Caused by: java.lang.reflect.InvocationTargetException
    ... 5 more
Caused by: java.lang.NoClassDefFoundError: Lorg/codehaus/groovy/grails/plugins/web/async/api/ControllersAsyncApi;
    at java.lang.Class.privateGetDeclaredFields(Class.java:2291)
    at java.lang.Class.getDeclaredFields(Class.java:1743)
    ... 5 more
Caused by: java.lang.ClassNotFoundException: org.codehaus.groovy.grails.plugins.web.async.api.ControllersAsyncApi
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
    ... 7 more
context.GrailsContextLoader Error initializing the application: Error creating bean with name 'pluginManager' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.RuntimeException: Unable to locate constructor with Class parameter for class org.codehaus.groovy.grails.commons.DefaultGrailsControllerClass
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'pluginManager' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.RuntimeException: Unable to locate constructor with Class parameter for class org.codehaus.groovy.grails.commons.DefaultGrailsControllerClass
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:680)
Caused by: java.lang.RuntimeException: Unable to locate constructor with Class parameter for class org.codehaus.groovy.grails.commons.DefaultGrailsControllerClass
    ... 5 more
Caused by: java.lang.reflect.InvocationTargetException
    ... 5 more
Caused by: java.lang.NoClassDefFoundError: Lorg/codehaus/groovy/grails/plugins/web/async/api/ControllersAsyncApi;
    at java.lang.Class.privateGetDeclaredFields(Class.java:2291)
    at java.lang.Class.getDeclaredFields(Class.java:1743)
    ... 5 more
Caused by: java.lang.ClassNotFoundException: org.codehaus.groovy.grails.plugins.web.async.api.ControllersAsyncApi
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
    ... 7 more

環境：

• Mac OS X Lion
• JDK 1.6.0_31

類似的帖子，但仍然不同，因為我沒有運行Tomcat：

• 在Tomcat6上運行的Grails應用程序 - 上下文初始化失敗

Answer 1

將servlet版本從3.0更改為2.5（反之亦然）后出現此異常。

我輸入以下內容解決了這個問題：

grails clean
grails clean-all

已再次獲取依賴項並且應用程序開始運行。

Answer 2

嘗試將servlet版本標記為v3.0。 我有同樣的零星問題，並通過轉到v.3.0解決了它

文件：BuildConfig.groovy

grails.servlet.version =“3.0”//根據目標容器合規性（2.5或3.0）進行更改

之后grails-plugin-async-2.2.0.jar出現在classpath上：

％HOME％.grails \\常春藤緩存\\ org.grails \\的Grails，插件，異步\\罐\\

Answer 3

嘗試手動刪除目標，以防干凈不起作用。