java.lang.NoClassDefFoundError:javax/persistence/Persistence [英] java.lang.NoClassDefFoundError: javax/persistence/Persistence

问题描述

我正在使用Netbeans 6.8并构建简单的Maven Web应用程序项目.

i'm using Netbeans 6.8 and build simple Maven web application project.

为持久实体创建实体和主文件[也创建持久单元]并使用EclipsLink.

create Entity and main file for persist Entity [also create persist unit] and use EclipsLink.

但是当我运行主文件时出现此错误:

but when i run main file get this error :

Exception in thread "main" java.lang.NoClassDefFoundError: javax/persistence/Persistence
        at Main.main(Main.java:34)
Caused by: java.lang.ClassNotFoundException: javax.persistence.Persistence
        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
        ... 1 more

在netbeans项目窗口和我的项目库文件夹中，仅添加此软件包:

in netbeans projects window and in my project libraries folder only add this package :

javaee-web-api-6.0.jar [提供]

javaee-web-api-6.0.jar [provided]

请帮助我解决此错误

谢谢

推荐答案

点击

Click Here to download hibernate-jpa-2.0-api-1.0.1.Final.jar and put it into the project library, your application will work fine. Good luck:)

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