類org.datanucleus.api.jdo.PersistenceManagerFactoryClass未發現

我使用谷歌應用程序引擎（AppEngine上的Java-SDK-1.6.6）使用JDO和Maven（Maven的GAE-插件）爲該項目的應用結構和構建。使用DataNucleus增強器增強我的域類時，構建是成功的。類org.datanucleus.api.jdo.PersistenceManagerFactoryClass未發現

運行應用程序時，我面對這個問題：類org.datanucleus.api.jdo.PersistenceManagerFactoryClass沒有被發現。任何人都可以請指教。由於

PS：我已經做了的grep（在Linux上）發現在App Engine SDK文件夾中的PersistenceManagerFactoryClass，我找不到它。

Could not instantiate bean class [com.peerbuccoss.apps.mtp.dao.impl.CommonDaoImpl]: Constructor threw exception; nested exception is javax.jdo.JDOFatalUserException: Class  org.datanucleus.api.jdo.PersistenceManagerFactoryClass was not found. 
NestedThrowables: 
java.lang.ClassNotFoundException:  org.datanucleus.api.jdo.PersistenceManagerFactoryClass: 
java.lang.ClassNotFoundException: org.datanucleus.api.jdo.PersistenceManagerFactoryClass 
at java.net.URLClassLoader$1.run(URLClassLoader.java:366) 
at java.net.URLClassLoader$1.run(URLClassLoader.java:355) 
at java.security.AccessController.doPrivileged(Native Method) 
at java.net.URLClassLoader.findClass(URLClassLoader.java:354) 
at java.lang.ClassLoader.loadClass(ClassLoader.java:423) 
at com.google.appengine.tools.development.IsolatedAppClassLoader.loadClass(IsolatedAppClassLoader.java:176) 
at java.lang.ClassLoader.loadClass(ClassLoader.java:356) 
at java.lang.Class.forName0(Native Method) 
at java.lang.Class.forName(Class.java:264) 
at javax.jdo.JDOHelper$18.run(JDOHelper.java:2018) 
at javax.jdo.JDOHelper$18.run(JDOHelper.java:2017) 
at java.security.AccessController.doPrivileged(Native Method) 
at javax.jdo.JDOHelper.forName(JDOHelper.java:2015) 
at javax.jdo.JDOHelper.invokeGetPersistenceManagerFactoryOnImplementation(JDOHelper.java:1162) 
at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:808) 
at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:1093) 
at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:919)

來源

2012-06-21 shameem_z

我更改屬性javax.jdo.PersistenceManagerFactoryClass與隨着2.1.2版本，你必須使用以下的PersistenceManagerFactoryClass更新jdconfig.xml值org.datanucleus.store.appengine.jdo.DatastoreJDOPersistenceManagerFactory，它工作正常。 –

所以你使用GAE JDO插件的v1。顯然這是古老的，所以稍後可能會遇到問題。最好使用該插件的v2 – DataNucleus

@DataNucleus感謝您的回覆。我從V1遷移到v2和利用谷歌（https://developers.google.com/appengine/docs/java/datastore/jdo/overview-dn2#Creating_the_jdoconfig_xml_File），我有同樣的問題「組織級的配置。未找到datanucleus.api.jdo.PersistenceManagerFactoryClass「。 –

在我來說，我是使用DataNucleus將-appengine- 2.1.2代替DataNucleus將-appengine- 1.0.10。

<property name="javax.jdo.PersistenceManagerFactoryClass" 
     value="org.datanucleus.api.jdo.JDOPersistenceManagerFactory"/>

我jdconfig.xml是：

<?xml version="1.0" encoding="utf-8"?> 
<jdoconfig xmlns="http://java.sun.com/xml/ns/jdo/jdoconfig" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:noNamespaceSchemaLocation="http://java.sun.com/xml/ns/jdo/jdoconfig"> 

    <persistence-manager-factory name="transactions-optional"> 
     <property name="javax.jdo.PersistenceManagerFactoryClass" 
      value="org.datanucleus.api.jdo.JDOPersistenceManagerFactory"/> 
     <property name="javax.jdo.option.ConnectionURL" value="appengine"/> 
     <property name="javax.jdo.option.NontransactionalRead" value="true"/> 
     <property name="javax.jdo.option.NontransactionalWrite" value="true"/> 
     <property name="javax.jdo.option.RetainValues" value="true"/> 
     <property name="datanucleus.appengine.autoCreateDatastoreTxns" value="true"/> 
     <property name="datanucleus.appengine.singletonPMFForName" value="true"/> 
    </persistence-manager-factory> 
</jdoconfig>

來源

2014-10-05 09:25:49

類org.datanucleus.api.jdo.PersistenceManagerFactoryClass未發現

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