【发布时间】：2015-10-09 20:41:12
【问题描述】：
下面提到的方法是我的 entityendpoint 类中的一个方法：-
@ApiMethod(name = "insertEventEntity")
public EventEntity insertEventEntity(EventEntity eventEntity) {
PersistenceManagerFactory pmfInstance =
JDOHelper.getPersistenceManagerFactory("transactions-optional");
PersistenceManager pm = pmfInstance.getPersistenceManager();
Logger log = Logger.getLogger(EventEntityEndpoint.class.getName());
log.info("pm="+pm);
EventEntity event = new EventEntity("First", "First", "18/7/2015", "6:00", "18/7/2015", "7:00");
try
{
pm.makePersistent(event);
log.info("event="+event);
}
finally
{
pm.close();
}
return event
}
下面提到的代码是调用上述方法的代码：-
@Override
protected String doInBackground(Void... params)
{
EventEntityApi.Builder builder = new EventEntityApi.Builder(AndroidHttp.newCompatibleTransport(), new AndroidJsonFactory(), null).setRootUrl("https://minote-997.appspot.com/_ah/api/");
// end of optional local run code
EventEntity eventEntity = new EventEntity();
EventEntityApi eventApi = builder.build();
try
{
System.out.println("inserting events");
EventEntityApi.InsertEventEntity insertEventEntity = eventApi.insertEventEntity(eventEntity);
insertEventEntity.execute();
System.out.println("inserting events1");
}
catch(IOException exception)
{
System.out.println("IoException ="+exception.getStackTrace());
}
return "Success";
}
上面提到的方法 insertEventEntity() 被调用，但我在谷歌开发者控制台 -> 监控 -> 日志中收到一些错误日志。完整的异常堆栈跟踪如下：-
I 13:22:12.038 org.datanucleus.PersistenceConfiguration setProperty: Property datanucleus.appengine.singletonPMFForName unknown - will be ignored
I 13:22:12.039 org.datanucleus.PersistenceConfiguration setProperty: Property datanucleus.appengine.autoCreateDatastoreTxns unknown - will be ignored
I 13:22:12.040 org.datanucleus.PersistenceConfiguration setProperty: Property datanucleus.appengine.datastoreReadConsistency unknown - will be ignored
I 13:22:13.337 org.datanucleus.api.jdo.NucleusJDOHelper getJDOExceptionForNucleusException: Exception thrown
There is no available StoreManager of type "appengine". Make sure that you have put the relevant DataNucleus store plugin in your CLASSPATH and if defining a connection via JNDI or DataSource you also need to provide persistence property "datanucleus.storeManagerType"
org.datanucleus.exceptions.NucleusUserException: There is no available StoreManager of type "appengine". Make sure that you have put the relevant DataNucleus store plugin in your CLASSPATH and if defining a connection via JNDI or DataSource you also need to provide persistence property "datanucleus.storeManagerType"
at org.datanucleus.NucleusContext.createStoreManagerForProperties(NucleusContext.java:506)
at org.datanucleus.NucleusContext.initialise(NucleusContext.java:288)
at org.datanucleus.api.jdo.JDOPersistenceManagerFactory.freezeConfiguration(JDOPersistenceManagerFactory.java:660)
at org.datanucleus.api.jdo.JDOPersistenceManagerFactory.createPersistenceManagerFactory(JDOPersistenceManagerFactory.java:326)
at org.datanucleus.api.jdo.JDOPersistenceManagerFactory.getPersistenceManagerFactory(JDOPersistenceManagerFactory.java:195)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_$1.run(Method_.java:167)
at java.security.AccessController.doPrivileged(Native Method)
at com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_.privilegedInvoke(Method_.java:164)
at com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_.invoke_(Method_.java:125)
at com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_.invoke(Method_.java:45)
at javax.jdo.JDOHelper$16.run(JDOHelper.java:1965)
at com.google.apphosting.runtime.security.shared.intercept.java.security.AccessController_.doPrivileged(AccessController_.java:63)
at javax.jdo.JDOHelper.invoke(JDOHelper.java:1960)
at javax.jdo.JDOHelper.invokeGetPersistenceManagerFactoryOnImplementation(JDOHelper.java:1166)
at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:808)
at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:1093)
at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:919)
at com.gp.app.minote.backend.entities.EventEntityEndpoint.insertEventEntity(EventEntityEndpoint.java:59)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_$1.run(Method_.java:167)
at java.security.AccessController.doPrivileged(Native Method)
at com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_.privilegedInvoke(Method_.java:164)
at com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_.invoke_(Method_.java:125)
at com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_.invoke(Method_.java:45)
at com.google.api.server.spi.SystemService.invokeServiceMethod(SystemService.java:359)
at com.google.api.server.spi.SystemServiceServlet.execute(SystemServiceServlet.java:160)
at com.google.api.server.spi.SystemServiceServlet.doPost(SystemServiceServlet.java:118)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at com.googlecode.objectify.cache.AsyncCacheFilter.doFilter(AsyncCacheFilter.java:59)
at com.googlecode.objectify.ObjectifyFilter.doFilter(ObjectifyFilter.java:49)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java:125)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:35)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.utils.servlet.JdbcMySqlConnectionCleanupFilter.doFilter(JdbcMySqlConnectionCleanupFilter.java:60)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:257)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
at com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:76)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:146)
at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:482)
at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:437)
at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:444)
at com.google.tracing.CurrentContext.runInContext(CurrentContext.java:230)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:308)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:300)
at com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:441)
at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:234)
at java.lang.Thread.run(Thread.java:745)
我还在 android studio 中附加了我的外部库的图像：-
还请在 /webapp/WEB-INF/classes/META-INF 文件夹中找到附加的 jdoconfig.xml 文件：-
<?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"/>
<property name="datanucleus.appengine.datastoreReadConsistency" value="EVENTUAL" />
</persistence-manager-factory>
</jdoconfig>
我使用 android studio 作为 IDE 进行开发。上面附加的代码片段来自我的 android 应用程序。我正在使用谷歌应用引擎数据存储作为我的应用程序的后端，而对于实体持久性，我正在使用 JDO 框架。
请提出上述异常（堆栈跟踪）的可能原因。
【问题讨论】：
-
消息 没有可用的“appengine”类型的 StoreManager。确保您已将相关的 DataNucleus 存储插件放在您的 CLASSPATH 中足够清晰。您的 CLASSPATH 中没有“datanucleus-appengine”jar
-
Sandeep，您是否尝试包含正确的插件？你还遇到这个错误吗？
-
@NeilStockton：您提供的解决方案奏效了。非常感谢。
-
@Patrice：我现在遇到了一个新异常。这个解决了。现在我得到了这个异常：-org.datanucleus.api.jdo.exceptions.ClassNotPersistenceCapableException：类“com.gp.app.minote.backend.entities.EventEntity”是不可持久的。这意味着它要么没有被增强，要么文件的增强版本不在 CLASSPATH 中（或者被未增强的版本隐藏），或者找不到该类的元数据/注释。
-
标签： android google-app-engine jdo