Question

我正在尝试在字符串字段上为数据库模型使用eBean @Encrypted批注。文档使它看起来很简单，但是我在浏览器中使用内置的H2内存数据库获得了一个非常模糊的运行时错误：

package models; 

import java.util.*; 
import javax.persistence.*; 
import play.db.ebean.*; 
import play.db.ebean.Model.Finder; 
import play.data.format.*; 
import play.data.validation.*; 
import com.avaje.ebean.*; 
import com.avaje.ebean.annotation.*; 

@Entity  
public class Test extends Model { 

 @Id 
 public Long id; 

 @Encrypted 
 public String identifier;

}

产生与@Encrypted注释相关的以下运行时错误：

Unexpected exception
RuntimeException: Error reading annotations for models.Test
No source available, here is the exception stack trace:
->java.lang.RuntimeException: Error reading annotations for models.Test
     com.avaje.ebeaninternal.server.deploy.parse.ReadAnnotations.readInitial(ReadAnnotations.java:26)
     com.avaje.ebeaninternal.server.deploy.BeanDescriptorManager.createDeployBeanInfo(BeanDescriptorManager.java:1026)
     com.avaje.ebeaninternal.server.deploy.BeanDescriptorManager.readEntityDeploymentInitial(BeanDescriptorManager.java:533)
     com.avaje.ebeaninternal.server.deploy.BeanDescriptorManager.deploy(BeanDescriptorManager.java:250)
     com.avaje.ebeaninternal.server.core.InternalConfiguration.<init>(InternalConfiguration.java:124)
     com.avaje.ebeaninternal.server.core.DefaultServerFactory.createServer(DefaultServerFactory.java:210)
     com.avaje.ebeaninternal.server.core.DefaultServerFactory.createServer(DefaultServerFactory.java:64)
     com.avaje.ebean.EbeanServerFactory.create(EbeanServerFactory.java:59)
     play.db.ebean.EbeanPlugin.onStart(EbeanPlugin.java:79)
     play.api.Play$$anonfun$start$1$$anonfun$apply$mcV$sp$1.apply(Play.scala:63)
     play.api.Play$$anonfun$start$1$$anonfun$apply$mcV$sp$1.apply(Play.scala:63)
     scala.collection.immutable.List.foreach(List.scala:309)
     play.api.Play$$anonfun$start$1.apply$mcV$sp(Play.scala:63)
     play.api.Play$$anonfun$start$1.apply(Play.scala:63)
     play.api.Play$$anonfun$start$1.apply(Play.scala:63)
     play.utils.Threads$.withContextClassLoader(Threads.scala:18)
     play.api.Play$.start(Play.scala:62)
     play.core.ReloadableApplication$$anonfun$get$1$$anonfun$1.apply(ApplicationProvider.scala:133)
     play.core.ReloadableApplication$$anonfun$get$1$$anonfun$1.apply(ApplicationProvider.scala:106)
     scala.Option.map(Option.scala:145)
     play.core.ReloadableApplication$$anonfun$get$1.apply(ApplicationProvider.scala:106)
     play.core.ReloadableApplication$$anonfun$get$1.apply(ApplicationProvider.scala:104)
     scala.util.Either$RightProjection.flatMap(Either.scala:523)
     play.core.ReloadableApplication.get(ApplicationProvider.scala:104)
     play.core.server.Server$class.sendHandler$1(Server.scala:56)
     play.core.server.Server$$anonfun$getHandlerFor$4.apply(Server.scala:88)
     play.core.server.Server$$anonfun$getHandlerFor$4.apply(Server.scala:87)
     scala.util.Either$RightProjection.flatMap(Either.scala:523)
     play.core.server.Server$class.getHandlerFor(Server.scala:87)
     play.core.server.NettyServer.getHandlerFor(NettyServer.scala:34)
     play.core.server.netty.PlayDefaultUpstreamHandler.messageReceived(PlayDefaultUpstreamHandler.scala:103)
     org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:75)
     org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:565)
     org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:793)
     org.jboss.netty.handler.codec.http.HttpContentDecoder.messageReceived(HttpContentDecoder.java:104)
     org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:75)
     org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:565)
     org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:793)
     org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:296)
     org.jboss.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:455)
     org.jboss.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:538)
     org.jboss.netty.handler.codec.replay.ReplayingDecoder.messageReceived(ReplayingDecoder.java:437)
     org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:75)
     org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:565)
     org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:560)
     org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:268)
     org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:255)
     org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:84)
     org.jboss.netty.channel.socket.nio.AbstractNioWorker.processSelectedKeys(AbstractNioWorker.java:472)
     org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:333)
     org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:35)
     org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:102)
     org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
     java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
     java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
     java.lang.Thread.run(Thread.java:722)

我在配置中正确配置了encryptionKeyManager设置（ebean.encryptKeyManager =“com.avaje.tests.basic.encrypt.BasicEncyptKeyManager”）。一切都很好，没有任何问题甚至警告。

我甚至尝试在项目中手动添加eBean 2.7.1作为依赖项无济于事。

知道这意味着什么以及为什么我会收到此错误？

Answer 1

我相信我可能已经解决了这个问题，但是以非常迂回的方式解决了这个问题。问题是，Play Framework无法解析EBean包中的BasicEncryptKeyManager类。我在查看完整的堆栈跟踪时发现了这一点，因为我看到消息“No EncryptKeyManager defined”，即使我在设置文件中明确指定了它（application.conf，ebean.conf，ebean.properties - 你的名字它，我试过它）根据官方文档。

所以，我必须使用 ServerConfigStartup 从头开始创建我自己的（请注意，这只是一个快速而肮脏的例子，可能不是最安全或最有效的方法）它）：

package models;
import com.avaje.ebean.config.ServerConfig;     
import com.avaje.ebean.event.ServerConfigStartup;     
import com.avaje.ebean.config.EncryptKey;       
import com.avaje.ebean.config.EncryptKeyManager; 

public class CustomServerConfigStartup implements ServerConfigStartup { 

    @Override 
    public void onStart(ServerConfig serverConfig) {     
          serverConfig.setEncryptKeyManager(new BasicEncryptKeyManager());     
    }     
} 

class BasicEncryptKeyManager implements EncryptKeyManager{ 

 @Override 
 public EncryptKey getEncryptKey(String tableName, String columnName) {     
       return new CustomEncryptKey(tableName, columnName);     
 } 

 @Override 
 public void initialise() { 
     //Do nothing (yet)
 } 

} 

class CustomEncryptKey implements EncryptKey{ 

   private String tableName;

   private String columnName;

   public CustomEncryptKey(String tableName, String columnName){
      this.tableName = tableName;
      this.columnName = columnName;
   }

 @Override 
 public String getStringValue() {     
        return play.Configuration.root().getString("application.secret") + "::" + this.tableName + "::" + this.columnName;      
 }     
}

然后在Play应用程序的conf目录中的 application.conf 或 ebean.properties 文件中（此步骤可能是多余的）：

ebean.encryptKeyManager="models.BasicEncryptKeyManager"

这似乎解决了@Encrypted注释错误。 Play似乎必须在未来某个版本的Ebean实际框架中包含一个可访问的EncryptionKeyManager类，以避免这种解决方法。

Play Framework 2.1（Java）eBean @Encrypted Annotation Errors

1 个答案: