使用Hibernate JPA和Postgres来玩2.2 [英] Play 2.2 with Hibernate JPA and Postgres

问题描述

我试图让一个Play 2.2项目与Hibernate JPA和一个PostgreSQL数据库一起工作。我之前使用Play 2.1.1完成了它的工作。我现在得到以下错误：

pre $ play.api.UnexpectedException：意外的异常[NoClassDefFoundError：org / w3c / dom / ElementTraversal]
at play.core.ReloadableApplication $$ anonfun $ get $ 1 $$ anonfun $ apply $ 1 $$ anonfun $ 1.apply（ApplicationProvider.scala：152）〜[play_2.10.jar：2.2.0]


我不知道这是从哪里来的。我的build.sbt看起来像这样：
$ b

libraryDependencies ++ = Seq（
javaJdbc ，
缓存，
javaJpa，
org.apache.directory.api％apache-ldap-api％1.0.0-M14，
postgresql ％postgresql％9.1-901-1.jdbc4，
org.hibernate％hibernate-core％4.2.3.Final，
org.hibernate％ hibernate-entitymanager％4.2.3.Final
）


和我的持久性。 xml是这样的：

 < persistence xmlns =http://java.sun.com / xml / ns / persistence
 xmlns：xsi =http://www.w3.org/2001/XMLSchema-instance
 xsi：schemaLocation =http://java.sun.com / xml / ns / persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd
 version =2.0> 
 
< persistence-unit name =defaultPersistenceUnit
 transaction-type =RESOURCE_LOCAL> 
< provider> org.hibernate.ejb.HibernatePersistence< / provider> 
<非-jta-data-source> DefaultDS< /非-jta-data-source> 
<属性> 
< property name =hibernate.dialectvalue =org.hibernate.dialect.PostgreSQLDialect/> 
< property name =hibernate.hbm2ddl.autovalue =update/> 
< / properties> 
< / persistence-unit> 
  

我还没有写过代码，但我只是配置它。

解决方案

好的，我自己想清楚了。这确实是两个版本的xml-apis的问题。一个来自Play本身，另一个来自Apache Directory API。我改变了build.sbt中的artefact并且它现在正在工作：

 org.apache.directory.api％ api-all％1.0.0-M14
  

I'm trying to get a Play 2.2 project to work with Hibernate JPA and a PostgreSQL database. I did it before with Play 2.1.1, where it worked perfectly. I get the following error now:

play.api.UnexpectedException: Unexpected exception[NoClassDefFoundError: org/w3c/dom/ElementTraversal]
    at play.core.ReloadableApplication$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(ApplicationProvider.scala:152) ~[play_2.10.jar:2.2.0]

I have no idea where this comes from. My build.sbt looks like this:

libraryDependencies ++= Seq(
  javaJdbc,
  cache,
  javaJpa,
  "org.apache.directory.api" % "apache-ldap-api" % "1.0.0-M14",
  "postgresql" % "postgresql" % "9.1-901-1.jdbc4",
  "org.hibernate" % "hibernate-core" % "4.2.3.Final",
  "org.hibernate" % "hibernate-entitymanager" % "4.2.3.Final"
)    

And my persistence.xml like this:

<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">

<persistence-unit name="defaultPersistenceUnit"
    transaction-type="RESOURCE_LOCAL">
    <provider>org.hibernate.ejb.HibernatePersistence</provider>
    <non-jta-data-source>DefaultDS</non-jta-data-source>
    <properties>
        <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect" />
        <property name="hibernate.hbm2ddl.auto" value="update" />
    </properties>
</persistence-unit>

I haven't written any code yet, I just configured it.

解决方案

Ok, figured it out by myself. It was indeed a problem with two versions of xml-apis. One coming from Play itself and one from the Apache Directory API. I changed the artefact in the build.sbt to and it is working now:

  "org.apache.directory.api" % "api-all" % "1.0.0-M14"

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