我最近开始从事相关的 JBoss EAR、WAR 和 EJB 项目（JBoss 7.7.1）。开发人员使用 Eclipse 进行开发，我们通过 Eclipse 启动 JBoss 和调试。
我可以毫无问题地在 Eclipse/JBoss 中启动我们的 webapp。
鉴于我们根本没有测试，我决定开始建立一个测试环境，最初只是为了测试 EJB 项目。但是在尝试启动测试时，我在配置方面遇到了很多困难（我已经看过所有类似的问题，但没有任何东西对我有用）。
项目结构如下：
ccc-ejb/
src/
ccc/
<packages and classes under here>
META-INF/persistence.xml
test/
ccc/
<packages and classes under here>
TestDatabase.java
只是为了完整性（即使该文件仍未被读取），我的 persistence.xml 文件如下所示：
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" 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">
<persistence-unit name="ccc">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>java:jboss/datasource/ccc-ds</jta-data-source>
<class>ccc.User</class>
<properties>
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
<property name="hibernate.hbm2ddl.auto" value="create"/>
</properties>
</persistence-unit>
作为获得测试环境设置的开始，我有以下测试类只是为了检查环境：
public class TestDatabase {
public static void main(String[] args) {
try {
System.out.println(System.getProperty("java.class.path"));
System.out.println(System.class.getResource("META-INF/persistence.xml"));
System.out.println(Class.forName("org.hibernate.ejb.HibernatePersistence"));
EntityManagerFactory entityManagerFactory = Persistence.createEntityManagerFactory("ccc");
EntityManager entityManager = entityManagerFactory.createEntityManager();
entityManager.close();
entityManagerFactory.close();
} catch (Throwable t) {
System.out.println(t);
}
}
}
这个的输出是：
/usr/local/jboss-7.1.1-final/modules/org/hibernate/main/hibernate-entitymanager-4.0.1.Final.jar:/Development/workspace-ccc-dev/ccc-ejb/build/classes:/Development/workspace-ccc-dev/ccc-ejb/lib/json_simple-1.1.jar:/usr/local/jboss-7.1.1-final/modules/javax/activation/api/main/activation-1.1.1.jar:/usr/local/jboss-7.1.1-final/modules/javax/annotation/api/main/jboss-annotations-api_1.1_spec-1.0.0.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/ejb/api/main/jboss-ejb-api_3.1_spec-1.0.1.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/el/api/main/jboss-el-api_2.2_spec-1.0.0.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/enterprise/api/main/cdi-api-1.0-SP4.jar:/usr/local/jboss-7.1.1-final/modules/javax/enterprise/deploy/api/main/jboss-jad-api_1.2_spec-1.0.0.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/faces/api/main/jboss-jsf-api_2.1_spec-2.0.1.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/inject/api/main/javax.inject-1.jar:/usr/local/jboss-7.1.1-final/modules/javax/interceptor/api/main/jboss-interceptors-api_1.1_spec-1.0.0.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/jms/api/main/jboss-jms-api_1.1_spec-1.0.0.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/jws/api/main/jsr181-api-1.0-MR1.jar:/usr/local/jboss-7.1.1-final/modules/javax/mail/api/main/mail-1.4.4.jar:/usr/local/jboss-7.1.1-final/modules/javax/management/j2ee/api/main/jboss-j2eemgmt-api_1.1_spec-1.0.0.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/persistence/api/main/hibernate-jpa-2.0-api-1.0.1.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/resource/api/main/jboss-connector-api_1.6_spec-1.0.0.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/rmi/api/main/jboss-rmi-api_1.0_spec-1.0.4.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/security/auth/message/api/main/jboss-jaspi-api_1.0_spec-1.0.0.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/security/jacc/api/main/jboss-jacc-api_1.4_spec-1.0.1.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/servlet/api/main/jboss-servlet-api_3.0_spec-1.0.0.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/servlet/jsp/api/main/jboss-jsp-api_2.2_spec-1.0.0.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/servlet/jstl/api/main/jboss-jstl-api_1.2_spec-1.0.2.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/transaction/api/main/jboss-transaction-api_1.1_spec-1.0.0.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/validation/api/main/validation-api-1.0.0.GA.jar:/usr/local/jboss-7.1.1-final/modules/javax/ws/rs/api/main/jboss-jaxrs-api_1.1_spec-1.0.0.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/wsdl4j/api/main/wsdl4j-1.6.2.jar:/usr/local/jboss-7.1.1-final/modules/javax/xml/bind/api/main/jboss-jaxb-api_2.2_spec-1.0.3.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/xml/registry/api/main/jboss-jaxr-api_1.0_spec-1.0.1.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/xml/rpc/api/main/jboss-jaxrpc-api_1.1_spec-1.0.0.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/xml/soap/api/main/jboss-saaj-api_1.3_spec-1.0.1.Final.jar:/usr/local/jboss-7.1.1-final/modules/javax/xml/ws/api/main/jboss-jaxws-api_2.2_spec-2.0.0.Final.jar:/usr/local/jboss-7.1.1-final/modules/org/hibernate/validator/main/hibernate-validator-4.2.0.Final.jar:/usr/local/jboss-7.1.1-final/modules/org/picketbox/main/picketbox-4.0.7.Final.jar:/usr/local/jboss-7.1.1-final/modules/org/picketbox/main/picketbox-commons-1.0.0.final.jar:/usr/local/jboss-7.1.1-final/modules/org/picketbox/main/picketbox-infinispan-4.0.7.Final.jar:/usr/local/jboss-7.1.1-final/modules/org/jboss/as/controller-client/main/jboss-as-controller-client-7.1.1.Final.jar:/usr/local/jboss-7.1.1-final/modules/org/jboss/dmr/main/jboss-dmr-1.1.1.Final.jar:/usr/local/jboss-7.1.1-final/modules/org/jboss/logging/main/jboss-logging-3.1.0.GA.jar:/usr/local/jboss-7.1.1-final/modules/org/jboss/resteasy/resteasy-jaxb-provider/main/resteasy-jaxb-provider-2.3.2.Final-jandex.jar:/usr/local/jboss-7.1.1-final/modules/org/jboss/resteasy/resteasy-jaxb-provider/main/resteasy-jaxb-provider-2.3.2.Final.jar:/usr/local/jboss-7.1.1-final/modules/org/jboss/resteasy/resteasy-jaxrs/main/async-http-servlet-3.0-2.3.2.Final-jandex.jar:/usr/local/jboss-7.1.1-final/modules/org/jboss/resteasy/resteasy-jaxrs/main/async-http-servlet-3.0-2.3.2.Final.jar:/usr/local/jboss-7.1.1-final/modules/org/jboss/resteasy/resteasy-jaxrs/main/resteasy-jaxrs-2.3.2.Final-jandex.jar:/usr/local/jboss-7.1.1-final/modules/org/jboss/resteasy/resteasy-jaxrs/main/resteasy-jaxrs-2.3.2.Final.jar:/usr/local/jboss-7.1.1-final/modules/org/jboss/resteasy/resteasy-multipart-provider/main/resteasy-multipart-provider-2.3.2.Final-jandex.jar:/usr/local/jboss-7.1.1-final/modules/org/jboss/resteasy/resteasy-multipart-provider/main/resteasy-multipart-provider-2.3.2.Final.jar:/usr/local/jboss-7.1.1-final/modules/org/jboss/ejb3/main/jboss-ejb3-ext-api-2.0.0.jar
null
class org.hibernate.ejb.HibernatePersistence
java.lang.NoClassDefFoundError: org/hibernate/proxy/EntityNotFoundDelegate
问题：
- 该项目在 Eclipse 中配置为 EJB 项目，因此自动在构建路径上放置了许多 JBoss jar 和 JBoss 模块 jar（包括 Hibernate jar）。但是hibernate-entitymanager-4.0.1.Final.jar不是自动添加的，需要自己添加。如果我不手动添加它，那么将找不到 org.hibernate.ejb.HibernatePersistence。好奇为什么这个 jar 不像其他 jar 文件那样自动包含？
- persistence.xml 资源的输出为空？它没有被发现。我怎样才能解决这个问题？
当 Eclipse 构建时，它把所有的类都放在这里：
/Development/workspace-ccc-dev/ccc-ejb/build/classes
这个目录肯定在上面 println 输出的类路径上。此外，在类目录中，特别是我可以看到：
classes/ccc/TestDatabase.class
classes/META-INF/persistence.xml
为什么没有提取persistence.xml 文件？
- java.lang.NoClassDefFoundError: org/hibernate/proxy/EntityNotFoundDelegate 也不好看。当我修复 1 和 2 时，我会解决这个问题，但这里的任何提示也将不胜感激。
谢谢。