JavaTapestry和Hibernate：在EntityManager上调用persist不会提交到数据库

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我正在尝试使用JBoss和Hibernate设置一个web应用程序，但无法运行SQL数据库。当我持久化一个对象并立即调用contains（）时，返回true，但当我在另一个方法中查找该对象时，我的数据库就是空的

我的坚持。xml:

<?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="facePlace">
<non-jta-data-source>java:jboss/facePlace</non-jta-data-source>
<class>webtech2.faceplace.entities.Person</class>
<properties>
  <property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect"/>
  <property name="hibernate.hbm2ddl.auto" value="update"/>
  <property name="hibernate.format_sql" value="true"/>
  <property name="hibernate.show_sql" value="true"/>
</properties>

有关守则：

@Inject
@Persistence
EntityManager em;

public boolean signUp(String name,
      String password,
      String repeatPassword,
      Date birthdate,
      String gender) {
if (!password.equals(repeatPassword)) {
  return false;
}

log.info("person data: " + name + " " + password + " " + repeatPassword + " " + birthdate.toString() + " " + gender);

String saltedPassword = hashText + password;
String hashedPassword = generateHash(saltedPassword);
Person xperson = new Person(name, hashedPassword, birthdate, gender);
em.persist(xperson);
return true;
}

我尝试在这里添加@CommitAfter，结果出现了相同的错误，还调用了getTransaction。begin（）和getTransaction。提交（）导致什么

java.sql.SQLException: You cannot commit during a managed transaction!

我的实体是：

@Entity
public class Person implements Serializable {

private String name;
private Date birthdate;
private long id;
private String password;
private String gender;
private Set<Person> friends;

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "id")
public long getId() {
  return id;
}

public void setId(long id) {
  this.id = id;
}

当我查看日志时，我注意到当我的第二个方法尝试访问EntityManager时出现的警告：

HHH000436: Entity manager factory name (facePlace) is already registered.  If entity manager will be clustered or passivated, specify a unique value for property 'hibernate.ejb.entitymanager_factory_name'

这正常吗？我做错了什么

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JavaTapestry和Hibernate：在EntityManager上调用persist不会提交到数据库

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