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我試圖設置一個使用JBoss和Hibernate的Web應用程序，但我無法讓SQL數據庫運行。當我堅持一個對象，並立即調用contains（）返回true，但是當我在另一個方法中查找這個對象時，我的數據庫只是空的。掛毯和休眠：調用堅持EntityManager不承諾數據庫
我的persistence.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>
相關的代碼：
@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;
}
我想在這裏加入@CommitAfter，導致同樣的錯誤，以及調用getTransaction .begin（）和getTransaction.commit（）是什麼導致
java.sql.SQLException: You cannot commit during a managed transaction!
我的實體是：
@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;
}
當IM看到通過日誌，我注意到這樣的警告，當我的第二個方法試圖訪問EntityManager的發生：
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'
這是正常的嗎？我究竟做錯了什麼？