2
其实我已经创建了用于创建在MySQL数据库表的实体Bean，一切都用entityfactory工作的罚款与事务类。数据未插入到数据库JPA + Hibernate的
现在我需要这个功能......当我在部署应用程序的EAR文件断绝JBOSS..it必须检查是否有表在数据库或not..if他们不present..it有现有创建表automatically..of当然，我已经指定在persistence.xml..but此功能hibernate.hbm2ddl.auto =更新仍然没有创造它不存在于数据库中的任何表，而不是抛出任何错误也当过我运行应用服务器创建它的唯一的MySQL默认tables..but不发达国家和我在这里给我的代码：
package com.ernst.persistenceImpl.beanImpl;
import com.ernst.persistenceAPI.beanAPI.NrKreiseBeanAPI;
import com.ernst.persistenceAPI.localBeanAPI.NrKreiseLocalBeanAPI;
import com.ernst.persistenceAPI.remoteBeanAPI.NrKreiseRemoteBeanAPI;
import javax.persistence.Entity;
import javax.persistence.Table;
import javax.persistence.Id;
import javax.persistence.Basic;
import java.io.Serializable;
@Entity
@Table(name = "NR_KREISE")
public class NrKreiseBean implements NrKreiseBeanAPI, NrKreiseLocalBeanAPI,
NrKreiseRemoteBeanAPI, Serializable {
@Id
private int nr_kreise_id;
@Basic
private int fk_nr_typ;
@Basic
private int data_ref_von;
@Basic
private int data_ref_bis;
@Basic
private int data_ref;
@Basic
private int msg_ref_von;
@Basic
private int msg_ref_bis;
@Basic
private int msg_ref;
@Basic
private String desc;
public int getNr_kreise_id() {
return nr_kreise_id;
}
public void setNr_kreise_id(int nr_kreise_id) {
this.nr_kreise_id = nr_kreise_id;
}
public int getFk_nr_typ() {
return fk_nr_typ;
}
public void setFk_nr_typ(int fk_nr_typ) {
this.fk_nr_typ = fk_nr_typ;
}
public int getData_ref_von() {
return data_ref_von;
}
public void setData_ref_von(int data_ref_von) {
this.data_ref_von = data_ref_von;
}
public int getData_ref_bis() {
return data_ref_bis;
}
public void setData_ref_bis(int data_ref_bis) {
this.data_ref_bis = data_ref_bis;
}
public int getData_ref() {
return data_ref;
}
public void setData_ref(int data_ref) {
this.data_ref = data_ref;
}
public int getMsg_ref_von() {
return msg_ref_von;
}
public void setMsg_ref_von(int msg_ref_von) {
this.msg_ref_von = msg_ref_von;
}
public int getMsg_ref_bis() {
return msg_ref_bis;
}
public void setMsg_ref_bis(int msg_ref_bis) {
this.msg_ref_bis = msg_ref_bis;
}
public int getMsg_ref() {
return msg_ref;
}
public void setMsg_ref(int msg_ref) {
this.msg_ref = msg_ref;
}
public String getDesc() {
return desc;
}
public void setDesc(String desc) {
this.desc = desc;
}
}
persistence.xml文件：
<?xml version="1.0" encoding="UTF-8"?>
<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_1_0.xsd"
version="1.0">
<persistence-unit name="DefaultDS" transaction-type="JTA">
<jta-data-source>java:/DefaultDS</jta-data-source>
<class>com.ernst.persistenceImpl.beanImpl.NrKreiseBean</class>
<properties>
<property name="jboss.entity.manager.factory.jndi.name"
value="persistence-units/DefaultDS" />
<property name="hibernate.ejb.cfgfile"
value="WEB-INF.classes.META-INF.hibernate.cfg.xml" />
<property name="hibernate.dialect"
value="org.hibernate.dialect.MySQLDialect" />
<property name="hibernate.connection.driver_class"
value="com.mysql.jdbc.Driver" />
<property name="hibernate.connection.url"
value="jdbc:mysql://localhost:3306/lagerstandnew" />
<property name="hibernate.connection.username" value="root" />
<property name="hibernate.connection.password" value="sekhar" />
<!-- Scan for annotated classes and Hibernate mapping XML files -->
<property name="hibernate.archive.autodetection"
value="class, hbm" />
<property name="hibernate.hbm2ddl.auto"
value="create" />
<!-- SQL stdout logging -->
<property name="hibernate.format_sql" value="true" />
<property name="hibernate.show_sql" value="true" />
<property name="use_sql_comments" value="true" />
</properties>
</persistence-unit>
</persistence>
任何一个可以请给我一个想法如何做到这一点还是请告诉我，如果我做错了什么在上面的文件。
在此先感谢。
最好的问候， 拉贾。
+1的第一个答案 – willcodejavaforfood 2010-11-10 14:45:54
但在这里lagerstandnew..but命名不是必需的表数据库及其创建的默认表。 – user503285 2010-11-11 13:31:11