hibernate annotaction 怎么会清空表中的数据？

如果服务器启动，那么表数据都会清空。

程序添删改查都没问题，列表数据也没问题，只是一启动服务器就会清空表中的数据。

请问这是怎么回事？

这是pojo类：

package com.game.products.model;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;

import org.hibernate.annotations.GenericGenerator;


@Entity
@Table(name="products")
public class Products {
	//	Fields 
	@Id
	@GeneratedValue(generator = "c-assigned")
	@GenericGenerator(name = "c-assigned", strategy = "assigned")
	@Column(name="game_id")
	private String gameId;//编号
	@Column(name="game_name_cn")
	private String gameNameCn;//中文名称
	@Column(name="game_name_en")
	private String gameNameEn;//英文名称
	@Column(name="game_capacity")
	private String gameCapacity;//碟数
	@Column(name="game_version")
	private String gameVersion;//版本
	@Column(name="game_media")
	private String gameMedia;//介质
	@Column(name="game_copyright")
	private String gameCopyright;//版权
	@Column(name="game_price")
	private String gamePrice;//价格
	@Column(name="game_content")
	private String gameContent;//攻略
	
	//	Constructors
	public Products(){}
	
	//	Property accessors
	
	public String getGameCapacity() {
		return gameCapacity;
	}

	public void setGameCapacity(String gameCapacity) {
		this.gameCapacity = gameCapacity;
	}

	
	public String getGameId() {
		return gameId;
	}

	public void setGameId(String gameId) {
		this.gameId = gameId;
	}
	
	
	public String getGameNameCn() {
		return gameNameCn;
	}

	public void setGameNameCn(String gameNameCn) {
		this.gameNameCn = gameNameCn;
	}

	
	public String getGameNameEn() {
		return gameNameEn;
	}

	public void setGameNameEn(String gameNameEn) {
		this.gameNameEn = gameNameEn;
	}

	
	public String getGameVersion() {
		return gameVersion;
	}

	public void setGameVersion(String gameVersion) {
		this.gameVersion = gameVersion;
	}

	
	public String getGameMedia() {
		return gameMedia;
	}

	public void setGameMedia(String gameMedia) {
		this.gameMedia = gameMedia;
	}

	
	public String getGameCopyright() {
		return gameCopyright;
	}

	public void setGameCopyright(String gameCopyright) {
		this.gameCopyright = gameCopyright;
	}

	
	public String getGameContent() {
		return gameContent;
	}

	public void setGameContent(String gameContent) {
		this.gameContent = gameContent;
	}

	
	public String getGamePrice() {
		return gamePrice;
	}

	public void setGamePrice(String gamePrice) {
		this.gamePrice = gamePrice;
	}

}

这是applicationContext.xml中的session配置：

<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
		<property name="dataSource" ref="dataSource"/>
		<property name="hibernateProperties">
			<props>
				 <prop key="hibernate.dialect">org.hibernate.dialect.SQLServerDialect</prop>
				 <prop key="hibernate.hbm2ddl.auto">create</prop>
			</props>
		</property>
		<property name="annotatedClasses">
			<list>
				<value>com.game.products.model.Products</value>
			</list>
		</property>
			
	</bean>

<prop key="hibernate.hbm2ddl.auto">create</prop>

create改为update或者none

问题就是这一句了

每一次重启，加载Hibernate配置文件后，都是重新生成一次数据库的schema。去掉就可以了。或改成update。

<prop key="hibernate.hbm2ddl.auto">create</prop>

这跟hibernate annotaction 没有关系

谢谢大家，问题解决了。