初次学习hibernate，第一个程序，用的是XML配置文件
准备工作：下载hibernate的JAR包，我下的是当前最新的4.2.3，SQL的数据库驱动文件SQLJDBC，导入上述架包。
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" alt="" />
至此准备工作OK。
步骤：
1：定义一个类，这个类的属性，就是你要存放到数据库中的内容。当然有些属性可以不存入，这些还需要配置文件来决定。
我的类的定义：
package com.hibernate.model;
import java.util.Date;
public class Log {
public Log()
{
this.OperateTime = new Date();
}
private int Id ;
private int Version;
private int VersionHelper;
private String OperateType;
private Date OperateTime ;
private String Operater ;
private String DetailOperate ;
private Boolean Success;
private String FailInfo ;
public int getId() {
return Id;
}
public void setId(int id) {
Id = id;
}
public int getVersion() {
return Version;
}
public void setVersion(int version) {
Version = version;
}
public int getVersionHelper() {
return VersionHelper;
}
public void setVersionHelper(int versionHelper) {
VersionHelper = versionHelper;
}
public String getOperateType() {
return OperateType;
}
public void setOperateType(String operateType) {
OperateType = operateType;
}
public Date getOperateTime() {
return OperateTime;
}
public void setOperateTime(Date operateTime) {
OperateTime = operateTime;
}
public String getOperater() {
return Operater;
}
public void setOperater(String operater) {
Operater = operater;
}
public String getDetailOperate() {
return DetailOperate;
}
public void setDetailOperate(String detailOperate) {
DetailOperate = detailOperate;
}
public Boolean getSuccess() {
return Success;
}
public void setSuccess(Boolean success) {
Success = success;
}
public String getFailInfo() {
return FailInfo;
}
public void setFailInfo(String failInfo) {
FailInfo = failInfo;
}
}
2：配置这个类的的映射文件。Log.hbm.xml
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com.hibernate.model">
<class name="Log" table="WMS.Log">
<id name="Id" column="Id">
</id>
<property name="Version" column="Version" type="int" not-null="true"></property> <property name="VersionHelper" column="VersionHelper" type="int" not-null="true"></property> <property name="OperateType" column="OperateType" type="string"/> <property name="OperateTime" column="OperateTime" /> <property name="Operater" column="Operater" type="string"/> <property name="DetailOperate" column="DetailOperate" type="string"/>
<property name="Success" column="Success" type="boolean"/>
<property name="FailInfo" column="FailInfo" type="string"/> </class>
</hibernate-mapping>
配置文件的时候，里面的name是类中对应属性的名字，而column是这个属性对应数据库中的列，一般情况下基本相同，方便理解.
后面的TYPE，是属性对应的类型，如果不写的话，那么会自动识别。
3：配置hibernate.cfg.xml文件，所有这些文件的位置在上图中都有显示，这个配置文件要放在项目根目录下。
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration >
<session-factory>
<property name="connection.driver_class">com.microsoft.sqlserver.jdbc.SQLServerDriver</property>
<property name="connection.url">jdbc:sqlserver://127.0.0.1:1433;databaseName=wms_meide</property>
<property name="connection.username">sa</property>
<property name="connection.password">123456</property> <property name="show_sqlserver">true</property> <mapping resource="com/hibernate/model/Log.hbm.xml" /> </session-factory>
</hibernate-configuration>
其中mapping配置，是要映射类的映射文件所在的地方。
到此所有的配置工作已经完成。
写一个单元测试：
public static void main(String[] args)
{ Log log=new Log();
log.setId(1111);
log.setOperater("gjf");
log.setOperateType("ccc");
log.setVersionHelper(1);
log.setVersion(2);
log.setSuccess(true); Configuration cfg=new Configuration();
// cfg.configure("/hibernate.cfg.xml"); @SuppressWarnings("deprecation")
SessionFactory sf=cfg.configure().buildSessionFactory();//这个方法已经过时，但是还是可以用
Session session=sf.openSession();//得到session
session.beginTransaction();//开启事务
session.save(log);//保存到数据库
session.getTransaction().commit();//提交事务，如果事务出现问题，那么保存会失败
session.close();
sf.close(); }
第一个hibernate已经写好并成功运行。
期间出现的问题：
1：无法解析hibernate.cfg.xml文件。
解决方法：这个问题主要是XML文件书写有误，导致格式不正确。将其用浏览器打开，如果不报错则说明已经OK。如果报错，按照提示，解决问题！
2：写入数据库的时候，无法执行SQL语句，
可能是因为配置文件时的格式和数据库格式不一致，将配置文件中的TYPE删除即可。