eclipse3.2下解决数据插入mysql数据库时乱码无法插入问题(Hibernate)

/**
 *
 */
package hibernate.ch06;

import hibernate.HibernateSessionFactory;

import org.hibernate.Session;
import org.hibernate.Transaction;

/**
 * @author Administrator
 *
 */
public class InsertData {

 /**
  * @param args
  */
 public static void main(String[] args) {
  Session session = HibernateSessionFactory.currentSession();
  Transaction tx = null;
  Student s = new Student();
  s.setSno(1);
  s.setSage(19);
  s.setSname("Student");
  s.setSdept("数学");
  s.setSaddress("湖南省");
  s.setSsex("男");
  
  try{
   tx = session.beginTransaction();
   Integer id = (Integer)session.save(s);
   System.out.println("id:" + id); 
   tx.commit();
  }catch(Exception se){
   tx.rollback();
   se.printStackTrace();
  }finally{
   HibernateSessionFactory.closeSession();
  }  

 }

}

如果就这样插入，在eclipse3.2中会报错：

2009-2-28 23:16:16 org.hibernate.util.JDBCExceptionReporter logExceptions
警告: SQL Error: 1366, SQLState: HY000
2009-2-28 23:16:16 org.hibernate.util.JDBCExceptionReporter logExceptions
严重: Incorrect string value: '/xCA/xFD/xD1/xA7' for column 'Sdept' at row 1
org.hibernate.exception.GenericJDBCException: could not insert: [hibernate.ch06.Student]
 at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:91)
 at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:79)
 at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
 at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:1986)
 at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2405)
 at org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:37)
 at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:243)
 at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:269)
 at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:167)
 at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:101)
 at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:186)
 at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
 at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:175)
 at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
 at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
 at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:559)
 at org.hibernate.impl.SessionImpl.save(SessionImpl.java:547)
 at org.hibernate.impl.SessionImpl.save(SessionImpl.java:543)
 at hibernate.ch06.InsertData.main(InsertData.java:33)
Caused by: java.sql.SQLException: Incorrect string value: '/xCA/xFD/xD1/xA7' for column 'Sdept' at row 1
 at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2901)
 at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1584)
 at com.mysql.jdbc.Connection.serverExecute(Connection.java:4742)
 at com.mysql.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedStatement.java:1251)
 at com.mysql.jdbc.ServerPreparedStatement.executeInternal(ServerPreparedStatement.java:993)
 at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1930)
 at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1855)
 at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1693)
 at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:1968)
 ... 15 more

为什么会出现这样的情况呢，原来在hibernate.cfg.xml文件中， 已经设置：

<property name="connection.characterEncoding">gb2312</property>

而在eclipse中，所有字符都是默认为utf-8，所以在插入时mysql会报异常字符错误。有一个比较简便的方法，可以方便程序员在测试时可以随时修改，就是在做测试时把上面的属性改为utf-8。当在Web情况下时，jsp页面可以是GBK或GB2312，在布署时再把上面的属性改为gb2312或gbk.

 

<?xml version='1.0' encoding='gb2312'?>
<!DOCTYPE hibernate-configuration PUBLIC
          "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
          "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
<session-factory>
 <!--配置数据库驱动-->
 <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
 <!--配置数据库网络连接的url-->
 <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/mysql</property>
 <!--配置数据库网络连接的用户名，默认一般为root-->
 <property name="hibernate.connection.username">root</property>
 <!--配置数据库网络连接的密码-->
 <property name="hibernate.connection.password">mysql</property>
 <!--配置数据库网络连接池的大小-->
 <property name="hibernate.connection.pool.size">20</property>
 <!--后台是否显示sql，开发时为true，运行时为false-->
 <property name="hibernate.show_sql">true</property>
 <!-- 设置JDBC的隔离级别-->
 <property name="hibernate.connection.isolation">2</property>
 <property name="hibernate.format_sql">true</property>
 <!-- <property name="jdbc.fetch_size">50</property>  -->
 <property name="jdbc.batch_size">25</property>
 <property name="jdbc.use_scrollable_resultset">true</property>
 <property name="connection.useUnicode">false</property>
 <!--编码方式，最好是gbk，用gb2312有的字符不全-->
 <property name="connection.characterEncoding">gb2312</property>
 <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
 <property name="hibernate.cache.provider_class">org.hibernate.cache.EhCacheProvider</property>
 <mapping resource="hibernate/ch01/UserInfo.hbm.xml" />
 <mapping resource="hibernate/ch06/Student.hbm.xml" />
 <mapping resource="hibernate/ch06/Course.hbm.xml" /> 
 <mapping resource="hibernate/ch06/SC.hbm.xml" />
</session-factory>
</hibernate-configuration>