[size=small]
数据库里面就一张表person，id & name字段，个人感觉没有错，可是就是有问题。代码如下：
[code="java"]

jdbc:mysql://localhost:3306/helloword

root
admin

com.mysql.jdbc.Driver

org.hibernate.dialect.MySQLDialect

mysql

    <mapping resource="com/dlcity/hibernate/helloHibernate/Person.hbm.xml" />
    <mapping class="com.dlcity.hibernate.helloHibernate.Person" />

[/code]

[code="java"]
public class PersonOperate {
private Session session = null;

public PersonOperate(){
    //找到hibernate配置
    Configuration config = new Configuration().configure();
    //从配置中找出SessionFactory
    SessionFactory sessions = config.buildSessionFactory();
    //打开session
    this.session = sessions.openSession();
}

public void insert(Person p){
    //开始事务
    Transaction tran = this.session.beginTransaction();
    //执行操作
    this.session.save(p);
    //提交事务
    tran.commit();
}

}[/code]

[code="java"]
public class TestPO {
public static void main(String[] args){

    Person p = new Person();
    p.setId(3);
    p.setName("testpo");

    PersonOperate po = new PersonOperate();

    po.insert(p);
}

}[/code]
[code="java"]

[/code]
异常如下：
[code="java"]
log4j:WARN No appenders could be found for logger (org.hibernate.cfg.Environment).
log4j:WARN Please initialize the log4j system properly.
Exception in thread "main" org.hibernate.MappingException: An AnnotationConfiguration instance is required to use
at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1692)
at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1647)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1626)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1600)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1520)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1506)
at com.dlcity.hibernate.helloHibernate.PersonOperate.(PersonOperate.java:25)
at com.dlcity.hibernate.helloHibernate.TestPO.main(TestPO.java:10)
[/code]

[/size]

MyEclipse安装异常

忘O了

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