eclipse下配置hibernate用datasource连接数据库的问题.docx

eclipse下配置hibernate用datasource连接数据库的问题精彩对话：甲：我把hibernate.cfg.xml文件内容帖出来给大家看看： java:comp/env/jdbc/oradb org.hibernate.connection.DatasourceConnectionProvider org.hibernate.dialect.Oracle9Dialect true 运行时包错如下：log4j:WARN No appenders could be found for logger (org.hibernate.cfg.Environment).log4j:WARN Please initialize the log4j system .hibernate.HibernateException: Could not find datasource at org.hibernate.connection.DatasourceConnectionProvider.configure(DatasourceConnectionProvider.java:56) at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:124) at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:56) at org.hibernate.cfg.SettingsFactory.createConnectionProvider(SettingsFactory.java:414) at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:62) at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2009) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1292) at hibernate.demo01.PersonOperate.(PersonOperate.java:21) at hibernate.demo01.PersonTest.main(PersonTest.java:17)Caused by: javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file:java.naming.factory.initial at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:640) at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:243) at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:280) at javax.naming.InitialContext.lookup(InitialContext.java:347) at org.hibernate.connection.DatasourceConnectionProvider.configure(DatasourceConnectionProvider.java:52) . 8 moreException in thread main 甲：Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial这句话还要我配置个什么文件？哪位老大能给解决下？乙：Could not find datasource你datasource配好了吗？甲：ource配好了的，偶都测试过可以用的。javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial关键是这句话，到底还需要指定个什么映射？乙：你在你的main里面怎么可能得到那个datasource呢你的datasource怎么建的甲：就是配的server.xml和web.xml。难道还要单独写个去datasuorce的类么？楼上的说说具体怎么要怎么配？乙：你在运行什么东西的出错？甲：操作定义类：package hibernate.demo01;import java.util.Iterator;import java.util.List;import org.hibernate.*;import org.hibernate.cfg.Configuration;/* 具体操作Hibernate的类：* 增加、删除、修改、按ID查询、模糊查询、查询全部操作* */public class PersonOperate / 在Hibernate中，所有的操作都是通过Session完成 / 此Session不同于JSP的Session private Session session = null ; / 在构造方法之中实例化session对象 public PersonOperate() / 找到Hibernate配置 Configuration config = new Configuration().configure() ; / 从配置中取出SessionFactory SessionFactory factory = config.buildSessionFactory() ; / 从SessionFactory中取出一个Session this.session = factory.openSession() ; / 所有的操作都是通过session进行的 / 向数据库中增加数据 public void insert(Person p) / 开始事务 Transaction tran = this.session.beginTransaction() ; / 执行语句 this.session.save(p) ; / 提交事务 mit() ; / 关闭Session this.session.close() ; / 修改 public void update(Person p) / 开始事务 Transaction tran = this.session.beginTransaction() ; / 执行语句 this.session.update(p) ; / 提交事务 mit() ; this.session.close(); / 按ID查询：推荐使用HQL 是Hibernate官方推荐的查询语言 public Person queryById(String id) Person p = null ; / 使用Hibernate查询语言 String hql = FROM Person as p WHERE p.id=? ; / 通过Query接口查询 Query q = this.session.createQuery(hql) ; q.setString(0,id) ; List l = q.list() ; Iterator iter = l.iterator() ; if(iter.hasNext() p = (Person)iter.next() ; this.session.close(); return p ; / 删除数据 / Hibernate2、Hibernate 3通用的删除 / 使用此方法删除数据之前，必须先查找到数据对象，性能呢？ public void delete(Person p) Transaction tran = this.session.beginTransaction() ; / 执行语句 this.session.delete(p) ; / 提交事务 mit() ; this.session.close(); / 在Hibernate 3之中根据HQL中的语句进行了修改，增加了删除指令 public void delete(String id) String hql = DELETE Person WHERE id=? ; Query q = this.session.createQuery(hql) ; / 把参数设置 q.setString(0,id) ; / 执行更新语句 q.executeUpdate() ; / 进行事务处理 this.session.beginTransaction().commit() ; this.session.close(); / 查询全部数据，写HQL public List queryAll() List l = null ; String hql = FROM Person as p ; Query q = this.session.createQuery(hql) ; l = q.list() ; this.session.close(); return l ; / 模糊查询 public List queryByLike(String cond) List l = null ; String hql = FROM Person as p WHERE like ? ; Query q = this.session.createQuery(hql) ; q.setString(0,%+cond+% ; l = q.list() ; this.session.close(); return l ; 启动运行类：package hibernate.demo01;public class PersonTest /* * param args */ public static void main(String args) / TODO Auto-generated method stub Person p = new Person(); /p.setId(11; p.setName(你好; p.setPassword(123354; p.setSex(男; p.setEmail(123163.com; PersonOperate po=new PersonOperate(); po.insert(p); /po.update(p); /Person p = po.queryById(fz; /System.out.println(p.getName(); /po.delete(p); /* List l = po.queryByLike(11 ; Iterator iter = l.iterator() ; while(iter.hasNext() Person p = (Person)iter.next() ; System.out.println(p.getName() ; */ 还有个Person的持久类就不用说了吧。运行PersonTest 这个类的时候报的错，我在hibernate.cfg.xml里面配置JDBC直连数据库就么有问题。就是用datasource的时候报那个错。乙：果然和我想的那样。datasource在别人家里（web server）, 而你在你自己家里（main）找， 你说怎么找的到。甲：。那怎么弄的？老大说清楚点。org.h