Hibernate之一环境筹建

hibernate.cfg.xml 

<?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> <!-- 方言 --> <property name="dialect">org.hibernate.dialect.MySQLDialect</property> <!-- 数据库连接 --> <property name="connection.url">jdbc:mysql://localhost:3306/数据库名称</property> <!-- 数据库连接用户名 --> <property name="connection.username">root</property> <!-- 数据库连接密码 --> <property name="connection.password">root</property> <!-- 数据库驱动 --> <property name="connection.driver_class">com.mysql.jdbc.Driver</property> <!-- 打印SQL语句 --> <property name="show_sql">true</property> <!-- 自动建表 --> <property name="hibernate.hbm2ddl.auto">update</property> <!-- 映射文件 --> <mapping resource="com/tgb/User.hbm.xml"/> </session-factory> </hibernate-configuration>
实体类User.java 
package com.tgb.hibernate; import java.util.Date; public class User { private String id; private String name; private String password; private Date createTime; private Date expireTime; public String getId() { return id; } public void setId(String id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public Date getCreateTime() { return createTime; } public void setCreateTime(Date createTime) { this.createTime = createTime; } public Date getExpireTime() { return expireTime; } public void setExpireTime(Date expireTime) { this.expireTime = expireTime; } } 映射文件User.hbm.xml 
<?xml version="1.0"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping> <class name="com.tgb.hibernate.User"> <id name="id"> <generator class="uuid"/> </id> <property name="name"/> <property name="password"/> <property name="createTime"/> <property name="expireTime"/> </class> </hibernate-mapping> 编写测试类Client.java 
package com.tgb.hibernate; import java.util.Date; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; public class Client { public static void main(String[] args) { //读取hibernate.cfg.xml文件 Configuration cfg = new Configuration().configure(); //创建SessionFactory SessionFactory factory = cfg.buildSessionFactory(); Session session = null; try { session = factory.openSession(); //开启事务 session.beginTransaction(); User user = new User(); user.setName("张三"); user.setPassword("123"); user.setCreateTime(new Date()); user.setExpireTime(new Date()); //保存数据 session.save(user); //提交事务 session.getTransaction().commit(); }catch(Exception e) { e.printStackTrace(); //回滚事务 session.getTransaction().rollback(); }finally { if (session != null) { if (session.isOpen()) { //关闭session session.close(); } } } } }

3楼lfmilaoshi15小时前

文尾的总结。。。。米老师

2楼StubbornPotatoes23小时前

总结，二蛋。

1楼liushuijinger昨天 23:39

沙发啊 顶