标签：文件命名 oct config uil new xml文件 输入 net odi
总的概括，Hibernate是一个ORM的轻量级持久层框架，解决了对象和关系数据库中表的不匹配问题（阻抗不匹配）以及拥有开发代码不用去继承hibernate类或接口的优势（无侵入性）。hibernate框架实现使得开发人员可以避免反复地编写javajdbc部分代码，应用面向对象的思维操作关系型数据库。
1 package test.hibernate.pro; 2 3 public class Student { 4 int id; 5 int age; 6 String name; 7 int classid; 8 public int getId() { 9 return id; 10 } 11 public void setId(int id) { 12 this.id = id; 13 } 14 public int getAge() { 15 return age; 16 } 17 public void setAge(int age) { 18 this.age = age; 19 } 20 public String getName() { 21 return name; 22 } 23 public void setName(String name) { 24 this.name = name; 25 } 26 public int getClassid() { 27 return classid; 28 } 29 public void setClassid(int classid) { 30 this.classid = classid; 31 } 32 }
3.使用MysqlGUI工具或cmd窗口建表(也可使用hibernate的SchemaExport方法自动生成表结构)。这里使用cmd窗口，进入mysql文件夹下lib目录输入mysql –hlocalhost –u root –p，之后Enter Password进入数据库create建表
4.在pro包下建*.hbm.xml文件导入头文件，完成object与表结构的映射关系
1 <?xml version="1.0" encoding="utf-8" ?> 2 <!DOCTYPE hibernate-mapping PUBLIC 3 "-//Hibernate/Hibernate Mapping DTD 3.0//EN" 4 "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> 5 <hibernate-mapping> 6 <class name="test.hibernate.pro.Student" table="student"> 7 <!-- name值为对象属性名，column值为相应列名 ，相互对应 --> 8 <id name="id" column="stu_id"> 9 <!-- 主键生成策略 --> 10 <generator class="native"></generator> 11 </id> 12 <!-- 实体类属性 --> 13 <property name="age" column="stu_age"></property> 14 <property name="name" column="stu_name"></property> 15 <property name="classid" column="stu_classid"></property> 16 </class> 17 </hibernate-mapping>
5.配置hibernate.cfg.xml文件
1 <?xml version="1.0" encoding="utf-8" ?> 2 <!DOCTYPE hibernate-configuration PUBLIC 3 "-//Hibernate/Hibernate Configuration DTD 3.0//EN" 4 "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"> 5 6 <hibernate-configuration> 7 <session-factory> 8 <!-- 配置资源信息 --> 9 <!-- mysql默认端口号为3306 --> 10 <property name="myeclipse.connection.profile">com.mysql.jdbc.Driver</property> 11 <property name="connection.driver_class">com.mysql.jdbc.Driver</property> 12 <property name="connection.url">jdbc:mysql://localhost:3306/hibernate</property> 13 <property name="connection.username">root</property> 14 <property name="connection.password">123456</property> 15 <property name="format_sql">true</property> 16 <property name="show_sql">true</property> 17 18 <!-- 数据库方言 --> 19 <property name="dialect">org.hibernate.dialect.MySQLDialect</property> 20 21 <!-- 注册调用*。hbm.xml文件 --> 22 <mapping resource="test/hibernate/pro/Student.hbm.xml"></mapping> 23 </session-factory> 24 </hibernate-configuration>
6.运行test包下test.java测试
1 package test.hibernate.test; 2 3 import org.hibernate.Session; 4 import org.hibernate.SessionFactory; 5 import org.hibernate.Transaction; 6 import org.hibernate.cfg.Configuration; 7 8 import test.hibernate.pro.Student; 9 10 public class test { 11 public static void main(String[] args) { 12 Configuration cfg = new Configuration().configure(); 13 14 // hibernate3.5写法 15 SessionFactory sf = cfg.buildSessionFactory(); 16 // hibernate4.0 -hibernate4.2 写法 17 // ServiceRegistry reg = new 18 // ServiceRegistryBuilder().applySettings(cfg.getProperties()) 19 // .buildServiceRegistry(); 20 // hibernate4.3 写法 21 // ServiceRegistry reg = new 22 // StandardServiceRegistryBuilder().applySettings(cfg.getProperties()) 23 // .build(); 24 // SessionFactory sf = cfg.buildSessionFactory(reg); 25 26 Session session = null; 27 Transaction ta = null; 28 try { 29 session = sf.openSession(); 30 ta = session.beginTransaction(); 31 32 Student stu = new Student(); 33 stu.setAge(17); 34 stu.setName("Neo"); 35 stu.setClassid(2); 36 session.save(stu); 37 38 ta.commit(); 39 } catch (Exception e) { 40 e.printStackTrace(); 41 if (ta != null) { 42 ta.rollback(); 43 } 44 } finally { 45 if (session != null && session.isOpen()) { 46 session.close(); 47 } 48 } 49 } 50 }
1.新建java web项目，src目录下建pro,factory,dao,test包
2.打开任务栏window -> Show View -> DB Browser，导入mysqljar包新建mysql jdbc Driver。右键项目 -> MyEclipse -> ProjectFacets -> Install Hibernate Facet创建hibernate.cfg.xml及SessionFactory文件命名为SF.java
3.DB Browser中右键表结构Hibernate Reverse Engineering反向生成实体类到pro包，选项三个勾一个点，选择主键增长策略，实例中选择native（默认为native）
4.dao包中创建dao层类
1 package test.hibernate.dao; 2 3 import org.hibernate.Session; 4 import org.hibernate.Transaction; 5 6 import test.hibernate.factory.SF; 7 import test.hibernate.pro.Student; 8 9 public class StudentDao { 10 Session session = null; 11 Transaction ta = null; 12 13 public void addStudent(Student stu) { 14 try { 15 session = SF.getSession(); 16 ta = session.beginTransaction(); 17 session.save(stu); 18 ta.commit(); 19 } catch (Exception e) { 20 e.printStackTrace(); 21 if (ta != null) 22 ta.rollback(); 23 } finally { 24 if (session != null) 25 session.close(); 26 } 27 } 28 }
5.test包中创建test测试类测试
1 package test.hibernate.test; 2 3 import test.hibernate.dao.StudentDao; 4 import test.hibernate.pro.Student; 5 6 public class Test { 7 public static void main(String[] args) { 8 StudentDao sd = new StudentDao(); 9 10 Student stu = new Student(); 11 stu.setStuAge(19); 12 stu.setStuName("Mike"); 13 stu.setStuClassid(1); 14 15 sd.addStudent(stu); 16 } 17 }
标签：文件命名 oct config uil new xml文件 输入 net odi
原文地址：http://www.cnblogs.com/babycoder/p/7560226.html
