第一次使用hibernate

create database hibernate;

use hibernate;

create table hibernate(id int primary key,name varchar(20),age int);

public class Student {
    private int id;
    private String name;
    private int age;
    private String phoneNumber;
    
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    public String getPhoneNumber() {
        return phoneNumber;
    }
    public void setPhoneNumber(String phoneNumber) {
        this.phoneNumber = phoneNumber;
    }
}

 1 <?xml version="1.0"?>
 2 <!DOCTYPE hibernate-mapping PUBLIC
 3         "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
 4         "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
 5 
 6 <hibernate-mapping package="com.nenu.hibernate">
 7     <class name="Student" table="student">    <!--将实体类和数据库中的表关联,如果数据库的表明和实体类名一致,则可以省略table="表名"-->
 8         <id name="id" column="id"></id><!-- 指定主键 -->
 9         <property name="name" column="name"></property>    <!-- 属性之间的对应,如果属性名和列名一致,也可以省略column="列名"-->
10         <property name="age"></property>
11     </class>
12 </hibernate-mapping>

 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 
 8     <session-factory>
 9 
10         <!-- Database connection settings -->
11         <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
12         <property name="hibernate.connection.url">
13                <![CDATA[jdbc:mysql://localhost:3306/daycode?useUnicode=true&characterEncoding=utf8]]>        
14         </property>
15         <!-- 数据库地址 -->
16         <property name="connection.url">jdbc:mysql://localhost/hibernate</property>
17         <property name="connection.username">root</property>
18         <property name="connection.password">root</property>
19 
20         <!-- 数据库连接池 -->
21         <!-- JDBC connection pool (use the built-in) -->
22         <!-- <property name="connection.pool_size">1</property> -->
23 
24         <!-- SQL dialect SQL方言,如果使用其他数据库则需要修改方言,具体见手册-->
25         <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
26 
27         <!-- Enable Hibernate‘s automatic session context management -->
28         <!-- <property name="current_session_context_class">thread</property>  暂时用不上-->
29 
30         <!-- Disable the second-level cache 二级缓存不可见  二级缓存利于hibernate的优化-->
31         <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
32 
33         <!-- Echo all executed SQL to stdout -->
34         <property name="show_sql">true</property>
35 
36         <!-- Drop and re-create the database schema on startup hibernate自动生成建表语句-->
37         <property name="hbm2ddl.auto">update</property>
38 
39         <mapping resource="com/nenu/hibernate/Student.hbm.xml"/>
40         
41 
42     </session-factory>
43 
44 </hibernate-configuration>

 1 import org.hibernate.Session;
 2 import org.hibernate.SessionFactory;
 3 import org.hibernate.cfg.Configuration;
 4 
 5 public class studentTest {
 6     public static void main(String[] args) {
 7         Student student = new Student();
 8         
 9         student.setId(1);
10         student.setAge(22);
11         student.setName("hibernate");
12         
13         Configuration cfg = new Configuration();
14         SessionFactory sf = cfg.configure().buildSessionFactory();
15         Session session = sf.openSession();
16 
17         session.beginTransaction();//进行事务管理    
18         session.save(student);
19         session.getTransaction().commit();
20     }
21 }