Hibernate 入门

hibernate 并不是只有在web项目中才使用，在初学时，可以直接在Java 项目里学习。

 

4.1.10final版本 配置以及需要的jar文件

配置文件从手册中拷贝

将所需要加注解的类交给hibernate知道。用mapping配置。

所需要的jar包

hibernate的requry包

mysql的连接包

单元测试包

 

 

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
        "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>

    <session-factory>

        <!-- Database connection settings -->
        <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="connection.url">jdbc:mysql://localhost:3306/bbs</property>
        <property name="connection.username">root</property>
        <property name="connection.password">root</property>

        <!-- JDBC connection pool (use the built-in) -->
        <!-- <property name="connection.pool_size">1</property> -->

        <!-- SQL dialect -->
        <property name="dialect">org.hibernate.dialect.MySQLDialect</property>

        <!-- Enable Hibernate's automatic session context management -->
        <!-- <property name="current_session_context_class">thread</property> -->

        <!-- Disable the second-level cache  -->
        <property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>

        <!-- Echo all executed SQL to stdout -->
        <property name="show_sql">true</property>

        <!-- Drop and re-create the database schema on startup -->
        <!-- <property name="hbm2ddl.auto">update</property>-->

        <!-- <mapping resource="org/hibernate/tutorial/domain/Event.hbm.xml"/> -->
        <mapping class="cn.njupt.model.Student"/>
    </session-factory>

</hibernate-configuration>

 

 

 

 

注解实体

public class Student
{
 private int id;
 private String name;
 private String profession;
 
 
 @Id @GeneratedValue
 @Column(name="id") 
 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 String getProfession()
 {
  return profession;
 }
 public void setProfession(String profession)
 {
  this.profession = profession;
 }
}