hibernate4中主要的配置文件配置
在hibernate中有两个主要的配置文件:hibernate.cfg.xml,xxx.hbm.xml。
使用mysql数据库时,hibernate.cfg.xml配置文件如下:
<!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 >
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost:3306/test_hibernate</property>
<property name="connection.username">root</property>
<property name="connection.password">123</property>
<property name="show_sql">true</property>
<property name="hbm2ddl.auto">update</property>
<mapping resource="com/zc/hibernate/User.hbm.xml"/>
</session-factory>
</hibernate-configuration>
User类代码如下:
package com.zc.hibernate;
import java.util.Date;
public class User {
private int id;
private String username;
private String password;
private Date birthday;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
}
User类的映射文件:User.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com.zc.hibernate">
<class name="User" table="t_user">
<id name="id">
<generator class="native"/>
</id>
<property name="username"/>
<property name="password"/>
<property name="birthday" type="timestamp"/>
</class>
</hibernate-mapping>