映射文件

• User.hbm.xml

<?xml version="1.0" encoding="utf-8"?> 
<!DOCTYPE hibernate-mapping 
 PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" 
 "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> 

<hibernate-mapping> 
    <!--類別名稱與表格名稱映射-->
    <class name="onlyfun.caterpillar.User" table="user"> 
        <!--id與主鍵映射-->
        <id name="id" column="id"> 
            <generator class="native"/> 
        </id> 
        <!--類別屬性與表格欄位的映射-->
        <property name="name" column="name"/> 
        <property name="age" column="age"/> 
    </class> 
</hibernate-mapping>

• User.java

package onlyfun.caterpillar;

public class User {
    private Integer id;
    private String name;
    private Integer age;
 
    // 必須要有一個預設的建構方法
    // 以使得Hibernate可以使用Constructor.newInstance()建立物件
    public User() {}

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
 
    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }
}

• user 表格