SSH实例(4)

Clas.hbm.xml文件如下：

<?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>
    <class name="com.school.entity.Clas" table="clas">
        <id name="id" type="java.lang.Integer">
            <column name="ID" precision="22" scale="0" />
            <generator class="identity" />
        </id>
        <property name="name" type="java.lang.String">
            <column name="NAME"  length="50" not-null="true">
                <comment>课程名称</comment>
            </column>
        </property>
        <property name="comment" type="java.lang.String">
            <column name="COMMENT" length="500" not-null="false">
                <comment>课程介绍</comment>
            </column>
        </property>
    </class>
</hibernate-mapping>

Clas.java文件如下：

package com.school.entity;public class Clas {        // 课程id
    private int id;
    // 课程名称
    private String name;
    // 课程介绍
    private String comment;    // 默认构造方法
    public Clas() {
    }    // 包含全部属性的构造方法
    public Clas(int id, String name, String comment) {
        super();
        this.id = id;
        this.name = name;
        this.comment = comment;
    }    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 getComment() {
        return comment;
    }
    public void setComment(String comment) {
        this.comment = comment;
    }}