hibernate框架配置

实体类

package entity;

public class Customer {

    /*
     * CREATE TABLE `cst_customer` (
      `cust_id` BIGINT(32) NOT NULL AUTO_INCREMENT COMMENT '客户编号(主键)',
      `cust_name` VARCHAR(32) NOT NULL COMMENT '客户名称(公司名称)',
      `cust_source` VARCHAR(32) DEFAULT NULL COMMENT '客户信息来源',
      `cust_industry` VARCHAR(32) DEFAULT NULL COMMENT '客户所属行业',
      `cust_level` VARCHAR(32) DEFAULT NULL COMMENT '客户级别',
      `cust_linkman` VARCHAR(64) DEFAULT NULL COMMENT '联系人',
      `cust_phone` VARCHAR(64) DEFAULT NULL COMMENT '固定电话',
      `cust_mobile` VARCHAR(16) DEFAULT NULL COMMENT '移动电话',
      PRIMARY KEY (`cust_id`)
    ) ENGINE=INNODB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
     */
    private Long cust_id;

    private String cust_name;
    private String cust_source;
    private String cust_industry;
    private String cust_level;
    private String cust_linkman;
    private String cust_phone;
    private String cust_mobile;
    public Long getCust_id() {
        return cust_id;
    }
    public void setCust_id(Long cust_id) {
        this.cust_id = cust_id;
    }
    public String getCust_name() {
        return cust_name;
    }
    public void setCust_name(String cust_name) {
        this.cust_name = cust_name;
    }
    public String getCust_source() {
        return cust_source;
    }
    public void setCust_source(String cust_source) {
        this.cust_source = cust_source;
    }
    public String getCust_industry() {
        return cust_industry;
    }
    public void setCust_industry(String cust_industry) {
        this.cust_industry = cust_industry;
    }
    public String getCust_level() {
        return cust_level;
    }
    public void setCust_level(String cust_level) {
        this.cust_level = cust_level;
    }
    public String getCust_linkman() {
        return cust_linkman;
    }
    public void setCust_linkman(String cust_linkman) {
        this.cust_linkman = cust_linkman;
    }
    public String getCust_phone() {
        return cust_phone;
    }
    public void setCust_phone(String cust_phone) {
        this.cust_phone = cust_phone;
    }
    public String getCust_mobile() {
        return cust_mobile;
    }
    public void setCust_mobile(String cust_mobile) {
        this.cust_mobile = cust_mobile;
    }
    @Override
    public String toString() {
        return "Customer [cust_id=" + cust_id + ", cust_name=" + cust_name + "]";
    }

}

 

实体类的配置文件

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

<hibernate-mapping package="entity">
      <class name="Customer" table="CUST">
            <id name="cust_id" column="cust_id">
                    <generator class="uuid"/>
            </id>

            <property name="cust_name" column="cust_name" />
            <property name="cust_source" column="cust_source" />
            <property name="cust_industry" column="cust_industry" />
            <property name="cust_level" column="cust_level" />
            <property name="cust_linkman" column="cust_linkman" />
            <property name="cust_phone" column="cust_phone" />
            <property name="cust_mobile" column="cust_mobile" />
      </class>
</hibernate-mapping>

 

• <hibernate-mapping>标签用来配置表与实体对象的关系
• <class>标签用来配置表与实体的对应关系，name类名，table数据库表名
• <id>配置主键映射的属性 name：填写主键对应的属性名，column:填写表中的主键列名
• <peoperty>用来配置除主键之外的属性与列名的映射关系，name：属性名，column:列名，not-null:配置该属性列是否不能为空，默认值为false，即不能为空，length:配置在数据库中列的长度，默认是数据库类型的最大长度，例如设置某个属性的类型为string类型，则其对应的数据库类型为varchar类型，最大长度为255。

 

主配置文件

<!--
  ~ Hibernate, Relational Persistence for Idiomatic Java
  ~
  ~ License: GNU Lesser General Public License (LGPL), version 2.1 or later.
  ~ See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
  -->
<!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 name="foo">

    <!--
        #hibernate.dialect org.hibernate.dialect.Oracle8iDialect
        #hibernate.dialect org.hibernate.dialect.Oracle9iDialect
        #hibernate.dialect org.hibernate.dialect.Oracle10gDialect
        #hibernate.connection.driver_class oracle.jdbc.driver.OracleDriver
        #hibernate.connection.username ora
        #hibernate.connection.password ora
        #hibernate.connection.url jdbc:oracle:thin:@localhost:1521:orcl
        #hibernate.connection.url jdbc:oracle:thin:@localhost:1522:XE
    -->
        <!--数据库驱动-->
        <property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
        <!--连接数据库URL-->
        <property name="hibernate.connection.url">jdbc:oracle:thin:@192.168.12.172:1521:indsdb</property>
        <!--数据库连接用户名-->
        <property name="hibernate.connection.username">mtstest</property>
        <!--数据库连接密码-->
        <property name="hibernate.connection.password">mtstest</property>
        <!--数据库方言-->
        <property name="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</property>
        <!--show_sql,hibernate会将其生成的sql进行打印-->
        <property name="show_sql">true</property>
        <!--将打印的sql进行格式化显示-->
        <property name="hibernate.format_sql">true</property>

        <!--
            ## auto schema export
            #hibernate.hbm2ddl.auto create-drop  自动创建表，并且每次框架运行完之后会将所有表进行删除
            #hibernate.hbm2ddl.auto create   自动建表，每次框架运行完之后都会创建新的表，原来的表数据会丢失！
            #hibernate.hbm2ddl.auto update （推荐使用）  自动生成表，如果已经存在就不会再生成，如果有变动，会更新表
            #hibernate.hbm2ddl.auto validate  任何情况下都不会自动生成表。每次启动都会校验数据库中的表是否正确。
        -->
        <!--自动导出表结构，自动建表-->
        <property name="hibernate.hbm2ddl.auto">update</property>

        <!--orm元数据：mapping中写实体类的hibernate配置文件-->
        <mapping resource="hibernate/Customer.hbm.xml"/>
        <class-cache
                class="org.hibernate.test.legacy.Simple"
                region="Simple"
                usage="read-write"/>
    </session-factory>
</hibernate-configuration>

 4.配置文件详解
 orm元数据(xxx.hbm.xml)
  <hibernate-mapping package="">
   <class name table>
    <id name >
     <generator class="">
    </id>
    <property name="" />
  
 hibernate.cfg.xml
  必选配置
          4+1 方言
  可选配置
         显示sql
         格式化sql
         自动生成表
         |- update
  orm元数据引入
         <mapping resource="" />