彻底搞定用Xdoclet生成Hibernate所有配置文件-阿里云开发者社区

目标：

利用XDoclet从Java持久化类生成hibernate mapping，hibernate.cfg.xml和mysql数据库脚本。

具体步骤：（省略环境配置过程）

第一步：先写实体类

package com.lavasoft.zfv.domain.zfv.book.entity;

import java.util.Date;

/**
* File Name:   Book.java
* Created by: IntelliJ IDEA.
* Copyright:   Copyright (c) 2003-2006
* Author:      leizhimin
* Modifier:    leizhimin
* Date Time:   2006-12-16 12:54:50
* Readme:      图书
*/

/**
* 图书
*
* @hibernate.mapping default-lazy="false"
* @hibernate.meta attribute="class-description" value="图书"
* @hibernate.class table="bk_ts"
*/
public class Book {
    private Long id;            //标识
    private String code;        //代码
    private String name;        //名称*
    private String bookman;     //出版社
    private Date pubDate;       //出版日期
    private String author;      //作者
    private String translator; //译者
    private Double price;       //单价*
    private int amount;         //采购数量*
    private String buyer;       //采购人
    private String assessor;    //审核人
    private Date dateMark;      //操作时间（登记日期）*
    private String operator;    //操作员(录入人)*
    private String sort;        //类别（XXYYZZ格式，对应大中细类别）*
    private String summary;     //摘要（内容简介）
    private String remark;      //备注

public Book() {
}

    /**
     * @hibernate.id generator-class="native" column="id"
     * @hibernate.meta attribute="field-description" value="标识"
     */
    public Long getId() {
        return id;
    }

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

    /**
     * @hibernate.property column="dm" type="string" length="20" not-null="false"
     * @hibernate.meta attribute="field-description" value="代码"
     */
    public String getCode() {
        return code;
    }

    public void setCode(String code) {
        this.code = code;
    }

    /**
     * @hibernate.property column="mc" type="string" length="100" not-null="true"
     * @hibernate.meta attribute="field-description" value="名称"
     */
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    /**
     * @hibernate.property column="cbs" type="string" length="24" not-null="false"
     * @hibernate.meta attribute="field-description" value="出版社"
     */
    public String getBookman() {
        return bookman;
    }

    public void setBookman(String bookman) {
        this.bookman = bookman;
    }

    /**
     * @hibernate.property column="cbrq" type="timestamp" not-null="false"
     * @hibernate.meta attribute="field-description" value="出版日期"
     */
    public Date getPubDate() {
        return pubDate;
    }

    public void setPubDate(Date pubDate) {
        this.pubDate = pubDate;
    }

   /**
     * @hibernate.property column="zz" type="string" length="24" not-null="false"
     * @hibernate.meta attribute="field-description" value="作者"
     */
    public String getAuthor() {
        return author;
    }

    public void setAuthor(String author) {
        this.author = author;
    }

    /**
     * @hibernate.property column="yz" type="string" length="24" not-null="false"
     * @hibernate.meta attribute="field-description" value="译者"
     */
    public String getTranslator() {
        return translator;
    }

    public void setTranslator(String translator) {
        this.translator = translator;
    }

    /**
     * @hibernate.property column="dj" type="big_decimal" precision="19" scale="6" not-null="true"
     * @hibernate.meta attribute="field-description" value="单价"
     */
    public Double getPrice() {
        return price;
    }

    public void setPrice(Double price) {
        this.price = price;
    }

    /**
     * @hibernate.property column="sl" type="int" not-null="true"
     * @hibernate.meta attribute="field-description" value="数量"
     */
    public int getAmount() {
        return amount;
    }

    public void setAmount(int amount) {
        this.amount = amount;
    }

   /**
     * @hibernate.property column="cgr" type="string" length="12" not-null="false"
     * @hibernate.meta attribute="field-description" value="采购人"
     */
    public String getBuyer() {
        return buyer;
    }

    public void setBuyer(String buyer) {
        this.buyer = buyer;
    }

    /**
     * @hibernate.property column="shr" type="string" length="12" not-null="false"
     * @hibernate.meta attribute="field-description" value="审核人"
     */
    public String getAssessor() {
        return assessor;
    }

    public void setAssessor(String assessor) {
        this.assessor = assessor;
    }

    /**
     * @hibernate.property column="czsj" type="timestamp" not-null="true"
     * @hibernate.meta attribute="field-description" value="操作时间"
     */
    public Date getDateMark() {
        return dateMark;
    }

    public void setDateMark(Date dateMark) {
        this.dateMark = dateMark;
    }

    /**
     * @hibernate.property column="czy" type="string" length="12" not-null="true"
     * @hibernate.meta attribute="field-description" value="操作员"
     */
    public String getOperator() {
        return operator;
    }

    public void setOperator(String operator) {
        this.operator = operator;
    }

    /**
     * @hibernate.property column="lb" type="string" length="12" not-null="true"
     * @hibernate.meta attribute="field-description" value="类别"
     */
    public String getSort() {
        return sort;
    }

    public void setSort(String sort) {
        this.sort = sort;
    }

    /**
     * @hibernate.property column="zy" type="string" length="600" not-null="false"
     * @hibernate.meta attribute="field-description" value="摘要"
     */
    public String getSummary() {
        return summary;
    }

    public void setSummary(String summary) {
        this.summary = summary;
    }

    /**
     * @hibernate.property column="bz" type="string" length="200" not-null="false"
     * @hibernate.meta attribute="field-description" value="备注"
     */
    public String getRemark() {
        return remark;
    }

    public void setRemark(String remark) {
        this.remark = remark;
    }
}

第二步：写xdoclet的ant脚本

说明，此脚本有四个目标，执行后的结果分别是：

generate-configuration：生成hibernate.cfg.xml

generate-mapping：生成hibernate实体类映射文件

generate-schema-mysql：生成MySQL数据库脚本

注意：在生成MySQL数据库脚本之前应该先生成生成hibernate实体类映射文件。

<?xml version="1.0" encoding="gb2312"?>
<project name="xdoclet-hibernate-zfv" default="xdoclet" basedir="../../../../../">

</target>

</target>

</target>

第三步：生成的结果如下

生成的配置文件

<?xml version="1.0" encoding="gb2312"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 2.0//EN" " [url]http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd[/url] ">

<hibernate-configuration>

<session-factory>

<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
  <property name="show_sql">true</property>
  <property name="use_outer_join">false</property>
   <property name="connection.username">zfvims</property>
   <property name="connection.password">leizhimin</property>
   <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
   <property name="connection.url">jdbc:mysql://localhost:3306/zfvims</property>

<mapping resource="com/lavasoft/zfv/domain/zfv/book/entity/Book.hbm.xml"/>
  <mapping resource="com/lavasoft/zfv/domain/zfv/book/entity/Reader.hbm.xml"/>
</session-factory>

</hibernate-configuration>

生成的映射文件

<?xml version="1.0" encoding="gb2312"?>

<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
" [url]http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd[/url] ">

<hibernate-mapping
        default-lazy="false"
>
    <class
        name="com.lavasoft.zfv.domain.zfv.book.entity.Book"
        table="bk_ts"
    >
        <meta attribute="class-description">图书</meta>

</class>

</hibernate-mapping>

生成的数据库脚本

drop table if exists bk_ts;

    create table bk_ts (
        id bigint not null auto_increment comment '标识',
        dm varchar(20) comment '代码',
        mc varchar(100) not null comment '名称',
        cbs varchar(24) comment '出版社',
        cbrq datetime comment '出版日期',
        zz varchar(24) comment '作者',
        yz varchar(24) comment '译者',
        dj numeric(19,6) not null comment '单价',
        sl integer not null comment '数量',
        cgr varchar(12) comment '采购人',
        shr varchar(12) comment '审核人',
        czsj datetime not null comment '操作时间',
        czy varchar(12) not null comment '操作员',
        lb varchar(12) not null comment '类别',
        zy text comment '摘要',
        bz varchar(200) comment '备注',
        primary key (id)
    ) comment='图书' type=InnoDB;

概括：结合Xdoclet来做hibernate应用会给你带来非常高效率和价值，但是配置脚本和实体标签的写法不容易掌握，需要大量实践才可以。这个例子虽然是针对MySQL的，可是稍作修改（数据库方言），就可以用于Oracle、DB2、Sybase下的Hibernate应用，你可以稍作修改将此脚本植入你的项目中，非常的方便。欢迎和我再次交流！

本文转自 leizhimin 51CTO博客，原文链接：http://blog.51cto.com/lavasoft/12545，如需转载请自行联系原作者