计算机二级辅导:利用Ant和XDoclet自动产生映射文件例子
发布时间：2010/3/14 18:07:04 来源：城市学习网 编辑：MOON
//User.java
在企业中model类的属性可能有几百个而且还可能继承了很多属性，这样的model如果手写映射文件岂不是很大的工程！
这里介绍Ant+XDoclet配合来自动生成映射文件。
必备：Ant和XDocle的jar包。
操作很简单，自己写一个model类例如People.java，但是要自动生成映射文件这个类需要有注释，写一个build.xml文件，下载Xdoclet，网址：http://xdoclet.sourceforge.net/
新建包com.test.model，存放实体类Group，User
packagedbdemo;
importjava.util.Date;
importjava.util.Set;
/**
*@hibernate.classtable="Users"
*
*@authorEthan
*
*RepresentsaUser
*/
publicclassUser{
privateStringuserID;
privateStringuserName;
privateStringpassword;
privateStringemailAddress;
privateDatelastLogon;
privateSetcontacts;
privateSetbooks;
privateAddressaddress;
/**
*@hibernate.propertycolumn="EmailAddress"type="string"
*@returnString
*/
publicStringgetEmailAddress(){
returnemailAddress;
}
/**
*@hibernate.propertycolumn="LastLogon"type="date"
*@returnDate
*/
publicDategetLastLogon(){
returnlastLogon;
}
/**
*@hibernate.propertycolumn="Password"type="string"
*@returnString
*/
publicStringgetPassword(){
returnpassword;
}
/**
*@hibernate.idgenerator-type="string"
*column="LogonID"
*@returnString
*/
publicStringgetUserID(){
returnuserID;
}
/**
*@hibernate.propertycolumn="Name"type="string"
*@returnString
*/
publicStringgetUserName(){
returnuserName;
}
/**
*@paramstring
*/
publicvoidsetEmailAddress(Stringstring){
emailAddress=string;
}
/**
*@paramstring
*/
publicvoidsetLastLogon(Datedate){
lastLogon=date;
}
/**
*@paramstring
*/
publicvoidsetPassword(Stringstring){
password=string;
}
/**
*@paramstring
*/
publicvoidsetUserID(Stringstring){
userID=string;
}
/**
*@paramstring
*/
publicvoidsetUserName(Stringstring){
userName=string;
}
/**
*@hibernate.setrole="contacts"table="Contacts"
*cascade="all"readonly="true"
*@hibernate.collection-keycolumn="User_ID"
*@hibernate.collection-one-to-many
*@returnjava.util.Set
*/
publicSetgetContacts(){
returncontacts;
}
/**
*@paramset
*/
publicvoidsetContacts(Setset){
contacts=set;
}
/**
*@hibernate.setrole="books"table="Book_User_Link"
*cascade="all"eadonly="true"
*@hibernate.collection-keycolumn="UserID"
*@hibernate.collection-many-to-many
*column="BookID"
*@returnjava.util.Set
*/
publicSetgetBooks(){
returnbooks;
}
/**
*@paramset
*/
publicvoidsetBooks(Setset){
books=set;
}
/**
*@hibernate.one-to-one
*@returndbdemo.Address
*/
publicAddressgetAddress(){
returnaddress;
}
/**
*@paramaddress
*/
publicvoidsetAddress(Addressaddress){
this.address=address;
}
}
//在test目录下建立build.xml，其中property name="xdoclet.home" value="C:/xdoclet-plugins-dist-1.0.4"为你所解压的xdoclet目录。 AntbuildFilebuild.xml
projectname="HibernateExample"default="about"basedir="."
!Thelocationwhereyourxdocletjarfilesreside
propertyname="xdoclet.lib.home"value="c:/java_api/xdoclet-1.2b3/lib"/
targetname="clean"depends="init"description="removesalldirectories
relatedtothisbuild"
deletedir="${dist}"/
/target
targetname="init"description="Initializespropertiesthatareusedby
othertargets."
propertyname="dist"value="dist"/
/target
targetname="prepare"depends="init，clean"description="createsdistdir
ectory"
echomessage="Creatingrequireddirectories..."/
mkdirdir="${dist}"/
/target
targetname="hibernate"depends="prepare"
description="GeneratesHibernateclassdescriptorfiles."
taskdefname="hibernatedoclet"classname="xdoclet.
modules.hibernate.HibernateDocletTask"classpath
filesetdir="${xdoclet.lib.home}"
includename="*.jar"/
/fileset
/classpath
/taskdef
!Executethehibernatedoclettask
hibernatedoclet
destdir="."
excludedtags="@version，@author，@todo"
force="true"
verbose="true"
mergedir="${dist}"
filesetdir="."
includename="**/dbdemo/*.java"/
/fileset
hibernateversion="2.0"/
/hibernatedoclet
/target
targetname="about"description="aboutthisbuildfile"depends="init"
echomessage="Usethisformatforthearguments:"/
echomessage="anthibernate"/
echomessage=""/
/target
/project
执行过程: WindowsShowViewOtherAnt文件里面(Ant)在Ant空白处右键 Add Buildfiles选择你要生成配置文件的bulild.xml文件OK，让后分别执行，所要生成的文件即可.赶快试试吧...
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