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如果你学习的是市场营销,是销售,也许参加大课堂的学习会更合适,因为你的工作能力中有个基础就是搭建自己的人脉,
many-to-many为例,有Position和User两张表,一个Position能够有多个Users,一个User也能够有多个Position,两头的联系关系表为test_user_position。经由过程在PO中到场XDoclet,主动天生hbm设置文件。不空话,看代码。
packagetest;
importjava.util.Set;
importjava.util.TreeSet;
/***//**
*@hibernate.classtable="test_position"
*/
publicclassPosition...{
privateintid;
privateintname;
privateSet<Users>users=newTreeSet<Users>();
/***//**
*@hibernate.idgenerator-class="identity"type="int"
*/
publicintgetId()...{
returnid;
}
publicvoidsetId(intid)...{
this.id=id;
}
/***//**
*@hibernate.propertylength="25"
*/
publicintgetName()...{
returnname;
}
publicvoidsetName(intname)...{
this.name=name;
}
/***//**
*@hibernate.setinverse="true"lazy="true"table="test_user_position"
*@hibernate.collection-keycolumn="position_id"
*@hibernate.collection-many-to-manyclass="test.Users"column="user_id"
*/
publicSet<Users>getUsers()...{
returnusers;
}
publicvoidsetUsers(Set<Users>users)...{
this.users=users;
}
}
packagetest;
importjava.util.Set;
importjava.util.TreeSet;
/***//**
*@hibernate.class<Atitle=tablehref="http://www.alimama.com/membersvc/buyadzone/buy_ad_zone.htm?adzoneid=892989"target=_blank>table</A>="test_position"
*/
publicclassPosition...{
privateintid;
privateintname;
privateSet<Users>users=newTreeSet<Users>();
/***//**
*@hibernate.idgenerator-class="identity"type="int"
*/
publicintgetId()...{
returnid;
}
publicvoidsetId(intid)...{
this.id=id;
}
/***//**
*@hibernate.propertylength="25"
*/
publicintgetName()...{
returnname;
}
publicvoidsetName(intname)...{
this.name=name;
}
/***//**
*@hibernate.setinverse="true"lazy="true"<Atitle=tablehref="http://www.alimama.com/membersvc/buyadzone/buy_ad_zone.htm?adzoneid=892989"target=_blank>table</A>="test_user_position"
*@hibernate.collection-keycolumn="position_id"
*@hibernate.collection-many-to-manyclass="test.Users"column="user_id"
*/
publicSet<Users>getUsers()...{
returnusers;
}
publicvoidsetUsers(Set<Users>users)...{
this.users=users;
}
}
packagetest;
importjava.util.Set;
importjava.util.TreeSet;
/***//**
*@hibernate.classtable="test_position"
*/
publicclassPosition...{
privateintid; privateintname;
privateSet<Users>users=newTreeSet<Users>();
/***//**
*@hibernate.idgenerator-class="identity"type="int"
*/
publicintgetId()...{
returnid;
}
publicvoidsetId(intid)...{
this.id=id;
}
/***//**
*@hibernate.propertylength="25"
*/
publicintgetName()...{
returnname;
}
publicvoidsetName(intname)...{
this.name=name;
}
/***//**
*@hibernate.setinverse="true"lazy="true"table="test_user_position"
*@hibernate.collection-keycolumn="position_id"
*@hibernate.collection-many-to-manyclass="test.Users"column="user_id"
*/
publicSet<Users>getUsers()...{
returnusers;
}
publicvoidsetUsers(Set<Users>users)...{
this.users=users;
}
}
接上去是Users.java
Java代码
packagetest;
importjava.util.*;
/***//**
*@hibernate.classtable="test_uses"
*/
publicclassUsers...{
privateintid;
privateStringname;
privateSet<Position>positions=newTreeSet<Position>();
/***//**
*@hibernate.idgenerator-class="identity"typ="int"
*/
publicintgetId()...{
returnid;
}
publicvoidsetId(intid)...{
this.id=id;
}
/***//**
*@hibernate.propertylength="25"
*/
publicStringgetName()...{
returnname;
}
publicvoidsetName(Stringname)...{
this.name=name;
}
/***//**
*@hibernate.settable="test_user_position"lazy="true"
*@hibernate.collection-keycolumn="user_id"
*@hibernate.collection-many-to-manyclass="test.Position"column="position_id"
*/
publicSet<Position>getPositions()...{
returnpositions;
}
publicvoidsetPositions(Set<Position>positions)...{
this.positions=positions;
}
}
viewplaincopytoclipboardprint?
packagetest;
importjava.util.*;
/***//**
*@hibernate.class<Atitle=tablehref="http://www.alimama.com/membersvc/buyadzone/buy_ad_zone.htm?adzoneid=892989"target=_blank>table</A>="test_uses"
*/
publicclassUsers...{
privateintid;
privateStringname;
privateSet<Position>positions=newTreeSet<Position>();
/***//** *@hibernate.idgenerator-class="identity"typ="int"
*/
publicintgetId()...{
returnid;
}
publicvoidsetId(intid)...{
this.id=id;
}
/***//**
*@hibernate.propertylength="25"
*/
publicStringgetName()...{
returnname;
}
publicvoidsetName(Stringname)...{
this.name=name;
}
/***//**
*@hibernate.set<Atitle=tablehref="http://www.alimama.com/membersvc/buyadzone/buy_ad_zone.htm?adzoneid=892989"target=_blank>table</A>="test_user_position"lazy="true"
*@hibernate.collection-keycolumn="user_id"
*@hibernate.collection-many-to-manyclass="test.Position"column="position_id"
*/
publicSet<Position>getPositions()...{
returnpositions;
}
publicvoidsetPositions(Set<Position>positions)...{
this.positions=positions;
}
}
packagetest;
importjava.util.*;
/***//**
*@hibernate.classtable="test_uses"
*/
publicclassUsers...{
privateintid;
privateStringname;
privateSet<Position>positions=newTreeSet<Position>();
/***//**
*@hibernate.idgenerator-class="identity"typ="int"
*/
publicintgetId()...{
returnid;
}
publicvoidsetId(intid)...{
this.id=id;
}
/***//**
*@hibernate.propertylength="25"
*/
publicStringgetName()...{
returnname;
}
publicvoidsetName(Stringname)...{
this.name=name;
}
/***//**
*@hibernate.settable="test_user_position"lazy="true"
*@hibernate.collection-keycolumn="user_id"
*@hibernate.collection-many-to-manyclass="test.Position"column="position_id"
*/
publicSet<Position>getPositions()...{
returnpositions;
}
publicvoidsetPositions(Set<Position>positions)...{
this.positions=positions;
}
}
在Myeclipse中右键点击项目,选择“Properties",从界面当选择”Myeclipse/XDoclet",点击“AddStandard...”,增加“StandardHibernate”,点击OK,停止设置。
在项目中创建Hibernate.cfg.xml,设置好SessionFactory和数据源
右键点击项目,选择“Myeclipse/RunXDoclet",将主动创立以上两个类对应的hbm文件。
注重:创立完成的hbm文件存在成绩,内里有role和readonly属性,将前者改成name,后者删失落便可。
其实你不用Struts,spring这些工具,直接用jsp,servlet能够很方便地写出来,而且,可以根据个人的水平、爱好,有很多方案。而struts,spring这些工具的出来。 |
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