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ssy341:
说的简单了点,和官网的文档差不多,多文件上传也不是很好,不过可 ...
jQuery插件AjaxFileUpload文件上传实现Javascript多文件上传功能 -
蓝凝幽偌:
有没有jar包?
org.apache.commons.net.ftp.FTPClient 的简单用法 -
tinguo002:
在这里缓缓走过,很为楼主钻研精神感动,也感谢楼主分享。
关于Struts2资源文件的配置
Hibernate 多对多单向关联
一、模型介绍
多个人(Person)对应多个地址(Address)。
一个人可对应多个地址,一个地址也可以对应多个人。
二、实体(省略getter、setter方法)
public class Personnn {
private int personid;
private String name;
private int age;
private Set addresses=new HashSet();
public class Addressnn {
private int addressid;
private String addressdetail;
三、表模型
mysql> desc person_nn;
+----------+--------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+----------+--------------+------+-----+---------+----------------+
| personid | int(11) | NO | PRI | NULL | auto_increment |
| name | varchar(255) | YES | | NULL | |
| age | int(11) | YES | | NULL | |
+----------+--------------+------+-----+---------+----------------+
mysql> desc join_nn;
+-----------+---------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-----------+---------+------+-----+---------+-------+
| personid | int(11) | NO | PRI | | |
| addressid | int(11) | NO | PRI | | |
+-----------+---------+------+-----+---------+-------+
mysql> desc person_nn;
+----------+--------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+----------+--------------+------+-----+---------+----------------+
| personid | int(11) | NO | PRI | NULL | auto_increment |
| name | varchar(255) | YES | | NULL | |
| age | int(11) | YES | | NULL | |
+----------+--------------+------+-----+---------+----------------+
四、生成的SQL脚本
/* Formatted on 2007/08/21 11:13 (QP5 v5.50) */
CREATE TABLE `address_nn` (
`addressid` int(11) NOT NULL auto_increment,
`addressdetail` varchar(255) default NULL,
PRIMARY KEY (`addressid`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=gbk;
/* Formatted on 2007/08/21 11:14 (QP5 v5.50) */
CREATE TABLE `join_nn` (
`personid` int(11) NOT NULL,
`addressid` int(11) NOT NULL,
PRIMARY KEY (`personid`,`addressid`),
KEY `FKAAB98CF5E008E752` (`personid`),
KEY `FKAAB98CF5239F6A16` (`addressid`),
CONSTRAINT `FKAAB98CF5239F6A16` FOREIGN KEY (`addressid`) REFERENCES `address_nn` (`addressid`),
CONSTRAINT `FKAAB98CF5E008E752` FOREIGN KEY (`personid`) REFERENCES `person_nn` (`personid`)
) ENGINE=InnoDB DEFAULT CHARSET=gbk;
/* Formatted on 2007/08/21 11:14 (QP5 v5.50) */
CREATE TABLE `person_nn` (
`personid` int(11) NOT NULL auto_increment,
`name` varchar(255) default NULL,
`age` int(11) default NULL,
PRIMARY KEY (`personid`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=gbk;
五、映射方法
<hibernate-mapping>
<class name="com.lavasoft.dx._n_n.Personnn" table="PERSON_nn">
<id name="personid">
<generator class="identity"/>
</id>
<property name="name"/>
<property name="age"/>
<!--映射集合属性,join_1ntab是连接表表名-->
<set name="addresses"
table="join_nn"
>
<!--“column="personid"”确定PERSON_1ntab表关联到连接表的外键列名-->
<key column="personid"/>
<!--“column="addressid"”关联PERSON_1ntab表的Address1ntab对象的id在连接表中的列名-->
<many-to-many
column="addressid"
class="com.lavasoft.dx._n_n.Addressnn"/>
</set>
</class>
</hibernate-mapping>
<hibernate-mapping>
<class name="com.lavasoft.dx._n_n.Addressnn" table="ADDRESS_nn">
<id name="addressid">
<generator class="identity"/>
</id>
<property name="addressdetail"/>
</class>
</hibernate-mapping>
六、测试方法
public class Test_nn {
public static void main(String[] args){
Addressnn add1=new Addressnn();
Addressnn add2=new Addressnn();
Addressnn add3=new Addressnn();
Personnn p1=new Personnn();
Personnn p2=new Personnn();
add1.setAddressdetail("郑州市经三路");
add2.setAddressdetail("合肥市宿州路");
add3.setAddressdetail("北京市长安路");
p1.setName("wang");
p1.setAge(30);
p2.setName("lee");
p2.setAge(50);
p1.getAddresses().add(add1);
p1.getAddresses().add(add2);
p2.getAddresses().add(add2);
p2.getAddresses().add(add3);
Session session= HibernateUtil.getCurrentSession();
Transaction tx=session.beginTransaction();
session.save(add1);
session.save(add2);
session.save(add3);
session.save(p1);
session.save(p2);
tx.commit();
HibernateUtil.closeSession();
}
}
七、测试结果
1) :正常保存.
session.save(add1);
session.save(add2);
session.save(add3);
session.save(p1);
session.save(p2);
Hibernate: insert into ADDRESS_nn (addressdetail) values (?)
Hibernate: insert into ADDRESS_nn (addressdetail) values (?)
Hibernate: insert into ADDRESS_nn (addressdetail) values (?)
Hibernate: insert into PERSON_nn (name, age) values (?, ?)
Hibernate: insert into PERSON_nn (name, age) values (?, ?)
Hibernate: insert into join_nn (personid, addressid) values (?, ?)
Hibernate: insert into join_nn (personid, addressid) values (?, ?)
Hibernate: insert into join_nn (personid, addressid) values (?, ?)
Hibernate: insert into join_nn (personid, addressid) values (?, ?)
本文出自 “熔 岩” 博客,转载请与作者联系!
一、模型介绍
多个人(Person)对应多个地址(Address)。
一个人可对应多个地址,一个地址也可以对应多个人。
二、实体(省略getter、setter方法)
public class Personnn {
private int personid;
private String name;
private int age;
private Set addresses=new HashSet();
public class Addressnn {
private int addressid;
private String addressdetail;
三、表模型
mysql> desc person_nn;
+----------+--------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+----------+--------------+------+-----+---------+----------------+
| personid | int(11) | NO | PRI | NULL | auto_increment |
| name | varchar(255) | YES | | NULL | |
| age | int(11) | YES | | NULL | |
+----------+--------------+------+-----+---------+----------------+
mysql> desc join_nn;
+-----------+---------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-----------+---------+------+-----+---------+-------+
| personid | int(11) | NO | PRI | | |
| addressid | int(11) | NO | PRI | | |
+-----------+---------+------+-----+---------+-------+
mysql> desc person_nn;
+----------+--------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+----------+--------------+------+-----+---------+----------------+
| personid | int(11) | NO | PRI | NULL | auto_increment |
| name | varchar(255) | YES | | NULL | |
| age | int(11) | YES | | NULL | |
+----------+--------------+------+-----+---------+----------------+
四、生成的SQL脚本
/* Formatted on 2007/08/21 11:13 (QP5 v5.50) */
CREATE TABLE `address_nn` (
`addressid` int(11) NOT NULL auto_increment,
`addressdetail` varchar(255) default NULL,
PRIMARY KEY (`addressid`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=gbk;
/* Formatted on 2007/08/21 11:14 (QP5 v5.50) */
CREATE TABLE `join_nn` (
`personid` int(11) NOT NULL,
`addressid` int(11) NOT NULL,
PRIMARY KEY (`personid`,`addressid`),
KEY `FKAAB98CF5E008E752` (`personid`),
KEY `FKAAB98CF5239F6A16` (`addressid`),
CONSTRAINT `FKAAB98CF5239F6A16` FOREIGN KEY (`addressid`) REFERENCES `address_nn` (`addressid`),
CONSTRAINT `FKAAB98CF5E008E752` FOREIGN KEY (`personid`) REFERENCES `person_nn` (`personid`)
) ENGINE=InnoDB DEFAULT CHARSET=gbk;
/* Formatted on 2007/08/21 11:14 (QP5 v5.50) */
CREATE TABLE `person_nn` (
`personid` int(11) NOT NULL auto_increment,
`name` varchar(255) default NULL,
`age` int(11) default NULL,
PRIMARY KEY (`personid`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=gbk;
五、映射方法
<hibernate-mapping>
<class name="com.lavasoft.dx._n_n.Personnn" table="PERSON_nn">
<id name="personid">
<generator class="identity"/>
</id>
<property name="name"/>
<property name="age"/>
<!--映射集合属性,join_1ntab是连接表表名-->
<set name="addresses"
table="join_nn"
>
<!--“column="personid"”确定PERSON_1ntab表关联到连接表的外键列名-->
<key column="personid"/>
<!--“column="addressid"”关联PERSON_1ntab表的Address1ntab对象的id在连接表中的列名-->
<many-to-many
column="addressid"
class="com.lavasoft.dx._n_n.Addressnn"/>
</set>
</class>
</hibernate-mapping>
<hibernate-mapping>
<class name="com.lavasoft.dx._n_n.Addressnn" table="ADDRESS_nn">
<id name="addressid">
<generator class="identity"/>
</id>
<property name="addressdetail"/>
</class>
</hibernate-mapping>
六、测试方法
public class Test_nn {
public static void main(String[] args){
Addressnn add1=new Addressnn();
Addressnn add2=new Addressnn();
Addressnn add3=new Addressnn();
Personnn p1=new Personnn();
Personnn p2=new Personnn();
add1.setAddressdetail("郑州市经三路");
add2.setAddressdetail("合肥市宿州路");
add3.setAddressdetail("北京市长安路");
p1.setName("wang");
p1.setAge(30);
p2.setName("lee");
p2.setAge(50);
p1.getAddresses().add(add1);
p1.getAddresses().add(add2);
p2.getAddresses().add(add2);
p2.getAddresses().add(add3);
Session session= HibernateUtil.getCurrentSession();
Transaction tx=session.beginTransaction();
session.save(add1);
session.save(add2);
session.save(add3);
session.save(p1);
session.save(p2);
tx.commit();
HibernateUtil.closeSession();
}
}
七、测试结果
1) :正常保存.
session.save(add1);
session.save(add2);
session.save(add3);
session.save(p1);
session.save(p2);
Hibernate: insert into ADDRESS_nn (addressdetail) values (?)
Hibernate: insert into ADDRESS_nn (addressdetail) values (?)
Hibernate: insert into ADDRESS_nn (addressdetail) values (?)
Hibernate: insert into PERSON_nn (name, age) values (?, ?)
Hibernate: insert into PERSON_nn (name, age) values (?, ?)
Hibernate: insert into join_nn (personid, addressid) values (?, ?)
Hibernate: insert into join_nn (personid, addressid) values (?, ?)
Hibernate: insert into join_nn (personid, addressid) values (?, ?)
Hibernate: insert into join_nn (personid, addressid) values (?, ?)
本文出自 “熔 岩” 博客,转载请与作者联系!
发表评论
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2011-06-19 09:48 628作者:曾巧(numenzq) 摘要 Annotation( ... -
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Hibernate 多对多双向关联
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Hibernate 一对多外键双向关联
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