所謂基本類型，就是指java.lang.String,java.lang.Integer等基本類?以及用戶編寫的非實(shí)體類，雖然map中的數(shù)據(jù)是我們的數(shù)據(jù)庫中的一個(gè)表，但我們不必為他創(chuàng)建POJO類及HBM文件
數(shù)據(jù)庫結(jié)構(gòu)：
?
create
?
table
?teamMap?(id?
varchar
(
32
),teamname?
varchar
(
32
));
create
?
table
?studentMap?(name?
varchar
(
32
),description?
varchar
(
32
),?team_id?
varchar
(
32
));
?
實(shí)體類：（只有Team）,其中的student無實(shí)體類，用表studentMap的name字段作為key,description作為value
?
package
?Collection.Map.Simple;
import
?java.util.HashMap;
import
?java.util.Map;
public
?
class
?Team?
{
???
private
?String?id;
???
private
?String?teamname;
???
private
?Map?students
=
new
?HashMap();
public
?String?getId()?
{
????
return
?id;
}
public
?
void
?setId(String?id)?
{
????
this
.id?
=
?id;
}
public
?String?getTeamname()?
{
????
return
?teamname;
}
public
?
void
?setTeamname(String?teamname)?
{
????
this
.teamname?
=
?teamname;
}
public
?Map?getStudents()?
{
????
return
?students;
}
public
?
void
?setStudents(Map?students)?
{
????
this
.students?
=
?students;
}
}
?
Team.hbm.xml
?
<?
xml?version="1.0"?encoding="utf-8"
?>
<!
DOCTYPE?hibernate-mapping?PUBLIC?"-//Hibernate/Hibernate?Mapping?DTD?3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"
>
<!--
?
????Mapping?file?autogenerated?by?MyEclipse?-?Hibernate?Tools
-->
<
hibernate-mapping
>
<
class?
name
="Collection.Map.Simple.Team"
?table
="teamMap"
?
>
????
<
id?
name
="id"
?unsaved-value
="null"
>
??????
<
generator?
class
="uuid.hex"
></
generator
>
????
</
id
>
????
<
property?
name
="teamname"
?type
="string"
?column
="teamname"
></
property
>
????
<
map?
name
="students"
?table
="studentMap"
>
??????
<
key?
column
="team_id"
></
key
>
??????
<!--
?index代表key,element代表value,一個(gè)map標(biāo)簽只能有一個(gè)element?
-->
??????
<
index?
column
="name"
?type
="string"
></
index
>
??????
<
element?
type
="string"
?column
="description"
></
element
>
????
</
map
>
</
class
>
</
hibernate-mapping
>
?
Hibernate.cfg.xml
?
<?
xml?version='1.0'?encoding='UTF-8'
?>
<!
DOCTYPE?hibernate-configuration?PUBLIC
??????????"-//Hibernate/Hibernate?Configuration?DTD?3.0//EN"
??????????"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"
>
<!--
?Generated?by?MyEclipse?Hibernate?Tools.???????????????????
-->
<
hibernate-configuration
>
<
session-factory
>
????
<
property?
name
="connection.username"
>
root
</
property
>
????
<
property?
name
="connection.url"
>
????????jdbc:mysql://localhost:3306/schoolproject?characterEncoding=gb2312
&
useUnicode=true
????
</
property
>
????
<
property?
name
="dialect"
>
????????org.hibernate.dialect.MySQLDialect
????
</
property
>
????
<
property?
name
="myeclipse.connection.profile"
>
mysql
</
property
>
????
<
property?
name
="connection.password"
>
1234
</
property
>
????
<
property?
name
="connection.driver_class"
>
????????com.mysql.jdbc.Driver
????
</
property
>
????
<
property?
name
="hibernate.dialect"
>
????????org.hibernate.dialect.MySQLDialect
????
</
property
>
????
<
property?
name
="hibernate.show_sql"
>
true
</
property
>
????
<
property?
name
="current_session_context_class"
>
thread
</
property
>
????
<
property?
name
="jdbc.batch_size"
>
15
</
property
>
????
<
mapping?
resource
="Collection/Map/Simple/Team.hbm.xml"
?
/>
</
session-factory
>
</
hibernate-configuration
>
?
測(cè)試代碼：
?
package
?Collection.Map.Simple;
import
?java.io.File;
import
?java.util.Map;
import
?org.hibernate.Session;
import
?org.hibernate.SessionFactory;
import
?org.hibernate.Transaction;
import
?org.hibernate.cfg.Configuration;
public
?
class
?Test?
{
????
public
?
static
?
void
?main(String[]?args)?
{
????????String?filePath
=
System.getProperty(
"
user.dir
"
)
+
File.separator
+
"
src/Collection/Map/Simple
"
+
File.separator
+
"
hibernate.cfg.xml
"
;
????????File?file
=
new
?File(filePath);
????????System.out.println(filePath);
????????SessionFactory?sessionFactory
=
new
?Configuration().configure(file).buildSessionFactory();
????????Session?session
=
sessionFactory.openSession();
????????Transaction?t
=
session.beginTransaction();
????????
????????Team?team
=
new
?Team();
????????team.setTeamname(
"
team1
"
);
????????Map?stuMap
=
team.getStudents();
????????stuMap.put(
"
stu1
"
,?
"
stu1?description
"
);
????????stuMap.put(
"
stu2
"
,?
"
stu2?description
"
);
????????
????????session.save(team);
????????
????????t.commit();
????????
????}
}
?
運(yùn)行結(jié)果：
Hibernate: insert into teamMap (teamname, id) values (?, ?)
Hibernate: insert into studentMap (team_id, name, description) values (?, ?, ?)
Hibernate: insert into studentMap (team_id, name, description) values (?, ?, ?)
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