1.hibernate.cfg.xml
| 代碼如下 |
複製代碼 |
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> <hibernate-configuration>
<session-factory>
<!-- 設定資料庫方言 -->
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<!-- 設定資料庫的驅動 -->
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<!-- 設定資料庫使用者名稱 -->
<property name="hibernate.connection.username">root</property>
<!-- 設定資料庫的密碼 -->
<property name="hibernate.connection.password">root</property>
<!-- 設定資料庫的url -->
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/hibernate</property>
<!-- 配置資料池的最大容量 -->
<property name="hibernate.c3p0.max_size">20</property>
<!-- 配置資料池的最小容量 -->
<property name="hibernate.c3p0.min_size">1</property>
<!-- 配置資料連結的逾時界限 -->
<property name="hibernate.c3p0.timeout">5000</property>
<!-- 在控制台顯示後台是否列印執行的sql -->
<property name="hibernate.show_sql">true</property>
<!-- 是否以友好的格式顯示列印的sql -->
<property name="hibernate.format_sql">true</property>
<!-- 列印一些輔助性的注釋 -->
<property name="hibernate.use_sql_comments">true</property> <property name="hibernate.c3p0.max_statements">100</property>
<property name="hibernate.c3p0.idle_test_period">3000</property>
<property name="hibernate.c3p0.acquire_increment">2</property>
<property name="hibernate.c3p0.validate">true</property>
<!-- 配置資料操作的方式 -->
<property name="hbm2ddl.auto">create</property>
<!-- 將我們上面 Member 的對應檔添加進來 -->
<mapping resource="org/Rudiment/hibernate/Member.hbm.xml" />
</session-factory>
</hibernate-configuration> |
2.持久化類 Member.java
| 代碼如下 |
複製代碼 |
package org.Rudiment.hibernate; import java.util.HashMap;
import java.util.Map; public class Member {
private Integer id;
private String name;
private Integer age;
private Map<String, Address> addresses = new HashMap<String, Address>();
public Map<String, Address> getAddresses() {
return addresses;
}
public void setAddresses(Map<String, Address> addresses) {
this.addresses = addresses;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
} |
3.持久化類的組件類
| 代碼如下 |
複製代碼 |
package org.Rudiment.hibernate; import java.util.HashMap;
import java.util.Map; public class Address { private String street;
private String zipCode;
private String city; private Member owner;
public Member getOwner() {
return owner;
}
public void setOwner(Member owner) {
this.owner = owner;
}
public String getStreet() {
return street;
}
public void setStreet(String street) {
this.street = street;
}
public String getZipCode() {
return zipCode;
}
public void setZipCode(String zipCode) {
this.zipCode = zipCode;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
} |
4.持久化類的對應檔
| 代碼如下 |
複製代碼 |
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 2013-9-9 19:50:34 by Hibernate Tools 3.4.0.CR1 -->
<hibernate-mapping package="org.Rudiment.hibernate">
<class name="Member" table="TEST_MEMBER">
<id name="id" column="ID">
<generator class="native"></generator>
</id>
<property name="age" column="AGE"></property>
<property name="name" column="NAME"></property>
<map name="addresses" table="test_component">
<key column="component_id" not-null="true" />
<map-key column="component_key" type="string" />
<composite-element class="Address">
<parent name="owner"/>
<property name="street" column="home_street"></property>
<property name="zipCode" column="home_zip_code"></property>
<property name="city" column="home_city"></property>
</composite-element>
</map>
</class>
</hibernate-mapping> |
5.持久化類的操縱類 MemberHandler.java
| 代碼如下 |
複製代碼 |
package org.Rudiment.hibernate; import java.util.HashMap;
import java.util.Map; import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.service.ServiceRegistryBuilder; public class MemberHandler { public static void insert() {
Configuration conf = new Configuration();
conf.configure();
ServiceRegistry sr = new ServiceRegistryBuilder().applySettings(conf.getProperties()).buildServiceRegistry();
SessionFactory sf = conf.buildSessionFactory(sr);
Session session = sf.openSession();
session.beginTransaction();
Member m = new Member();
m.setAge(24);
m.setName("Louis");
Address ad1 = new Address();
ad1.setCity("廣州");
ad1.setOwner(m);
ad1.setStreet("一號街");
ad1.setZipCode("123"); Address ad2 = new Address();
ad2.setCity("深圳");
ad2.setOwner(m);
ad2.setStreet("二號街");
ad2.setZipCode("456"); Map<String, Address> am = new HashMap<String, Address>();
am.put("地址一", ad1);
am.put("地址二", ad2); m.setAddresses(am);
session.save(m);
session.getTransaction().commit();
session.close();
}
public static void main(String[] args) {
insert();
} } |
注:
當運行MemberHandler的時候將發現,後台資料庫多了一個 test_member 和 test_component 的資料表，表的內容如下:
| 代碼如下 |
複製代碼 |
mysql> show tables;
+---------------------+
| Tables_in_hibernate |
+---------------------+
| test_component |
| test_member |
+---------------------+
2 rows in set (0.00 sec) mysql> select * from test_member;
+----+------+-------+
| ID | AGE | NAME |
+----+------+-------+
| 1 | 24 | Louis |
+----+------+-------+
1 row in set (0.00 sec) mysql> select * from test_component;
+--------------+-------------+---------------+-----------+---------------+
| component_id | home_street | home_zip_code | home_city | component_key |
+--------------+-------------+---------------+-----------+---------------+
| 1 | 一號街 | 123 | 廣州 | 地址一 |
| 1 | 二號街 | 456 | 深圳 | 地址二 |
+--------------+-------------+---------------+-----------+---------------+
2 rows in set (0.00 sec) |
