2025-02-17

基於XML配置文件實現的第一個hibernate小程序。
1.首先新建一個普通的java工程。
2.將oracle數據庫驅動包和實現hibernate的最小包導入到該工程中。
Oracle數據庫驅動包為:
 
Oracle 10g 10.2.0.4 JDBC_ojdbc14.jar
Hibernate的最小包為:
antlr-2.7.6.jar
commons-collections-3.1.jar
dom4j-1.6.1.jar
hibernate3.jar
javassist-3.4.GA.jar
jta-1.1.jar
slf4j-api-1.5.2.jar
slf4j-nop-1.5.2.jar
3.在src文件夾下建一個包名為com.neusoft.bean包,在該包下建立一個名為Person.java的文件,內容如下:
package com.neusoft.bean; 
 
public class Person { 
    private int id; 
    private String name; 
 
    public int getId() { 
        return id; 
    } 
 
    public void setId(int id) { 
        this.id = id; 
    } 
 
    public String getName() { 
        return name; 
    } 
 
    public void setName(String name) { 
        this.name = name; 
    } 
 

再在該包下建立名為Person.hbm.xml的Person.java映射文件,內容如下:
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC 
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN" 
        "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
    <class name="com.neusoft.bean.Person" table="person">
        <id name="id" column="person_ID">
            <generator class="native" />
        </id>
        <property name="name" column="person_name" />
    </class>
</hibernate-mapping>
4.在src包下建立名為com.neusoft.test的包,然後在該包下建立名為Test.java的測試類。內容為:
package com.neusoft.test; 
 
import org.hibernate.Session; 
import org.hibernate.SessionFactory; 
import org.hibernate.cfg.Configuration; 
import com.neusoft.bean.Person; 
 
public class Test { 
 
    public static void main(String[] args) { 
        Person p = new Person(); 
        p.setId(1); 
        p.setName("wjl"); 
 
        Configuration cfg = new Configuration(); 
        SessionFactory sf = cfg.configure().buildSessionFactory(); 
        Session s = sf.openSession(); 
        s.beginTransaction(); 
        s.save(p); 
        s.getTransaction().commit(); 
        s.close(); 
        sf.close(); 
 
    } 
 

5. 在src文件夾下建立名為hibernate.cfg.xml的hibernate的配置文件。內容如下:
<?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">
<hibernate-configuration>
    <session-factory>
        <!– Database connection settings –>
        <property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
        <property name="connection.url">jdbc:oracle:thin:@192.168.1.102:1521:oracle</property>
        <property name="connection.username">hr</property>
        <property name="connection.password">hr</property>
 
        <!– JDBC connection pool (use the built-in) –>
        <property name="connection.pool_size">1</property>
 
        <!– SQL dialect –>
        <property name="dialect">org.hibernate.dialect.OracleDialect</property>
 
        <!– Enable Hibernate's automatic session context management –>
        <property name="current_session_context_class">thread</property>
 
        <!– Disable the second-level cache  –>
        <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
 
        <!– Echo all executed SQL to stdout –>
        <property name="show_sql">true</property>
 
        <!– Drop and re-create the database schema on startup –>
        <property name="hbm2ddl.auto">create</property>
 
        <mapping resource="com/neusoft/bean/Person.hbm.xml"/>
 
    </session-factory>
 
</hibernate-configuration>
6. 運行Test.java,控制臺將顯示如下內容:
Hibernate: select hibernate_sequence.nextval from dual
Hibernate: insert into person (person_name, person_ID) values (?, ?)
7.查看數據庫,將看到生成瞭person表,並插入瞭一條記錄。
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作者“極致書生”

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