一个简单的 hibernate 配置程序
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第一步：准备hibernate.cfg.xml文件(也可以找到log4j.properties，它与Hibernate配置文件在同一个目录中)，可以在源码中找个模板(路径为：hibernate-3.2.0.ga\hibernate-3.2\doc\tutorial\src\..)
第二步：准备表对象和映射文件(也就是类和相应的*.hbm.xml文件，在同一个包下)，源代码中的模板路径为：\hibernate-3.2.0.ga\hibernate-3.2\doc\tutorial\src\events\..
第三步：准备程序入口即main函数，并导入需要用到的包，下面是一个精简的列表(只需要11个包)：
?antlr.jar
?asm.jar
?cglib-2.1.3.jar
?commons-collections-2.1.1.jar
?commons-logging-1.0.4.jar
?dom4j-1.6.1.jar
?hibernate3.jar
?jta.jar
?junit-3.8.1.jar
?log4j-1.2.14.jar
?ojdbc14.jar
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下面是一个例子的源代码：
?1，配置文件hibernate.cfg.xml
??1?<?xml?version='1.0'?encoding='utf-8'?>
?2?<!DOCTYPE?hibernate-configuration?PUBLIC
?3?????????"-//Hibernate/Hibernate?Configuration?DTD?3.0//EN"
?4?????????"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
?5?
?6?<hibernate-configuration>
?7?
?8?????<session-factory>
?9?
10?????????<!--?Database?connection?settings?-->
11?????????<property?name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
12?????????<property?name="connection.url">jdbc:oracle:thin:@127.0.0.1:1521:orcl</property>
13?????????<property?name="connection.username">scott</property>
14?????????<property?name="connection.password">tiger</property>
15?
16?????????<!--?SQL?dialect?-->
17?????????<property?name="dialect">org.hibernate.dialect.Oracle9Dialect</property>
18?
19?????????<!--?Enable?Hibernate's?automatic?session?context?management?-->
20?????????<property?name="current_session_context_class">thread</property>
21?
22?????????<!--?Echo?all?executed?SQL?to?stdout?-->
23?????????<property?name="show_sql">true</property>
24?
25?????????<!--?Drop?and?re-create?the?database?schema?on?startup?-->
26?????????<property?name="hbm2ddl.auto">create</property>
27?
28?????????<mapping?resource="com/klein/Animal.hbm.xml"/>
29?
30?????</session-factory>
31?
32?</hibernate-configuration>
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??log4j.properties
?1?###?direct?log?messages?to?stdout?###
?2?log4j.appender.stdout=org.apache.log4j.ConsoleAppender
?3?log4j.appender.stdout.Target=System.out
?4?log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
?5?log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE}?%5p?%c{1}:%L?-?%m%n
?6?
?7?###?direct?messages?to?file?hibernate.log?###
?8?#log4j.appender.file=org.apache.log4j.FileAppender
?9?#log4j.appender.file.File=hibernate.log
10?#log4j.appender.file.layout=org.apache.log4j.PatternLayout
11?#log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE}?%5p?%c{1}:%L?-?%m%n
12?
13?###?set?log?levels?-?for?more?verbose?logging?change?'info'?to?'debug'?###
14?
15?log4j.rootLogger=warn,?stdout
16?
17?log4j.logger.org.hibernate=info
18?#log4j.logger.org.hibernate=debug
19?
20?###?log?HQL?query?parser?activity
21?#log4j.logger.org.hibernate.hql.ast.AST=debug
22?
23?###?log?just?the?SQL
24?#log4j.logger.org.hibernate.SQL=debug
25?
26?###?log?JDBC?bind?parameters?###
27?log4j.logger.org.hibernate.type=info
28?#log4j.logger.org.hibernate.type=debug
29?
30?###?log?schema?export/update?###
31?log4j.logger.org.hibernate.tool.hbm2ddl=debug
32?
33?###?log?HQL?parse?trees
34?#log4j.logger.org.hibernate.hql=debug
35?
36?###?log?cache?activity?###
37?#log4j.logger.org.hibernate.cache=debug
38?
39?###?log?transaction?activity
40?#log4j.logger.org.hibernate.transaction=debug
41?
42?###?log?JDBC?resource?acquisition
43?#log4j.logger.org.hibernate.jdbc=debug
44?
45?###?enable?the?following?line?if?you?want?to?track?down?connection?###
46?###?leakages?when?using?DriverManagerConnectionProvider?###
47?#log4j.logger.org.hibernate.connection.DriverManagerConnectionProvider=trace
48?
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?2,映射文件Animal.hbm.xml
??1?<?xml?version="1.0"?>
?2?<!DOCTYPE?hibernate-mapping?PUBLIC
?3?????????"-//Hibernate/Hibernate?Mapping?DTD?3.0//EN"
?4?????????"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
?5?
?6?<hibernate-mapping>
?7?????<class?name="com.klein.Animal"?table="t_animal">
?8?????????<id?name="id">
?9?????????????<generator?class="native"/>
10?????????</id>
11?????????<property?name="name"/>
12?????</class>
13?</hibernate-mapping>
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?表对象Animal
??1?package?com.klein;
?2?
?3?public?class?Animal?{
?4?????private?int?id;
?5?
?6?????private?String?name;
?7?
?8?????public?int?getId()?{
?9?????????return?id;
10?????}
11?
12?????public?void?setId(int?id)?{
13?????????this.id?=?id;
14?????}
15?
16?????public?String?getName()?{
17?????????return?name;
18?????}
19?
20?????public?void?setName(String?name)?{
21?????????this.name?=?name;
22?????}
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?3,程序入口
?1?package?com.klein;
?2?
?3?import?org.hibernate.Session;
?4?import?org.hibernate.SessionFactory;
?5?import?org.hibernate.Transaction;
?6?import?org.hibernate.cfg.Configuration;
?7?public?class?Client?{
?8?????
?9?????public?static?void?main(String[]?args)?{
10?????????
11?????????Configuration?configuration?=?new?Configuration().configure();
12?????????SessionFactory?factory?=?configuration.buildSessionFactory();
13?????????Session?session?=?factory.getCurrentSession();
14?????????
15?????????Transaction?transaction?=?session.beginTransaction();
16?????????
17?????????Animal?animal?=?new?Animal();
18?????????animal.setName("Tiger");
19?????????session.save(animal);
20?????????
21?????????transaction.commit();
22?????}
23?}
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