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使用HibernateTool:一個簡單的Hibernate程序(二)

一.生成后的文件結構如下圖

各文件內容如下：
二.配置文件
1.
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">

<hibernate-configuration>

????<session-factory>

????????<property?name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>

????????<property?name="hibernate.connection.password">1234</property>

????????<property?name="hibernate.connection.url">jdbc:mysql://localhost:3306/sample</property>

????????<property?name="hibernate.connection.username">root</property>

????????<property?name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>

????????<mapping?resource="cn/blogjava/start/TUser.hbm.xml"?/>

????</session-factory>

</hibernate-configuration>

2.
hibernate.reveng.xml

<?xml?version="1.0"?encoding="UTF-8"?>

<!DOCTYPE?hibernate-reverse-engineering?PUBLIC?"-//Hibernate/Hibernate?Reverse?Engineering?DTD?3.0//EN"?"http://hibernate.sourceforge.net/hibernate-reverse-engineering-3.0.dtd"?>

<hibernate-reverse-engineering>

??<table-filter?match-catalog="sample"?match-name="t_user"/>

</hibernate-reverse-engineering>

3.
GeneralHbmSettings.hbm.xml

<?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>????

<!--?

????Auto-generated?mapping?file?from

????the?hibernate.org?cfg2hbm?engine

????for?General?Global?Setttings

-->

????<import?

????????class="cn.blogjava.start.TUser"

????????rename="cn.blogjava.start.TUser"

????/>

????

</hibernate-mapping>

4.TUser.hbm.xml

<?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>

<!--?

????????Auto-generated?mapping?file?from

????????the?hibernate.org?cfg2hbm?engine

-->

????<class?name="cn.blogjava.start.TUser"?table="t_user"?catalog="sample">

????????<id?name="id"?type="integer">

????????????<column?name="id"?/>

????????????<generator?class="native"?/>

????????</id>

????????<property?name="name"?type="string">

????????????<column?name="name"?length="100"?not-null="true"?/>

????????</property>

????</class>

</hibernate-mapping>

5.
log4j.properties

###?direct?log?messages?to?stdout?###

log4j.appender.stdout=org.apache.log4j.ConsoleAppender

log4j.appender.stdout.Target=System.out

log4j.appender.stdout.layout=org.apache.log4j.PatternLayout

log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE}?%5p?%c{1}:%L?-?%m%n

###?direct?messages?to?file?hibernate.log?###

#log4j.appender.file=org.apache.log4j.FileAppender

#log4j.appender.file.File=hibernate.log

#log4j.appender.file.layout=org.apache.log4j.PatternLayout

#log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE}?%5p?%c{1}:%L?-?%m%n

###?set?log?levels?-?for?more?verbose?logging?change?'info'?to?'debug'?###

log4j.rootLogger=info,?stdout

log4j.logger.org.hibernate=error

#log4j.logger.org.hibernate=debug

###?log?HQL?query?parser?activity

#log4j.logger.org.hibernate.hql.ast.AST=debug

###?log?just?the?SQL

#log4j.logger.org.hibernate.SQL=debug

###?log?JDBC?bind?parameters?###

log4j.logger.org.hibernate.type=info

#log4j.logger.org.hibernate.type=debug

###?log?schema?export/update?###

log4j.logger.org.hibernate.tool.hbm2ddl=debug

###?log?HQL?parse?trees

#log4j.logger.org.hibernate.hql=debug

###?log?cache?activity?###

#log4j.logger.org.hibernate.cache=debug

###?log?transaction?activity

#log4j.logger.org.hibernate.transaction=debug

###?log?JDBC?resource?acquisition

#log4j.logger.org.hibernate.jdbc=debug

###?enable?the?following?line?if?you?want?to?track?down?connection?###

###?leakages?when?using?DriverManagerConnectionProvider?###

#log4j.logger.org.hibernate.connection.DriverManagerConnectionProvider=trace

三.Java類
1.POJO類TUser.java

package?cn.blogjava.start;
?2

/**
?6

?*?TUser?generated?by?hbm2java
?7

?*/
?8

public?class?TUser??implements?java.io.Serializable?{
10

????//?Fields????
13

?????private?Integer?id;
15

?????private?String?name;
16

????//?Constructors
19

????/**?default?constructor?*/
21

????public?TUser()?{
22

????}
23

????
24

????/**?constructor?with?id?*/
25

????public?TUser(Integer?id)?{
26

????????this.id?=?id;
27

????}
28

????
30

???
32

????//?Property?accessors
33

????public?Integer?getId()?{
35

????????return?this.id;
36

????}
37

????
38

????public?void?setId(Integer?id)?{
39

????????this.id?=?id;
40

????}
41

????public?String?getName()?{
43

????????return?this.name;
44

????}
45

????
46

????public?void?setName(String?name)?{
47

????????this.name?=?name;
48

????}
49

???
50

}

2.測試類HibernateTest.java

??1

package?cn.blogjava.start;
??2

??3

import?java.util.List;
??4

??5

import?junit.framework.Assert;
??6

import?junit.framework.TestCase;
??7

??8

import?org.hibernate.HibernateException;
??9

import?org.hibernate.Session;
?10

import?org.hibernate.SessionFactory;
?11

import?org.hibernate.Transaction;
?12

import?org.hibernate.cfg.Configuration;
?13

?14

?15

public?class?HibernateTest?extends?TestCase?{
?16

????
?17

????Session?session?=?null;
?18

????/**
?19

?????*?JUnit中的setUp方法在TestCase初始化的時候會自動調用
?20

?????*?一般用于初始化公用資源
?21

?????*/
?22

????protected?void?setUp()?{
?23

????????try?{
?24

????????????/**
?25

?????????????*?可以采用hibernate.properties或者hibernate.cfg.xml
?26

?????????????*?配置文件的初始化代碼
?27

?????????????*?
?28

?????????????*?采用hibernate.properties
?29

?????????????*?Configuration?config?=?new?Configuration()；
?30

?????????????*?config.addClass(TUser.class);
?31

?????????????*/
?32

????????????
?33

????????????//采用hibernate.cfg.xml配置文件，與上面的方法對比，兩個差異
?34

????????????//1.Configuration的初始化方式
?35

????????????//2.xml
?36

????????????Configuration?config?=?new?Configuration().configure();
?37

????????????SessionFactory?sessionFactory?=?config.buildSessionFactory();
?38

????????????session?=?sessionFactory.openSession();
?39

????????????
?40

????????}?catch?(HibernateException?e)?{
?41

????????????//?TODO:?handle?exception
?42

????????????e.printStackTrace();
?43

????????}????????
?44

????}
?45

?46

????/**
?47

?????*?JUnit中的tearDown方法在TestCase執行完畢的時候會自動調用
?48

?????*?一般用于釋放資源
?49

?????*/????
?50

????protected?void?tearDown()?{
?51

????????try?{
?52

????????????session.close();????????
?53

????????}?catch?(HibernateException?e)?{
?54

????????????//?TODO:?handle?exception
?55

????????????e.printStackTrace();
?56

????????}????????
?57

????}????
?58

????
?59

????/**
?60

?????*?對象持久化測試(Insert方法)
?61

?????*/????????
?62

????public?void?testInsert()?{
?63

????????Transaction?tran?=?null;
?64

????????try?{
?65

????????????tran?=?session.beginTransaction();
?66

????????????TUser?user?=?new?TUser();
?67

????????????user.setName("byf");
?68

????????????session.save(user);
?69

????????????session.flush();
?70

????????????tran.commit();
?71

????????????Assert.assertEquals(user.getId().intValue()>0?,true);
?72

????????}?catch?(HibernateException?e)?{
?73

????????????//?TODO:?handle?exception
?74

????????????e.printStackTrace();
?75

????????????Assert.fail(e.getMessage());
?76

????????????if(tran?!=?null)?{
?77

????????????????try?{
?78

????????????????????tran.rollback();
?79

????????????????}?catch?(Exception?e1)?{
?80

????????????????????//?TODO:?handle?exception
?81

????????????????????e1.printStackTrace();
?82

????????????????}
?83

????????????}
?84

????????}
?85

????}
?86

????
?87

????/**
?88

?????*?對象讀取測試(Select方法)
?89

?????*/????????????
?90

????public?void?testSelect(){
?91

????????String?hql?=?"?from?TUser?where?name='byf'";
?92

????????try?{
?93

????????????List?userList?=?session.createQuery(hql).list();
?94

????????????TUser?user?=?(TUser)userList.get(0);
?95

????????????Assert.assertEquals(user.getName(),?"byf");
?96

????????}?catch?(Exception?e)?{
?97

????????????//?TODO:?handle?exception
?98

????????????e.printStackTrace();
?99

????????????Assert.fail(e.getMessage());
100

????????}
101

????}
102

}
103

posted on 2006-07-05 14:37 knowhow 閱讀(784) 評論(0) 編輯收藏所屬分類: ORM：Hibernate及其他

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