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使用HibernateTool:一個(gè)簡(jiǎn)單的Hibernate程序(二)

一.生成后的文件結(jié)構(gòu)如下圖

各文件內(nèi)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.url">jdbc:mysql://localhost:3306/sample</property>

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

</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

-->

</id>

</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(lèi)
1.POJO類(lèi)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

/** constructor with id */
25

public TUser(Integer id) {
26

this.id = id;
27

}
28

// Property accessors
33

public Integer getId() {
35

return this.id;
36

}
37

public void setId(Integer id) {
39

this.id = id;
40

}
41

public String getName() {
43

return this.name;
44

}
45

public void setName(String name) {
47

this.name = name;
48

}
49

}

2.測(cè)試類(lèi)HibernateTest.java

package cn.blogjava.start;
2

import java.util.List;
4

import junit.framework.Assert;
6

import junit.framework.TestCase;
7

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

public class HibernateTest extends TestCase {
16

Session session = null;
18

/**
19

* JUnit中的setUp方法在TestCase初始化的時(shí)候會(huì)自動(dòng)調(diào)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h(yuǎn)ibernate.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

//采用hibernate.cfg.xml配置文件，與上面的方法對(duì)比，兩個(gè)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

} catch (HibernateException e) {
41

// TODO: handle exception
42

e.printStackTrace();
43

}
44

}
45

/**
47

* JUnit中的tearDown方法在TestCase執(zhí)行完畢的時(shí)候會(huì)自動(dòng)調(diào)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

/**
60

* 對(duì)象持久化測(cè)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

/**
88

* 對(duì)象讀取測(cè)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 2006-06-28 19:54 baim 閱讀(493) 評(píng)論(0) 編輯收藏所屬分類(lèi): 開(kāi)源軟件框架

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