Rhythmk 学习 Hibernate 01 - maven 创建Hibernate 项目之 增删改查入门
时间：2014-05-01 19:43:40
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1、环境：
Maven ：3.1.1
开发工具：Spring Tool Suite
数据库 ： Mysql 5.6
2、项目文件结构
文件代码：
2.1 、pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>hibernate</groupId> <artifactId>hibernate</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>hibernate</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <dependencies> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-core</artifactId> <version>4.3.5.Final</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.30</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> </dependencies> </project>
2.2 、HibernateUtil.java
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package
com.rhythmk.hibernate01;import javax.imageio.spi.ServiceRegistry;import org.hibernate.SessionFactory;import org.hibernate.boot.registry.StandardServiceRegistryBuilder;import org.hibernate.cfg.Configuration;import org.hibernate.service.ServiceRegistryBuilder;/* * 参考 URL: * */public
class HibernateUtil { // By : rhythmk.cnblogs.com private
static final SessionFactory sessionFactory = buildSessionFactory(); private
static SessionFactory buildSessionFactory() { try
{ Configuration configuration=new
Configuration().configure(); return
configuration.buildSessionFactory(new
ServiceRegistryBuilder().applySettings(configuration.getProperties()).build()); } catch
(Throwable ex) { System.err.println("Initial SessionFactory creation failed."
+ ex); throw
new ExceptionInInitializerError(ex); } } public
static SessionFactory getSessionFactory() { return
sessionFactory; }} |
2.3、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"> <!-- Generated by MyEclipse Hibernate Tools. --> <hibernate-configuration> <session-factory> <property name="dialect">org.hibernate.dialect.MySQLDialect</property> <property name="connection.url">jdbc:mysql://localhost:3306/shishuocms</property> <property name="connection.username">root</property> <property name="connection.password">wangkun</property> <property name="connection.driver_class">com.mysql.jdbc.Driver</property> <property name="myeclipse.connection.profile">com.mysql.jdbc.Driver</property> <!--是否在后台显示Hibernate用到的SQL语句，开发时设置为true，便于差错，程序运行时可以在Eclipse的控制台显示Hibernate的执行Sql语句。项目部署后可以设置为false，提高运行效率 --> <property name="hibernate.show_sql">true </property> <mapping resource="com/rhythmk/model/user.hbm.xml" /> </session-factory> </hibernate-configuration>
2.4 User.java
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package
com.rhythmk.model;import java.util.Date;public class User { public
Integer getUserId() { return
userId; } public
void setUserId(Integer userId) { this.userId = userId; } public
Integer getOpenId() { return
openId; } public
void setOpenId(Integer openId) { this.openId = openId; } @Override public
String toString() { return
"User [userId=" + userId + ", openId="
+ openId + ", type=" + type + ", name="
+ name + ", createTime="
+ createTime + "]"; } public
String getType() { return
type; } public
void setType(String type) { this.type = type; } public
String getName() { return
name; } public
void setName(String name) { this.name = name; } public
Date getCreateTime() { return
createTime; } public
void setCreateTime(Date createTime) { this.createTime = createTime; } public
Integer userId; public
Integer openId; public
String type; public
String name; public
Date createTime;} |
2.5 user.hbm.xml
<?xml version="1.0" encoding="utf-8"?> <!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.rhythmk.model.User" table="user"> <id name="userId" type="int"> <column name="userId" /> <generator class="native" /> </id> <property name="openId" type="int"> <column name="openId" not-null="true" /> </property> <property name="type" type="string"> <column name="type" not-null="true" /> </property> <property name="name" type="string"> <column name="name" length="45" not-null="true" /> </property> <property name="createTime" type="timestamp"> <column name="createTime" not-null="true" /> </property> </class> </hibernate-mapping>
3、测试代码（hibernatedemo1.java）：
插入：
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@Test public
void InsertUser() { SessionFactory sessionfac = HibernateUtil.getSessionFactory(); Session session = null; org.hibernate.Transaction tran = null; try
{ sessionfac.openSession(); User entity = new
User(); tran = session.beginTransaction(); entity.setType("管理员"); entity.setName("rhythmk"); entity.setOpenId(1); entity.setCreateTime(new
Date()); session.save(entity); tran.commit(); System.out.println("Insert into OK!"); } catch
(Exception e) { if
(tran != null) { tran.rollback(); } e.printStackTrace(); } finally
{ if
(session != null) session.close(); } } |
修改：
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@Testpublic void UpdateUser() { Session session = null; org.hibernate.Transaction tran = null; try
{ session = HibernateUtil.getSessionFactory().openSession(); tran = session.beginTransaction(); User entity = (User) session.load(User.class, 2); entity.setName("Update"); session.save(entity); tran.commit(); entity = (User) session.load(User.class, 2); System.out.println(entity.toString()); } catch
(Exception e) { if
(tran != null) { tran.rollback(); } // TODO: handle exception e.printStackTrace(); } finally
{ if
(session != null) session.close(); }} |
删除：
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@Test public
void DelUser() { Session session = null; org.hibernate.Transaction tran = null; try
{ session = HibernateUtil.getSessionFactory().openSession(); tran = session.beginTransaction(); Object obj = session.load(User.class, 4); User entity = null; if
(obj != null) { entity = (User) obj; } if
(entity != null) { session.delete(entity); System.out.println("删除成功！"); tran.commit(); } } catch
(Exception e) { if
(tran != null) { tran.rollback(); } // TODO: handle exception e.printStackTrace(); } finally
{ if
(session != null) session.close(); } } |
单对象查询
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@Test public
void SelectUser() { Session session = null; try
{ session = HibernateUtil.getSessionFactory().openSession(); User entity = (User) session.load(User.class, 2); System.out.println(entity.toString()); } catch
(Exception e) { // TODO: handle exception e.printStackTrace(); } finally
{ if
(session != null) session.close(); } } |
List查询
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@Test public
void SelectListUser() { Session session = null; try
{ session = HibernateUtil.getSessionFactory().openSession(); Query query= session.createQuery("from User "); List<User> list=(List<User>)query.list(); for
(User user : list) { System.out.println(user); } } catch
(Exception e) { e.printStackTrace(); } finally
{ if
(session != null) session.close(); } } |
分页查询：
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@Testpublic void SelectPageListUser() {// 获取分页数据 Session session = null; try
{ session = HibernateUtil.getSessionFactory().openSession(); Query query= session.createQuery("from User "); List<User> list=(List<User>)query .setFirstResult(0) //从0项开始 .setMaxResults(3) //每页三条数据 .list(); for
(User user : list) { System.out.println(user); } } catch
(Exception e) { e.printStackTrace(); } finally
{ if
(session != null) session.close(); }} |
代码包：http://pan.baidu.com/s/1hq1esh2
备注：
添加 JBOOS
TOOL路径
http://download.jboss.org/jbosstools/updates/stable/helios/
Rhythmk 学习 Hibernate 01 - maven 创建Hibernate 项目之 增删改查入门,布布扣,bubuko.com
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