首先建立一个ormdemo命名为ormtest。然后新建lib文件夹导入相关jar包。
首先导入hibernate的jar包:
然后导入日志类包:
以及连接mysql的驱动jar包:
最终使用如下jar包:
然后创建一个Visitor类:
public class Visitor { private Integer id; private String name; private Integer age; private String sex; private String message; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Integer getAge() { return age; } public void setAge(Integer age) { this.age = age; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } public String getmessage() { return message; } public void setmessage(String message) { this.message = message; } @Override public String toString() { return "Visitor [id=" + id + ", name=" + name + ", age=" + age + ", sex=" + sex + ", message=" + message + "]"; } }编写映射文件Visitor.hbm.xml:
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"> <hibernate-mapping> <class name="com.hck.entity.Visitor" table="Visitor"> <id name="id" column="id"> <generator class="native"/> </id> <property name="name" column="name" type="string"/> <property name="age" column="age" type="integer"/> <property name="sex" column="sex" type="string"/> <property name="message" column="message" type="string"/> </class> </hibernate-mapping>
编写核心配置文件hibernate.cfg.xml:
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factory> <property name="hibernate.dialect"> org.hibernate.dialect.MySQLDialect </property> <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/db_blog</property> <property name="hibernate.connection.username">root</property> <property name="hibernate.connection.password">001122</property> <property name="format_sql">true</property> <mapping resource="com/hck/entity/visitor.hbm.xml"/> </session-factory> </hibernate-configuration>
最后编写单元测试类:
public class HibernateTestDemo { Configuration config; SessionFactory sessionFactory; Session session; Transaction transaction; @Before public void setUp() { config=new Configuration().configure(); sessionFactory=config.buildSessionFactory(); session=sessionFactory.openSession(); transaction=session.beginTransaction(); } @Test public void insert() { Visitor visitor=new Visitor(); visitor.setId(1); visitor.setName("david"); visitor.setAge(18); visitor.setSex("m"); visitor.setmessage("[email protected]"); session.save(visitor); } @Test public void delete() { Visitor visitor=(Visitor)session.get(Visitor.class, 1); session.delete(visitor); } @Test public void select() { Visitor visitor=(Visitor)session.get(Visitor.class, 1); System.out.println(visitor); } @Test public void update() { Visitor visitor=new Visitor(); visitor.setId(1); visitor.setName("david"); visitor.setAge(18); visitor.setSex("m"); visitor.setmessage("[email protected]"); session.saveOrUpdate(visitor); } @After public void closeTransaction() { transaction.commit(); session.close(); sessionFactory.close(); } }
执行mysql操作如下: