hibernate添加数据入门小案例

1.建立一个java项目，在目录下新建一个lib文件夹引入hibernate架包如图所示：

2. 新建com.LHB.domain包，在包中分别创建一个Employee.java和Employee.hbm.xml文件，

Employee.java中的代码如下：

 1 package com.LHB.domain;
 2
 3 import java.util.Date;
 4
 5 public class Employee {
 6
 7     private Integer id;
 8     private String name;
 9     private String email;
10     private Date hiredate;
11     public Integer getId() {
12         return id;
13     }
14     public void setId(Integer id) {
15         this.id = id;
16     }
17     public String getName() {
18         return name;
19     }
20     public void setName(String name) {
21         this.name = name;
22     }
23     public String getEmail() {
24         return email;
25     }
26     public void setEmail(String email) {
27         this.email = email;
28     }
29     public Date getHiredate() {
30         return hiredate;
31     }
32     public void setHiredate(Date hiredate) {
33         this.hiredate = hiredate;
34     }
35
36 }

Employee.hbm.xml映射文件配置如下：

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <!-- 映射文件通过DTD来指定格式 -->
 3 <!DOCTYPE hibernate-mapping PUBLIC
 4     "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
 5     "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
 6 <!-- 该文件用于配置domain对象和表的映射关系 -->
 7 <hibernate-mapping package="com.LHB.domain">
 8     <class name="Employee" table="employee" >
 9         <!-- id元素用于指定主键属性 -->
10         <id name="id" column="id" type="java.lang.Integer">
11             <!-- 该元素用来指定主键生成的策略hilo native increment sequence uuid -->
12             <generator class="sequence">
13                 <param name="sequence">emp_seq</param>
14             </generator>
15         </id>
16
17         <!-- 对其它属性还要配置 -->
18         <property name="name" type="java.long.String">
19             <column name="name" not-null="false"  />
20         </property>
21         <property name="emial" type="java.long.String">
22             <column name="emial" not-null="false" />
23         </property>
24         <property name="hiredate" type="java.util.Date">
25             <column name="hiredate" not-null="false" />
26         </property>
27     </class>
28
29
30 </hibernate-mapping>

3.在项目src文件下创建hibernate.cfg.xml配置文件，其中的配置信息如下：

 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     <session-factory>
 8         <!-- 配置使用的driver -->
 9         <property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
10         <property name="connection.username">scott</property>
11         <property name="connection.password">tiger</property>
12         <property name="connection.url">jdbc:oracle:thin:@localhost:1521:orcl</property>
13         <!-- 配置dialect方言，明确告诉hibernate连接哪种数据库 -->
14         <property name="dialect">org.hibernate.dialect.OracleDialect</property>
15         <!-- 显示出对应的sql语句 -->
16         <property name="show_sql">true</property>
17         <!-- 指定管理的对象映射文件 -->
18         <mapping resource="com/LHB/domain/Employee.hbm.xml"/>
19
20     </session-factory>
21 </hibernate-configuration>

4. 创建一个测试类TestMain

 1 package com.LHB.view;
 2
 3 import java.util.Date;
 4
 5 import org.hibernate.SessionFactory;
 6 import org.hibernate.Transaction;
 7 import org.hibernate.cfg.Configuration;
 8 import org.hibernate.classic.Session;
 9
10 import com.LHB.domain.Employee;
11
12 public class TestMain {
13
14     public static void main(String[] args) {
15         // TODO Auto-generated method stub
16
17         //使用hibernate完成crud操作
18         //现在不使用service，直接测试
19         //1.创建Configuration,该对象用于读取hibernate.cfg.xml并完成初始化
20         Configuration configuration = new Configuration().configure();
21         //2.创建SessionFactory【这是一个会话工厂，是一个重量级的对象】
22         SessionFactory sessionFactory = configuration.buildSessionFactory();
23         //3.创建Session,相当于jdbc中的Connection
24         Session  session = sessionFactory.openSession();
25         //4.对于hibernate，要求在进行增加，删除，修改的时候使用事物提交
26         Transaction transaction = session.beginTransaction();
27
28         //添加一个雇员
29         Employee employee = new Employee();
30         employee.setName("zhangsan");
31         employee.setEmail("[email protected]");
32         employee.setHiredate(new Date());
33
34         //保存
35         session.save(employee);//相当于insert into....[被hibernate封装]
36
37         session.close();
38
39     }
40
41 }

原文地址：https://www.cnblogs.com/lihuibin/p/8168260.html