hibernate框架属于dao层，类似dbutils的作用，是一款ORM（对象关系映射）操作
使用hibernate框架好处是：操作数据库不需要写SQL语句，使用面向对象的方式完成
这里使用eclipse工具搭建：
官网下载：https://sourceforge.net/projects/hibernate/files/hibernate-orm/5.0.7.Final/
下载.zip文件后解压：
lib文件夹下的required文件夹内的jar包为必须包：
另外还需要MySQL的驱动包：
mysql-connector-java-5.1.7-bin.jar
放入WEB-INFO的lib中：
导入包完成：
导入约束：
复制这里的dtd文件以及文件中的这一行：
上边是文件路径，下边粘贴复制的那一行
数据库创建一个表，做示例：
CREATE TABLE `cst_customer` ( `cust_id` BIGINT(32) NOT NULL AUTO_INCREMENT COMMENT ‘客户编号(主键)‘, `cust_name` VARCHAR(32) NOT NULL COMMENT ‘客户名称(公司名称)‘, `cust_source` VARCHAR(32) DEFAULT NULL COMMENT ‘客户信息来源‘, `cust_industry` VARCHAR(32) DEFAULT NULL COMMENT ‘客户所属行业‘, `cust_level` VARCHAR(32) DEFAULT NULL COMMENT ‘客户级别‘, `cust_linkman` VARCHAR(64) DEFAULT NULL COMMENT ‘联系人‘, `cust_phone` VARCHAR(64) DEFAULT NULL COMMENT ‘固定电话‘, `cust_mobile` VARCHAR(16) DEFAULT NULL COMMENT ‘移动电话‘, PRIMARY KEY (`cust_id`) ) ENGINE=INNODB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
src下新建一个domain实体包：
Customer类：
package domain; public class Customer { private Long cust_id; private String cust_name; private String cust_source; private String cust_industry; private String cust_level; private String cust_linkman; private String cust_phone; private String cust_mobile; public Long getCust_id() { return cust_id; } public void setCust_id(Long cust_id) { this.cust_id = cust_id; } public String getCust_name() { return cust_name; } public void setCust_name(String cust_name) { this.cust_name = cust_name; } public String getCust_source() { return cust_source; } public void setCust_source(String cust_source) { this.cust_source = cust_source; } public String getCust_industry() { return cust_industry; } public void setCust_industry(String cust_industry) { this.cust_industry = cust_industry; } public String getCust_level() { return cust_level; } public void setCust_level(String cust_level) { this.cust_level = cust_level; } public String getCust_linkman() { return cust_linkman; } public void setCust_linkman(String cust_linkman) { this.cust_linkman = cust_linkman; } public String getCust_phone() { return cust_phone; } public void setCust_phone(String cust_phone) { this.cust_phone = cust_phone; } public String getCust_mobile() { return cust_mobile; } public void setCust_mobile(String cust_mobile) { this.cust_mobile = cust_mobile; } @Override public String toString() { return "Customer [cust_id=" + cust_id + ", cust_name=" + cust_name + "]"; } }
在domain包中，需要配置文件：Customer.hbm.xml
配置的具体参数含义后边再讲：
<?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"> <!-- 配置表与实体对象的关系 --> <hibernate-mapping> <class name="domain.Customer" table="cst_customer" > <id name="cust_id" > <!-- generator:主键生成策略 --> <generator class="native"></generator> </id> <property name="cust_name" column="cust_name" ></property> <property name="cust_source" column="cust_source" ></property> <property name="cust_industry" column="cust_industry" ></property> <property name="cust_level" column="cust_level" ></property> <property name="cust_linkman" column="cust_linkman" ></property> <property name="cust_phone" column="cust_phone" ></property> <property name="cust_mobile" column="cust_mobile" ></property> </class> </hibernate-mapping>
核心配置文件：src目录下：
hibernate.cfg.xml（注意名字不能改）
这里没有写注释的在后边详细介绍
<?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> <!-- 数据库驱动 --> <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> <!-- 数据库url --> <property name="hibernate.connection.url">jdbc:mysql:///hibernate</property> <!-- 数据库连接用户名 --> <property name="hibernate.connection.username">root</property> <!-- 数据库连接密码 --> <property name="hibernate.connection.password">xuyiqing</property> <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property> <!-- 将hibernate生成的sql语句打印到控制台 --> <property name="hibernate.show_sql">true</property> <!-- 将hibernate生成的sql语句格式化(语法缩进) --> <property name="hibernate.format_sql">true</property> <property name="hibernate.hbm2ddl.auto">update</property> <!-- 引入orm元数据 路径书写: 填写src下的路径 --> <mapping resource="domain/Customer.hbm.xml" /> </session-factory> </hibernate-configuration>
好，到这里配置文件完成：
书写代码测试：
package test; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.Transaction; import org.hibernate.cfg.Configuration; import org.junit.Test; import domain.Customer; //测试Hibernate框架 public class Demo { @Test //保存 public void function1(){ Configuration conf = new Configuration().configure(); SessionFactory sessionFactory = conf.buildSessionFactory(); Session session = sessionFactory.openSession(); Transaction tx = session.beginTransaction(); Customer customer = new Customer(); customer.setCust_name("腾讯"); session.save(customer); tx.commit(); session.close(); sessionFactory.close(); } }
结果：
查看数据库，成功添加一条新数据
搭建测试完毕
