java web从零单排第二十四期《hibernate》常用数据类型(1)
这一期主要介绍如何操作一些基本的数据类型，由于只涉及到hibernate本身，就不用web工程了，我们建立一个java工程就可以工程名为hibernate2：
1.
点击Add Hibernate Capablities
点击next：
点击next：
点击next：
finish完成创建。
把上个工程的hibernate.cfg.xml文件到新建的工程，选择yes to all：
添加sql2008jar包：
点击configure Build Path...：
点击Add External JARS找到自己的驱动包位置即可：
2.新建数据库customer：
首先对数据类型进行分析：
bigint：long类型。
varchar：字符串类型。
int：整型。
bit：bool类型。
date：时间类型。
timestamp：时间类型，精确度更高，可以精确到毫秒。
image：大数据类型，即二进制文件，如文件的存储。
3.新建包com.test.bean，添加类Customers.java:
package com.test.bean;import java.sql.Timestamp;import java.util.Date;public class Customers{private Long id;private String name;private String email;private String password;private int phone;private String address; private char sex;private boolean married;private String description;private Date birthday;private Timestamp registeredTime;private byte[] image;public Long getId(){return id;}public void setId(Long id){this.id = id;}public String getName(){return name;}public void setName(String name){this.name = name;}public String getEmail(){return email;}public void setEmail(String email){this.email = email;}public String getPassword(){return password;}public void setPassword(String password){this.password = password;}public int getPhone(){return phone;}public void setPhone(int phone){this.phone = phone;}public String getAddress(){return address;}public void setAddress(String address){this.address = address;}public char getSex(){return sex;}public void setSex(char sex){this.sex = sex;}public boolean isMarried(){return married;}public void setMarried(boolean married){this.married = married;}public String getDescription(){return description;}public void setDescription(String description){this.description = description;}public Date getBirthday(){return birthday;}public void setBirthday(Date birthday){this.birthday = birthday;}public Timestamp getRegisteredTime(){return registeredTime;}public void setRegisteredTime(Timestamp registeredTime){this.registeredTime = registeredTime;}public byte[] getImage(){return image;}public void setImage(byte[] image){this.image = image;}}
新建Customer.hbm.xml文件：
<?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.test.bean.Customers" table="customers"> <id name="id" column="id" type="long"> <generator class="increment"><!-- 主键id的生成方式 --> </generator> </id> <property name="name" column="name" type="string" not-null="true"></property> <property name="address" column="address" type="string" not-null="true"></property> <property name="birthday" column="birthday" type="date" not-null="true"></property> <property name="description" column="description" type="string"></property> <property name="password" column="password" type="string"></property> <property name="phone" column="phone" type="int"></property> <property name="married" column="is_married" type="boolean"></property> <property name="image" column="image" type="binary"></property> <property name="registeredTime" column="registered_time" type="timestamp" insert="false" update="false"></property> <property name="sex" column="sex" type="character"></property> <property name="email" column="email" type="string"></property> </class></hibernate-mapping>
找到hibernate.cfg.xml文件：
<?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="show_sql" >true</property> <property name="connection.url">jdbc:sqlserver://127.0.0.1:1433;DatabaseName=hibernate2</property> <property name="connection.username">sa</property> <property name="connection.password">57829707</property> <property name="connection.driver_class">com.microsoft.sqlserver.jdbc.SQLServerDriver</property> <property name="dialect">org.hibernate.dialect.SQLServerDialect</property> <mapping resource="Customers.hbm.xml"/> </session-factory></hibernate-configuration>
下一期会进行一些测试，Thank you！！