Hibernate的入门(增删改查):

 1 package com.itheima.domain; 2 ?3 /* 4 ?* 客户的javaBean 5 ?* @author chenyanlong 6 ?*/ 7 public class Customer { 8 ????private Long cust_id; 9 ????private String cust_name;10 ????private Long cust_user_id;11 ????private Long cust_create_id;12 ????private String cust_source;13 ????private String cust_industry;14 ????private String cust_level;15 ????private String cust_linkman;16 ????private String cust_phone;17 ????private String cust_mobile;18 ????public Long getCust_id() {19 ????????return cust_id;20 ????}21 ????public void setCust_id(Long cust_id) {22 ????????this.cust_id = cust_id;23 ????}24 ????public String getCust_name() {25 ????????return cust_name;26 ????}27 ????public void setCust_name(String cust_name) {28 ????????this.cust_name = cust_name;29 ????}30 ????public Long getCust_user_id() {31 ????????return cust_user_id;32 ????}33 ????public void setCust_user_id(Long cust_user_id) {34 ????????this.cust_user_id = cust_user_id;35 ????}36 ????public Long getCust_create_id() {37 ????????return cust_create_id;38 ????}39 ????public void setCust_create_id(Long cust_create_id) {40 ????????this.cust_create_id = cust_create_id;41 ????}42 ????public String getCust_source() {43 ????????return cust_source;44 ????}45 ????public void setCust_source(String cust_source) {46 ????????this.cust_source = cust_source;47 ????}48 ????public String getCust_industry() {49 ????????return cust_industry;50 ????}51 ????public void setCust_industry(String cust_industry) {52 ????????this.cust_industry = cust_industry;53 ????}54 ????public String getCust_level() {55 ????????return cust_level;56 ????}57 ????public void setCust_level(String cust_level) {58 ????????this.cust_level = cust_level;59 ????}60 ????public String getCust_linkman() {61 ????????return cust_linkman;62 ????}63 ????public void setCust_linkman(String cust_linkman) {64 ????????this.cust_linkman = cust_linkman;65 ????}66 ????public String getCust_phone() {67 ????????return cust_phone;68 ????}69 ????public void setCust_phone(String cust_phone) {70 ????????this.cust_phone = cust_phone;71 ????}72 ????public String getCust_mobile() {73 ????????return cust_mobile;74 ????}75 ????public void setCust_mobile(String cust_mobile) {76 ????????this.cust_mobile = cust_mobile;77 ????}78 ????@Override79 ????public String toString() {80 ????????return "Customer [cust_id=" + cust_id + ", cust_name=" + cust_name + ", cust_user_id=" + cust_user_id81 ????????????????+ ", cust_create_id=" + cust_create_id + ", cust_source=" + cust_source + ", cust_industry="82 ????????????????+ cust_industry + ", cust_level=" + cust_level + ", cust_linkman=" + cust_linkman + ", cust_phone="83 ????????????????+ cust_phone + ", cust_mobile=" + cust_mobile + "]";84 ????}85 86 ????87 }

 1 package com.itheima.utils; 2 ?3 import javax.servlet.jsp.jstl.core.Config; 4 ?5 import org.hibernate.Session; 6 import org.hibernate.SessionFactory; 7 import org.hibernate.cfg.Configuration; 8 ?9 /*10 ?* Hibernate框架的工具11 ?* @author chenyanlong12 ?*/13 public class HibernateUtils {14 15 ????//Curl+shift+x16 ????private static final Configuration CONFIG;17 ????private static final SessionFactory FACTORY;18 ????19 ????//编写静态代码20 ????static {21 ????????//加载配置文件22 ????????CONFIG =new Configuration().configure();23 ????????//构造工厂24 ????????FACTORY=CONFIG.buildSessionFactory();25 ????}26 ????27 ????/*28 ?????* 从工厂获取Session对象29 ?????* @return30 ?????*/31 ????public static Session getSession() {32 ????????return FACTORY.openSession();33 ????????34 ????}35 }

 1 /* 2 ?????* 1 保存数据 3 ?????*/ 4 ????@Test 5 ????public void testSave(){ 6 ????????/* 7 ?????????* 1.先加载配置文件 8 ?????????* 2.创建SessionFactory对象，生成Session对象 9 ?????????* 3.创建Sesison对象10 ?????????* 4.开启事务11 ?????????* 5.编写保存代码12 ?????????* 6.提交事务13 ?????????* 7.释放资源14 ?????????*/15 ????????16 ????????//1.加载配置文件17 ????????Configuration config=new Configuration();18 ????????//默认加载src目录下hibernate.cfg.xml的配置文件19 ????????config.configure();20 ????????//2.创建SessionFactory对象21 ????????SessionFactory factory=config.buildSessionFactory();22 ????????//3.创建session对象23 ????????Session session=factory.openSession();24 ????????//4.开启事务25 ????????Transaction tr= ?session.beginTransaction();26 ????????27 ????????//5.编写保存代码28 ????????Customer customer = new Customer();29 ????????customer.setCust_name("小李");30 ????????customer.setCust_source("小广告");31 32 ????????33 ????????session.save(customer);34 ????????//6.提交事务35 ????????tr.commit();36 ????????37 ????????//7.释放资源38 ????????session.close();39 ????????factory.close();40 ????}41 ????

 1 ????/* 2 ?????* 2 测试工具类 3 ?????*/ 4 ????@Test 5 ????public void testSave2(){ 6 ????????//原来:加载配置文件，获取Factory对象，获取Session 7 ????????Session session=HibernateUtils.getSession(); 8 ????????Transaction tr=session.beginTransaction(); 9 ????????Customer c=new ?Customer();10 ????????c.setCust_name("小陈");11 ????????session.save(c);12 ????????13 ????????//提交事务14 ????????tr.commit();15 ????????//释放资源16 ????????session.close();17 ????????18 ????}

 1 ????/* 2 ?????* 3 测试get()方法,获取查询，通过主键查询一条记录 3 ?????*/ 4 ????@Test 5 ????public void testSave3(){ 6 ????????//原来:加载配置文件，获取Factory对象，获取Session 7 ????????Session session=HibernateUtils.getSession(); 8 ????????Transaction tr=session.beginTransaction(); 9 ????????10 ????????//测试查询的两个参数，arg0查询javaBean的class对象，arg1主键的值11 ????????Customer c=session.get(Customer.class, 95L);12 ????????System.out.println(c);13 ????????14 ????????15 ????????//提交事务16 ????????tr.commit();17 ????????//释放资源18 ????????session.close(); ???19 ????}

 1 ????/* 2 ?????* 4 测试删除的方法 3 ?????* 注意:删除或者修改，先查询再删除或者修改 4 ?????*/ 5 ????@Test 6 ????public void testDel(){ 7 ????????//原来:加载配置文件，获取Factory对象，获取Session 8 ????????Session session=HibernateUtils.getSession(); 9 ????????Transaction tr=session.beginTransaction();10 ????????11 ????????//测试查询的两个参数，arg0查询javaBean的class对象，arg1主键的值12 ????????Customer c=session.get(Customer.class, 95L);13 ????????System.out.println(c);14 ????????15 ????????//删除客户16 ????????session.delete(c);17 ????????18 ????????//提交事务19 ????????tr.commit();20 ????????//释放资源21 ????????session.close(); ???22 ????}23 ????

 1 /* 2 ?????*5 测试修改 3 ?????*/ 4 ????@Test 5 ????public void testUpdate(){ 6 ????????//原来:加载配置文件，获取Factory对象，获取Session 7 ????????Session session=HibernateUtils.getSession(); 8 ????????Transaction tr=session.beginTransaction(); 9 ????????10 ????????//测试查询的两个参数，arg0查询javaBean的class对象，arg1主键的值11 ????????Customer c=session.get(Customer.class, 94L);12 ????????System.out.println(c);13 ????????14 ????????//设置客户信息15 ????????c.setCust_name("小龙虾");16 ????????17 ????????//修改或是更新18 ????????session.update(c);19 ????????20 ????????//session.saveOrUpdate(c); 添加或是修改21 ????????//提交事务22 ????????tr.commit();23 ????????//释放资源24 ????????session.close(); ???25 ????}

 1 /* 2 ?????* 测试查询方法 3 ?????*/ 4 ????@Test 5 ????public void testSel() { 6 ????????//加载配置文件 7 ????????Session session =HibernateUtils.getSession(); 8 ????????Transaction tr=session.beginTransaction(); 9 ????????10 ????????//创建查询的接口11 ????????Query query=session.createQuery("from Customer");12 ????????13 ????????//查询所有的数据14 ????????List<Customer> list=query.list();15 ????????for(Customer customer:list) {16 ????????????System.out.println(customer);17 ????????}18 ????????19 ????????//提交事务20 ????????tr.commit();21 ????????22 ????????//释放资源23 ????????session.close();24 ????????25 ????}