JavaWeb学习之Hibernate框架
Posted 低调的小孩儿
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了JavaWeb学习之Hibernate框架相关的知识，希望对你有一定的参考价值。
hibernateAPI详解
Configuration
创建
加载主配置
创建sessionFactory
SessionFactory
session
获得事务
增
查
改
删
Transaction封装事务的操作
打开事务
提交事务
回滚事务
CRM练习：保存客户
CRM：customer relation manager 客户关系管理系统
１、创建web项目
２、导包
hibernate包、数据库驱动包、标签库包、BeanＵtiｌs包
３、引入静态页面
４、搭建hibernate框架
５、思路分析
６、开发
７、测试
package com.web;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.beanutils.BeanUtils;
import com.domain.Customer;
import com.service.CustomerService;
public class AddCustomerServlet extends HttpServlet {
private CustomerService customerService = new CustomerService();
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// 1、获取数据
request.setCharacterEncoding("UTF-8");
Map<String, String[]> map = request.getParameterMap();
// 2、创建对象
Customer customer = new Customer();
// 3、封装数据
try {
BeanUtils.populate(customer, map);
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvocationTargetException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// 4、调用service中的保存方法
customerService.save(customer);
// 5、重定向
response.sendRedirect(request.getContextPath()+"/ListCustomerServlet");
}
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
}
package com.service;
import com.dao.CustomerDao;
import com.domain.Customer;
public class CustomerService {
private CustomerDao customerDao = new CustomerDao();
public void save(Customer customer) {
customerDao.save(customer);
}
}
package com.dao;
import org.hibernate.Session;
import org.hibernate.Transaction;
import com.domain.Customer;
import com.util.HibernateUtil;
public class CustomerDao {
public void save(Customer customer) {
Session session = HibernateUtil.openSession();
Transaction tx = session.beginTransaction();
session.save(customer);
tx.commit();
session.close();
}
}
package com.domain;
import java.util.HashSet;
import java.util.Set;
public class Customer {
private Long cust_id;
// private String cust_id;
private String cust_name;
private Long cust_user_id;
private Long cust_create_id;
private String cust_source;
private String cust_industry;
private String cust_level;
private String cust_linkman;
private String cust_phone;
private String cust_mobile;
//表达与联系人表一对多的关系
private Set<LinkMan> linkmens =new HashSet<LinkMan>();
public Set<LinkMan> getLinkmens() {
return linkmens;
}
public void setLinkmens(Set<LinkMan> linkmens) {
this.linkmens = linkmens;
}
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 String getCust_id() {
// return cust_id;
// }
// public void setCust_id(String cust_id) {
// this.cust_id = cust_id;
// }
public void setCust_name(String cust_name) {
this.cust_name = cust_name;
}
public Long getCust_user_id() {
return cust_user_id;
}
public void setCust_user_id(Long cust_user_id) {
this.cust_user_id = cust_user_id;
}
public Long getCust_create_id() {
return cust_create_id;
}
public void setCust_create_id(Long cust_create_id) {
this.cust_create_id = cust_create_id;
}
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 + ", cust_user_id=" + cust_user_id
+ ", cust_create_id=" + cust_create_id + ", cust_source=" + cust_source + ", cust_industry="
+ cust_industry + ", cust_level=" + cust_level + ", cust_linkman=" + cust_linkman + ", cust_phone="
+ cust_phone + ", cust_mobile=" + cust_mobile + "]";
}
}
<?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 package="com.domain">
<!-- class中的name写实体类名，table写数据库中对应的表名 -->
<class name="Customer" table="cst_customer">
<!--id标签代表主键 -->
<id name="cust_id" column="cust_id">
<!-- 代表主键的生成模式 -->
<generator class="native"></generator>
<!-- identity适用于mysql主键生成策略
<generator class="identity"></generator> -->
</id>
<property name="cust_name" column="cust_name" ></property>
<property name="cust_user_id" column="cust_user_id" ></property>
<property name="cust_create_id" column="cust_create_id" ></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>
<!-- 配置一对多的关系 -->
<set name="linkmens">
<key column="lkm_cust_id"></key>
<one-to-many class="LinkMan"/>
</set>
</class>
</hibernate-mapping>
package com.util;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class HibernateUtil {
private static SessionFactory sf;
static{
//加载hibernate主配置文件
Configuration conf=new Configuration().configure();
sf=conf.buildSessionFactory();
}
//获得全新的session
public static Session openSession(){
return sf.openSession();
}
//获取一个与当前线程绑定的session
public static Session getCurrentSession(){
return sf.getCurrentSession();
}
}
<?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>
<!-- #hibernate.dialect org.hibernate.dialect.MySQLDialect
#hibernate.dialect org.hibernate.dialect.MySQLInnoDBDialect
#hibernate.dialect org.hibernate.dialect.MySQLMyISAMDialect
#hibernate.connection.driver_class com.mysql.jdbc.Driver
#hibernate.connection.url jdbc:mysql:///test
#hibernate.connection.username gavin
#hibernate.connection.password-->
<!--必须配置的5条 -->
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql:///crm?useUnicode=true&characterEncoding=UTF8</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password">123456</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<!--可选配置
#hibernate.show_sql true 自动打印sql在控制台
#hibernate.format_sql true 规范格式化打印在控制台的sql-->
<property name="hibernate.show_sql">true</property>
<property name="hibernate.format_sql">true</property>
<!-- 配置hibernate操作数据库隔离级别 -->
<!-- #hibernate.connection.isolation 4 -->
<property name="hibernate.connection.isolation">4</property>
<!-- 获得与当前线程绑定session对象时必须要配置的 -->
<property name="hibernate.current_session_context_class">thread</property>
<!-- 如果没有表就会自动生成表，如果有就会自动更新表
#hibernate.hbm2ddl.auto update -->
<property name="hibernate.hbm2ddl.auto">update</property>
<mapping resource="com/domain/Customer.hbm.xml"/>
<mapping resource="com/domain/LinkMan.hbm.xml"/>
<mapping resource="com/domain/User.hbm.xml"/>
<mapping resource="com/domain/Role.hbm.xml"/>
</session-factory>
</hibernate-configuration>
以上是关于JavaWeb学习之Hibernate框架的主要内容，如果未能解决你的问题，请参考以下文章