Hibernate demo之使用xml
1.新建maven项目 testHibernate,pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion> <groupId>testHiberate</groupId>
<artifactId>testHiberate</artifactId>
<version>1.0-SNAPSHOT</version> <dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency> <!-- 添加Hibernate依赖 -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>3.6.10.Final</version>
</dependency> <!-- 添加Log4J依赖 -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.16</version>
</dependency> <dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-nop</artifactId>
<version>1.6.4</version>
</dependency> <!-- 添加javassist -->
<dependency>
<groupId>javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.12.0.GA</version>
</dependency> <!-- mysql数据库的驱动包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
</dependencies> </project>
2.新建类Event
package com.demo; import java.util.Date; public class Event { private Long id;//id
private String title;//标题
private Date date;//日期
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
}
3.在resource/mapper文件夹下新建Event.hbm.xml
<?xml version="1.0"?>
<!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.demo"> <class name="com.demo.Event" table="EVENTS"> <id name="id" column="EVENT_ID"> <generator class="assigned"/> </id> <property name="date" type="timestamp" column="EVENT_DATE"/> <property name="title"/> </class> </hibernate-mapping >
4.在resource文件夹下新建hibernate.cfg.xml
<?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>
<!-- Database connection settings -->
<property name="connection.driver_class">org.gjt.mm.mysql.Driver</property>
<property name="connection.url">jdbc:mysql://192.168.32.95:3306/db2</property>
<property name="connection.username">DB_WX_APP</property>
<property name="connection.password">LH_longfor</property>
<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">1</property>
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<!-- Enable Hibernate's automatic session context management -->
<property name="current_session_context_class">thread</property>
<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property> <!-- Echo all executed SQL to stdout -->
<property name="show_sql">true</property>
<property name="format_sql">true</property>
<!-- Drop and re-create the database schema on startup -->
<property name="hbm2ddl.auto">update</property>
<mapping resource="mapper/Event.hbm.xml"/>
</session-factory>
</hibernate-configuration>
5.新建辅助类 HibernateUtil
package com.demo; import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration; public class HibernateUtil { //定义静态的SessionFactory,产生单例,只生成一个SessionFactory
private static final SessionFactory sessionFactory = buildSessionFactory(); //用来初始化SessionFactory
private static SessionFactory buildSessionFactory() { try { // Create the SessionFactory from hibernate.cfg.xml return new Configuration().configure().buildSessionFactory(); } catch (Throwable ex) { // Make sure you log the exception, as it might be swallowed System.err.println("Initial SessionFactory creation failed." + ex); throw new ExceptionInInitializerError(ex); } }
//得到SessionFactory
public static SessionFactory getSessionFactory() { return sessionFactory;//返回SessionFactory的对象 } }
6.新建Test类
package com.demo; import java.util.Date;
import java.util.List; import org.hibernate.Session;
public class Test {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Test mgr = new Test();
//if (args[0].equals("store")) {
//mgr.createAndStoreEvent("My Event1", new Date());//调用函数插入数据
//}
mgr.getList();
// mgr.Get();//单个查询
HibernateUtil.getSessionFactory().close();
}
private void createAndStoreEvent(String title, Date theDate) { //得到目前运行的session
Session session = HibernateUtil.getSessionFactory().getCurrentSession(); session.beginTransaction();//开始事务
Event theEvent = new Event();//创建bean对象
theEvent.setTitle(title);//设置标题
theEvent.setId(100002L);
theEvent.setDate(theDate);//设置日期
session.save(theEvent);//保存对象
session.getTransaction().commit();//提交事务 } private void Get() { //得到目前运行的session
Session session = HibernateUtil.getSessionFactory().getCurrentSession();
session.beginTransaction();
Event theEvent = new Event();//创建bean对象
theEvent.setId(100001L);
Event e=(Event) session.get(Event.class,100001L);
System.out.println(e.getTitle());
session.getTransaction().commit(); } void getList(){
Session session=HibernateUtil.getSessionFactory().getCurrentSession();
session.beginTransaction();
List<Event> list= session.createSQLQuery("select * from EVENTS").addEntity(Event.class).list();
for(Event e:list){ System.out.println(e.getTitle());
}
session.getTransaction().commit();
} }
运行Test类即可
https://pan.baidu.com/s/1fhnr4SWTkqd0RAdGniAMtA
Hibernate demo之使用xml的更多相关文章
- 基本hibernate DEMO
Hibernate常用API: 1Configuration: 负责加载主配置文件信息,同时也加载映射关系文件信息. 2SessionFactory 负责创建Session对象. 3Session 数 ...
- eclipse hibernate配置文件(*.hbm.xml)加上自动提示功能
转自:https://blog.csdn.net/u012217085/article/details/17397843?utm_source=blogkpcl3 1. 标签:hibernate 在编 ...
- Hibernate demo之使用注解
1.新建maven项目 testHibernate,pom.xml <?xml version="1.0" encoding="UTF-8"?> & ...
- MyEclipse10中自动生成Hibernate的实体和xml配置文件
前提:1.在项目中添加Hibernate支持 2.MyEclipse中已经创建好数据库连接 3.表已经建好并且有主键 步骤如下: 1.在DB Browser窗口的已打开连接节点中选中用户创建的所有的表 ...
- hibernate ——helloWorld程序(XML配置)
1.项目结构 2.hibernate实现了Java类 和 数据库表的映射(Map) 先看一下Student的Java类和对应的数据库表 package com.pt.hibernate; public ...
- spring,hibernate配置事务 beans.xml
beans.xml <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="htt ...
- Hibernate注解配置与XML配置区别
注解配置的方式与xml很很多类似: 首先是需要加入4个jar包:hibernate-commons-annotations.jar . hibernate-annotations.jar.ejb3-p ...
- eclipse中hibernate和mybatis中xml配置文件的没有标签提醒解决方法
当我们使用eclipse编写Mybatis或hibernate的xml文件时,面对众多标签的配置文件,却没有自动提醒,对于工作和学习都十分不方便. 之所以没有自动提醒,是因为dtd文件没有加载成功. ...
- intellij配置hibernate自动生成hbm.xml文件
1.首先创建一个Java web项目,这里因为已经在整个项目中配置好tomcat了,所以我是直接创建module的,其实和创建project的配置方法一样,创建的时候选择Web Application ...
随机推荐
- webpack最佳入门实践系列(2)
3.插件 在前端迅速发展的今天,许多没有太多技术含量并且感觉是在浪费时间的事情,就可以交给构建工具来做,例如:我们去手动创建index.html,手动引入打包好的js文件等操作,都可以叫个webpac ...
- BZOJ 2813: 奇妙的Fibonacci
2813: 奇妙的Fibonacci Time Limit: 20 Sec Memory Limit: 512 MBSubmit: 497 Solved: 134[Submit][Status][ ...
- 524. Longest Word in Dictionary through Deleting
Given a string and a string dictionary, find the longest string in the dictionary that can be formed ...
- LeetCode OJ-- Merge k Sorted Lists *@
https://oj.leetcode.com/problems/merge-k-sorted-lists/ 这道题主要是考虑测试数据的特点吧. 刚开始的时候想,每次找出头结点中最小的两个,然后取最小 ...
- map、hash_map、unordered_map 的思考
#include <map> map<string,int> dict; map是基于红黑树实现的,可以快速查找一个元素是否存在,是关系型容器,能够表达两个数据之间的映射关系. ...
- C# 数组与 list 互相转换案例
在项目中用到了 随手分享下 记得点赞呦! 1,从System.String[]转到List<System.String>System.String[] str={"str&quo ...
- Codeforces 754A(搜索)
设s[i][j]为序列i到j的和,当s[i][j]≠0时,即可从i跳到j+1.目标为从1跳到n+1,所以按照题意暴力即可. #include <bits/stdc++.h> using n ...
- weblogic内存快速配置
# IF USER_MEM_ARGS the environment variable is set, use it to override ALL MEM_ARGS values USER_MEM_ ...
- SpringBoot 分包方式多数据源
1.引入依赖 <parent> <groupId>org.springframework.boot</groupId> <artifactId>spri ...
- usaco-Cow Pedigrees
题意: 求出n个节点可以构成多少种高为h的二叉树.分析: 设左子树节点数x,右子树节点数为n-x-1,函数dp表示满足条件的树的个数,则dp(n)=dp(x)*(n-x-1). 对于未知数h,dp[n ...