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Hibernate环境搭建

一、新建动态web工程

二、新建lib文件夹。引入jar

相关jar下载

三、引入jar

四、在src下新建配置文件hibernate.cfg.xml

   
   	
    		
     		
     
      com.mysql.jdbc.Driver
     		
     
      jdbc:mysql:///hibernate
     		
     
      root
     		
     
      root
     		
     		
     
      org.hibernate.dialect.MySQLDialect
     		
     		
     		
     
      true
     		
     		
     
      true
     		
     		
     
      update
     		
     		
     
      org.hibernate.connection.C3P0ConnectionProvider
     		
     		
     
      5
     		
     		
     
      20
     		
     		
     
      120
     		
     		
     
      3000
     		
     		
     
      4
     		
     		
     
      thread
     		
     		
     		
     	
    
   

五、在src下新建配置文件log4j.properties

### direct log messages to stdout ###log4j.appender.stdout=org.apache.log4j.ConsoleAppenderlog4j.appender.stdout.Target=System.errlog4j.appender.stdout.layout=org.apache.log4j.PatternLayoutlog4j.appender.stdout.layout.ConversionPattern=%d{
   ABSOLUTE} %5p %c{
   1}:%L - %m%n### direct messages to file mylog.log ###log4j.appender.file=org.apache.log4j.FileAppenderlog4j.appender.file.File=c\:mylog.loglog4j.appender.file.layout=org.apache.log4j.PatternLayoutlog4j.appender.file.layout.ConversionPattern=%d{
   ABSOLUTE} %5p %c{
   1}:%L - %m%n### set log levels - for more verbose logging change 'info' to 'debug' #### error warn info debug tracelog4j.rootLogger= info, stdout

六、建立目录结构和工具类

HibernateUtils

package com.itzheng.hibernate.utils;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.cfg.Configuration;/*Hibernate的工具类做hibernate的小练习，对configuration的configure()方法很好奇，为啥创建的对象还要执行这个方法呢。Configuration cfg = new Configuration().configure();原来configure()方法默认会在classpath下面寻找hibernate.cfg.xml文件，如果没有找到该文件，系统会打印如下信息并抛出HibernateException异常。其实不使用configure()方法也可以Configuration cfg = new Configuration();这时hibernate会在classpath下面寻找hibernate.properties文件，如果没有找到该文件，系统会打印如下信息并抛出HibernateException异常。 */public class HibernateUtils {
   	public static final Configuration cfg;	public static final SessionFactory sf;	static {
   		cfg = new Configuration().configure();// 获取与数据库的链接的配置文件		sf = cfg.buildSessionFactory();//开启事务建立与数据库之间的链接	}	public static Session openSession() {
   		return sf.openSession();	}	public static Session getCurrentSession() {
   		return sf.getCurrentSession();	}}

七、建立数据库

八、创建domian包,以及测试类

package com.itzheng.hibernate.domain;import java.util.HashSet;import java.util.Set;/* * 客户的实体 */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_phone;	private String cust_mobile;	// 一个客户有多个联系人	// 通过ORM的方式表示：一个客户对应多个联系人。	// 放置的是多的一方的集合。Hibernate默认使用的是Set集合。	private Set
   
     linkMans = new HashSet
    
     ();	public Long getCus_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_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;	}	public Set
     
       getLinkMans() {
   		return linkMans;	}	public void setLinkMans(Set
      
        linkMans) {
   		this.linkMans = linkMans;	}}
      
     
    
   

Customer.hbm.xml

LinkMan

package com.itzheng.hibernate.domain;/* * 联系人的实体 * CREATE TABLE `cst_linkman` (  `lkm_id` BIGINT(32) NOT NULL AUTO_INCREMENT COMMENT '联系人编号(主键)',  `lkm_name` VARCHAR(16) DEFAULT NULL COMMENT '联系人姓名',  `lkm_cust_id` BIGINT(32) DEFAULT NULL COMMENT '客户id',  `lkm_gender` CHAR(1) DEFAULT NULL COMMENT '联系人性别',  `lkm_phone` VARCHAR(16) DEFAULT NULL COMMENT '联系人办公电话',  `lkm_mobile` VARCHAR(16) DEFAULT NULL COMMENT '联系人手机',  `lkm_email` VARCHAR(64) DEFAULT NULL COMMENT '联系人邮箱',  `lkm_qq` VARCHAR(16) DEFAULT NULL COMMENT '联系人qq',  `lkm_position` VARCHAR(16) DEFAULT NULL COMMENT '联系人职位',  `lkm_memo` VARCHAR(512) DEFAULT NULL COMMENT '联系人备注',  PRIMARY KEY (`lkm_id`),  KEY `FK_cst_linkman_lkm_cust_id` (`lkm_cust_id`),  CONSTRAINT `FK_cst_linkman_lkm_cust_id` FOREIGN KEY (`lkm_cust_id`) REFERENCES `cst_customer` (`cust_id`) ON DELETE NO ACTION ON UPDATE NO ACTION) ENGINE=INNODB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8; *  */public class LinkMan {
   	private Long lkm_id;	private String lkm_name;	private String lkm_gender;	private String lkm_phone;	private String lkm_mobile;	private String lkm_email;	private String lkm_qq;	private String lkm_position;	private String lkm_memo;	//一个客户有多个联系人	//一个联系人属于一个客户	//通过ORM方式表示，一个联系人只能属于某一个客户	//放置的是一的一方的对象。	private Customer customer;	public Long getLkm_id() {
   		return lkm_id;	}	public void setLkm_id(Long lkm_id) {
   		this.lkm_id = lkm_id;	}	public String getLkm_name() {
   		return lkm_name;	}	public void setLkm_name(String lkm_name) {
   		this.lkm_name = lkm_name;	}	public String getLkm_gender() {
   		return lkm_gender;	}	public void setLkm_gender(String lkm_gender) {
   		this.lkm_gender = lkm_gender;	}	public String getLkm_phone() {
   		return lkm_phone;	}	public void setLkm_phone(String lkm_phone) {
   		this.lkm_phone = lkm_phone;	}	public String getLkm_mobile() {
   		return lkm_mobile;	}	public void setLkm_mobile(String lkm_mobile) {
   		this.lkm_mobile = lkm_mobile;	}	public String getLkm_email() {
   		return lkm_email;	}	public void setLkm_email(String lkm_email) {
   		this.lkm_email = lkm_email;	}	public String getLkm_qq() {
   		return lkm_qq;	}	public void setLkm_qq(String lkm_qq) {
   		this.lkm_qq = lkm_qq;	}	public String getLkm_position() {
   		return lkm_position;	}	public void setLkm_position(String lkm_position) {
   		this.lkm_position = lkm_position;	}	public String getLkm_memo() {
   		return lkm_memo;	}	public void setLkm_memo(String lkm_memo) {
   		this.lkm_memo = lkm_memo;	}	public Customer getCustomer() {
   		return customer;	}	public void setCustomer(Customer customer) {
   		this.customer = customer;	}}

LinkMan.hbm.xml

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