利用hibernate反向自动创建数据库

可以封装成一个java工具类，利用hibernate反向自动创建数据库，方便以后开发，提高效率。创建数据库范例：①主类package com.hzp.test;import org.hibernate.cfg.Configuration;import org.hibernate.tool.hbm2ddl.SchemaExport;public class ExportDB {public static void main(String[] args){//默认读取hibernate.cfg.xml配置文件Configuration cfg=new Configuration().configure();SchemaExport export=new SchemaExport(cfg);//创建数据库，并输出在控制—DL语句export.create(true, true);}}②表的映射类package com.hzp.hbq;import java.util.Date;public class Course {private int id;//课程id，主键private String name;//课程名称private Date time;//上课时间public int getId() {return id;}public void setId(int id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public Date getTime() {return time;}public void setTime(Date time) {this.time = time;}}③数据库表映射文件<?xml version="1.0"?><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN""http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><hibernate-mapping package="com.hzp.hbq"><class name="Course"><id name="id"><generator class="increment"></generator></id><property name="name"></property><property name="time"></property></class></hibernate-mapping>④hibernate配置文件<?xml version="1.0"?><!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN""http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"><hibernate-configuration><session-factory><!-- 数据库驱动程序 --><property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property><property name="hibernate.connection.url">jdbc:mysql:///courses</property><!-- 数据库密码 --><property name="hibernate.connection.password">515422</property><!-- 数据库用户名 --><property name="hibernate.connection.username">root</property><!-- 数据库语言 --><property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property><!-- 映射文件 --><mapping resource="com/hzp/hbq/Course.hbq.xml"/></session-factory></hibernate-configuration>

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