实战3--设计管理模块, 第一步: 设计实体类和表

1. 设计实体类/表

2. 分析有几个功能, 对应几个请求

3. 实现功能

    1. 写action

    2. 写service

    3. 写Dao

    4. 写jsp

 

1. 先设计岗位类Role

    建实体类--> hbm.xml-->建表  (创建sessionFactory)  

package cn.itcast.oa.domain;

public class Role {
	private Long id;
	private String name;
	private String description;
	
	public Long getId() {
		return id;
	}
	public String getName() {
		return name;
	}
	public String getDescription() {
		return description;
	}
	public void setId(Long id) {
		this.id = id;
	}
	public void setName(String name) {
		this.name = name;
	}
	public void setDescription(String description) {
		this.description = description;
	}		
}

2. Role.hbm.xml:

    

<?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="cn.itcast.oa.domain">
	<class name="Role" table="itcast_role">
		<id name="id">
			<generator class="native"></generator>
		</id>
		<property name="name" />
		<property name="description" />
	</class>
</hibernate-mapping>

3. hibernate.cfg.xml:

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
	<session-factory>
		<!-- Database connection settings -->
		<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
					
		<!-- 2. other configuration -->
		<property name="show_sql">true</property>
		<property name="hbm2ddl.auto">update</property>
		<property name="connection.pool_size">1</property>

		<!--3. mapping -->
		<mapping resource="cn/itcast/oa/domain/User.hbm.xml" />
		<mapping resource="cn/itcast/oa/domain/Role.hbm.xml" />		
	</session-factory>
</hibernate-configuration>

4. 测试数据表有没有新建, 数据表在新建sessionFactory的时候创建:

　

package cn.itcast.oa.test;

import org.hibernate.SessionFactory;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class SpringTest {
	private ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
	@Test
	public void testSessionFactory() throws Exception{
		SessionFactory sessionFactory = (SessionFactory)ac.getBean("sessionFactory");
		System.out.println(sessionFactory);
		
	}
	
}

然后去数据库检查表有没有生成