1.Item.hbm.xml

2.Category.hbm.xml

3.tiem.java

package com.huangliusng.entity.n2n;public class Item {	private int I_id;	private String I_name;	public int getI_id() {		return I_id;	}	public void setI_id(int i_id) {		I_id = i_id;	}	public String getI_name() {		return I_name;	}	public void setI_name(String i_name) {		I_name = i_name;	}	}

4.Category.java

package com.huangliusng.entity.n2n;import java.util.HashSet;import java.util.Set;public class Category {	private int c_id;	private String c_name;	public int getC_id() {		return c_id;	}	public void setC_id(int c_id) {		this.c_id = c_id;	}	public String getC_name() {		return c_name;	}	public void setC_name(String c_name) {		this.c_name = c_name;	}	public Set
    
      getC_items() {		return c_items;	}	public void setC_items(Set
     
       c_items) {		this.c_items = c_items;	}	private Set
      
        c_items=new HashSet
       
        ();	}
       
      
     
    

5.test.java

package com.huangliusng.test;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.Transaction;import org.hibernate.cfg.Configuration;import org.hibernate.service.ServiceRegistry;import org.hibernate.service.ServiceRegistryBuilder;import org.junit.After;import org.junit.Before;import org.junit.Test;import com.huangliusng.entity.n2n.Category;import com.huangliusng.entity.n2n.Item;public class TestHibernate6 {	private static SessionFactory sessionFactory;	private static Session session;	private static Transaction transaction;	@Before	public void init() {		// 1.创建配置对象		Configuration config = new Configuration().configure();		// 2.服务注册对象		ServiceRegistry serviceRegistry = new ServiceRegistryBuilder()				.applySettings(config.getProperties()).buildServiceRegistry();		// 3.创建会话工厂		sessionFactory = config.buildSessionFactory(serviceRegistry);		// 4.创建会话		session = sessionFactory.openSession();		// 5.打开会话		transaction = session.beginTransaction();	}	@After	public void destory() {		transaction.commit();		session.close();		sessionFactory.close();	}	@Test	public void ManyToMany() {		Category category1=new Category();		category1.setC_name("分类1");				Category category2=new Category();		category2.setC_name("分类2");				Item item1=new Item();		item1.setI_name("内容1");		Item item2=new Item();		item2.setI_name("内容2");						//设定关联关系		category1.getC_items().add(item1);		category1.getC_items().add(item2);				category2.getC_items().add(item1);		category2.getC_items().add(item2);		//执行关联关系																	session.save(category1);		session.save(category2);				session.save(item1);		session.save(item2);	}}