一劳永逸——让Spring自动加载Hibernate Annotated Classes

import java.io.IOException;
import java.util.Iterator;

import org.hibernate.HibernateException;
import org.hibernate.cfg.Configuration;
import org.hibernate.mapping.PersistentClass;
import org.lc.bean.CustomClassEditor;
import org.lc.bean.CustomClassEditorManager;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.BeanFactoryAware;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.support.DefaultListableBeanFactory;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;
import org.springframework.orm.hibernate3.LocalSessionFactoryBean;

/**
 * 自动寻找所有以.hbm.xml结尾的文件，加入到Hibernate配置中
 * 并为Hibernate中定义的每一个类添加HibernateClassEditor，保证对象保存时可以通过id直接建立对象关联
 */
@SuppressWarnings("unchecked")
public class SessionFactoryBean extends LocalSessionFactoryBean implements BeanFactoryAware,BeanFactoryPostProcessor{
	
	private DefaultListableBeanFactory beanFactory;
		
	/**
	 * Spring会自动进行注入
	 * 记录BeanFactory，以在postProcessConfiguration中自动加入所有的Hibernate映射
	 */
	public void setBeanFactory(BeanFactory beanFactory) throws BeansException{
		this.beanFactory = (DefaultListableBeanFactory) beanFactory;	
	}

	/** 
	 * @see org.springframework.orm.hibernate3.LocalSessionFactoryBean#postProcessConfiguration(org.hibernate.cfg.Configuration)
	 * 
	 * 自动加入类路径中所有匹配的Hibernate映射文件
	 */
	@Override
	protected void postProcessConfiguration(Configuration config) throws HibernateException {
		ResourcePatternResolver rp = new PathMatchingResourcePatternResolver(beanFactory.getBeanClassLoader());
		
		Resource[] resources;
		try {
			resources = rp.getResources("/**/*.hbm.xml");
			for(int i=0;i<resources.length;i++){
				Resource resource = resources[i];
				
				//将找到的配置文件加入
				if(resource.exists())
					config.addInputStream(resource.getInputStream());
				
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
		
		super.postProcessConfiguration(config);		
	}

	
	
	/* 
	 * @see org.springframework.beans.factory.config.BeanFactoryPostProcessor#postProcessBeanFactory(org.springframework.beans.factory.config.ConfigurableListableBeanFactory)
	 * 在CustomClassEditorManager中加入Editor定义 
	 */
	
	
	public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
		Iterator cIter = this.getConfiguration().getClassMappings();
		
		while(cIter.hasNext()){
			PersistentClass pc = (PersistentClass) cIter.next();
			
			String className = pc.getClassName();
			//为Hibernate中定义的每一个类加入自定义的编辑器
			try {				
				CustomClassEditorManager.registerCustomEditor(Class.forName(className), new CustomClassEditor(className));
			} catch (ClassNotFoundException e) {			
				e.printStackTrace();
			}			
		}
	}
}

    <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
		<property name="dataSource" ref="dataSource"/>
		<property name="hibernateProperties">
			<props>
				<!-- 省略 -->
			</props>
		</property>
		<property name="packagesToScan">
			<list>
				<value>com.test.*.model</value>
			</list>
		</property>
    </bean>