java类反射机制

使用java.beans包下的类进行反射javaBean，代码如下:

import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Method;

public class BeanUtil {
	
	
	public static void readBeanProperties(Class<?> clazz)throws Exception{
		
		PropertyDescriptor[]descriptors = null ;
		descriptors = Introspector.getBeanInfo( clazz ).getPropertyDescriptors() ;
		if( descriptors != null && descriptors.length > 0){
			for(PropertyDescriptor descriptor : descriptors){
				Method readMethod = descriptor.getReadMethod() ; 
				Method writeMethod = descriptor.getWriteMethod() ;
				if(readMethod != null && writeMethod != null){
					System.out.println( "属性名称：" + descriptor.getName() +
							" 读取属性方法：" + readMethod.getName()
							+ " 写入属性方法" + writeMethod.getName() ); 
				}
			}
		}
	}
	
	public static void main(String[] args)throws Exception{
		readBeanProperties( Person.class ) ; 
	}
	
}