获取Java Bean属性描述符

//package com.nowjava;

import java.beans.BeanInfo;//n o w  j a v a  . c o m

import java.beans.IntrospectionException;

import java.beans.Introspector;

import java.beans.PropertyDescriptor;


public class Main {

    public static void main(String[] argv) throws Exception {

        Class beanClass = String.class;

        String propertyName = "nowjava.com";

        System.out.println(getPropertyDescriptor(beanClass, propertyName));

    }
/*nowjava - 时  代  Java*/

    public static PropertyDescriptor getPropertyDescriptor(Class beanClass,

            String propertyName) {

        for (PropertyDescriptor pd : getPropertyDescriptors(beanClass)) {

            if (pd.getName().equals(propertyName)) {

                return pd;

            }

        }

        return null;

    }


    public static PropertyDescriptor[] getPropertyDescriptors(

            Class beanClass) {

        BeanInfo beanInfo = null;

        try {

            beanInfo = Introspector.getBeanInfo(beanClass);

        } catch (IntrospectionException e) {

            return (new PropertyDescriptor[0]);

        }

        PropertyDescriptor[] descriptors = beanInfo

                .getPropertyDescriptors();

        if (descriptors == null) {

            descriptors = new PropertyDescriptor[0];

        }

        return descriptors;

    }


    public static