利用内省方式对JavaBean的属性设置和取值

package com.zchen.bean;public class Point {private int x;public int getX() {return x;}public void setX(int x) {this.x = x;}}

import java.beans.PropertyDescriptor;import java.lang.reflect.Method;public class IntroSpactorTest {public static void main(String[] args) throws Exception{Point point = new Point();String propertyName = "x";Object value = 9;setProperties(point, propertyName, value);Object val = getProperties(point, propertyName);System.out.println(val);}private static void setProperties(Object point, String propertyName,Object value) throws Exception{PropertyDescriptor pd1 = new PropertyDescriptor(propertyName, point.getClass());Method methodSetX = pd1.getWriteMethod();methodSetX.invoke(point, value);}private static Object getProperties(Object point, String propertyName) throws Exception{PropertyDescriptor pd2 = new PropertyDescriptor(propertyName, point.getClass());Method methodGetX = pd2.getReadMethod();Object retVal = methodGetX.invoke(point);return retVal;}}