设置bean的属性时，该属性的Class必须与v的Class相同；

/**

 *all rights reserved,@copyright 2003

 */

import java.lang.reflect.Method;

import java.lang.reflect.InvocationTargetException;

import java.util.ArrayList;
/*
N o w  J a v a  . c o m 提 供
*/

import java.util.HashMap;


public class Main{

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

        Object bean = "nowjava.com";

        String propertyName = "nowjava.com";

        Object v = "nowjava.com";

        setBeanProperty(bean,propertyName,v);
        /* 
         来自 
        *N o w J a v a . c o m - 时代Java*/

    }

    public static final String PROPERTY_SET_METHOD_PREFIX = "set";

    /**

     * set a bean's property, the Class of the property must be the same as the Class

     * of v;

     *

     * @param bean         the target bean object;

     * @param propertyName the property name;

     * @param v            the property value;

     * @throws com.cots.bean.NoSuchPropertyException if the bean has no this property;

     * @throws SetPropertyException    if has no acceess to this property,or nested Exception is thrown when

     *                                 call the setMethod

     */

    public static void setBeanProperty(Object bean, String propertyName,

            Object v) throws NoSuchPropertyException, SetPropertyException {

        Class propertyClass = v.getClass();

        setBeanProperty(bean, propertyName, propertyClass, v);

    }

    /**

     * set a bean's property.

     *

     * @param bean          the target bean object;

     * @param propertyName  the property name;

     * @param propertyClass the Class of the property;

     * @param v             the property value;

     * @throws NoSuchPropertyException if the bean has no this property;

     * @throws com.cots.bean.SetPropertyException    if has no acceess to this property,or nested Exception is thrown when

     *                                 call the setMethod

     */

    public static void setBeanProperty(Object bean, String propertyName,

            Class propertyClass, Object v) throws NoSuchPropertyException,

            SetPropertyException {

        String methodName = BeanUtil.PROPERTY_SET_METHOD_PREFIX

                + Character.toUpperCase(propertyName.charAt(0))

                + propertyName.substring(1);

        Class[] clz = new Class[1];

        clz[0] = propertyClass;

        try {

            Method m = getMethod(bean, methodName, clz);

            m.invoke(bean, new Object[] { v });

        } catch (NoSuchMethodException e) {

            throw new NoSuchPropertyException(bean.getClass().getName(),

                    propertyName, propertyClass.getName());

        } catch (IllegalAccessException e) {

            throw new SetPropertyException("illegal access to property:"

                    + propertyName);

        } catch (InvocationTargetException e) {

            throw new SetPropertyException(e.getTargetException()

                    .getMessage());

        }

    }

    /**

     *

     *

     * @param o

     * @param methodName

     * @param paramTypes

     * @return

     * @throws NoSuchMethodException

     */

    public static