设定栏位

/**

 * Copyright 2008-2009 the original author or authors.

 *

 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in

 * compliance with the License. You may obtain a copy of the License at:

 *

 * http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software distributed under the License is

 * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and limitations under the License. 

 */

//package com.nowjava;

import java.beans.IntrospectionException;

import java.beans.PropertyDescriptor;/**来 自 时 代 J a v a**/


import java.lang.reflect.Field;

import java.lang.reflect.InvocationTargetException;

import java.lang.reflect.Method;


public class Main {



    public static void setField(Object parent, String fieldName,

            Object value) {

        try {

            Method method = findSetter(parent, fieldName);

            if (method != null) {

                method.setAccessible(true);

                method.invoke(parent, new Object[] { value });

            } else {

                Field field = parent.getClass().getDeclaredField(fieldName);

                field.setAccessible(true);// from 时   代    Java - nowjava.com

                field.set(parent, value);

            }

        } catch (IllegalAccessException e) {

            throw new RuntimeException(e);

        } catch (InvocationTargetException e) {

            throw new RuntimeException(e);

        } catch (NoSuchFieldException e) {

            throw new IllegalArgumentException("Field '" + fieldName

                    + "' was not found on " + parent.getClass().getName());

        }

    }


    private static Method