复制Java Bean属性

/**
nowjava.com - 时代Java
**/


//package com.nowjava;

import java.lang.reflect.Field;

import java.lang.reflect.InvocationTargetException;

import java.lang.reflect.Method;


public class Main {



    @SuppressWarnings("unchecked")

    public static void copyProperties(Object target, Object source)

            throws Exception {


        Class sourceClz = source.getClass();

        Class targetClz = target.getClass();
/**来 自 n o w j a v a . c o m - 时  代  Java**/

        Field[] fields = sourceClz.getDeclaredFields();

        for (int i = 0; i < fields.length; i++) {

            String fieldName = fields[i].getName();

            Field targetField = null;

            try {

                // targetClz?fieldName?

                targetField = targetClz.getDeclaredField(fieldName);

            } catch (SecurityException e) {

                e.printStackTrace();

                break;

            } catch (NoSuchFieldException e) {

                continue;

            }

            // sourceClz?targetClz

            if (fields[i].getType() == targetField.getType()) {

                // ?get?set?

                String getMethodName = "get"

                        + fieldName.substring(0, 1).toUpperCase()

                        + fieldName.substring(1);

                String setMethodName = "set"

                        + fieldName.substring(0, 1).toUpperCase()

                        + fieldName.substring(1);

                // get?set?Method

                Method getMethod;

                try {

                    getMethod = sourceClz.getDeclaredMethod(getMethodName,

                            new Class[] {});

                    Method setMethod = targetClz.getDeclaredMethod(

                            setMethodName, fields[i].getType());

                    // source?getMethod

                    Object result = getMethod.invoke(source,

                            new Object[] {});

                    // target?setMethod

                    if (result != null) {

                        if (!((result instanceof String) && ""

                                .equals(result.toString()))

                                && !((result instanceof Integer) && (Integer) result <= 0)

                                && !((result instanceof Long) && (Long) result <= 0)) {

                            setMethod.invoke(target, result);

                        }

                    }

                } catch (SecurityException e) {

                    e.printStackTrace();

                } catch (