/**
 * Copyright &copy; 2012-2014 <a href="https://github.com/thinkgem/jeesite">JeeSite</a> All rights reserved.
 */
package com.ejweb.core.utils;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.lang.reflect.Method;

import org.apache.commons.lang3.StringUtils;

/**
 * 对象操作工具类, 继承org.apache.commons.lang3.ObjectUtils类
 * @author ThinkGem
 * @version 2014-6-29
 */
public class ObjectUtils extends org.apache.commons.lang3.ObjectUtils {

    /**
     * 注解到对象复制，只复制能匹配上的方法。
     * @param annotation
     * @param object
     */
    public static void annotationToObject(Object annotation, Object object){
        if (annotation != null){
            Class<?> annotationClass = annotation.getClass();
            Class<?> objectClass = object.getClass();
            for (Method m : objectClass.getMethods()){
                if (StringUtils.startsWith(m.getName(), "set")){
                    try {
                        String s = StringUtils.uncapitalize(StringUtils.substring(m.getName(), 3));
                        Object obj = annotationClass.getMethod(s).invoke(annotation);
                        if (obj != null && !"".equals(obj.toString())){
                            if (object == null){
                                object = objectClass.newInstance();
                            }
                            m.invoke(object, obj);
                        }
                    } catch (Exception e) {
                        // 忽略所有设置失败方法
                    }
                }
            }
        }
    }
    
    /**
     * 序列化对象
     * @param object
     * @return
     */
    public static byte[] serialize(Object object) {
        ObjectOutputStream oos = null;
        ByteArrayOutputStream baos = null;
        try {
            if (object != null){
                baos = new ByteArrayOutputStream();
                oos = new ObjectOutputStream(baos);
                oos.writeObject(object);
                return baos.toByteArray();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * 反序列化对象
     * @param bytes
     * @return
     */
    public static Object unserialize(byte[] bytes) {
        ByteArrayInputStream bais = null;
        try {
            if (bytes != null && bytes.length > 0){
                bais = new ByteArrayInputStream(bytes);
                ObjectInputStream ois = new ObjectInputStream(bais);
                return ois.readObject();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
}
