请看具体实现,注释详细. 觉得用的上的朋友麻烦点个赞.自己写的实用小工具.
使用的时候直接继承自BaseModel 就可以了

    //字典转模型
    let model = BaseModel.init(dict: dic)
    
    //一句话快速归档,括号内输入单个模型或者模型数组
    model.archiverWithRootObject([model1, model2, model3])

    //一句话快速解档.无论你存入的是单个对象还是数组
    let modelArray = account.unarchiver()

一句话归档效果,数据是本人的微博信息.

怎么样?是不是非常的cool,以下是两个语言版本的具体实现,希望用的同时能认真看注释,理解其中简单的原理.

OC版本

#import <Foundation/Foundation.h>
#import <objc/runtime.h>

@implementation BaseModel

- (instancetype)initWithDic:(NSDictionary *)dic
{
    if (self = [super init]) {
        [self setValuesForKeysWithDictionary:dic];
    }    
    return self;
}

#pragma mark 数据持久化
- (void)encodeWithCoder:(NSCoder *)aCoder
{
    //获取当前类的所有属性名称
    unsigned int outCount, i;
    objc_property_t *properties =class_copyPropertyList([self class], &outCount);
    
    //遍历所有的属性名称
    for (i = 0; i < outCount; i++)
    {
        //取出单个属性名称
        objc_property_t property = properties[i];
        const char* char_f = property_getName(property);
        //转换成OC串
        NSString *propertyName = [NSString stringWithUTF8String:char_f];
        //KVC取值
        id propertyValue = [self valueForKey:(NSString *)propertyName];
        //如果取出来有值 则归档
        if (propertyValue)
        {
            [aCoder encodeObject:propertyValue forKey:propertyName];
        }
    }
}



- (id)initWithCoder:(NSCoder *)aCoder
{
    self = [super init];
    if (self)
    {
        //取出所有的属性名称
        unsigned int outCount, i;
        objc_property_t *properties =class_copyPropertyList([self class], &outCount);
        
        //遍历属性
        for (i = 0; i<outCount; i++)
        {
            //取出单个属性
            objc_property_t property = properties[i];
            const char* char_f = property_getName(property);
            NSString *propertyName = [NSString stringWithUTF8String:char_f];
            
            //KVC赋值
            [self setValue:[aCoder decodeObjectForKey:propertyName] forKey:propertyName];

        }
    }
    return self;
}

//存档
+ (void)archiverWithRootObject:(id)rootObject{
    
    NSString *fileName = NSStringFromClass([self class]);
    
    [NSKeyedArchiver archiveRootObject:rootObject toFile:[[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:fileName]];
}

//解档
+ (id)unarchiver{
    NSString *fileName = NSStringFromClass([self class]);
    return [NSKeyedUnarchiver unarchiveObjectWithFile:[[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:fileName]];
}
@end

Swift版本

---

//
//  BaseModel.swift
//  WeiboSwift
//
//  Created by 曾凡怡 on 2017/1/5.
//  Copyright © 2017年 曾凡怡. All rights reserved.
//

import UIKit
class BaseModel: NSObject,NSCoding {
    
    
    init(dict : [String : Any]) {
        super.init()
        setValuesForKeys(dict)
    }
    
    required init?(coder aDecoder: NSCoder) {
        //先初始化
        super.init()
        //获取当前类的所有属性名
        let nameList = getPropertyNameList()
        //进行解档
        for key in nameList{
            //从aDecoder中取值
            let value = aDecoder.decodeObject(forKey: key)
            //赋值给自己
            setValue(value, forKey: key)
        }
    }
    
    func encode(with aCoder: NSCoder) {
        //获取当前类的所有属性名
        let nameList = getPropertyNameList()
        //进行归档
        for key in nameList{
            //KVC取值
            if let value = value(forKey: key){
                ////归档.此处注意归档的方法中要使用带 forKey参数的
                aCoder.encode(value, forKey: key)
            }
        }
    }
    
    func getPropertyNameList () -> [String]{
        //保存属性的个数
        var outCount : UInt32 = 0
        //保存属性名称的数组
        var list : [String] = []
        
        //获取属性集合
        let property = class_copyPropertyList(type(of:self), &outCount)
        //解包
        guard let propertyList = property else {
            return list
        }
        
        for i in 0 ..< Int(outCount){
            //取出单个属性
            let property = propertyList[i]
            
            //获取属性的名字
            guard let char_f = property_getName(property) else{
                continue
            }
            //转换为String
            if let key = NSString(cString: char_f, encoding: String.Encoding.utf8.rawValue) as? String {
                //添加到数组
                list.append(key)
            }
        }
        return list
    }
    
    func archiverWithRootObject(_ rootObjcet : Any){
        let filePath = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory, FileManager.SearchPathDomainMask.userDomainMask, true).last!
        
        let fileName = NSStringFromClass(self.classForCoder) as String
        
        let savePath = filePath + "/" + fileName + ".plist"
        
        //归档
        NSKeyedArchiver.archiveRootObject(rootObjcet, toFile:savePath)
    }
    
    func unarchiver()->Any?{
        let filePath = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory, FileManager.SearchPathDomainMask.userDomainMask, true).last!
        
        let fileName = NSStringFromClass(self.classForCoder) as String
        
        let savePath = filePath + "/" + fileName + ".plist"
        
        //解档出来的元素
        return NSKeyedUnarchiver.unarchiveObject(withFile: savePath)
    }
}

巨坑

Swift的巨坑!!!...哭了一下午,一直在解档崩溃.最后发现问题在归档.

//下面两种归档的方法要注意了.不要使用第一种归档.
    ~~aCoder.encode(object: Any?)~~  警告,不要使用
//而第二种方法因为第一个参数没有外部参数,很难打出来.
    aCoder.encode(objv: Any?, forKey: String)
    //输入aCoder.encodeforkey 来查找这个方法

因为本来用OC写的,尝试翻译成Swift的时候出现这么一个坑.望大家引起注意.