object c 归档和解档，其实就是java中的序列化和反序列化-白红宇

object c 归档和解档，其实就是java中的序列化和反序列化

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发布时间：2019-05-24

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////  main.m//  YuFaJinJie////  Created by 千雅爸爸 on 16/10/6.//  Copyright © 2016年 kodulf. All rights reserved.//#import 
   
    #import "Person.h"//归档和解档achiver unachiver，数据持久化的方式，//一种是plist文件一种是nsuserdefault,这两种都是操作的系统给的类型，例如字典和数组//现在有一种可以自定义的类型的存储，这个是不是有点像java的serialization？//在相应的类中，要进行归档必须要实现协议nscoding,正式的协议就是java里面的接口，和java里面要实现序列化就要实现serilization的接口一样，这里要实现nscoding//@interface Person : NSObject 
    
     void guidanjiedang(){    Person *person = [[Person alloc] init];    person.name = @"Tom";    person.age = 20;    person.sex = @"male";    //归档器的类叫做NSKeyedArchiver,里面有一个类方法    NSData *personData = [NSKeyedArchiver archivedDataWithRootObject:person];    NSLog(@"二进制：%@",personData);    //写入到文件中    [personData writeToFile:@"/Users/JiYi2013/Desktop/guidang" atomically:YES];        //从文件中读取，二进制，然后转化为类    personData = [NSData dataWithContentsOfFile:@"/Users/JiYi2013/Desktop/guidang"];    Person *unachiverperson2 = [NSKeyedUnarchiver unarchiveObjectWithData:personData];    NSLog(@"unachiver解档：%@",unachiverperson2);            //多个类型的归档和解档    Person *person2 = [[Person alloc] init];    person2.name =@"java";    person2.age = 20;    person2.sex = @"null";        NSMutableData *mutabledata = [NSMutableData data];    NSKeyedArchiver *personMutableAchiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:mutabledata];    [personMutableAchiver encodeObject:person forKey:@"person"];    [personMutableAchiver encodeObject:person2 forKey:@"person2"];    //一定要结束归档，不然会一只归档    [personMutableAchiver finishEncoding];    NSLog(@"%@",mutabledata);        //多个类型的解档    NSKeyedUnarchiver *personMutableUnachiver = [[NSKeyedUnarchiver alloc]initForReadingWithData:mutabledata];    Person *decodeperson = [personMutableUnachiver decodeObjectForKey:@"person"];    Person *decodeperson2 = [personMutableUnachiver decodeObjectForKey:@"person2"];    NSLog(@"解档：反序列化：person:%@",decodeperson);    NSLog(@"解档：反序列化：person2:%@",decodeperson2);}int main(int argc, const char * argv[]) {    @autoreleasepool {                guidanjiedang();    }    return 0;}

person：

////  Person.h//  YuFaJinJie////  Created by 千雅爸爸 on 16/10/6.//  Copyright © 2016年 kodulf. All rights reserved.//#import 
   
    //要进行归档必须要实现协议nscoding,正式的协议就是java里面的接口，和java里面要实现序列化就要实现serilization的接口一样，这里要实现nscoding@interface Person : NSObject 
    
     //NSData 是oc里面存储二进制的，@property(nonatomic,copy) NSString *name;@property(nonatomic,assign) NSInteger age;@property(nonatomic,copy) NSString *sex;@end

////  Person.m//  YuFaJinJie////  Created by 千雅爸爸 on 16/10/6.//  Copyright © 2016年 kodulf. All rights reserved.//#import "Person.h"@implementation Person//归档achiver的时候，也就是序列化的时候，会自动的调用这个方法- (void)encodeWithCoder:(NSCoder *)coder{    [coder encodeObject:_name forKey:@"name"];    [coder encodeInteger:_age forKey:@"age"];    [coder encodeObject:_sex forKey:@"sex"];}//接档unachiver- (instancetype)initWithCoder:(NSCoder *)coder{    self = [super init];    if(self){        _name = [coder decodeObjectForKey:@"name"];        _age = [coder decodeIntegerForKey:@"age"];        _sex = [coder decodeObjectForKey:@"sex"];    }    return self;}- (NSString *)description{    return [NSString stringWithFormat:@"name=%@,age=%ld,sex=%@", _name,_age,_sex];}@end