JSONString 与 JSONData 与字典或者数组互相转化

JSON

JSON相关的,数据彼此间的转化进行了简单地封装,源码如下,支持arc与非arc

YXJSON.h + YXJSON.m

//
//  YXJSON.h
//
//  JSONString 与 JSONData 与 字典或者数组互相转化
//
//  Copyright (c) 2014年 YouXian. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface YXJSON : NSObject

/**
将字典或者数组转换为JSON格式字符串

@return JSON格式字符串
*/
+ (NSString *)JSONStringWithDictionaryOrArray:(id)dictionaryOrArray;

/**
将字典或者数组转换为JSON的Data

@return JSON的Data
*/
+ (NSData *)JSONSDataWithDictionaryOrArray:(id)dictionaryOrArray;

/**
将JSON格式字符串转换为字典或者数组

@return 字典或者数组
*/
+ (id)dictionaryOrArrayWithJSONSString:(NSString *)jsonString;

/**
将JSON的Data转换为字典或者数组

@return 字典或者数组
*/
+ (id)dictionaryOrArrayWithJSONSData:(NSData *)jsonData;

@end

//
//  YXJSON.m
//
//  JSONString 与 JSONData 与 字典或者数组互相转化
//
//  Copyright (c) 2014年 YouXian. All rights reserved.
//

#if __has_feature(objc_arc)
#define YX_release(obj)
#define YX_autorelease(obj)
#else
#define YX_release(obj)      [obj release]
#define YX_autorelease(obj)  [obj autorelease]
#endif

#import "YXJSON.h"

@implementation YXJSON

+ (NSString *)JSONStringWithDictionaryOrArray:(id)dictionaryOrArray
{
if (dictionaryOrArray == nil)
{
return nil;
}

//options: Pass 0 if you don't care about the readability of the generated string
NSData *data = [NSJSONSerialization dataWithJSONObject:dictionaryOrArray
options:NSJSONWritingPrettyPrinted
error:nil];

if (data == nil)
{
return nil;
}

NSString *string = [[NSString alloc] initWithData:data
encoding:NSUTF8StringEncoding];
YX_autorelease(string);

return string;
}

+ (NSData *)JSONSDataWithDictionaryOrArray:(id)dictionaryOrArray
{
if (dictionaryOrArray == nil)
{
return nil;
}

//options: Pass 0 if you don't care about the readability of the generated string
NSData *data = [NSJSONSerialization dataWithJSONObject:dictionaryOrArray
options:NSJSONWritingPrettyPrinted
error:nil];
return data;
}

+ (id)dictionaryOrArrayWithJSONSString:(NSString *)jsonString
{
if (jsonString == nil)
{
return nil;
}

NSData *jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];

return [NSJSONSerialization JSONObjectWithData:jsonData
options:NSJSONReadingMutableLeaves|| NSJSONReadingMutableContainers
error:nil];
}

+ (id)dictionaryOrArrayWithJSONSData:(NSData *)jsonData
{
if (jsonData == nil)
{
return nil;
}

return [NSJSONSerialization JSONObjectWithData:jsonData
options:NSJSONReadingMutableLeaves|| NSJSONReadingMutableContainers
error:nil];
}

@end

没有将其单独的封装到 NSString NSData NSArray NSDictionary 相关类目中,实际上用类目的方式使用更加方便,有需求可以自己弄,但文件多较为繁琐,本人不习惯.