KouDaiProject/YouHuiProject/YouHui/ShopCar/JsonTool/JsonTool.m

//
//  JsonTool.m
//  YouHuiProject
//
//  Created by 小花 on 2018/11/5.
//  Copyright © 2018年 kuxuan. All rights reserved.
//

#import "JsonTool.h"

@implementation JsonTool

/**
 字典转json字符串
 */
+ (NSString *)convertToJsonData:(NSDictionary *)dict

{
    
    NSError *error;
    
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dict options:NSJSONWritingPrettyPrinted error:&error];
    
    NSString *jsonString;
    
    if (!jsonData) {
        
        NSLog(@"%@",error);
        
    }else{
        
        jsonString = [[NSString alloc]initWithData:jsonData encoding:NSUTF8StringEncoding];
        
    }
    
    NSMutableString *mutStr = [NSMutableString stringWithString:jsonString];
    
    NSRange range = {0,jsonString.length};
    
    //去掉字符串中的空格
    
    [mutStr replaceOccurrencesOfString:@" " withString:@"" options:NSLiteralSearch range:range];
    
    NSRange range2 = {0,mutStr.length};
    
    //去掉字符串中的换行符
    
    [mutStr replaceOccurrencesOfString:@"\n" withString:@"" options:NSLiteralSearch range:range2];
    
    return mutStr;
    
}


/**
 JSON字符串转化为字典
 */
+ (NSDictionary *)dictionaryWithJsonString:(NSString *)jsonString
{
    if (jsonString == nil) {
        return nil;
    }
    
    NSData *jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
    NSError *err;
    NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:jsonData
                                                        options:NSJSONReadingMutableContainers
                                                          error:&err];
    if(err)
    {
        NSLog(@"json解析失败：%@",err);
        return nil;
    }
    return dic;
}

+ (NSArray *)stringToJSON:(NSString *)jsonStr {
    if (jsonStr) {
        id tmp = [NSJSONSerialization JSONObjectWithData:[jsonStr dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingAllowFragments | NSJSONReadingMutableLeaves | NSJSONReadingMutableContainers error:nil];
        if (tmp) {
            if([tmp isKindOfClass:[NSArray class]]) {
                return tmp;
            }else if([tmp isKindOfClass:[NSString class]]|| [tmp isKindOfClass:[NSDictionary class]]){
                return [NSArray arrayWithObject:tmp];
            } else {
                return nil;
            }
        }else {
            return nil;
        }
    } else {
        return nil;
    }
}



/**
 数组转json字符串
 */
+ (NSString *)arrayToJSONString:(NSArray *)arr {
    if (!arr) {
        return @"";
    }
    NSData *data = [NSJSONSerialization dataWithJSONObject:arr
                                                   options:NSJSONReadingMutableLeaves | NSJSONReadingAllowFragments
                                                     error:nil];
    
    if (data == nil) {
        return nil;
    }
    
    NSString *string = [[NSString alloc] initWithData:data
                                             encoding:NSUTF8StringEncoding];
    return string;
}


@end