把格式化的JSON格式的字符串转换成数组或字典

#import <Foundation/Foundation.h>

@interface DictJsonString : NSObject

+ (NSDictionary *)dictionaryWithJsonString:(NSString *)jsonString;
+ (NSArray *)arrayWithJsonString:(NSString *)jsonString;
@end

#import "DictJsonString.h"

@implementation DictJsonString

/*!
 * @brief 把格式化的JSON格式的字符串转换成字典
 * @param jsonString JSON格式的字符串
 * @return 返回字典
 */
+ (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) {
        DmLog(@"json解析失败：%@",err);
        return nil;
    }
    return dic;
}

/*!
 * @brief 把格式化的JSON格式的字符串转换成数组
 * @param jsonString JSON格式的字符串
 * @return 返回数组
 */
+ (NSArray *)arrayWithJsonString:(NSString *)jsonString {
    if (jsonString == nil) {
        return nil;
    }
    
    NSData *jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
    NSError *err;
    NSArray *array = [NSJSONSerialization JSONObjectWithData:jsonData
                                                        options:NSJSONReadingMutableContainers
                                                          error:&err];
    if(err) {
        DmLog(@"json解析失败：%@",err);
        return nil;
    }
    return array;
}

@end