iOS 解析带/的JSON字符串

先去掉转移符/

NSMutableString *responseString = @"{\"cate\":\"2\",\"share_url\":\"http://api.fafaasfaijia.com/fd/notifdce_detail.html?notisdssdsce_id=18&\",\"id\":\"18\"}";
         NSString *character = nil;
     for (int i = 0; i < responseString.length; i ++) {
             character = [responseString substringWithRange:NSMakeRange(i, 1)];
             if ([character isEqualToString:@"\\"])
                [responseString deleteCharactersInRange:NSMakeRange(i, 1)];
         }
    NSLog(@"%@",responseString);

将JSON字符串转化为字典

+ (NSDictionary *)dictionaryWithJsonString:(NSString *)jsonString {

if (jsonString == nil) {

return nil;

}
 NSData *jsonData = [responseString dataUsingEncoding:NSUTF8StringEncoding];
 NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:nil]; 
 NSLog(@"%@",dic);

将字典串转化为JSON字符串

+ (NSString*)dictionaryToJson:(NSDictionary *)dic

{

NSError *parseError = nil;

NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dic options:NSJSONWritingPrettyPrinted error:&parseError];

return [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];

}

NSJSONWritingPrettyPrinted  是有换位符的。

如果NSJSONWritingPrettyPrinted 是nil 的话 返回的数据是没有 换位符的