iOS拼接json字符串的两种方式

两种json字符串拼接的方法如下：

+ (NSString *)UIUtilsFomateJsonWithDictionary:(NSDictionary *)dic {

    NSArray *keys = [dic allKeys];

    NSString *string = [NSString string];

    for (NSString *key in keys) {

        NSString *value = [dic objectForKey:key];

        value = [NSString stringWithFormat:@"\"%@\"",value];

        NSString *newkey = [NSString stringWithFormat:@"\"%@\"",key];

        if (!string.length) {

            string = [NSString stringWithFormat:@"%@:%@}",newkey,value];

        }else {

            string = [NSString stringWithFormat:@"%@:%@,%@",newkey,value,string];

        }

    }

    string = [NSString stringWithFormat:@"{%@",string];

    return string;

}

+ (NSString *)UIUtilsFomateJsonArrWithArray:(NSArray *)array {

    NSString *string = [NSString string];

    for (int j = 0; j<array.count; j++) {

        NSDictionary *dic = array[j];

        NSArray *keys = [dic allKeys];

        for (int i = 0; i<keys.count; i++) {

            NSString *key = keys[i];

            NSString *value = [dic objectForKey:key];

            value = [NSString stringWithFormat:@"\"%@\"",value];

            key = [NSString stringWithFormat:@"\"%@\"",key];

            if (!string.length) {

                string = [NSString stringWithFormat:@"%@:%@}",key,value];

            }else if(i == 0){

                string = [NSString stringWithFormat:@"%@:%@}%@",key,value,string];

            }else {

                string = [NSString stringWithFormat:@"%@:%@,%@",key,value,string];

            }

        }

        if (j != array.count-1) {

            string = [NSString stringWithFormat:@",{%@",string];

        }else {

            string = [NSString stringWithFormat:@"[{%@]",string];

        }

    }

    return string;

}

调用：

第一种直接传入@"key":@"value"}即可，

第二种array里面对象需要是字典：NSArray *array = @[@{@"key":@"value"}];

iOS拼接json字符串的两种方式

原文：http://www.cnblogs.com/leconglee/p/4848790.html