URL参数解析与提取-优快云博客

本文链接：https://blog.youkuaiyun.com/maolianshuai/article/details/89014469

本文主要探讨了如何从URL中提取关键参数，包括使用正则表达式、编程语言内置函数等方法，适用于Web开发和数据分析场景。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

- (NSMutableDictionary *)getURLParameters:(NSString *)url
{
    if ([url containsString:@"?"])
    {
        NSMutableDictionary *parametersDic = [NSMutableDictionary dictionary];
        NSRange range = [url rangeOfString:@"?"];
        /// 取出？后面的参数字符串
        NSString *parametersString = [url substringFromIndex:range.location + 1];
        
        if ([parametersString containsString:@"&"])
        {
            /// 多参
            NSArray<NSString *> *parametersArr = [parametersString componentsSeparatedByString:@"&"];
            
            [parametersArr enumerateObjectsUsingBlock:^(NSString * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
                NSArray *pairComponents = [obj componentsSeparatedByString:@"="];
                NSString *key = [[pairComponents firstObject] stringByRemovingPercentEncoding];
                NSString *value = [[pairComponents lastObject] stringByRemovingPercentEncoding];
                
                if (key && value)
                {
                    [parametersDic setObject:value forKey:key];
                }
            }];
        }
        else
        {
            /// 单参
            NSArray *pairComponent = [parametersString componentsSeparatedByString:@"="];
            NSString *key = [[pairComponent firstObject] stringByRemovingPercentEncoding];
            NSString *value = [[pairComponent lastObject] stringByRemovingPercentEncoding];
            if (key && value)
            {
                [parametersDic setObject:value forKey:key];
            }
            else
            {
                return nil;
            }
        }
        
        return parametersDic;
    }
    else
    {
        return nil;
    }
}

url参数提取