使用编码加（％2B）创建NSURL [英] Make an NSURL with an encoded plus (%2B)

问题描述

我需要在GET请求中传递带时区偏移的时间戳，例如

I need to pass a timestamp with a timezone offset in a GET request, e.g.,

2009-05-04T11：22： 00 + 01:00

2009-05-04T11:22:00+01:00

这看起来像两个参数2009-05-04T11：22：00和01:00 接收PHP脚本（我无法控制）。

This looks like a two arguments "2009-05-04T11:22:00" and "01:00" to the receiving PHP script (over which I've no control).

NSURL不编码加号，但如果我使用字符串制作NSURL

NSURL doesn't encode plus signs, but if I make an NSURL using the string

2009-05-04T11：22：00％2B01：00

2009-05-04T11:22:00%2B01:00

我最终得到的网址包含：

the url I end up with contains:

2009-05-04T11：22：00％252B01：00

2009-05-04T11:22:00%252B01:00

我有什么想法可以保留我的编码加号或者只是简单地阻止NSURL编码任何东西？

Any ideas how I can preserve my encoded plus sign or just plain prevent NSURL from encoding anything?

推荐答案

对我有用的是UTF8转换，然后用％2B替换+号：

What worked for me was doing the UTF8 conversion, then replacing the + sign with %2B:

NSString *urlString =
    [NSString stringWithFormat:@"%@/iphone/push/create?pn[token]=%@&pn[send_at]=%@",
     kHTTPURL, appDelegate.deviceAPNToken, [dateTimeToUse description]];

urlString =
    [[urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]
     stringByReplacingOccurrencesOfString:@"+" withString:@"%2B"];

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