如何在 iOS 中进行 URL 解码 - Objective C
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How to URL Decode in iOS - Objective C
提问by VinnyD
The stringByReplacingPercentEscapesUsingEncoding method is not working properly as it's not decoding special symbols that dont start with a % character, i.e., the + character. Does anyone know of a better method to do this in iOS?
stringByReplacingPercentEscapesUsingEncoding 方法无法正常工作，因为它没有解码不以 % 字符（即 + 字符）开头的特殊符号。有谁知道在 iOS 中执行此操作的更好方法？
Here's what I'm currently using:
这是我目前正在使用的：
NSString *path = [@"path+with+spaces"
stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
And here's an example of the output:
这是输出的示例：
path+with+spaces
路径+带+空格
回答by rob mayoff
NSString *path = [[@"path+with+spaces"
stringByReplacingOccurrencesOfString:@"+" withString:@" "]
stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
Note that the plus-for-space substitution is only used in application/x-www-form-urlencodeddata - the query string part of a URL, or the body of a POSTrequest.
请注意，加号替换空格仅用于application/x-www-form-urlencoded数据 - URL 的查询字符串部分或POST请求正文。
回答by delux247
// Decode a percent escape encoded string.
- (NSString*) decodeFromPercentEscapeString:(NSString *) string {
return (__bridge NSString *) CFURLCreateStringByReplacingPercentEscapesUsingEncoding(NULL,
(__bridge CFStringRef) string,
CFSTR(""),
kCFStringEncodingUTF8);
}
http://cybersam.com/ios-dev/proper-url-percent-encoding-in-ios
http://cybersam.com/ios-dev/proper-url-percent-encoding-in-ios
This seems to be the preferred way because... "Apparently" this is a "bug" apple is aware of, but they haven't done anything about it yet... ( http://simonwoodside.com/weblog/2009/4/22/how_to_really_url_encode/)
这似乎是首选方式，因为......“显然”这是一个苹果意识到的“错误”，但他们还没有做任何事情......（http://simonwoodside.com/weblog/2009 /4/22/how_to_really_url_encode/)
回答by Evan Mulawski
If you are trying to replace the plus sign with percent escapes, perform a string replacement from "+" to " " (single space). Then use stringByAddingPercentEscapesUsingEncoding:to add the percent escapes.
如果您尝试用百分比转义替换加号，请执行从“+”到“”（单个空格）的字符串替换。然后用于stringByAddingPercentEscapesUsingEncoding:添加百分比转义。
The plus sign is one of many reserved URL characters that is never encoded.
加号是许多从未编码的保留 URL 字符之一。
(stringByReplacingPercentEscapesUsingEncoding:decodes the percent escapes)
（stringByReplacingPercentEscapesUsingEncoding:解码百分比转义）
回答by Mojtabye
swift 2 :
快速2：
extension String {
func uriDecodedString() -> String? {
return self.stringByReplacingOccurrencesOfString("+", withString: " ").stringByRemovingPercentEncoding
}
}
回答by Fernando Perez
Also you can use the PercentEncoder library from Cocoapods.
你也可以使用 Cocoapods 的 PercentEncoder 库。
Swift 4
斯威夫特 4
Include the library to your Podfile:
pod PercentEncoder
Import the library PercentEncoder
import PercentEncoder
class ViewController{
...
}
Replace the "+" character by "%20" and use the method "ped_decodeURI"
"path+with+spaces".replacingOccurrences(of: "+", with: "%20").ped_decodeURI()
将库包含到您的 Podfile 中：
pod 百分比编码器
导入库 PercentEncoder
导入百分比编码器
类视图控制器{
...
}
用“%20”替换“+”字符并使用方法“ped_decodeURI”
"path+with+spaces".replacingOccurrences(of: "+", with: "%20").ped_decodeURI()
It will return "path with spaces"
它将返回“带空格的路径”
Here the link for reference: https://cocoapods.org/pods/PercentEncoder
这里的链接供参考：https: //cocoapods.org/pods/PercentEncoder
