iOS中的url編碼問題

來源:互聯網
上載者:User

iOS中的url編碼問題

羅朝輝 (http://www.cnblogs.com/kesalin/) 本文遵循“ 署名-非商業用途-保持一致”創作公用協議  

NSString 的 stringByAddingPercentEscapesUsingEncoding 可以對 url 參數進行編碼,但是有點小問題,不會對所有需要編碼的字元都編碼。我們可以通過  CFStringRef 的 

CFURLCreateStringByAddingPercentEscapes 函數來封裝這個功能。代碼如下:

- (NSString *)encodeToPercentEscapeString: (NSString *) input
{
// Encode all the reserved characters, per RFC 3986
// (<http://www.ietf.org/rfc/rfc3986.txt>)
NSString *outputStr = (NSString *)
CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,
(CFStringRef)input,
NULL,
(CFStringRef)@"!*'();:@&=+$,/?%#[]",
kCFStringEncodingUTF8);
return outputStr;
}

- (NSString *)decodeFromPercentEscapeString: (NSString *) input
{
NSMutableString *outputStr = [NSMutableString stringWithString:input];
[outputStr replaceOccurrencesOfString:@"+"
withString:@" "
options:NSLiteralSearch
range:NSMakeRange(0, [outputStr length])];

return [outputStr stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
}

 

測試代碼:

    NSString * testUrl      = @"http://search.google.com?keywords=($# it's {a*123})00!*'();:@&=+$,/?%#[]";
NSLog(@"original: %@", testUrl);

NSString * encodeStr = [self encodeToPercentEscapeString:testUrl];
NSLog(@"encoded: %@", encodeStr);

NSString * encodeStr2 = [testUrl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSLog(@"encoded2:%@", encodeStr2);

NSString * decodeStr = [self decodeFromPercentEscapeString:encodeStr];
NSLog(@"decoded: %@", decodeStr);

 

結果如下:

>> original: http://search.google.com?keywords=($# it's {a*123})00!*'();:@&=+$,/?%#[]
>> encoded: http%3A%2F%2Fsearch.google.com%3Fkeywords%3D%28%24%23%20it%27s%20%7Ba%2A123%7D%2900%21%2A%27%28%29%3B%3A%40%26%3D%2B%24%2C%2F%3F%25%23%5B%5D
>> encoded2: http://search.google.com?keywords=($%23%20it's%20%7Ba*123%7D)00!*'();:@&=+$,/?%25%23%5B%5D
>> decoded: http://search.google.com?keywords=($# it's {a*123})00!*'();:@&=+$,/?%#[] 分享

相關文章

聯繫我們

該頁面正文內容均來源於網絡整理,並不代表阿里雲官方的觀點,該頁面所提到的產品和服務也與阿里云無關,如果該頁面內容對您造成了困擾,歡迎寫郵件給我們,收到郵件我們將在5個工作日內處理。

如果您發現本社區中有涉嫌抄襲的內容,歡迎發送郵件至: info-contact@alibabacloud.com 進行舉報並提供相關證據,工作人員會在 5 個工作天內聯絡您,一經查實,本站將立刻刪除涉嫌侵權內容。

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.