iOS url 編碼 解碼

iOS url 編碼 解碼

- (NSString *)encodeToPercentEscapeString: (NSString *) input  {      // Encode all the reserved characters, per RFC 3986      // ()      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];  }