在 swift 2.3 中将 UIImage 转换为 Base64

Question

我正在尝试使用 swift 2.3 将 UIImage 转换为 Base64 编码字符串，但编码字符串无法在服务器上 post。

服务器抛出类似 "Exception thrown when handling an exception (ErrorException: iconv(): Detected an illegal character in input string)" 的错误。

我可以从编码字符串中删除特殊字符吗？或者我的源代码有问题code.as我在下面提到了我的源代码。

 //*************** Image Picker function ********* //
 func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject])
 {
    let chosenImage = info[UIImagePickerControllerOriginalImage] as! UIImage

    self.imageData = UIImageJPEGRepresentation(chosenImage, 0)         
    self.imageString = self.imageData!.base64EncodedStringWithOptions(NSDataBase64EncodingOptions())
   self.webServiceForShareData()
   dismissViewControllerAnimated(true, completion: nil)
 }//******** Image Picker End **** //



 func webServiceForShareData()
{
 let allowedCharacters = NSCharacterSet.URLQueryAllowedCharacterSet().mutableCopy() as! NSMutableCharacterSet
    allowedCharacters.removeCharactersInString("+/=")


     //****************** Alamofire Request *********** // 
    Alamofire.request(.POST,"URL",parameters:["pic":self.imageString != nil ? (self.imageString!.stringByAddingPercentEncodingWithAllowedCharacters(allowedCharacters))! :"", "txt" : self.txtTest.text!, "on_twitter" : self.twitterSuccess, "on_facebook" : self.facebookSuccess],headers : ["Authorization":(NSUserDefaults.standardUserDefaults().objectForKey("oneSocialToken") as! String)])
        .responseJSON
        { 
             response in
             print(response.request)  // original URL request
             print(response.response) // URL response
             print(response.data)     // server data
             print(response.result)   // result of response serializatio
            if let JSON: NSDictionary = response.result.value as? NSDictionary
            {
                print(JSON)
            }
       }
 //*************** Alamofire Request End *************** //

 }// *** Function End

Answer 1

来自docs：

options
A mask that specifies options for Base-64 encoding the data. Possible values are given in NSDataBase64EncodingOptions.

因此您需要将 NSDataBase64EncodingOptions() 替换为 NSDataBase64EncodingOptions().[one_of_the_following_values]:

NSDataBase64Encoding64CharacterLineLength
Set the maximum line length to 64 characters, after which a line ending is inserted.

NSDataBase64Encoding76CharacterLineLength
Set the maximum line length to 76 characters, after which a line ending is inserted.

NSDataBase64EncodingEndLineWithCarriageReturn
When a maximum line length is set, specify that the line ending to insert should include a carriage return.

NSDataBase64EncodingEndLineWithLineFeed
When a maximum line length is set, specify that the line ending to insert should include a line feed.

来源：Apple docs

在 swift 2.3 中将 UIImage 转换为 Base64

Convert UIImage to Base64 in swift 2.3

base64

uiimage

ios

laravel

swift