如何使用文本参数和图像文件发送帖子数据? [英] How send post data with text parameter and image file?
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问题描述
我制作了一个应用程序,允许用户将图像和多个上传到我们的服务器.如果我只是发布文本数据,我的代码会成功将数据发布到服务器,但是当我尝试发布带有图像数据的文本数据时,我的服务器会抛出异常.
I make an application that allows user to upload image and several to our server. If I just post text data my code successfully post data to the server but when I try to post text data with image data, my server throw an exception.
这是我的代码:
class func Enroll(image: UIImage, date: String, studentid: String, guardianid:String, type:String){
//date,student_id,type,guardian_id,image, type
var textBody : String?
let imageData = UIImagePNGRepresentation(image)
let boundary = NSString(format: "---------------------------14737809831466499882746641449")
let contentType = NSString(format: "multipart/form-data; boundary=%@",boundary)
let URL: NSURL = NSURL(string: "http://api-cc.appsence.net/v1/signs")!
let request:NSMutableURLRequest = NSMutableURLRequest(URL:URL)
request.HTTPMethod = "POST"
let body : NSMutableData = NSMutableData()
body.appendData(NSString(format: "\r\n--%@\r\n", boundary).dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData(NSString(format:"Content-Disposition: form-data; name=\"profile_img\"; filename=\"img.jpg\"\\r\n").dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData(NSString(format: "Content-Type: application/octet-stream\r\n\r\n").dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData(imageData!)
body.appendData(NSString(format: "\r\n--%@\r\n", boundary).dataUsingEncoding(NSUTF8StringEncoding)!)
//fill text value here
textBody = "date=\(date)&student_id=\(studentid)&guardian_id=\(guardianid)&type=\(type)"
print("text body : \(textBody!)")
let bodyTextData = textBody!.dataUsingEncoding(NSUTF8StringEncoding);
body.appendData(bodyTextData!)
request.addValue(contentType as String, forHTTPHeaderField: "Content-Type")
// if data string use data using encoding
request.HTTPBody = body
NSURLSession.sharedSession().dataTaskWithRequest(request){ (data:NSData?, response:NSURLResponse?, error:NSError?) -> Void in
if error == nil{
print("sukses : \(NSString(data: data!, encoding: NSUTF8StringEncoding)!)")
}else{
print("ini error save \(NSString(data: data!, encoding: NSUTF8StringEncoding)!)")
}
}.resume()
}
我该如何解决这个问题?
How can I fix this issue?
推荐答案
Alamofire 3+
// import Alamofire
func uploadWithAlamofire() {
let image = UIImage(named: "myPhoto")!
// define parameters
let parameters = [
"hometown": "bodrum",
"living": "izmir"
]
// Begin upload
Alamofire.upload(.POST, "upload_url",
// define your headers here
headers: ["Authorization": "auth_token"],
multipartFormData: { multipartFormData in
// import image to request
if let imageData = UIImageJPEGRepresentation(image, 1) {
multipartFormData.appendBodyPart(data: imageData, name: "file", fileName: "myImage.png", mimeType: "image/png")
}
// import parameters
for (key, value) in parameters {
multipartFormData.appendBodyPart(data: value.dataUsingEncoding(NSUTF8StringEncoding)!, name: key)
}
}, encodingMemoryThreshold: Manager.MultipartFormDataEncodingMemoryThreshold,
encodingCompletion: { encodingResult in
switch encodingResult {
case .Success(let upload, _, _):
upload.responseJSON { result in
debugPrint(result)
}
case .Failure(let encodeError):
print(encodeError)
}
})
}
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