xcode 8 swift 3 图片文件无法上传到服务器
xcode 8 swift 3 image file won't upload to server
使用 Xcode 8、Swift 3 和 PHP。
Xcode 和 PHP 是 运行 没有错误。
为什么模拟器中的 displayPic.image 没有保存到服务器的 pic1-1.png 中?出现的只是一个空白文件。
Xcode:
@IBAction func sendToServer(_ sender: UIButton) {
let url = NSURL(string: "http://www.example.com/picSaver.php")
var request = URLRequest(url: url! as URL)
request.httpMethod = "POST"
var boundary = generateBoundaryString()
request.setValue("multipart/form-data; boundary=\(boundary)",
forHTTPHeaderField: "Content-Type")
if (displayPic.image == nil)
{ return }
let image_data = UIImagePNGRepresentation(displayPic.image!)
var body = NSMutableData()
let fname = "porch-167.png"
let mimetype = "image/png"
body.append("--\(boundary)\r\n".data(using: String.Encoding.utf8)!)
body.append("Content-Disposition:form-data;
name=\"photo\"\r\n\r\n".data(using: String.Encoding.utf8)!)
body.append("Incoming\r\n".data(using: String.Encoding.utf8)!)
body.append("--\(boundary)\r\n".data(using: String.Encoding.utf8)!)
body.append("Content-Disposition:form-data; name=\"file\";
filename=\"\(fname)\"\r\n".data(using: String.Encoding.utf8)!)
body.append("Content-Type: \(mimetype)\r\n\r\n".data(using:
String.Encoding.utf8)!)
body.append(image_data!)
body.append("\r\n".data(using: String.Encoding.utf8)!)
body.append("--\(boundary)--\r\n".data(using:
String.Encoding.utf8)!)
request.httpBody = body as Data
let session = URLSession.shared
let task = session.dataTask(with: request as URLRequest) {
(
data, response, error) in
guard let _:Data = data, let _:URLResponse = response , error
== nil else {
print("error")
return
}
let dataString = String(data: data!, encoding:
String.Encoding(rawValue: String.Encoding.utf8.rawValue))
print(dataString)
}
task.resume()
}
}
func generateBoundaryString() -> String {
return "Boundary-\(NSUUID().uuidString)"
}
picSaver.php
<?php
$p=$_REQUEST["filename"]
move_uploaded_file($p["tmp_name"], pic1-1.png);
$data=Array("Reply"=>"Image saved at server");
echo json_encode($data);
?>
"filename" $p $_REQUEST 的参数请求是否正确?
现在可以完美运行了。将 $_REQUEST 更改为 $_FILES,并将 "filename" 更改为 "file"
<?php
$p=$_FILES["file"]
move_uploaded_file($p["tmp_name"], "pic1-1.png");
$data=Array("Reply"=>"Image saved at server");
echo json_encode($data);
?>
使用 Xcode 8、Swift 3 和 PHP。
Xcode 和 PHP 是 运行 没有错误。
为什么模拟器中的 displayPic.image 没有保存到服务器的 pic1-1.png 中?出现的只是一个空白文件。
Xcode:
@IBAction func sendToServer(_ sender: UIButton) {
let url = NSURL(string: "http://www.example.com/picSaver.php")
var request = URLRequest(url: url! as URL)
request.httpMethod = "POST"
var boundary = generateBoundaryString()
request.setValue("multipart/form-data; boundary=\(boundary)",
forHTTPHeaderField: "Content-Type")
if (displayPic.image == nil)
{ return }
let image_data = UIImagePNGRepresentation(displayPic.image!)
var body = NSMutableData()
let fname = "porch-167.png"
let mimetype = "image/png"
body.append("--\(boundary)\r\n".data(using: String.Encoding.utf8)!)
body.append("Content-Disposition:form-data;
name=\"photo\"\r\n\r\n".data(using: String.Encoding.utf8)!)
body.append("Incoming\r\n".data(using: String.Encoding.utf8)!)
body.append("--\(boundary)\r\n".data(using: String.Encoding.utf8)!)
body.append("Content-Disposition:form-data; name=\"file\";
filename=\"\(fname)\"\r\n".data(using: String.Encoding.utf8)!)
body.append("Content-Type: \(mimetype)\r\n\r\n".data(using:
String.Encoding.utf8)!)
body.append(image_data!)
body.append("\r\n".data(using: String.Encoding.utf8)!)
body.append("--\(boundary)--\r\n".data(using:
String.Encoding.utf8)!)
request.httpBody = body as Data
let session = URLSession.shared
let task = session.dataTask(with: request as URLRequest) {
(
data, response, error) in
guard let _:Data = data, let _:URLResponse = response , error
== nil else {
print("error")
return
}
let dataString = String(data: data!, encoding:
String.Encoding(rawValue: String.Encoding.utf8.rawValue))
print(dataString)
}
task.resume()
}
}
func generateBoundaryString() -> String {
return "Boundary-\(NSUUID().uuidString)"
}
picSaver.php
<?php
$p=$_REQUEST["filename"]
move_uploaded_file($p["tmp_name"], pic1-1.png);
$data=Array("Reply"=>"Image saved at server");
echo json_encode($data);
?>
"filename" $p $_REQUEST 的参数请求是否正确?
现在可以完美运行了。将 $_REQUEST 更改为 $_FILES,并将 "filename" 更改为 "file"
<?php
$p=$_FILES["file"]
move_uploaded_file($p["tmp_name"], "pic1-1.png");
$data=Array("Reply"=>"Image saved at server");
echo json_encode($data);
?>