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[英]swift url Session post request with parameters and image (Multipart Form-Data Requests )
[英]Uploading an image and parameters with multipart/form-data in Swift
[警告]
正如我所看到的,这个问题受到的关注比它应有的要多,我想告诉您不要使用以下任何代码。
在我问这个问题时,Swift不到一年,发展很快,大多数库都不对Swift友好且不稳定。 我强烈建议您尝试将Alamofire或其他库用于此类任务。 但是不要自己做。
[/警告]
我想将图像上传到Drupal端点。
我遇到的问题是我收到了文本/ html内容类型的HTTP 200 OK响应。 在HTML响应中,有明确的消息表明已正确创建节点。 但是在服务器端,映像未与节点关联。
另外我不希望text / html,而是我在Accept标头中指定的application / json。
它已经可以在使用Android Rest模板的Android应用中使用。 这是供参考的代码:
String url = getUrl("node/{info_id}/attach_file");
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.MULTIPART_FORM_DATA);
if (user.isLoggedIn()) {
headers.add(user.getSessionName(), user.getSessionId());
headers.add("X-CSRF-Token", user.getToken());
headers.add("Cookie", user.getSessionName() + "=" + user.getSessionId());
}
MultiValueMap<String, Object> parts = new LinkedMultiValueMap<>();
parts.add("files[field_mobileinfo_image]",
new FileSystemResource(info.getImageUri()));
parts.add("field_name", "field_mobileinfo_image");
HttpEntity<MultiValueMap<String, Object>> request = new HttpEntity<>(parts, headers);
return getRestTemplate().exchange(url, HttpMethod.POST, request, Void.class, info.getId()).getBody();
我知道我不检查Android( Void.class
)中的响应,但是一切正常,并且图像已附加到服务器端的节点上。
现在在Swift中的iOS上,我尝试了多种方法。
使用AFNetworking:
func upload(mobileInfo: MobileInfo) {
let user = userService.load()
let url = Config.buildUrl("")
let manager = AFHTTPRequestOperationManager(baseURL: NSURL(string:url)!)
let serializer = AFHTTPRequestSerializer()
serializer.setValue(user.sessionId, forHTTPHeaderField: user.sessionName)
serializer.setValue(user.token, forHTTPHeaderField: "X-CSRF-Token")
serializer.setValue("\(user.sessionName)=\(user.sessionId)", forHTTPHeaderField: "Cookie")
manager.requestSerializer = serializer
manager.responseSerializer.acceptableContentTypes.removeAll(keepCapacity: false)
manager.responseSerializer.acceptableContentTypes.insert("application/json")
let imageData = UIImageJPEGRepresentation(mobileInfo.image, 0.3)
manager.POST("/node/\(mobileInfo.id)/attach_file", parameters: nil, constructingBodyWithBlock: { (formData) -> Void in
formData.appendPartWithFileData(
imageData,
name: "files[field_mobileinfo_image]",
fileName: "field_mobileinfo_image",
mimeType: "image/jpeg")
formData.appendPartWithFormData("field_mobileinfo_image".dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: true), name: "field_name")
},
success: { (operation, data) -> Void in
println(data)
}) { (operation, error) -> Void in
println(error)
}
}
手动处理从其他stackoverflow问题中获取的信息:
func upload2(mobileInfo: MobileInfo) {
let user = userService.load()
let imageData = UIImageJPEGRepresentation(mobileInfo.image, 0.3)
let url = NSURL(string:Config.buildUrl("/node/\(mobileInfo.id)/attach_file"))!
println(url)
var request = NSMutableURLRequest(URL: url)
var session = NSURLSession.sharedSession()
request.HTTPMethod = "POST"
var boundary = "---------------------------14737809831466499882746641449"
var contentType = "multipart/form-data; boundary=\(boundary)"
println(contentType)
request.addValue(contentType, forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
request.addValue("\(user.sessionName)=\(user.sessionId)", forHTTPHeaderField: "Cookie")
request.addValue(user.sessionId, forHTTPHeaderField: user.sessionName)
request.addValue(user.token, forHTTPHeaderField: "X-CSRF-Token")
println(request.allHTTPHeaderFields)
var body = NSMutableData()
body.appendData("\r\n--\(boundary)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("Content-Disposition: form-data; name=\"field_name\"\r\n\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("field_mobileinfo_image".dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: true)!)
body.appendData("\r\n--\(boundary)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("Content-Disposition: form-data; name=\"files[field_mobileinfo_image]\"; filename=\"img.jpg\"\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("Content-Type: application/octet-stream\r\n\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData(imageData)
body.appendData("\r\n--\(boundary)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
var returnData = NSURLConnection.sendSynchronousRequest(request, returningResponse: nil, error: nil)
var returnString = NSString(data: returnData!, encoding: NSUTF8StringEncoding)
println("returnString \(returnString)")
}
使用SRWebClient:
func upload3(mobileInfo: MobileInfo) {
let user = userService.load()
let imageData:NSData = NSData(data: UIImageJPEGRepresentation(mobileInfo.image, 0.3))
SRWebClient.POST("http://master.test.lesfrontaliers.lu/node/\(mobileInfo.id)/attach_file")
.headers(["Accept": "application/json",
user.sessionName: user.sessionId,
"X-CSRF-Token": user.token,
"Cookie": "\(user.sessionName)=\(user.sessionId)"])
.data(imageData, fieldName:"files[field_mobileinfo_image]", data:["field_name":"field_mobileinfo_image"])
.send({ (response: AnyObject!, status: Int) -> Void in
println(status)
println(response)
},failure:{(error:NSError!) -> Void in
println(error)
})
}
请救救我! ;-)我做了很多尝试,使其无法正常工作,如果做错了,我再也看不到。 对我来说似乎还可以。 我能看到的唯一区别是,我没有将映像存储在文件系统上,而是直接发送二进制数据,这最终是相同的。
这是在邮递员中创建的请求的图像(工作和接收json)
[编辑]如果可以帮助某人,则这是上述手动请求中错误部分的正确代码:
var body = NSMutableData()
body.appendData("--\(boundary)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("Content-Disposition: form-data; name=\"field_name\"\r\n\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("field_mobileinfo_image\r\n".dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: true)!)
body.appendData("--\(boundary)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("Content-Disposition: form-data; name=\"files[field_mobileinfo_image]\"; filename=\"img.jpg\"\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("Content-Type: image/jpeg\r\n\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData(imageData)
body.appendData("\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("--\(boundary)--\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
request.HTTPBody = body
不知道这是否能满足您的要求,但是我们使用它来上传图像,主要区别在于使用filename
和Content-type
:
[self appendBody:body data:[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\".jpg\"\r\n", key]];
[self appendBody:body data:@"Content-Type: image/jpeg\r\n\r\n"];
[body appendData:imageData];
对于任何快速的2.0 JSON请求和PHP代码:-(手册)
let imageData = UIImageJPEGRepresentation(userImage, 0.3)
let url:NSURL = NSURL(string: serverURL!)! // Give ur request URL
let request = NSMutableURLRequest(URL: url)
request.HTTPMethod = "POST"
let boundary = "---------------------------14737809831466499882746641449"
let contentType = "multipart/form-data; boundary=\(boundary)"
request.addValue(contentType, forHTTPHeaderField: "Content-Type")
let body = NSMutableData()
body.appendData("--\(boundary)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("Content-Disposition: form-data; name=\"userfile\"; filename=\"img.jpg\"\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("Content-Type: image/jpeg\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("Content-Transfer-Encoding: binary\r\n\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData(imageData!)
body.appendData("\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("--\(boundary)--\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
request.HTTPBody = body
PHP代码:-
<?php
//http://192.168.1.154/Contact/uploadImgwebservice.php
//print the username and password using php
echo $_POST[‘username’];
echo $_POST[‘password’];
//upload your file
$uploaddir = ‘./uploads/’;
$file = basename($_FILES[‘userfile’][‘name’]);
$uploadfile = $uploaddir . $file;
if (move_uploaded_file($_FILES[‘userfile’][‘tmp_name’], $uploadfile)) {
echo “http://192.168.1.154/Contact/uploads/{$file}”;
}
?>
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