解析Swift中的多部分SOAP响应

Question

我正试图从soap服务下载一个文件，在成功请求后，我得到了以下内容

响应标头

multipart/related; type="application/xop+xml"; boundary="uuid:917b60a9-3089-43ad-a8c2-b4a3c62db98c"; start="<[e-mail]>"; start-info="text/xml"

响应体

--uuid:0a679f64-0753-44fe-b627-2267b5b72b1d
Content-Type: application/xop+xml; charset=UTF-8; type="text/xml"
Content-Transfer-Encoding: binary
Content-ID: <[e-mail]>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"><soap:Body><ns2:leseDokumentResponse xmlns:ns2="http://webservice/"><return><status>OK</status><dokument><xop:Include xmlns:xop="http://www.w3.org/2004/08/xop/include" href="cid:[e-mail]"/></dokument></return></ns2:leseDokumentResponse></soap:Body></soap:Envelope>
--uuid:0a679f64-0753-44fe-b627-2267b5b72b1d
Content-Type: application/octet-stream
Content-Transfer-Encoding: binary
Content-ID: <[e-mail]>
... binary data ...
--uuid:0a679f64-0753-44fe-b627-2267b5b72b1d--

如何解析文件二进制数据？

我试过这些问题，但都不起作用解析http多部分响应解析ios 中的图像下载多部分响应

Answer 1

使用MultipartKit 可以很容易地解析多部分SOAP响应

我在Alamofire的DataResponse上创建了一个扩展来处理响应

import Alamofire
import MultipartKit
import Swime
extension DataResponse where Success == Data {
var boundary: String? {
let header = response?.allHeaderFields.first(where: {
$0.key as? String == "Content-Type"
})
let scanner = Scanner(string: header?.value as? String ?? "")
_ = scanner.scanUpToString("boundary="")
_ = scanner.scanString("boundary="")
let boundary = scanner.scanUpToString("";")
return boundary
}
func multipartParts() -> [MultipartPart] {
guard let boundary = boundary else { return [] }
guard let data = try? result.get() else { return [] }
let parser = MultipartParser(boundary: boundary)
var parts: [MultipartPart] = []
var headers: HTTPHeaders = [:]
var body: Data = Data()
parser.onHeader = { (field, value) in
headers.replaceOrAdd(name: field, value: value)
}
parser.onBody = { new in
body.append(contentsOf: new.readableBytesView)
}
parser.onPartComplete = {
let part = MultipartPart(headers: headers, body: body)
headers = [:]
body = Data()
parts.append(part)
}
do {
try parser.execute(data)
} catch {
print(error.localizedDescription)
}
return parts
}
func parseMultipart() -> (message: String, files: [Data])? {
let parts = multipartParts()
let message = parts.first(where: { $0.id == "<[e-mail]>" })?.body.string ?? ""
let dataPart = parts.filter { $0.id != "<[e-mail]>" }
let files = dataPart.compactMap { Data(multipart: $0) }
return (message, files)
}
}
extension ByteBuffer {
var string: String {
return String(decoding: self.readableBytesView, as: UTF8.self)
}
}
extension MultipartPart {
/// Gets or sets the `name` attribute from the part's `"Content-ID"` header.
public var id: String? {
get { self.headers.first(name: "Content-ID") }
}
}

然后可以用于这样的数据响应：

let request = SessionManager.request(urlRequest).responseData(completionHandler: { response in
switch response.result {
case .failure(let error):
self.alert(error)
case .success:
guard let parts = response.parseMultipart() else { return }
DispatchQueue.main.async {
self.loadResponse(message: parts.message, files: parts.files)
}
}
})

消息id可能不同，所以我可能建议检查类型太

希望这能帮助到别人。