I would like to know why this is not working. Could someone share a better way to get information from a website. Here I'm trying to grab a price of and item from HomeDepot Website. Then display it in a label called lblmessage.
let url = URL(string:"http://www.homedepot.com/p/SAKRETE-80-lb-Gray-Concrete-Mix-65200390/100350291?MERCH=REC-_-NavPLPHorizontal1_rr-_-NA-_-100350291-_-N")!
let request = NSMutableURLRequest(url: url)
let task = URLSession.shared.dataTask(with: request as URLRequest) {
data, response, error in
var message = ""
if error != nil {
print(error)
}else {
if let unwrappedData = data {
let dataString = NSString(data: unwrappedData, encoding: String.Encoding.utf8.rawValue)
var stringSeparator = "<span id=\"ajaxPriceAlt\" class=\"pReg\" itemprop=\"price\">"
if let contentArray = dataString?.components(separatedBy: stringSeparator) {
if contentArray.count > 0 {
stringSeparator = "</span>"
let newContentArray = contentArray[1].components(separatedBy: stringSeparator)
if newContentArray.count > 0 {
message = newContentArray[0]
print(newContentArray[0])
self.lblmessage.stringValue = newContentArray[0]
}
}
}
}
}
Related
I am trying to make my own DynamicIP updater as a command line tool so I can set it up to run as a launch agent. I thought this would be a pretty simple thing to do, but I am not getting anything when I run this bit of code.
main.swift:
import AppKit
let userName = "yourUserName"
let password = "yourPassword"
let domain = "yourDomainName"
let ftp = "ftp"
let www = "www"
let checkIPURL = URL(string: "https://svc.joker.com/nic/checkip")
let domainUpdateURL = URL(string: "https://svc.joker.com/nic/update?username=\(userName)&password=\(password)&hostname=\(domain)")
let ftpUpdateURL = URL(string: "https://svc.joker.com/nic/update?username=\(userName)&password=\(password)&hostname=\(ftp).\(domain)")
let wwwUpdateURL = URL(string: "https://svc.joker.com/nic/update?username=\(userName)&password=\(password)&hostname=\(www).\(domain)")
var ipAddress = ""
if let url = checkIPURL {
print("1 - \(url)")
var request = URLRequest(url: url)
print("2 - \(request.url!)")
request.httpMethod = "POST"
print("3")
let session = URLSession.shared
print("4")
session.dataTask(with: request) { data, response, error in
print("4.1")
guard error == nil else {
print("Error:", error ?? "")
return
}
print("4.2")
guard (response as? HTTPURLResponse)?
.statusCode == 200 else {
print("down")
return
}
print("4.3")
if let data = data {
if let dataString = String(decoding: data, as: UTF8.self).removeHtmlTags() {
if let startIndex = dataString.lastIndex(of: " ") {
let chars = dataString.distance(from: startIndex, to: dataString.endIndex)-1
ipAddress = String(dataString.suffix(chars))
}
}
print(ipAddress)
} else {
print("No data")
}
print("up - \(response!)")
}.resume()
print("Done.")
}
extension String {
// Credit - Andrew - https://stackoverflow.com/questions/25983558/stripping-out-html-tags-from-a-string
func removeHtmlTags() -> String? {
do {
guard let data = self.data(using: .utf8) else {
return nil
}
let attributed = try NSAttributedString(data: data, options: [.documentType: NSAttributedString.DocumentType.html, .characterEncoding: String.Encoding.utf8.rawValue], documentAttributes: nil)
return attributed.string
} catch {
return nil
}
}
}
Everything outside of the session prints, but nothing inside of it prints (4.x statements).
I deleted the AppSandbox because when I have AppSandbox as a Capability and turn on Outgoing Connections I get a crash with EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0).
But even with AppSandbox deleted it does not work.
The strange thing is this works fine in a playground (with a slight modification turning the String extension into a function within the playground), which really makes this a head scratcher for me.
Here's my playground code:
import AppKit
let userName = "yourUserName"
let password = "yourPassword"
let domain = "yourDomainName"
let ftp = "ftp"
let www = "www"
let checkIPURL = URL(string: "https://svc.joker.com/nic/checkip")
let domainUpdateURL = URL(string: "https://svc.joker.com/nic/update?username=\(userName)&password=\(password)&hostname=\(domain)")
let ftpUpdateURL = URL(string: "https://svc.joker.com/nic/update?username=\(userName)&password=\(password)&hostname=\(ftp).\(domain)")
let wwwUpdateURL = URL(string: "https://svc.joker.com/nic/update?username=\(userName)&password=\(password)&hostname=\(www).\(domain)")
var ipAddress = ""
if let url = checkIPURL {
print("1 - \(url)")
var request = URLRequest(url: url)
print("2 - \(request.url!)")
request.httpMethod = "POST"
print("3")
let session = URLSession.shared
print("4")
session.dataTask(with: request) { data, response, error in
print("4.1")
guard error == nil else {
print("Error:", error ?? "")
return
}
print("4.2")
guard (response as? HTTPURLResponse)?
.statusCode == 200 else {
print("down")
return
}
print("4.3")
if let data = data {
//if let dataString = String(decoding: data, as: UTF8.self).removeHtmlTags() {
if let dataString = removeHtmlTags(data: data) {
if let startIndex = dataString.lastIndex(of: " ") {
let chars = dataString.distance(from: startIndex, to: dataString.endIndex)-1
ipAddress = String(dataString.suffix(chars))
}
}
print(ipAddress)
} else {
print("No data")
}
print("up - \(response!)")
}.resume()
print("Done.")
}
func removeHtmlTags(data: Data) -> String? {
do {
let attributed = try NSAttributedString(data: data, options: [.documentType: NSAttributedString.DocumentType.html, .characterEncoding: String.Encoding.utf8.rawValue], documentAttributes: nil)
return attributed.string
} catch {
return nil
}
}
Is there something else I need to do to get this to work within the command line tool app I am trying to build?
I am trying to upload multiple file to the server by my iPhone. The problem is that when I try to upload 1.4 mb file it could not upload properly. I checked the uploaded file and the file size is 1 kb. So I made this code based on the postman. As you know the postman can create the code according to which language do you want. Thank you.
function uploadFile(){
var parameters: [[String: Any]] = []
var fileCount: Int = 0
let homeDirectory = ""
var soundPath = "\(homeDirectory)\(CommonUtil.PATH_SOUND)"
soundPath = soundPath.replacingOccurrences(of: "file:///", with: "")
//fiels[0] = ["fileName" : "2021_10_19_09_12_52.wav"]
//fiels[1] = ["fileName" : "2021_10_19_09_12_53.wav"]
//fiels[3] = ["fileName" : "2021_10_19_09_12_54.wav"]
for item in files{
var dict = item as! [String:String]
let strFilePath = "\(soundPath)\(dict["fileName"]!)"
if FileManager.default.fileExists(atPath: strFilePath){
var dict = [String:Any]()
dict.updateValue("strFileName[\(fileCount)]", forKey: "key")
dict.updateValue(strFilePath, forKey: "src")
dict.updateValue("file", forKey: "type")
parameters.append(dict)
fileCount++
}
print(dict["fileName"]!)
}
var dict = [String:Any]()
dict.updateValue("strApiName", forKey: "key")
dict.updateValue("soundFileUpload", forKey: "value")
dict.updateValue("text", forKey: "type")
parameters.append(dict)
uploadFiles(parameters: parameters)
}
func uploadFiles(parameters: [[String: Any]]){
var semaphore = DispatchSemaphore(value: 0)
let boundary = "Boundary - \(UUID().uuidString)"
var body = ""
var error: Error? = nil
for param in parameters {
if param["disabled"] == nil {
let paramName = param["key"]!
body += "--\(boundary)\r\n"
body += "Content-Disposition:form-data; name=\"\(paramName)\""
if param["contentType"] != nil {
body += "\r\nContent-Type: \(param["contentType"] as! String)"
}
let paramType = param["type"] as! String
if paramType == "text" {
let paramValue = param["value"] as! String
body += "\r\n\r\n\(paramValue)\r\n"
} else {
let paramSrc = param["src"] as! String
//let fileData = URL(string: paramSrc)?.dataRepresentation ?? Data()
let fileData = try! NSData(contentsOfFile:paramSrc, options:[]) as Data
let fileContent = String(data: fileData, encoding: .utf8)
body += "; filename=\"\("file:///"+paramSrc)\"\r\n"
+ "Content-Type: \"content-type header\"\r\n\r\n\(fileContent)\r\n"
}
}
}
body += "--\(boundary)--\r\n";
let postData = body.data(using: .utf8)
var request = URLRequest(url: URL(string: "http://api.polytus.com/")!,timeoutInterval: Double.infinity)
request.addValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")
request.httpMethod = "POST"
request.httpBody = postData
let task = URLSession.shared.dataTask(with: request) { data, response, error in
guard let data = data else {
DispatchQueue.main.async {
self.showLoading(show: false)
self.showBluetoothAlert(message: "failed")
}
print(String(describing: error))
semaphore.signal()
return
}
DispatchQueue.main.async {
self.showLoading(show: false)
self.showBluetoothAlert(message: "success")
}
print(String(data: data, encoding: .utf8)!)
semaphore.signal()
}
task.resume()
semaphore.wait()
}
For what I've understand you want to know the file size in the server filesystem. If this is you want you have to use an API that give you back the data, after the file is uploaded and moved from temporary web server space to final location. In brief you need to do 2 request, one for upload and one for getting the file data (space or any other data needed), or develop an API that give you as answer of the correct upload the file size.
I am new in Swift and SwiftUI. I need to send a POST request to the server when a button is clicked. The request is sent, everything is fine.
ShareHelper.swift:
import Foundation
class ShareHelper {
var dataString: String = ""
var newsMessage: String
var newsUser: String
var newsEmail: String
var newsMedia: String
let newsAPI: String = "https://example.com/api/shareNews"
init(message: String, user: String, email: String, media: String) {
self.newsMessage = message
self.newsUser = user
self.newsEmail = email
self.newsMedia = media
self.RequestPost()
}
func RequestPost() {
let url = URL(string: self.newsAPI)
guard let requestUrl = url else { fatalError() }
var request = URLRequest(url: requestUrl)
request.httpMethod = "POST"
let postString = "message=\(self.newsMessage)&user=\(self.newsUser)&email=\(self.newsEmail)&media=\(self.newsMedia)"
request.httpBody = postString.data(using: String.Encoding.utf8)
let task = URLSession.shared.dataTask(with: request) { (data, response, error) in
if error != nil {
return
}
if let data = data, let dataString = String(data: data, encoding: .utf8) {
self.dataString = dataString
}
}
task.resume()
}
}
Button from ContentView.swift
Button(action: {
let shareHelper = ShareHelper(message: self.textAreaText, user: self.inputUser, email: self.inputEmail, media: self.inputMedia)
shareHelper.RequestPost()
print("Share helper: \(shareHelper.dataString)")
}, label: {
Text("Send")
})
How to make a message appear in the console if POST request successful sending?
You need to use completion block.
func RequestPost(completion: #escaping((String) -> Void)) {
let url = URL(string: self.newsAPI)
guard let requestUrl = url else { fatalError() }
var request = URLRequest(url: requestUrl)
request.httpMethod = "POST"
let postString = "message=\(self.newsMessage)&user=\(self.newsUser)&email=\(self.newsEmail)&media=\(self.newsMedia)"
request.httpBody = postString.data(using: String.Encoding.utf8)
let task = URLSession.shared.dataTask(with: request) { (data, response, error) in
if error != nil {
return
}
if let data = data, let dataString = String(data: data, encoding: .utf8) {
DispatchQueue.main.async {
self.dataString = dataString
completion(dataString)
}
}
}
task.resume()
}
And on button
Button(action: {
let shareHelper = ShareHelper(message: "self.textAreaText", user: "self.inputUser", email: "self.inputEmail", media: "self.inputMedia")
shareHelper.RequestPost { (dataString) in
print("Share helper: \(shareHelper.dataString)")
// Or
print("Share helper: \(dataString)")
}
}, label: {
Text("Send")
})
I am trying to get a list of events from the meetup's api. Its crashes when request mulitple times as it states can only request once and is limited to 200 requests. I am getting groups then using the "urlName" api call to get the event coming up for that group. The result would be an array of events from a bunch of meetup groups. Here is my code.
func getEventsFromMeetup(complete: (groups: [Meetup], succes: Bool) -> Void) {
var currentUserInterests = [String]()
let config = NSURLSessionConfiguration.defaultSessionConfiguration()
let session = NSURLSession(configuration: config)
let recommendedBaseUrl = "https://api.meetup.com/recommended/groups?key=\(meetupAPIKey)"
let url = NSURL(string: recommendedBaseUrl)
let request = NSMutableURLRequest(URL: url!)
request.HTTPMethod = "GET"
session.dataTaskWithRequest(request) { (data, response, error) in
guard error == nil else {
print(error)
complete(groups: [Meetup](), succes: false)
return
}
guard let data = data else {
print("Error with data")
complete(groups: [Meetup](), succes: false)
return
}
do {
let json = try NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.AllowFragments) as! [NSDictionary]
var groups = [Meetup]()
CurrentUserFM.sharedInstance.getCurrentUserInterests { (interests) in
currentUserInterests = interests
var ints = [String]()
print(json.count)
for j in json {
let m = Meetup(data: j)
ints.append(m.name!)
if let i = m.interestName {
if currentUserInterests.contains(i) {
groups.append(m)
}
}
print("ints: \(ints.count)")
print("json: \(json.count)")
if Int(ints.count) >= Int(json.count) {
dispatch_async(dispatch_get_main_queue(), {
complete(groups: groups, succes: true)
return
})
}
}
}
}catch {
print(error)
}
}.resume()
}
func getEventsForGroups(completionHandler: (meetupEvents: [MeetupEvent]) -> ()) {
self.getEventsFromMeetup { (groups, success) in
var meetupEvents1 = [MeetupEvent]()
var ints = [String]()
for group in groups {
let eventBaseUrl = "https://api.meetup.com/\(group.urlname!)?key=\(meetupAPIKey)"
let url = NSURL(string: eventBaseUrl)
let request = NSMutableURLRequest(URL: url!)
let config = NSURLSessionConfiguration.defaultSessionConfiguration()
let session = NSURLSession(configuration: config)
session.dataTaskWithRequest(request, completionHandler: { (data, reponse, error) in
guard error == nil else {
print(error)
return
}
guard let data = data else {
print("Error with data")
return
}
do {
let json = try NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.AllowFragments)
let m = MeetupEvent()
if let name = json["name"] as? String {
m.name = name
}
if let link = json["link"] as? String {
m.link = link
}
if let interestName = group.name {
m.interestName = interestName
}
if let image = json["key_photo"]??["thumb_link"] as? String {
m.image = image
}
meetupEvents1.append(m)
ints.append("1")
if Int(ints.count) >= Int(groups.count) {
dispatch_async(dispatch_get_main_queue(), {
completionHandler(meetupEvents: meetupEvents1)
return
})
}
}catch {
print(error)
}
}).resume()
}
}
}
Any suggestions on how to get the events from the groups so that the app wont crash from meetup calls?
I'm trying o work out the correct (or at least a good) way to handle data request using Swift 2.
What i want to achieve is to:
Check if a data connection is available, if no then alert the user
If connection is available make a request
Check request response, if invalid then alert the user
if valid, check the response code and display one of 2 messages
what i have so far
let requestURL: String = **********************
let url = NSURL(string: requestURL)!
let request = NSMutableURLRequest(URL: url)
let session = NSURLSession.sharedSession()
let postParams: NSDictionary = ["id":newId!]
request.HTTPMethod = "POST"
do {
let jsonData = try NSJSONSerialization.dataWithJSONObject(postParams, options: [])
let jsonString = NSString(data: jsonData, encoding: NSUTF8StringEncoding)! as String
let utf8str = jsonString.dataUsingEncoding(NSUTF8StringEncoding)
let base64Encoded = utf8str?.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0))
let bodyData = "data="+base64Encoded!
request.HTTPBody = bodyData.dataUsingEncoding(NSUTF8StringEncoding)
} catch {
print("Error serialising JSON")
}
session.dataTaskWithRequest(request) { data, response, error in
// Make sure response is OK
guard let realResponse = response as? NSHTTPURLResponse where realResponse.statusCode == 200 else
{
// Show success message
print("Invalid Response from server")
}
// Read JSON Data
if let postString = NSString(data:data!, encoding: NSUTF8StringEncoding) as? String {
if let responseData = postString.dataUsingEncoding(NSUTF8StringEncoding) {
let json = JSON(data: responseData)
let responseMessage:String = json["response"]["data"].stringValue
if(responseMessage == "success")
{
print("successful post")
}else{
print("error saving post")
}
}
}
}
Currently if i was to run this in airplane mode then nothing happens, but i would like to catch this and tell these they need a data connection
Try sth like this:
func connectedToNetwork() -> Bool {
var zeroAddress = sockaddr_in()
zeroAddress.sin_len = UInt8(sizeofValue(zeroAddress))
zeroAddress.sin_family = sa_family_t(AF_INET)
let defaultRouteReachability = withUnsafePointer(&zeroAddress) {
SCNetworkReachabilityCreateWithAddress(nil, UnsafePointer($0))
}
var flags = SCNetworkReachabilityFlags()
if !SCNetworkReachabilityGetFlags(defaultRouteReachability!, &flags) {
return false
}
let isReachable = (flags.rawValue & UInt32(kSCNetworkFlagsReachable)) != 0
let needsConnection = (flags.rawValue & UInt32(kSCNetworkFlagsConnectionRequired)) != 0
return (isReachable && !needsConnection)
}
if(connectedToNetwork() == true){
//call your function to make the request
} else {
//show alert that they need an internet connection
}