[英]Unable to parse XML from Webservice using SWXMLHash
我有以下使用SWXMLHash的代碼-但是XML解析器似乎無法處理它。 我檢查了URL以確保它返回數據:
let baseUrl = "http://apps.hha.co.uk/mis/Api/getlivesensors.aspx?key=6fb21537-fb4e-4fe4-b07a-d8d68567c9d1"
var request = URLRequest(url: NSURL(string: baseUrl)! as URL)
let session = URLSession.shared
request.httpMethod = "GET"
//var err: NSError?
let task = session.dataTask(with: request as URLRequest) {
(data, response, error) in
if data == nil {
print("dataTaskWithRequest error: \(error)")
return
}
let xml = SWXMLHash.parse(data!)
if (xml["Sensors"]["Sensor"]["Name"].element?.text) != nil
//if (xml["Sensors"]["Sensor"]["Name"].element?.text) != nil
{
self.sensors.add(xml["Sensors"]["Sensor"]["Name"].element?.text as Any)
}
DispatchQueue.main.async(execute : {
print(self.sensors)
})
}
task.resume()
// but obviously don't try to use it here here
我從url獲得的XML是這樣的(標記已關閉-我只是沒有包含它們):
<Sensors>
<Sensor>
<ID>12</ID>
<Name>EFM W.level</Name>
<Series>Level</Series>
<Unit>m</Unit>
<Values>
<Value CreatedOn="2017-01-08T13:50:00" Value="0.69"/>
<Value CreatedOn="2017-01-08T14:00:00" Value="0.72"/>
<Value CreatedOn="2017-01-08T14:10:00" Value="0.77"/>
<Value CreatedOn="2017-01-08T14:20:00" Value="0.82"/>
<Value CreatedOn="2017-01-08T14:30:00" Value="0.87"/>
有多個Sensor
元素,但只有一個Sensors
元素。
因此,代替:
xml["Sensors"]["Sensor"]["Name"].element?.text
您應該具有以下內容:
xml["Sensors"]["Sensor"][0]["Name"].element?.text
這將使第一個傳感器脫離返回的組。
要遍歷傳感器,您將獲得以下內容:
for sensor in xml["Sensors"]["Sensor"].all {
sessors.add(sensor["Name"].element?.text)
}
希望這可以幫助!
好。 我已經解決了問題。 問題出在我從服務器收到的XML文件中。 看起來它是UTF-8格式,但是文檔說它是UTF-16。 因此,我現在將接收到的數據對象轉換為UTF-8 NSString,然后將其轉換為String! 請參見下面的代碼:
let baseUrl = "http://apps.hha.co.uk/mis/Api/getlivesensors.aspx?key=6fb21537-fb4e-4fe4-b07a-d8d68567c9d1"
var request = URLRequest(url: NSURL(string: baseUrl)! as URL)
let session = URLSession.shared
request.httpMethod = "GET"
let task = session.dataTask(with: request as URLRequest) {
(data, response, error) in
if data == nil {
print("dataTaskWithRequest error: \(error)")
return
}
let dataString = NSString(data: data!, encoding: String.Encoding.utf8.rawValue)?.replacingOccurrences(of: "utf-16", with: "utf-8")
let xml = SWXMLHash.parse(dataString! as String)
//let xml = SWXMLHash.parse(dataString!)
if (xml["Sensors"]["Sensor"][0]["Name"].element?.text) != nil
{
self.sensors.add(xml["Sensors"]["Sensor"][0]["Name"].element?.text as Any)
}
DispatchQueue.main.async(execute : {
print(self.sensors)
})
}
task.resume()
// but obviously don't try to use it here here
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