獲取最新貨幣

-1

我想寫一個簡單的控制檯應用程序，顯示最新的美元貨幣。數據將來自國家銀行採取 - http://www.nbg.ge/rss.php 獲取最新貨幣

這裏是我的代碼：

 string data = string.Empty; 
     string url = "http://www.nbg.ge/rss.php"; 
     string html = string.Empty; 
     string pattern = "USD</td>\r\n<td align=\"right\">(.*)</td>"; 
     DateTime today = DateTime.Now; 
     data = today.Date.ToShortDateString(); 
     HttpWebRequest myHttpWebRequest = (HttpWebRequest)HttpWebRequest.Create(url); 
     HttpWebResponse myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse(); 
     StreamReader myStreamReader = new StreamReader(myHttpWebResponse.GetResponseStream()); 
     html = myStreamReader.ReadToEnd(); 
     Match match = Regex.Match(html, pattern); 
     Console.WriteLine("{0} USD EXCHANGE RATE {1}.", data, match.Groups[1].ToString()); 
     Console.ReadLine();

如何從網站獲取USD數據？謝謝。

更新！

我改「模式」來string pattern = "<td.*?>(.*?)<\\/td>"; 它顯示第一個TD項目列表： 2016年5月29日美元匯率AED。

來源

2016-05-29 Luis Vito

你沒有描述問題或實際上提出問題 – Plutonix

以及你從網站獲取數據，你的問題是一個正則表達式問題，因此你必須發佈一個網站的示例輸出（'html = myStreamReader的值。 ReadToEnd（）;'） –

'USD 1 ??? ?????? 2.1461 0.0000 ' –

XML數據存在錯誤。必須使用正則表達式來修復。圖片標籤在結束標籤前缺少「/」。這是解析結果。

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Linq; 
using System.Text; 
using System.Windows.Forms; 
using System.Xml; 
using System.Xml.Linq; 
using System.Text.RegularExpressions; 


namespace WindowsFormsApplication1 
{ 
    public partial class Form1 : Form 
    { 
     const string url = "http://www.nbg.ge/rss.php"; 
     public Form1() 
     { 
      InitializeComponent(); 

      XElement rss = XElement.Load(url); 
      DataTable dt = new DataTable(); 
      dt.Columns.Add("Currency", typeof(string)); 
      dt.Columns.Add("Description", typeof(string)); 
      dt.Columns.Add("Rate", typeof(decimal)); 


      XElement description = rss.Descendants("item").FirstOrDefault().Descendants("description").FirstOrDefault(); 
      string value = description.Value; 
      value = Regex.Replace(value, "(src=\\\"[^\\\"]+\\\")", "$1/"); 
      XElement table = XElement.Parse(value); 


      foreach (XElement row in table.Descendants("tr")) 
      { 
       List<XElement> columns = row.Elements("td").ToList(); 
       dt.Rows.Add(new object[] {(string)columns[0], (string)columns[1], (decimal)columns[2]}); 
      } 
      dataGridView1.DataSource = dt; 
     } 
    } 
}

來源

2016-05-29 14:35:40 jdweng

在PHP中，你可以捲曲，SimpleXMLDocument，文件和數組助手的組合做到這一點很容易，像這樣：

 <?php 


     $defaults = array(
      CURLOPT_URL    => 'http://www.nbg.ge/rss.php', 
      CURLOPT_POST   => true, 
      CURLOPT_RETURNTRANSFER => true, 
     ); 
     $curl   = curl_init(); 
     curl_setopt_array($curl, $defaults); 

     $v = ""; 


     // SHOULD ANY ERROR OCCUR, DISPLAY THE ERROR(S), DO GARBAGE COLLECTION & TERMINATE THE PROGRAM. 
     $curl_response = curl_exec($curl); 
     if(curl_errno($curl)){ 
      var_dump(curl_error($curl)); 
      curl_close($curl); 
      exit; 
     }else{ 
      // PROCESS THE RSS FEED... 
      if($curl_response){ 
       $sxElem  = new SimpleXMLElement($curl_response); 
       $xml  = simplexml_load_string($curl_response, 'SimpleXMLElement', LIBXML_NOCDATA); //LIBXML_NOCDATA LIBXML_NOWARNING 
       foreach($xml as $key=>$data){ 

        if($a = $data->item){ 
         /**@var SimpleXMLElement $desc */ 
         $desc = $a->description; 
         $v  = print_r($a->description, true); 
        } 

       } 
      } 
     } 
     // SAVE THE DATA TO A TEXT FILE TO BE READ LINE BY LINE LATER... 
     file_put_contents("data.txt", $v); 

     // GET THE DATA FROM THE TEXT FILE AND THEN EXPLODE TO AN ARRAY 
     $data   = file_get_contents("_data.txt"); 
     $arrData  = explode("\n", $data); 
     $countryCodes = array(); 
     $exchangeRates = array(); 

     // LOOP THROUGH EACH LINE & SORT OUT THE DATA YOU NEED... 
     foreach($arrData as $lineNum=>$lineData){ 
      $countryCode = null; 
      if(preg_match("#(<td>)([A-Z]{3})(<\/td>)#", $lineData, $matches)){ 
       list(, $n1, $countryCode, $n2) = $matches; 
       if(!array_key_exists($countryCode, $exchangeRates)){ 
        $countryCodes[]  = $countryCode; 
       } 
      } 
      if(preg_match("#(<td>)([0-9\.]*)(<\/td>)#", $lineData, $matches2)){ 
       list(, $n1, $rate, $n2) = $matches2; 
       if($rate != "0.0000"){ 
        $exchangeRates[]  = $rate; 
       } 
      } 
     } 

     $arrExchange  = array_combine($countryCodes, $exchangeRates); 
     $jsonExchangeRate = json_encode($arrExchange); 

     var_dump($arrExchange); 
     var_dump($jsonExchangeRate);

第一的var_dump的結果是：

 array (size=43) 
      'AED' => string '5.8432' (length=6) 
      'AMD' => string '4.4921' (length=6) 
      'AUD' => string '1.5491' (length=6) 
      'AZN' => string '1.4388' (length=6) 
      'BGN' => string '1.2263' (length=6) 
      'BRL' => string '0.5989' (length=6) 
      'BYR' => string '1.0898' (length=6) 
      'CAD' => string '1.6465' (length=6) 
      'CHF' => string '2.1662' (length=6) 
      'CNY' => string '3.2708' (length=6) 
      'CZK' => string '0.8875' (length=6) 
      'DKK' => string '3.2253' (length=6) 
      'EGP' => string '2.4197' (length=6) 
      'EUR' => string '2.3985' (length=6) 
      'GBP' => string '3.1438' (length=6) 
      'HKD' => string '2.7637' (length=6) 
      'HUF' => string '0.7631' (length=6) 
      'ILS' => string '5.5821' (length=6) 
      'INR' => string '3.2016' (length=6) 
      'IRR' => string '0.7082' (length=6) 
      'ISK' => string '1.7194' (length=6) 
      'JPY' => string '1.9585' (length=6) 
      'KGS' => string '3.1414' (length=6) 
      'KRW' => string '1.8198' (length=6) 
      'KWD' => string '7.1039' (length=6) 
      'KZT' => string '0.6392' (length=6) 
      'MDL' => string '1.0714' (length=6) 
      'NOK' => string '2.5844' (length=6) 
      'NZD' => string '1.4469' (length=6) 
      'PLN' => string '5.4544' (length=6) 
      'QAR' => string '5.8943' (length=6) 
      'RON' => string '5.3217' (length=6) 
      'RSD' => string '1.9438' (length=6) 
      'RUB' => string '3.2531' (length=6) 
      'SEK' => string '2.5872' (length=6) 
      'SGD' => string '1.5619' (length=6) 
      'TJS' => string '2.7273' (length=6) 
      'TMT' => string '6.1317' (length=6) 
      'TRY' => string '0.7288' (length=6) 
      'UAH' => string '0.8538' (length=6) 
      'USD' => string '2.1461' (length=6) 
      'UZS' => string '0.7351' (length=6) 
      'ZAR' => string '1.3802' (length=6)

JSON等效結果爲：

'{"AED":"5.8432","AMD":"4.4921","AUD":"1.5491","AZN":"1.4388","BGN":"1.2263","BRL":"0.5989","BYR":"1.0898","CAD":"1.6465","CHF":"2.1662","CNY":"3.2708","CZK":"0.8875","DKK":"3.2253","EGP":"2.4197","EUR":"2.3985","GBP":"3.1438","HKD":"2.7637","HUF":"0.7631","ILS":"5.5821","INR":"3.2016","IRR":"0.7082","ISK":"1.7194","JPY":"1.9585","KGS":"3.1414","KRW":"1.8198","KWD":"7.1039","KZT":"0.6392","MDL":"1.0714","NOK":"2.5844","NZD":"1.4469","PLN":"5.4544","QAR":"5.8943","RON":"5.3217","RSD":"1.9438","RUB":"3.2531","'... (length=646)

來源

2016-05-29 14:40:18 Poiz

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