雅虎天气API无法连接C＃

问题描述：

雅虎天气API本周更改了URL，我的应用现在无法连接。请在下面的代码中看到新的URL，并在下面评论旧的URL。雅虎天气API无法连接C＃

private void GetWeather() 
{ 
    try 
    { 
     string query = String.Format("https://query.yahooapis.com/v1/public/yql?q=" + Settings.Default.WOEID.ToString() + "&u=" + Settings.Default.Temperature); 
     //string query = String.Format("https://weather.yahooapis.com/forecastrss?w=" + Settings.Default.WOEID.ToString() + "&u=" + Settings.Default.Temperature); 
     XmlDocument wData = new XmlDocument(); 
     wData.Load(query); 

     XmlNamespaceManager man = new XmlNamespaceManager(wData.NameTable); 
     man.AddNamespace("yweather", "http://xml.weather.yahoo.com/ns/rss/1.0"); 

     XmlNode channel = wData.SelectSingleNode("rss").SelectSingleNode("channel"); 
     XmlNodeList nodes = wData.SelectNodes("/query/results/channel/item/yweather:forecast", man); 
     //XmlNodeList nodes = wData.SelectNodes("/rss/channel/item/yweather:forecast", man); 

     Temperature = channel.SelectSingleNode("item").SelectSingleNode("yweather:condition", man).Attributes["temp"].Value; 

     Condition = channel.SelectSingleNode("item").SelectSingleNode("yweather:condition", man).Attributes["text"].Value; 

     Humidity = channel.SelectSingleNode("yweather:atmosphere", man).Attributes["humidity"].Value; 

     WinSpeed = channel.SelectSingleNode("yweather:wind", man).Attributes["speed"].Value; 

     Town = channel.SelectSingleNode("yweather:location", man).Attributes["city"].Value; 

     TFCond = channel.SelectSingleNode("item").SelectSingleNode("yweather:forecast", man).Attributes["text"].Value; 

     TFHigh = channel.SelectSingleNode("item").SelectSingleNode("yweather:forecast", man).Attributes["high"].Value; 

     TFLow = channel.SelectSingleNode("item").SelectSingleNode("yweather:forecast", man).Attributes["low"].Value; 

     QEvent = "connected"; 
    } 
    catch { QEvent = "failed"; } 
}

我得到以下错误：

Exception: Exception thrown: 'System.Net.WebException' in System.dll ("The remote server returned an error: (400) Bad Request."). Exception thrown: 'System.Net.WebException' in System.dll ("The remote server returned an error: (400) Bad Request.") 12.32s [11632]

您发送到服务的内容也需要更改。检查他们的API文档以查看您缺少或重命名的字段。 – Amy

每当有人使用上述异常处理反模式，上帝杀死一只小猫。 –

@Amy API文档已过时，我不知道我缺少什么字段或应该更改。 –

答

尝试更改URL，以

string query = String.Format("https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20weather.forecast%20where%20woeid%20in%20(" + Settings.Default.WOEID.ToString() + ")%20and%20u%20%3D%20%27" + Settings.Default.Temperature + "%27&format=xml&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys");

编辑：

我不知道在哪里的文档，但这个URL 。
给

<query xmlns:yahoo="http://www.yahooapis.com/v1/base.rng" yahoo:count="1" yahoo:created="2017-07-31T17:50:38Z" yahoo:lang="en-US"> 
<results> 
<channel> 
<yweather:units xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" 
distance="mi" pressure="in" speed="mph" temperature="F"/> 
<title>Yahoo! Weather - Seattle, WA, US</title> 
<link> 
http://us.rd.yahoo.com/dailynews/rss/weather/Country__Country/*https://weather.yahoo.com/country/state/city-2490383/ 
</link> 
<description>Yahoo! Weather for Seattle, WA, US</description> 
<language>en-us</language> 
<lastBuildDate>Mon, 31 Jul 2017 10:50 AM PDT</lastBuildDate> 
<ttl>60</ttl> 
<yweather:location xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" city="Seattle" country="United States" region=" WA"/> 
<yweather:wind xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" chill="66" direction="0" speed="14"/> 
<yweather:atmosphere xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" humidity="64" pressure="1023.0" rising="0" visibility="16.1"/> 
<yweather:astronomy xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" sunrise="5:45 am" sunset="8:45 pm"/> 
<image> 
<title>Yahoo! Weather</title> 
<width>142</width> 
<height>18</height> 
<link>http://weather.yahoo.com</link> 
<url> 
http://l.yimg.com/a/i/brand/purplelogo//uh/us/news-wea.gif 
</url> 
</image> 
<item> 
<title>Conditions for Seattle, WA, US at 10:00 AM PDT</title> 
<geo:lat xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#">47.603561</geo:lat> 
<geo:long xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#">-122.329437</geo:long> 
<link> 
http://us.rd.yahoo.com/dailynews/rss/weather/Country__Country/*https://weather.yahoo.com/country/state/city-2490383/ 
</link> 
<pubDate>Mon, 31 Jul 2017 10:00 AM PDT</pubDate> 
<yweather:condition xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" code="32" date="Mon, 31 Jul 2017 10:00 AM PDT" temp="66" text="Sunny"/> 
<yweather:forecast xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" code="32" date="31 Jul 2017" day="Mon" high="77" low="58" text="Sunny"/> 
<yweather:forecast xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" code="32" date="01 Aug 2017" day="Tue" high="80" low="60" text="Sunny"/> 
<yweather:forecast xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" code="32" date="02 Aug 2017" day="Wed" high="84" low="64" text="Sunny"/> 
<yweather:forecast xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" code="32" date="03 Aug 2017" day="Thu" high="87" low="67" text="Sunny"/> 
<yweather:forecast xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" code="34" date="04 Aug 2017" day="Fri" high="89" low="67" text="Mostly Sunny"/> 
<yweather:forecast xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" code="30" date="05 Aug 2017" day="Sat" high="84" low="65" text="Partly Cloudy"/> 
<yweather:forecast xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" code="34" date="06 Aug 2017" day="Sun" high="79" low="65" text="Mostly Sunny"/> 
<yweather:forecast xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" code="34" date="07 Aug 2017" day="Mon" high="76" low="62" text="Mostly Sunny"/> 
<yweather:forecast xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" code="34" date="08 Aug 2017" day="Tue" high="78" low="62" text="Mostly Sunny"/> 
<yweather:forecast xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" code="34" date="09 Aug 2017" day="Wed" high="80" low="63" text="Mostly Sunny"/> 
<description> 
<![CDATA[<img src="http://l.yimg.com/a/i/us/we/52/32.gif"/> <BR /> <b>Current Conditions:</b> <BR />Sunny <BR /> <BR /> <b>Forecast:</b> <BR /> Mon - Sunny. High: 77Low: 58 <BR /> Tue - Sunny. High: 80Low: 60 <BR /> Wed - Sunny. High: 84Low: 64 <BR /> Thu - Sunny. High: 87Low: 67 <BR /> Fri - Mostly Sunny. High: 89Low: 67 <BR /> <BR /> <a href="http://us.rd.yahoo.com/dailynews/rss/weather/Country__Country/*https://weather.yahoo.com/country/state/city-2490383/">Full Forecast at Yahoo! Weather</a> <BR /> <BR /> (provided by <a href="http://www.weather.com" >The Weather Channel</a>) <BR /> ]]> 
</description> 
<guid isPermaLink="false"/> 
</item> 
</channel> 
</results> 
</query> 
    <!-- total: 5 -->

我得到和以前一样的错误，你知道如何找到更新的文档吗？ –

答

我找到了解决方案来更新我的旧代码，它再次工作。我会将其粘贴给其他有问题的人。

private void GetWeather() 
    { 
     try 
     { 
      String query = String.Format("https://query.yahooapis.com/v1/public/yql?q=select * from weather.forecast where woeid in (select woeid from geo.places(1) where text='nederweert, lm')&format=xml&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys"); 
      XmlDocument wData = new XmlDocument(); 
      wData.Load(query); 

      XmlNamespaceManager man = new XmlNamespaceManager(wData.NameTable); 
      man.AddNamespace("yweather", "http://xml.weather.yahoo.com/ns/rss/1.0"); 

      XmlNode channel = wData.SelectSingleNode("query").SelectSingleNode("results").SelectSingleNode("channel"); 
      XmlNodeList nodes = wData.SelectNodes("/query/results/channel"); 

      Temperature = channel.SelectSingleNode("item").SelectSingleNode("yweather:condition", man).Attributes["temp"].Value; 

      Condition = channel.SelectSingleNode("item").SelectSingleNode("yweather:condition", man).Attributes["text"].Value; 

      Humidity = channel.SelectSingleNode("yweather:atmosphere", man).Attributes["humidity"].Value; 

      WinSpeed = channel.SelectSingleNode("yweather:wind", man).Attributes["speed"].Value; 

      Town = channel.SelectSingleNode("yweather:location", man).Attributes["city"].Value; 

      TFCond = channel.SelectSingleNode("item").SelectSingleNode("yweather:forecast", man).Attributes["text"].Value; 

      TFHigh = channel.SelectSingleNode("item").SelectSingleNode("yweather:forecast", man).Attributes["high"].Value; 

      TFLow = channel.SelectSingleNode("item").SelectSingleNode("yweather:forecast", man).Attributes["low"].Value; 

      QEvent = "connected"; 
     } 
     catch { QEvent = "failed"; } 
    }

URL，XmlNode通道和XmlNodelist节点已更改。

雅虎天气API无法连接C＃

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