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我正在开发一个 Windows Phone 应用程序。访问 bing 地图时，加载 xml 文档时发生异常“XmlException - 名称不能以'开头。' 字符”在线XDocument result = XDocument.Load(r);帮助。

这是我的代码

private void locationtoaddress()
    {
        String url = "http://dev.virtualearth.net/REST/v1/Locations/" + latitude + "," + longitude + "?o=xml&key=" + bingKey;
        WebClient wc = new WebClient();
        wc.DownloadStringAsync(new Uri(url));
        wc.DownloadStringCompleted += wc_DownloadStringCompleted;
    }

    void wc_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
    {
        string s = e.Result;
        XmlReader r = XmlReader.Create(new MemoryStream(UnicodeEncoding.Unicode.GetBytes(s)));
        XDocument result = XDocument.Load(r);
        var abc= result.Root.GetDefaultNamespace();
        var address1 = from query in result.Descendants(abc + "Location")
                       select new Location
                       {
                           address = (string)query.Element(abc + "Name")
                       };
        Location loc = new Location();
        MessageBox.Show(loc.address);
                }

这是我得到的 s 的值

<?xml version="1.0" encoding="utf-8"?><Response xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://schemas.microsoft.com/search/local/ws/rest/v1"><Copyright>Copyright © 2013 Microsoft and its suppliers. All rights reserved. This API cannot be accessed and the content and any results may not be used, reproduced or transmitted in any manner without express written permission from Microsoft Corporation.</Copyright><BrandLogoUri>http://dev.virtualearth.net/Branding/logo_powered_by.png</BrandLogoUri><StatusCode>200</StatusCode><StatusDescription>OK</StatusDescription><AuthenticationResultCode>ValidCredentials</AuthenticationResultCode><TraceId>a017c5068e364703bc8bdbb58f508d96|SINM001009|02.00.139.700|SINMSNVM001117, 32.151</TraceId><ResourceSets><ResourceSet><EstimatedTotal>5</EstimatedTotal><Resources><Location><Name>NH-49, Sampatti Puram, Madurai, India</Name><Point><Latitude>9.9334483</Latitude><Longitude>78.0918096</Longitude></Point><BoundingBox><SouthLatitude>9.9334153</SouthLatitude><WestLongitude>78.0918519</WestLongitude><NorthLatitude>9.9339407</NorthLatitude><EastLongitude>78.0909383</EastLongitude></BoundingBox><EntityType>Address</EntityType><Address><AddressLine>NH-49</AddressLine><AdminDistrict>Tamil Nadu</AdminDistrict><AdminDistrict2>Madurai</AdminDistrict2><CountryRegion>India</CountryRegion><FormattedAddress>NH-49, Sampatti Puram, Madurai, India</FormattedAddress><Locality>Madurai</Locality></Address><Confidence>Medium</Confidence><MatchCode>Good</MatchCode><GeocodePoint><Latitude>9.9334483</Latitude><Longitude>78.0918096</Longitude><CalculationMethod>Interpolation</CalculationMethod><UsageType>Display</UsageType><UsageType>Route</UsageType></GeocodePoint></Location><Location><Name>NH-49, Sampatti Puram, Madurai, India</Name><Point><Latitude>9.9334153</Latitude><Longitude>78.0918519</Longitude></Point><BoundingBox><SouthLatitude>9.9332373</SouthLatitude><WestLongitude>78.0920988</WestLongitude><NorthLatitude>9.9334153</NorthLatitude><EastLongitude>78.0918519</EastLongitude></BoundingBox><EntityType>Address</EntityType><Address><AddressLine>NH-49</AddressLine><AdminDistrict>Tamil Nadu</AdminDistrict><AdminDistrict2>Madurai</AdminDistrict2><CountryRegion>India</CountryRegion><FormattedAddress>NH-49, Sampatti Puram, Madurai, India</FormattedAddress><Locality>Madurai</Locality></Address><Confidence>Medium</Confidence><MatchCode>Good</MatchCode><GeocodePoint><Latitude>9.9334153</Latitude><Longitude>78.0918519</Longitude><CalculationMethod>Interpolation</CalculationMethod><UsageType>Display</UsageType><UsageType>Route</UsageType></GeocodePoint></Location><Location><Name>Bethaniapuram, Madurai, India</Name><Point><Latitude>9.9334153</Latitude><Longitude>78.0918519</Longitude></Point><BoundingBox><SouthLatitude>9.9334153</SouthLatitude><WestLongitude>78.0918519</WestLongitude><NorthLatitude>9.9345254</NorthLatitude><EastLongitude>78.0910617</EastLongitude></BoundingBox><EntityType>Address</EntityType><Address><AddressLine>Bethaniapuram</AddressLine><AdminDistrict>Tamil Nadu</AdminDistrict><AdminDistrict2>Madurai</AdminDistrict2><CountryRegion>India</CountryRegion><FormattedAddress>Bethaniapuram, Madurai, India</FormattedAddress><Locality>Madurai</Locality></Address><Confidence>Medium</Confidence><MatchCode>Good</MatchCode><GeocodePoint><Latitude>9.9334153</Latitude><Longitude>78.0918519</Longitude><CalculationMethod>Interpolation</CalculationMethod><UsageType>Display</UsageType><UsageType>Route</UsageType></GeocodePoint></Location><Location><Name>Sampatti Puram, Madurai, India</Name><Point><Latitude>9.9328814</Latitude><Longitude>78.0917037</Longitude></Point><BoundingBox><SouthLatitude>9.9328051</SouthLatitude><WestLongitude>78.0919259</WestLongitude><NorthLatitude>9.9328814</NorthLatitude><EastLongitude>78.0917037</EastLongitude></BoundingBox><EntityType>Address</EntityType><Address><AddressLine>Sampatti Puram</AddressLine><AdminDistrict>Tamil Nadu</AdminDistrict><AdminDistrict2>Madurai</AdminDistrict2><CountryRegion>India</CountryRegion><FormattedAddress>Sampatti Puram, Madurai, India</FormattedAddress><Locality>Madurai</Locality></Address><Confidence>Medium</Confidence><MatchCode>Good</MatchCode><GeocodePoint><Latitude>9.9328814</Latitude><Longitude>78.0917037</Longitude><CalculationMethod>Interpolation</CalculationMethod><UsageType>Display</UsageType><UsageType>Route</UsageType></GeocodePoint></Location><Location><Name>Bharathiyar Street, Sampatti Puram, Madurai, India</Name><Point><Latitude>9.9330578</Latitude><Longitude>78.092027</Longitude></Point><BoundingBox><SouthLatitude>9.9328051</SouthLatitude><WestLongitude>78.0919259</WestLongitude><NorthLatitude>9.9332373</NorthLatitude><EastLongitude>78.0920988</EastLongitude></BoundingBox><EntityType>Address</EntityType><Address><AddressLine>Bharathiyar Street</AddressLine><AdminDistrict>Tamil Nadu</AdminDistrict><AdminDistrict2>Madurai</AdminDistrict2><CountryRegion>India</CountryRegion><FormattedAddress>Bharathiyar Street, Sampatti Puram, Madurai, India</FormattedAddress><Locality>Madurai</Locality></Address><Confidence>Medium</Confidence><MatchCode>Good</MatchCode><GeocodePoint><Latitude>9.9330578</Latitude><Longitude>78.092027</Longitude><CalculationMethod>Interpolation</CalculationMethod><UsageType>Display</UsageType><UsageType>Route</UsageType></GeocodePoint></Location></Resources></ResourceSet></ResourceSets></Response>
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1 回答 1

4

您的问题是您将字符串转换为 UTF-16，即使XDocument期望 UTF-8。

要么使用正确的编码：

string s = e.Result;
XmlReader r = XmlReader.Create(new MemoryStream(Encoding.UTF8.GetBytes(s)));
XDocument result = XDocument.Load(r);

或者更简单地说，直接使用XDocument.Parse：

string s = e.Result;
XDocument result = XDocument.Parse(s);
于 2013-05-18T16:39:52.867 回答