显然 HttpClient
是发出 HTTP 请求的新推荐方式,因此我尝试使用它向 Delicious API 发出请求,后者返回 XML 响应。这是我得到的:
internal class Program
{
private static void Main(string[] args)
{
var credentials = new NetworkCredential("username", "password");
var handler = new HttpClientHandler { Credentials = credentials};
var client = new HttpClient(handler);
var suggest = new Uri("https://api.del.icio.us/v1/posts/suggest");
var suggestions =
client.GetAsync(suggest.AddQueryParams("url", "https://yahoo.com"))
.ContinueWith(t => t.Result.Content.ReadAsAsync<DeliciousSuggest>())
.Unwrap()
.Result;
Console.ReadLine();
}
}
public class DeliciousSuggest
{
public string[] Popular { get; set; }
public string[] Recommended { get; set; }
public string[] Network { get; set; }
}
但是,它会在 ReadAsAsync
位上引发异常,
Additional information: Could not load file or assembly 'Newtonsoft.Json, Version=4.5.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed' or one of its dependencies. The system cannot find the file specified.
也许我错过了一些集会,但这让我觉得很不对劲。返回类型是 XML,而不是 JSON,但我仍然不太确定这个 ReadAsAsync
方法是如何工作的,或者我什至如何指定它。
示例响应如下所示:
<?xml version=\"1.0\" encoding=\"UTF-8\"?>
<suggest>
<popular>yahoo!</popular>
<popular>yahoo</popular>
<popular>web</popular>
<popular>tools</popular>
<popular>searchengines</popular>
<recommended>yahoo!</recommended>
<recommended>yahoo</recommended>
<recommended>web</recommended>
<network>for:Bernard</network>
<network>for:britta</network>
<network>for:deusx</network>
</suggest>
我怎样才能将它解析成一些可用的格式?
最佳答案
“我怎样才能将它解析成一些可用的格式?”
[XmlRoot("suggest")]
public class DeliciousSuggest {
[XmlElement("popular")]
public string[] Popular { get; set; }
[XmlElement("recommended")]
public string[] Recommended { get; set; }
[XmlElement("network")]
public string[] Network { get; set; }
}
并使用 XmlSerializer 反序列化。
你应该从 del.icio.us 读取响应作为一个字符串,然后你可以反序列化它如下:
var s = "this is the response from del";
var buffer = Encoding.UTF8.GetBytes(s);
using (var stream = new MemoryStream(buffer)) {
var serializer = new XmlSerializer(typeof(DeliciousSuggest));
var deliciousSuggest = (DeliciousSuggest)serializer.Deserialize(stream);
//then do whatever you want
}
关于c# - 如何使用 HttpClient 读取 XML 响应?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/19942486/