[英]What is wrong with this C# XML Deserialization code?
我已经读了很多文章,之前我已经以这种方式完成了序列化,但是我的生活我无法弄清楚为什么以下内容无法正常工作。
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给出以下代码:
用于反序列化的POCO类:
[XmlRoot]
public class MyResponseClass
{
[XmlElement("response")]
public Response Response { get; set; }
}
[XmlRoot]
public class Response
{
[XmlElement("error")]
public Error Error { get; set; }
[XmlElement("sid")]
public string Sid { get; set; }
}
[XmlRoot]
public class Error
{
[XmlElement("error_msg")]
public string ErrorMessage { get; set; }
}
请求和响应处理代码:
var webClient = _webClientWrapperFactory.Create();
var url = "https://serviceendpoint.com";
var responseString = webClient.DownloadString(url);
MyResponseClass result;
var serializer = new XmlSerializer(typeof(MyResponseClass));
using (var reader = new StringReader(responseString))
{
result = (MyResponseClass) serializer.Deserialize(reader);
}
return result;
返回此响应:
<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?><response><error><error_msg>CANNOT_LOGIN</error_msg></error></response>
反序列化尝试将引发以下错误:
System.Xml.dll中发生类型为'System.InvalidOperationException'的异常,但未在用户代码中处理
附加信息:XML文档(1,57)中有错误。
编辑:内部异常:
{"<response xmlns=''> was not expected."}
我创建了MyResponseClass
一个快速实例并将其序列化:
<?xml version="1.0" encoding="utf-16"?>
<MyResponseClass xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<response>
<error>
<error_msg>error message text</error_msg>
</error>
<sid>(sid string)</sid>
</response>
</MyResponseClass>
这就是MyResponseClass
XML外观。 这是我使用的序列化代码:
MyResponseClass result1 = new MyResponseClass
{
Response = new Response
{
Sid = "(sid string)",
Error = new Error
{
ErrorMessage = "error message text"
}
}
};
var serializer = new XmlSerializer(typeof(MyResponseClass));
string serialized = "";
using (StringWriter textWriter = new StringWriter())
{
serializer.Serialize(textWriter, result1);
serialized = textWriter.ToString();
}
但这可能不是您想要的。
如果要坚持使用问题中的XML,则需要省去MyResponseClass
并指定Response
(作为XML根)全部为小写:
[XmlRoot("response")]
public class Response
{
[XmlElement("error")]
public Error Error { get; set; }
[XmlElement("sid")]
public string Sid { get; set; }
}
...
var responseString = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?><response><error><error_msg>CANNOT_LOGIN</error_msg></error></response>";
var serializer2 = new XmlSerializer(typeof(Response));
//using (StringWriter textWriter = new StringWriter())
//{
// serializer2.Serialize(textWriter, result1.Response);
// responseString = textWriter.ToString();
//}
Response result;
using (var reader = new StringReader(responseString))
{
result = (Response)serializer2.Deserialize(reader);
}
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