我试图将数据发布到MVC控制器操作但到目前为止一直没有成功.
以下是帖子数据的结构：
private string makeHttpPostString(XmlDocument interchangeFile)
{
string postDataString = "uid={0}&localization={1}&label={2}&interchangeDocument={3}";
InterchangeDocument interchangeDocument = new InterchangeDocument(interchangeFile);
using (var stringWriter = new StringWriter())
using (var xmlTextWriter = XmlWriter.Create(stringWriter))
{
interchangeFile.Writeto(xmlTextWriter);
string interchangeXml = HttpUtility.UrlEncode(stringWriter.GetStringBuilder().ToString());
string hwid = interchangeDocument.DocumentKey.Hwid;
string localization = interchangeDocument.DocumentKey.Localization.ToString();
string label = ConfigurationManager.AppSettings["PreviewLabel"];
return (string.Format(postDataString,hwid,localization,label,interchangeXml));
}
}
这是请求：
HttpWebRequest webRequest = (HttpWebRequest) WebRequest.Create(controllerUrl);
webRequest.Method = "POST";
// webRequest.ContentType = "application/x-www-form-urlencoded";
string postData = makeHttpPostString(interchangeFile);
byte[] byteArray = Encoding.UTF8.GetBytes(postData);
webRequest.ContentLength = byteArray.Length;
using (Stream dataStream = webRequest.GetRequestStream())
{
dataStream.Write(byteArray,byteArray.Length);
}
HttpWebResponse webresponse = (HttpWebResponse) webRequest.GetResponse();
当我将请求的contenttype设置为“application / x-www-form-urlencoded”GetReponse()失败,服务器错误代码为500.当我评论出来并且只对httpscode的xml数据“interchangeXml”进行评论时,发送帖子但只有第3个参数“label”到达控制器.其他人都是空的.
当其中一个值是xml数据时,将值发布到控制器操作的正确方法是什么？
谢谢！
更新
我通过查询字符串发送除XML之外的所有参数.但是,现在的问题是我不知道如何访问控制器操作中的发布数据.有人能告诉我如何使用我的Controller Action从HttpRequest访问xml吗？
更新
我已经重构了上面的代码来使用Darin给我的建议.我正在使用WebClient UploadValues()接收内部服务器错误(500).
行动：
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult BuildPreview(Previewviewmodel model)
{
...
}
请求：
private string PostToSxController(XmlDocument interchangeFile,string controllerUrl)
{
var xmlInterchange = new InterchangeDocument(interchangeFile);
using (var client = new WebClient())
{
var values = new NameValueCollection()
{
{"uid",xmlInterchange.DocumentKey.Hwid},{"localization",xmlInterchange.DocumentKey.Localization.ToString()},{"label",ConfigurationManager.AppSettings["PreviewLabel"]},{"interchangeDocument",interchangeFile.OuterXml }
};
byte[] result = null;
try
{
result = client.UploadValues(controllerUrl,values);
}
catch(WebException ex)
{
var errorResponse = ex.Response;
var errorMessage = ex.Message;
}
Encoding encoding = Encoding.UTF8;
return encoding.GetString(result);
}
}
路线：
routes.MapRoute(
"BuildPreview","SymptomTopics/BuildPreview/{model}",new { controller = "SymptomTopics",action = "BuildPreview",model = UrlParameter.Optional }
);
解决方法
客户端代码过于复杂且不安全,包含所有这些请求和响应.您没有编码任何请求参数,更不用说这个XML,如果你没有正确编码它可能会打破一切.
出于这个原因,我将简化并将关于编码等的管道代码留给.NET框架：
using (var client = new WebClient())
{
var values = new NameValueCollection
{
{ "uid",hwid },{ "localization",localization },{ "label",label },{ "interchangeDocument",interchangeFile.OuterXml },};
var result = client.UploadValues(controllerUrl,values);
// Todo: do something with the results returned by the controller action
}
就服务器端而言,作为每个正确构建的ASP.NET MVC应用程序,它显然会使用视图模型：
public class Myviewmodel
{
public string Uid { get; set; }
public string Localization { get; set; }
public string Label { get; set; }
public string InterchangeDocument { get; set; }
}
有：
[HttpPost]
public ActionResult Foo(Myviewmodel model)
{
// Todo: do something with the values here
...
}
显然,通过编写反映XML文档结构的视图模型,可以更进一步：
public class Foo
{
public string Bar { get; set; }
public string Baz { get; set; }
}
然后您的视图模型将变为：
public class Myviewmodel
{
public string Uid { get; set; }
public string Localization { get; set; }
public string Label { get; set; }
public Foo InterchangeDocument { get; set; }
}
最后一部分是为Foo类型编写一个自定义模型绑定器,它将使用XML序列化程序(或其他)将InterchangeDocument POSTed值反序列化为Foo实例.现在这是严肃的事情.