将对象发布到json中的wcf rest服务会返回名称空间错误 [英] Post object to a wcf rest service in json returns namespace error
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问题描述
我正尝试使用wcf-rest服务将news
对象添加到数据库中,如您所见:
I am trying to add a news
object to my database using wcf-rest service as you can see:
Guid id;
id = Guid.NewGuid();
var httpWebRequest = (HttpWebRequest)WebRequest.Create("http://localhost:47026/NewsRepository.svc/AddNews");
httpWebRequest.ContentType = "application/json";
httpWebRequest.Method = "PUT";
JsonSerializerSettings microsoftDateFormatSettings = new JsonSerializerSettings
{
DateFormatHandling = DateFormatHandling.MicrosoftDateFormat
};
string json = JsonConvert.SerializeObject(new
{
Id = id,
Subject = "wfwf",
ViewerCounter = "1",
Content = "fsdsd",
SubmitDateTime = "2012/12/12",
ModifiedDateTime = "2012/12/12",
PublisherName = "sdaadasd",
PictureAddress = "adfafsd",
TypeOfNews = "adsadaad"
}, microsoftDateFormatSettings);
using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
JsonSerializer serializer = new JsonSerializer();
serializer.Serialize(streamWriter, json);
}
try {
var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
var result = streamReader.ReadToEnd();
}
}
catch(Exception er)
{
MessageBox.Show(er.ToString());
}
但是它返回了错误的请求400.因此我在WCF日志中跟踪了错误,然后发现了这一点:
But it returns bad request 400 .so I traced the error in WCF log and I found this:
Expecting state 'Element'.. Encountered 'Text' with name '', namespace ''.
这是我的服务代码:
[OperationContract]
[WebInvoke(Method = "PUT", UriTemplate = "/AddNews", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json)]
bool Add(News entity);
还有
public class NewsRepository :INewsRepository
{
private readonly DataContext _ctx;
public NewsRepository(DataContext ctx)
{
_ctx = ctx;
}
public bool Add(News entity)
{
try
{
_ctx.News.Add(entity);
_ctx.SaveChanges();
return true;
}
还有我的新闻模型
[DataContract]
public class News
{
[DataMember]
public Guid Id { set; get; }
[DataMember]
public string Subject { set; get; }
[DataMember]
public int ViewerCounter { set; get; }
[DataMember]
public string MainContent { set; get; }
[DataMember]
public DateTime SubmitDateTime { set; get; }
[DataMember]
public DateTime ModifiedDateTime { set; get; }
[DataMember]
public string PublisherName { set; get; }
[DataMember]
public string PictureAddress { set; get; }
[DataMember]
public string TypeOfNews { set; get; }//etelaeie ya khabar
}
更改代码
Guid id;
id = Guid.NewGuid();
var httpWebRequest = (HttpWebRequest)WebRequest.Create("http://localhost:47026/NewsRepository.svc/AddNews");
httpWebRequest.ContentType = "application/json";
httpWebRequest.Method = "POST";
JsonSerializerSettings microsoftDateFormatSettings = new JsonSerializerSettings
{
DateFormatHandling = DateFormatHandling.MicrosoftDateFormat
};
string json = JsonConvert.SerializeObject(new News()
{
Id = id,
Subject = "wfwf",
ViewerCounter = 1, // removed the "" (string)
MainContent = "fsdsd", // renamed from "Content"
SubmitDateTime = DateTime.Now,
ModifiedDateTime = DateTime.Now,
PublisherName = "sdaadasd",
PictureAddress = "adfafsd",
TypeOfNews = "adsadaad"
}, microsoftDateFormatSettings);
using (StreamWriter streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
JsonSerializer serializer = new JsonSerializer();
serializer.Serialize(streamWriter, json);
}
try {
var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
var result = streamReader.ReadToEnd();
}
}
catch(Exception er)
{
MessageBox.Show(er.ToString());
}
但是同样的错误
推荐答案
最终解决方案:
News student = new News
{
Id = Guid.NewGuid(),
Subject = "wfwf",
ViewerCounter = 1, // removed the "" (string)
MainContent = "fsdsd", // renamed from "Content"
SubmitDateTime = DateTime.Now,
ModifiedDateTime = DateTime.Now,
PublisherName = "sdaadasd",
PictureAddress = "adfafsd",
TypeOfNews = "adsadaad"
};
WebClient Proxy1 = new WebClient();
Proxy1.Headers["Content-type"] = "application/json";
MemoryStream ms = new MemoryStream();
DataContractJsonSerializer serializerToUplaod = new DataContractJsonSerializer(typeof(News));
serializerToUplaod.WriteObject(ms, student);
Proxy1.UploadData("http://localhost:47026/NewsRepository.svc/AddNews", "POST", ms.ToArray());
这篇关于将对象发布到json中的wcf rest服务会返回名称空间错误的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
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