我正在尝试在wcf服务中强加自定义错误处理程序fo rest endpoin以在错误时返回未包装的字符串
public void ProvideFault(Exception error,
MessageVersion version,
ref Message fault)
{
fault = CreateError(error.Message);
SetContentType();
}
private static void SetContentType()
{
if (WebOperationContext.Current != null)
{
var response = WebOperationContext.Current.OutgoingResponse;
response.ContentType = "text/plain";
}
}
private static Message CreateError(string message)
{
var fault = Message.CreateMessage(MessageVersion.None, "", message);
return fault;
}
此代码导致响应头为“文本/纯文本”,但错误消息仍被序列化为xml
<string xmlns="http://schemas.microsoft.com/2003/10/Serialization/">Bad Request</string>
当我将原始格式添加到创建的消息时
private static Message CreateError(string message)
{
var fault = Message.CreateMessage(MessageVersion.None, "", message);
fault.Properties.Add(WebBodyFormatMessageProperty.Name, new WebBodyFormatMessageProperty(WebContentFormat.Raw));
return fault;
}
服务停止返回。从WCF返回未包装的字符串错误的方法是什么?从ystem.ServiceModel.Channels,m.b派生有一个内部StringMessage类。我可以以某种方式实例化它?
最佳答案
尝试使用本文介绍的方法:
https://www.codeproject.com/Articles/34632/How-to-Pass-Arbitrary-Data-in-a-Message-Object-usi
private static Message CreateError(string message)
{
var fault = Message.CreateMessage(MessageVersion.None, "", new TextBodyWriter(message));
fault.Properties.Add(WebBodyFormatMessageProperty.Name, new WebBodyFormatMessageProperty(WebContentFormat.Raw));
return fault;
}
// source: https://www.codeproject.com/Articles/34632/How-to-Pass-Arbitrary-Data-in-a-Message-Object-usi
public class TextBodyWriter : BodyWriter
{
byte[] messageBytes;
public TextBodyWriter(string message)
: base(true)
{
this.messageBytes = Encoding.UTF8.GetBytes(message);
}
protected override void OnWriteBodyContents(XmlDictionaryWriter writer)
{
writer.WriteStartElement("Binary");
writer.WriteBase64(this.messageBytes, 0, this.messageBytes.Length);
writer.WriteEndElement();
}
}
关于c# - IErrorHandler WCF配置为返回文本/纯文本,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/52968569/