也可以通过将代码放在Global.asax.cs中来实现
protected void Application_BeginRequest(object sender, EventArgs e)
{
// Create byte array to hold request bytes
byte[] inputStream = new byte[HttpContext.Current.Request.ContentLength];
// Read entire request inputstream
HttpContext.Current.Request.InputStream.Read(inputStream, 0, inputStream.Length);
//Set stream back to beginning
HttpContext.Current.Request.InputStream.Position = 0;
//Get XML request
string requestString = ASCIIEncoding.ASCII.GetString(inputStream);
}
我的 Web 服务中有一个 Utility 方法,用于在发生我不希望发生的事情时捕获请求,例如未处理的异常。
/// <summary>
/// Captures raw XML request and writes to FailedSubmission folder.
/// </summary>
internal static void CaptureRequest()
{
const string procName = "CaptureRequest";
try
{
log.WarnFormat("{0} - Writing XML request to FailedSubmission folder", procName);
byte[] inputStream = new byte[HttpContext.Current.Request.ContentLength];
//Get current stream position so we can set it back to that after logging
Int64 currentStreamPosition = HttpContext.Current.Request.InputStream.Position;
HttpContext.Current.Request.InputStream.Position = 0;
HttpContext.Current.Request.InputStream.Read(inputStream, 0, HttpContext.Current.Request.ContentLength);
//Set back stream position to original position
HttpContext.Current.Request.InputStream.Position = currentStreamPosition;
string xml = ASCIIEncoding.ASCII.GetString(inputStream);
string fileName = Guid.NewGuid().ToString() + ".xml";
log.WarnFormat("{0} - Request being written to filename: {1}", procName, fileName);
File.WriteAllText(Configuration.FailedSubmissionsFolder + fileName, xml);
}
catch
{
}
}
然后在 web.config 中我存储了几个 AppSetting 值,这些值定义了我想使用什么级别来捕获请求。
<!-- true/false - If true will write to an XML file the raw request when any Unhandled exception occurrs -->
<add key="CaptureRequestOnUnhandledException" value="true"/>
<!-- true/false - If true will write to an XML file the raw request when any type of error is returned to the client-->
<add key="CaptureRequestOnAllFailures" value="false"/>
<!-- true/false - If true will write to an XML file the raw request for every request to the web service -->
<add key="CaptureAllRequests" value="false"/>
然后在我的 Application_BeginRequest 中,我将其修改为这样。请注意,Configuration 是我创建的一个静态类,用于从 web.config 和其他区域读取属性。
protected void Application_BeginRequest(object sender, EventArgs e)
{
if(Configuration.CaptureAllRequests)
{
Utility.CaptureRequest();
}
}