[英]SignalR triggering events client-side in MVC3
我有一个像这样的发票进口商中心:
public class ImporterHub : Hub, IDisconnect, IConnected
{
public void InvoiceImported(InvoiceImportedMessage message)
{
Clients["importer"].InvoiceImported(message);
}
public void FileImported(FileImportedMessage message)
{
Clients["importer"].FileImported(message);
}
public System.Threading.Tasks.Task Disconnect()
{
return Clients["importer"].leave(Context.ConnectionId, DateTime.Now.ToString());
}
public System.Threading.Tasks.Task Connect()
{
return Clients["importer"].joined(Context.ConnectionId, DateTime.Now.ToString());
}
public System.Threading.Tasks.Task Reconnect(IEnumerable<string> groups)
{
return Clients["importer"].rejoined(Context.ConnectionId, DateTime.Now.ToString());
}
}
在控制器中,我正在捕获长时间运行的导入过程的事件,如下所示:
[HttpPost]
public ActionResult Index(IndexModel model)
{
if (ModelState.IsValid)
{
try
{
model.NotificationRecipient = model.NotificationRecipient.Replace(';', ',');
ImportConfiguration config = new ImportConfiguration()
{
BatchId = model.BatchId,
ReportRecipients = model.NotificationRecipient.Split(',').Select(c => c.Trim())
};
var context = GlobalHost.ConnectionManager.GetHubContext<ImporterHub>();
context.Groups.Add(this.Session.SessionID, "importer");
System.Threading.ThreadPool.QueueUserWorkItem(foo => LaunchFileImporter(config));
Log.InfoFormat("Queued the ImportProcessor to process invoices. Send Notification: {0} Email Recipient: {1}",
model.SendNotification, model.NotificationRecipient);
TempData["message"] = "The import processor job has been started.";
//return RedirectToAction("Index", "Home");
}
catch (Exception ex)
{
Log.Error("Failed to properly queue the invoice import job.", ex);
ModelState.AddModelError("", ex.Message);
}
}
private void LaunchFileImporter(ImportConfiguration config)
{
using (var processor = new ImportProcessor())
{
processor.OnFileProcessed += new InvoiceFileProcessing(InvoiceFileProcessingHandler);
processor.OnInvoiceProcessed += new InvoiceSubmitted(InvoiceSubmittedHandler);
processor.Execute(config);
}
}
private void InvoiceSubmittedHandler(object sender, InvoiceSubmittedEventArgs e)
{
var context = GlobalHost.ConnectionManager.GetHubContext<ImporterHub>();
var message = new InvoiceImportedMessage()
{
FileName = e.FileName,
TotalErrorsInFileProcessed = e.TotalErrors,
TotalInvoicesInFileProcessed = e.TotalInvoices
};
context.Clients["importer"].InvoiceImported(message);
}
private void InvoiceCollectionSubmittedHandler(object sender, InvoiceCollectionSubmittedEventArgs e)
{
}
private void InvoiceFileProcessingHandler(object sender, InvoiceFileProcessingEventArgs e)
{
var context = GlobalHost.ConnectionManager.GetHubContext<ImporterHub>();
var message = new FileImportedMessage()
{
FileName = e.FileName
};
context.Clients["importer"].FileImported(message);
}
我在进口商看来有以下脚本:
<script type="text/javascript">
jQuery.connection.hub.logging = true;
var importerHub = jQuery.connection.importerHub;
importerHub.InvoiceImported = function (message) {
jQuery('#' + message.FileName + '_Invoices').text(message.TotalInvoicesInFileProcessed);
jQuery('#' + message.FileName + '_Errors').text(message.TotalErrorsInFileProcessed);
};
importerHub.FileImported = function (message) {
jQuery('#' + message.FileName + '_Processed').text('Done');
};
jQuery.connection.hub.start();
</script>
我期望发生的事情:
我期望服务器端事件触发,这将向客户端发送消息,客户端继而触发事件以更新导入过程的状态。
似乎正在发生什么:
所有服务器端事件均已触发,一切正常。 signalR库似乎已正确初始化,但事件从未触发,并且我也从未使更新出现在屏幕上。
我究竟做错了什么? 这是我第一次使用signalR库,因此我很可能做错了所有事情。
我相信您的问题是,您的客户端中心事件是用init-caps命名的,SignalR的默认行为是在发布到客户端时将其转换为init-lower,以符合常见的JavaScript约定。 尝试将您的中心事件注册更改为此:
importerHub.invoiceImported = function (message) {
和
importerHub.fileImported = function (message) {
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