Signalr-无法读取服务器上的查询字符串 [英] Signalr - Can't read query strings on server
问题描述
我在这里疯了.我做了chatHub教程,一切正常.我连接到服务器.我可以向每个客户广播一条消息.
I'm going crazy here. I did the chatHub tutorial and everything works fine. I connect to the server. I can broadcast a message to every client.
然后我尝试添加查询字符串,因为我希望获得有关用户的一些信息,因为许多用户可以在同一会话中进行连接.
Then I tried to add query strings because I would like to have some information on my user as many user can connect in the same session.
这是我的javascript
This is my javascript
(function ($) {
// Declare a proxy to reference the hub.
var chat = $.connection.chatHub;
//chat.state.userName = "test";
//chat.qs = "userToken3=blablabla";
chat.qs = { 'uid' : '2541fdsf862d' };
//$.connection.chatHub.qs = {"userToken2" : 125457};
// Create a function that the hub can call to broadcast messages.
chat.client.broadcastMessage = function (name, message) {
// Html encode display name and message.
var encodedName = $('<div />').text(name).html();
var encodedMsg = $('<div />').text(message).html();
// Add the message to the page.
$('#discussion').append('<li><strong>' + encodedName
+ '</strong>: ' + encodedMsg + '</li>');
};
// Get the user name and store it to prepend to messages.
//$('#displayname').val(prompt('Enter your name:', ''));
// Set initial focus to message input box.
$('#message').focus();
// Start the connection.
$.connection.hub.start({ 'uid': '2541fdsf862d' }).done(function () {
$('#sendmessage').click(function () {
// Call the Send method on the hub.
chat.server.send("user", $('#message').val());
// Clear text box and reset focus for next comment.
$('#message').val('').focus();
});
});
})(jQuery);
如果我在此函数中设置断点时查看监视列表,则可以看到查询字符串"uid"设置正确.
If I take a look at my watchlist when I set a breakpoint in this function, I can see that the query string "uid" is perfectly set.
但是在服务器上,我无法读取参数.
However on the server, I can't read the parameter.
public override Task OnConnected()
{
string name = Context.User.Identity.Name;
var caller = Clients.Caller;
var username = Clients.Caller.userName;
var queryString = Context.Request.QueryString;
var queryString2 = Context.QueryString;
var uid = Context.QueryString["uid"];
_connections.Add(name, Context.ConnectionId);
return base.OnConnected();
}
在这种情况下,uid为null.如果我查看服务器上的send方法:
In this situation, uid is null. If I look at the send method on the server:
[Authorize]
public void Send(string name, string message)
{
// Call the broadcastMessage method to update clients.
Clients.All.broadcastMessage(name, message);
var queryString = Context.Request.QueryString;
var context = Context;
}
uid
在queryString
变量中不可用.
我的代码有什么问题?有人有任何线索吗?
What is wrong with my code? Does anyone have any clue?
推荐答案
我刚刚找到了解决方案.这是因为我必须通过$.connection.hub
而不是通过chat.qs
I've just found the solution. It's because I have to pass the query string via $.connection.hub
and not via chat.qs
所以,解决方案是
$.connection.hub.qs = { 'uid': '2541fdsf862d' };
这篇关于Signalr-无法读取服务器上的查询字符串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!