javascript 为 ServerXMLHTTP 请求设置超时
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Setting a timeout for ServerXMLHTTP request
提问by Choy
Does anyone know how to set up set up a default action for when a ServerXMLHTTP request times out? I'm using setTimeouts() to set the time out options according to the MSDN site.
有谁知道如何为 ServerXMLHTTP 请求超时设置默认操作？我正在使用 setTimeouts() 根据MSDN 站点设置超时选项。
Ideally I would like to initialize the request again from the beginning or refresh the page should it time out.
理想情况下，我想从头开始再次初始化请求，或者在超时时刷新页面。
I'm using classic asp and jscript.
我正在使用经典的 asp 和 jscript。
Here's my request:
这是我的要求：
function serverXmlHttp(url) {
var serverXmlHttp;
serverXmlHttp = Server.CreateObject("Msxml2.ServerXMLHTTP.6.0");
// set time out options
serverXmlHttp.setTimeouts(15000,15000,15000,15000);
// does not work
// serverXmlHttp.ontimeout(Response.Write("page has timed out"));
serverXmlHttp.open("GET", url, false);
serverXmlHttp.send();
if (serverXmlHttp.readyState == 4) {
return serverXmlHttp.responseText;
}
}
采纳答案by Choy
Figured it out. I just need to use a try/catch statement.
弄清楚了。我只需要使用 try/catch 语句。
function serverXmlHttp(url) {
try {
var serverXmlHttp;
serverXmlHttp = Server.CreateObject("Msxml2.ServerXMLHTTP.6.0");
// set time out options
serverXmlHttp.setTimeouts(15000,15000,15000,15000);
serverXmlHttp.open("GET", url, false);
serverXmlHttp.send();
if (serverXmlHttp.readyState == 4) {
return serverXmlHttp.responseText;
}
catch(error) {
// whatever I want to happen if there's an error
Response.Write("Sorry, your request has timed out");
}
}
回答by Gabriele Petrioli
The important thing is to find out why it is timing out ..
重要的是找出它超时的原因..
Is the remote Url on the same application as the calling page ?
远程 URL 是否与调用页面位于同一应用程序上？
if so have a look at INFO: Do Not Send ServerXMLHTTP or WinHTTP Requests to the Same Serveras you will be facing thread starvation ..
如果是，请查看信息：不要将 ServerXMLHTTP 或 WinHTTP 请求发送到同一台服务器，因为您将面临线程饥饿..
