javascript EXTJS 4 - 全局异常监听器
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EXTJS 4 - Global exception listener
提问by user798612
I have a situation where I am making ajaxrequests to a server from various Ext gridpaneletc. In an Admin area.
我有一种情况，我ajax从各种分机gridpanel等向服务器发出请求。在管理区域。
The logged in user will be logged out if there is no activity for eg. 5 minutes which is normal.
如果没有活动，例如，登录的用户将被注销。5分钟是正常的。
In this case the server sends back a redirect 403to the login page.
在这种情况下，服务器会发送回403登录页面的重定向。
Right now I am inserting a:
现在我正在插入一个：
listeners: {
exception: function(proxy, response, operation, eOpts) {
if (response.status == '403')
window.location = 'login';
}
}
To every store'sproxy which is a little overkill.
对于每个store's代理来说，这有点矫枉过正。
Could someone be kind enough and let me know how I could add a listener to all communications between ExtJS and server?
有人可以友好地告诉我如何为 ExtJS 和服务器之间的所有通信添加侦听器吗？
I am using the MVC Application Architecture so it could probably be a one liner in the controller.jsor app.js.
我正在使用 MVC 应用程序架构，因此它可能是controller.js或app.js.
Thanks
谢谢
回答by Sascha
In the beginning of your app insert the following snippet. With this EVERYresponse, whether it's from a store or a form or ..., will be checked and redirect to login page.
在您的应用程序的开头插入以下代码段。有了这个每一个响应，无论是来自商店、表单还是......，都将被检查并重定向到登录页面。
Ext.Ajax.on('requestexception', function (conn, response, options) {
if (response.status === 403) {
window.location = 'login';
}
});
回答by nightwatch
I'm not really sure if this will catch all ajax requests but assuming you're using AjaxProxy for all communication with the server it should work: handle the 'requestexception' event in the Ext.Ajax singleton something like this
我不确定这是否会捕获所有 ajax 请求，但假设您使用 AjaxProxy 与服务器进行所有通信，它应该可以工作：处理 Ext.Ajax 单例中的“requestexception”事件，如下所示
Ext.Ajax.on('requestexception', function(conn, response, options, eOpts) {
//your error handling here
});
I haven't tried it but if you do, could you post an update here?
我还没有尝试过，但如果你尝试过，你能在这里发布更新吗？
回答by Carlos Jaime C. De Leon
A more complete solution, wherein it will be a catch-all is this:
一个更完整的解决方案，其中它将是一个包罗万象的：
Ext.util.Observable.observe(Ext.data.Connection, {
requestexception: function(conn, response, options) {
if(response.status == '403')
window.location = 'login';
}
});
This is because the underlying class, Ext.data.Connectionis used not only in Ext.Ajaxbut as well as the Ext.data.Proxythat is used by Ext.data.Store, Ext.data.Model. This handles exceptions on such calls as store.load()and model.save(). This should be a more complete catch-all handler.
这是因为基础类，Ext.data.Connection不仅用于 ，Ext.Ajax而且还Ext.data.Proxy用于Ext.data.Store, Ext.data.Model. 这会处理诸如store.load()and 之类的调用的异常model.save()。这应该是一个更完整的包罗万象的处理程序。
See more details in my blog post.
