用POST请求代替GET请求怎么样? (无论如何你应该……)

我使用new Date().getTime()，这将避免冲突，除非你有多个请求发生在同一毫秒内:

$.get('/getdata?_=' + new Date().getTime(), function(data) {
    console.log(data); 
});

编辑:这个答案是几年前的了。它仍然可以工作(因此我没有删除它)，但现在有更好/更干净的方法来实现这一点。我倾向于使用这种方法，但是如果您想在页面的生命周期内为每个请求禁用缓存，那么这个答案也很有用。

The real question is why you need this to not be cached. If it should not be cached because it changes all the time, the server should specify to not cache the resource. If it just changes sometimes (because one of the resources it depends on can change), and if the client code has a way of knowing about it, it can append a dummy parameter to the url that is computed from some hash or last modified date of those resources (that's what we do in Microsoft Ajax script resources so they can be cached forever but new versions can still be served as they appear). If the client can't know of changes, the correct way should be for the server to handle HEAD requests properly and tell the client whether to use the cached version or not. Seems to me like appending a random parameter or telling from the client to never cache is wrong because cacheability is a property of the server resource, and so should be decided server-side. Another question to ask oneself is should this resource really be served through GET or should it go through POST? That is a question of semantics, but it also has security implications (there are attacks that work only if the server allows for GET). POST will not get cached.

我个人觉得查询字符串方法比试图在服务器上设置头文件更可靠——不能保证代理或浏览器不会缓存它(有些浏览器比其他浏览器更差——没有命名)。

我通常使用Math.random()，但我不认为使用日期有任何错误(您不应该以足够快的速度执行AJAX请求来两次获得相同的值)。

JQuery的$.get()将缓存结果。而不是

$.get("myurl", myCallback)

你应该使用$。Ajax，它将允许你关闭缓存:

$.ajax({url: "myurl", success: myCallback, cache: false});

如果你正在使用ie9，那么你需要在你的控制器类定义前使用以下代码:

[OutputCache（NoStore = true， duration = 0， VaryByParam = “*”）]

公共类TestController:控制器

这将阻止浏览器缓存。

有关此连结的详情: http://dougwilsonsa.wordpress.com/2011/04/29/disabling-ie9-ajax-response-caching-asp-net-mvc-3-jquery/

实际上这解决了我的问题。