如何清除Cocoa中的WebView缓存？ [英] How do you clear the WebView cache in Cocoa?

问题描述

如何清除/刷新 WebView 缓存在Cocoa应用程序中？

How do you clear/flush the WebView cache in a Cocoa app?

特别是，我想清除本地样式表的缓存。

In particular, I would like to clear the cache of a local stylesheet.

我试过下面的没有效果：

I have tried the following to no avail:

// Tried this before loadRequest
[[NSURLCache sharedURLCache] removeAllCachedResponses];

// Also tried this before and after loadRequest
[webView.mainFrame reloadFromOrigin];

甚至用新的替换 WebView 仍然使用缓存的样式表。

Even replacing the WebView with a new one still uses the cached stylesheet.

推荐答案

其他建议的解决方案不适用于本地样式表资源）。

The other suggested solutions didn't work for the local stylesheet (though they should work for remote resources).

我终于设法通过

I finally managed to solve this via the resourceLoadDelegate, by explicitly setting the cache policy:

- (NSURLRequest *)webView:(WebView *)sender resource:(id)identifier willSendRequest:(NSURLRequest *)request redirectResponse:(NSURLResponse *)redirectResponse fromDataSource:(WebDataSource *)dataSource {
    request = [NSURLRequest requestWithURL:[request URL] cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:[request timeoutInterval]];
    return request;
}

有趣的东西。

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