如果收到HTTP错误403，如何从JavaFx中的URL加载图像 [英] How to load images from URL in JavaFx if recieving HTTP Error 403

问题描述

我试图用我认为重复的问题和一个简单的问题帮助某人，但事实证明它稍微复杂一些，我无法给出明确的答案。 此处是原始问题。

I was trying to help someone out with what I thought was a duplicate and a simple question, but it turned out to be slightly more complicated and I couldn't give a definite answer. Here is the original question.

我使用https协议在网站上尝试使用不同图像的代码，但没有工作。然后，我拍了一些图像，并将它们添加到使用http协议的网站，他们工作了。

I tried the code with different images on sites using the https protocol and none worked. I then took some images and added them to sites that use http protocol and they worked.

所以，问题是如果托管图像的网站使用https协议，你如何在ImageView中加载图像？

So, the questions is how do you load an image in a ImageView if the site hosting the image is using https protocol?

推荐答案

这不是https问题。似乎cdn.discordapp.com在HTTP请求中需要 User-Agent 标头。此外，该网站似乎只接受User-Agent的某些格式。事实证明， wget 提供的用户代理被接受：

It’s not an https issue. It seems cdn.discordapp.com requires a User-Agent header in the HTTP request. Furthermore, the site appears to only accept certain formats for User-Agent. It turns out the User-Agent supplied by wget is accepted:

Image createImage(String url)
throws IOException {
    URLConnection conn = new URL(url).openConnection();
    conn.setRequestProperty("User-Agent", "Wget/1.13.4 (linux-gnu)");

    try (InputStream stream = conn.getInputStream()) {
        return new Image(stream);
    }
}

请求中没有User-Agent标头， site提供HTTP 403 Forbidden响应。

Without a User-Agent header in the request, the site gives an HTTP 403 Forbidden response.

这篇关于如果收到HTTP错误403，如何从JavaFx中的URL加载图像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！