如何从响应中找到HTTP媒体类型(MIME类型)? [英] How to find HTTP Media Type (MIME type) from response?

问题描述

使用Apache HTTP Client v4发出 GET 请求时，如何获取响应媒体类型(正式为MIME类型)?

While issuing a GET request using Apache HTTP Client v4, how do I obtain the response media type (formally MIME type)?

使用Apache HTTP Client v3，可以通过以下方式获得MIME类型:

Using Apache HTTP Client v3, the MIME type was obtained with:

 String mimeType = response.getMimeType();

如何使用Apache HTTP Client v4获取媒体类型?

How do I get the media type using Apache HTTP Client v4?

推荐答案

"Content-type" HTTP标头应为您提供mime类型信息:

A "Content-type" HTTP header should give you mime type information:

Header contentType = response.getFirstHeader("Content-Type");

或为

Header contentType = response.getEntity().getContentType();

然后，您可以提取mime类型本身，因为content-type可能还包含编码.

Then you can extract mime type itself as the content-type may include encoding as well.

String mimeType = contentType.getValue().split(";")[0].trim();

当然，在获取标头的值之前，请不要忘记进行空检查(以防内容类型标头不是由服务器发送).

Of course, don't forget about null-check before getting value of the header (in case the content-type header is not sent by server).

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