blocks|key|3021132|text|这就是HTTP+refresh+header，也就是大家熟知的meta+refresh+tag。问题中的内容是与HTML+<head>中的以下行等同的HTTP响应标头|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3021133|<meta+http-equiv="refresh"+content="300"+/>|code-block|syntax|javascript|3021134|它将在给定的秒数后重新加载当前请求，就像您正在按F5一样。它是一项古老的Netscape发明，即使不是所有浏览器也支持大多数浏览器，但是这个“元”头并没有被纳入RFC+2616+-+HTTP+header+field+definitions标准。W3C还discourages该报头的使用。|3021135|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/URL_redirection#Refresh_Meta_tag_and_HTTP_refresh_header|1|http://en.wikipedia.org/wiki/Meta_refresh|2|http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html|3|http://www.w3.org/TR/WAI-WEBCONTENT/#tech-no-periodic-refresh^0|1P|6|3|J|0|V|G|1|0|0|28|14|2|3J|B|3|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@$9|13|A|14|1|15]|$9|16|A|17|1|18]]|E|$]]|$1|F|3|G|5|H|7|19|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|1A|8|@]|D|@$9|1B|A|1C|1|1D]|$9|1E|A|1F|1|1G]]|E|$]]|$1|M|3|-4|5|6|7|1H|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]|U|$5|P|Q|R|E|$S|V]]|W|$5|P|Q|R|E|$S|X]]|Y|$5|P|Q|R|E|$S|Z]]]]

That's the <a href="http://en.wikipedia.org/wiki/URL_redirection#Refresh_Meta_tag_and_HTTP_refresh_header" rel="nofollow">HTTP refresh header</a> which is better known as the <a href="http://en.wikipedia.org/wiki/Meta_refresh" rel="nofollow">meta refresh tag</a>. The one in your question is the HTTP response header equivalent of the following line in HTML <code>&lt;head&gt;</code>:

<pre class="lang-html prettyprint-override"><code>&lt;meta http-equiv="refresh" content="300" /&gt;
</code></pre>

It will reload the current request after the given amount of seconds, as if you're pressing F5. It was an old Netscape invention and supported by most if not all browsers, but this "meta" header is not taken into the <a href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html" rel="nofollow">RFC 2616 - HTTP header field definitions</a> standard. The W3C also <a href="http://www.w3.org/TR/WAI-WEBCONTENT/#tech-no-periodic-refresh" rel="nofollow">discourages</a> the use of this header.

blocks|key|743210|text|你找得不是很认真。参见http://en.wikipedia.org/wiki/URL_redirection#Refresh_Meta_tag_and_HTTP_refresh_header。刷新报头用于要求浏览器在一段延迟后重定向到另一个URL。我猜如果没有提供URL，它会重定向到相同的URL。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|743211|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/URL_redirection#Refresh_Meta_tag_and_HTTP_refresh_header^0|B|2D|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

You didn't search very hard. See <a href="http://en.wikipedia.org/wiki/URL_redirection#Refresh_Meta_tag_and_HTTP_refresh_header" rel="nofollow">http://en.wikipedia.org/wiki/URL_redirection#Refresh_Meta_tag_and_HTTP_refresh_header</a>. The refresh header is used to ask the browser to redirect to another URL after some delay. I guess it redirects to the same URL if no URL is provided.

blocks|key|739734|text|response.setHeader(...)会将HTTP头添加到响应中。这些标头由web浏览器解释。您可以在http://en.wikipedia.org/wiki/List_of_HTTP_header_fields中找到有效标头的列表|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|739735|代码中的"...proprietary，网景引入的非标准头文件“。此标头等效于元"refresh“，它在给定的时间间隔后自动刷新当前网页|739736|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/List_of_HTTP_header_fields|1|http://en.wikipedia.org/wiki/HTTP_refresh^0|0|N|1J|1J|0|0|15|7|1|0^^$0|@$1|2|3|4|5|6|7|R|8|@$9|S|A|T|B|C]]|D|@$9|U|A|V|1|W]]|E|$]]|$1|F|3|G|5|6|7|X|8|@]|D|@$9|Y|A|Z|1|10]]|E|$]]|$1|H|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]|P|$5|K|L|M|E|$N|Q]]]]

<code>response.setHeader(...)</code> adds an HTTP header to the response. These headers are interpreted by web browsers.
You can find a list of valid headers in <a href="http://en.wikipedia.org/wiki/List_of_HTTP_header_fields" rel="nofollow">http://en.wikipedia.org/wiki/List_of_HTTP_header_fields</a>

The one in your code "...proprietary, non-standard header introduced by Netscape". This header is the equivalent to meta "<a href="http://en.wikipedia.org/wiki/HTTP_refresh" rel="nofollow">refresh</a>" which automatically refreshes the current web page after the given interval

blocks|key|4636360|text|维基百科很好地解释了这一点：http://en.wikipedia.org/wiki/URL_redirection#Refresh_Meta_tag_and_HTTP_refresh_header|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4636361|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/URL_redirection#Refresh_Meta_tag_and_HTTP_refresh_header^0|E|2D|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Wikipedia explains it pretty well: <a href="http://en.wikipedia.org/wiki/URL_redirection#Refresh_Meta_tag_and_HTTP_refresh_header" rel="nofollow">http://en.wikipedia.org/wiki/URL_redirection#Refresh_Meta_tag_and_HTTP_refresh_header</a>

blocks|key|4636398|text|这是一个旧的HTTP标头值，它已经成为某种“约定的标准”。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4636399|请参阅：'Refresh'+HTTP+header|offset|length|4636400|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/283752/refresh-http-header^0|0|4|L|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

This is an old HTTP header value which has become something of a "standard by convention." 

See: <a href="https://stackoverflow.com/questions/283752/refresh-http-header">&#39;Refresh&#39; HTTP header</a>

blocks|key|3021159|text|response.setIntHeader("refresh",+5);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|3021160|它为您提供了5秒后刷新页面的功能。|unstyled|3021161|并且还使用元刷新标签来实现这一功能。|3021162|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|L|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|F|7|N|8|@]|9|@]|A|$]]]|J|$]]

<pre><code>response.setIntHeader("refresh", 5);
</code></pre>

it gives you the functionality to refresh the page after 5 second.

and also meta refresh tag to use achieve this functionality.

blocks|key|743298|text|setHeader()是Servlet响应对象设置HTTP响应头的方法。刷新是我们使用response.setHeader(“...so”，“5”)的HTTP响应头刷新；它会每隔5秒自动刷新一次页面。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|743299|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

setHeader() is method of Servlet response object to set HTTP response header. 
refresh is HTTP response header ...so we use response.setHeader("refresh","5");
it will auto refresh the page at interval of 5 second..

I am not quite sure of the significance of the following piece of code. It seems that it might cause the page to refresh automatically at some given interval. However, this is just a guess. How is this "Refresh" parameter used? Any other explanation is appreciated. I have done some googling/looked at documentation to no avail.

<pre><code>// I have some instance of HttpServletRepsonse named response
response.setHeader("Refresh","300");
</code></pre>

What is the meaning of response.setHeader("Refresh", "300")?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

我不太确定下面这段代码的意义。它可能会导致页面以给定的时间间隔自动刷新。然而，这只是一种猜测。这个“刷新”参数是如何使用的？任何其他解释都是值得感谢的。我做了一些谷歌搜索/查看文档，但都无济于事。// I have some instance of HttpServletRepsonse named responseresponse.setHeader("Refresh","300");

问Response.setHeader(“刷新”，"300")的含义是什么？
EN

回答 7

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问Response.setHeader(“刷新”，"300")的含义是什么？EN

回答 7

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问Response.setHeader(“刷新”，"300")的含义是什么？
EN