在Go的http包中，如何在POST请求中获取查询字符串？ [英] In Go's http package, how do I get the query string on a POST request?

问题描述

我使用Go的 http 包来处理POST请求。我如何从 Request 对象访问和分析查询字符串的内容？我无法从官方文档中找到答案。

I'm using the httppackage from Go to deal with POST request. How can I access and parse the content of the query string from the Requestobject ? I can't find the answer from the official documentation.

推荐答案

QueryString是，按定义，在URL中。您可以使用 req.URL （ DOC ）。 URL对象有一个 Query（）方法（值类型，它只是一个 map [string] [] string QueryString参数。

A QueryString is, by definition, in the URL. You can access the URL of the request using req.URL (doc). The URL object has a Query() method (doc) that returns a Values type, which is simply a map[string][]string of the QueryString parameters.

如果您要查找的是POST数据由HTML表单提交，那么这通常是请求主体中的键值对。你在答案中是正确的，你可以调用 ParseForm（），然后使用 req.Form 字段来获取键值对的映射，但您也可以调用 FormValue（key）来获取特定键的值。如果需要，这将调用 ParseForm（），并且无论它们是如何被发送的（即在查询字符串中或在请求体中），都会获取值。

If what you're looking for is the POST data as submitted by an HTML form, then this is (usually) a key-value pair in the request body. You're correct in your answer that you can call ParseForm() and then use req.Form field to get the map of key-value pairs, but you can also call FormValue(key) to get the value of a specific key. This calls ParseForm() if required, and gets values regardless of how they were sent (i.e. in query string or in the request body).

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