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).