How Do I Access Query String Parameters in Go's POST Requests?

Accessing Query String Parameters in Go's POST Requests

In Golang's http package, when handling POST requests, accessing the query string can be done by parsing the Request object's query parameters. The Request type provides the Query method, which returns a Values map containing the key-value pairs of the query string.

Example

Consider a POST request with a URL like:

http://host:port/something?param1=b

To access the GET parameters in Go:

func newHandler(w http.ResponseWriter, r *http.Request) {
  fmt.Println("GET params were:", r.URL.Query())

  // Get a single parameter
  param1 := r.URL.Query().Get("param1")

  // Get multiple parameters or empty values
  param1s := r.URL.Query()["param1"]
}

Note:

• Query keys are case-sensitive.
• If multiple values are provided for a single key, they will be returned as a slice in the Values map.

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