How to handle MIME-encoded HTTP requests (e.g., POST requests with JSON data) in Go?

To handle MIME-encoded HTTP requests with JSON data in Go, you can use the net/http package along with the encoding/json package for JSON decoding. Here's an example of how you can handle MIME-encoded POST requests with JSON data in Go.

First, define a struct that represents your JSON data. For example:

type User struct {
    Name string `json:"name"`
    Age  int    `json:"age"`
}

Then, create an HTTP handler function to handle the requests:

func handlePostRequest(w http.ResponseWriter, r *http.Request) {
    if r.Method != http.MethodPost {
        http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
        return
    }

    // Set the content type header to JSON
    w.Header().Set("Content-Type", "application/json")

    // Decode the JSON data from the request body into the struct
    var user User
    err := json.NewDecoder(r.Body).Decode(&user)
    if err != nil {
        http.Error(w, "Bad request", http.StatusBadRequest)
        return
    }

    // Do something with the user data
    // ...

    // Send a JSON response
    json.NewEncoder(w).Encode(user)
}

In your main function, create an HTTP server and register the handler:

func main() {
    http.HandleFunc("/user", handlePostRequest)
    http.ListenAndServe(":8080", nil)
}

Now, when you send a POST request to /user with the appropriate JSON data, the server will decode the JSON and you can handle the data as desired.