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server.go
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server.go
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package main
import (
"fmt" //print useful data
"log" //print fatal errors
"net/http" //functionality for creating HTTP client/server
)
func main() {
fileServer := http.FileServer(http.Dir("./static"))
http.Handle("/", fileServer)
http.HandleFunc("/form", formHandler)
//HandleFunc add route handlers to the web server
//second argument accepts a function that holds the business logic to correctly respond to the request.
//this function accepts a ResponseWriter to send a response back and a Request object that provides more information about the request itself
http.HandleFunc("/hello", helloHandler)
fmt.Printf("Starting server at port 8080\n")
//ListenAndServe allows us to start the web server and specify the port to listen for incoming requests
//port parameter needs to be passed as a string prepended by colon punctuation.
//second parameter accepts a handler to configure the server for HTTP/2.
if err := http.ListenAndServe(":8080", nil); err != nil {
log.Fatal(err)
}
}
func helloHandler(w http.ResponseWriter, r *http.Request) {
if r.URL.Path != "/hello" {
http.Error(w, "404 not found.", http.StatusNotFound)
return
}
if r.Method != "GET" {
http.Error(w, "Method is not supported.", http.StatusNotFound)
return
}
fmt.Fprintf(w, "Hello!")
}
func formHandler(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
fmt.Fprintf(w, "ParseForm() err: %v", err)
return
}
fmt.Fprintf(w, "POST request successful")
name := r.FormValue("name")
address := r.FormValue("address")
fmt.Fprintf(w, "Name = %s\n", name)
fmt.Fprintf(w, "Address = %s\n", address)
}