How to build a website in golang

server.go
package main
import (
    "fmt"
    "net/http"
    "strings"
    "log"
)
func sayhelloName(w http.ResponseWriter, r *http.Request) {
        r.ParseForm() //解析参数，默认是不会解析的
        fmt.Println(r.Form) //这些信息是输出到服务器端的打印信息
        fmt.Println("path", r.URL.Path)
        fmt.Println("scheme", r.URL.Scheme)
        fmt.Println(r.Form["url_long"])
        for k, v := range r.Form {
            fmt.Println("key:", k)
            fmt.Println("val:", strings.Join(v, ""))
        }
        fmt.Fprintf(w, "Hello go web server") //这个写入到w的是输出到客户端的
}
func main() {
        http.HandleFunc("/", sayhelloName) //设置访问的路由
        err := http.ListenAndServe(":9090", nil) //设置监听的端口
        if err != nil {
        log.Fatal("ListenAndServe: ", err)
    }
}

go build server.go

./server