golang hello.go

Posted 2021-05-24

#!/bin/bash

echo Stop Apache2

sudo service apache2 stop

echo Format Source Code...
go fmt hello.go
echo Build go package
go build hello.go
echo run go server
sudo ./hello

package main

import (
	"fmt"
	"log"
	"net/http"
)

func helloworld(w http.ResponseWriter, r *http.Request) {
	fmt.Fprintf(w, "Hello Go World!")
}

func main() {
    port := 80
	fmt.Println("Start Listen port ", port)
	http.HandleFunc("/", helloworld)
	err := http.ListenAndServe(fmt.Sprintf(":%d", port), nil)
	if err != nil {
		log.Fatal("Error in ListenAndServe: ", err)
	}
}

Hello Go

开始学golang

上手文档http://docs.studygolang.com/doc/install

系统：windows10 64bit

从文档上抄一段代码，保存为hello.go

// You can edit this code!
// Click here and start typing.
package main

import "fmt"

func main() {
　　fmt.Println("Hello, World")
}

运行命令：

go run hello.go

运行结果：

Hello, World

以上。