2021.6.29解决来源：
https://studygolang.com/articles/9194
添加http或https即可。
代码如下
package main
import (
"fmt"
"io/ioutil"
"net/http"
"os"
)
func main() {
for _, url := range os.Args[1:] {
resp, err := http.Get(url)
if err != nil {
fmt.Fprintf(os.Stderr, "fetch:%v\n", err)
os.Exit(1)
}
b, err := ioutil.ReadAll(resp.Body)
resp.Body.Close()
if err != nil {
fmt.Fprintf(os.Stderr, "fetch:reading %s: %v\n", url, err)
os.Exit(1)
}
fmt.Printf("%s", b)
}
}
正确运行代码
go run 01.go https://www.baidu.com
