mirror of
https://github.com/gopl-zh/gopl-zh.github.com.git
synced 2024-12-27 07:16:22 +00:00
35 lines
619 B
Go
35 lines
619 B
Go
// Copyright © 2016 Alan A. A. Donovan & Brian W. Kernighan.
|
|
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
|
|
|
|
// See page 16.
|
|
//!+
|
|
|
|
// Fetch prints the content found at each specified URL.
|
|
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)
|
|
}
|
|
}
|
|
|
|
//!-
|