写的第一个程序很简单，但是意义非凡。通过http将网页抓取，保存到本地。程序如下
package main
import (
"fmt"
"os"
"log"
"net/http"
)
func main(){
resp,err := http.Get("http://www.baidu.com")
if err != nil{
//handle error
fmt.Println(err)
log.Fatal(err)
}
if resp.StatusCode == http.StatusOK{
fmt.Println(resp.StatusCode)
}
defer resp.Body.Close()
buf := make([]byte,1024)
//create file
f,err1 := os.OpenFile("baidu.html",os.O_RDWR|os.O_CREATE|os.O_APPEND,os.ModePerm)
if err1 != nil{
panic(err1)
return
}
defer f.Close()
for {
n,_ := resp.Body.Read(buf)
if 0 == n {break}
f.WriteString(string(buf[:n]))
}
}
