Golang 发送http请求时设置header的实现

package main
import (
  "fmt"
  "io/ioutil"
  "net/http"                                                                           
  "os"
  "encoding/json"
)

func main() { //生成client 参数为默认
  client := &http.Client{}
  //生成要访问的url
  url := "http://somesite/somepath/"
  //提交请求
  reqest, err := http.NewRequest("GET", url, nil)

  //增加header选项
  reqest.Header.Add("Cookie", "xxxxxx")
  reqest.Header.Add("User-Agent", "xxx")
  reqest.Header.Add("X-Requested-With", "xxxx")

  if err != nil {
    panic(err)
  }  
  //处理返回结果
  response, _ := client.Do(reqest)
  defer response.Body.Close()