英文:
Set UserAgent in http request
问题
我正在尝试让我的Go应用程序指定自己作为特定的“UserAgent”，但是在net/http中找不到任何关于如何做到这一点的信息。我正在创建一个http.Client，并使用它通过client.Get()进行Get请求。
是否有一种方法可以在Client中设置UserAgent，或者根本不行？
英文:
I'm trying to make my Go application specify itself as a specific UserAgent, but can't find anything on how to go about doing this with net/http. I'm creating an http.Client, and using it to make Get requests, via client.Get().
Is there a way to set the UserAgent in the Client, or at all?
答案1
得分: 124
当创建请求时，请使用request.Header.Set("key", "value")：
package mainimport ("io""log""net/http")func main() {client := &http.Client{}req, err := http.NewRequest("GET", "http://httpbin.org/user-agent", nil)if err != nil {log.Fatalln(err)}req.Header.Set("User-Agent", "Golang_Spider_Bot/3.0")resp, err := client.Do(req)if err != nil {log.Fatalln(err)}defer resp.Body.Close()body, err := io.ReadAll(resp.Body)if err != nil {log.Fatalln(err)}log.Println(string(body))}
结果:
2012/11/07 15:05:47 {"user-agent": "Golang_Spider_Bot/3.0"}
附注：http://httpbin.org非常适合测试这种类型的事情！
英文:
When creating your request use request.Header.Set("key", "value"):
package mainimport ("io""log""net/http")func main() {client := &http.Client{}req, err := http.NewRequest("GET", "http://httpbin.org/user-agent", nil)if err != nil {log.Fatalln(err)}req.Header.Set("User-Agent", "Golang_Spider_Bot/3.0")resp, err := client.Do(req)if err != nil {log.Fatalln(err)}defer resp.Body.Close()body, err := io.ReadAll(resp.Body)if err != nil {log.Fatalln(err)}log.Println(string(body))}
Result:
2012/11/07 15:05:47 {"user-agent": "Golang_Spider_Bot/3.0"}
P.S. http://httpbin.org is amazing for testing this kind of thing!
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