英文:
how to get the redirect url instead of page content in golang?
问题
我正在发送一个请求到服务器，但是它返回的是一个网页。有没有办法获取网页的URL呢？
package main
import (
"fmt"
"io/ioutil"
"net/http"
)
func main() {
req, err := http.NewRequest("GET", "https://www.google.com", nil)
if err != nil {
panic(err)
}
client := new(http.Client)
response, err := client.Do(req)
if err != nil {
panic(err)
}
fmt.Println(ioutil.ReadAll(response.Body))
}
我是你的中文翻译，以上是你要翻译的内容。
英文:
I am sending a request to server but it is returning a web page. Is there a way to get the url of the web page instead?
package main
import (
"fmt"
"io/ioutil"
"net/http"
)
func main() {
req, err := http.NewRequest("GET", "https://www.google.com", nil)
if err != nil {
panic(err)
}
client := new(http.Client)
response, err := client.Do(req)
if err != nil {
panic(err)
}
fmt.Println(ioutil.ReadAll(response.Body))
}
答案1
得分: 25
你需要检查重定向并停止（捕获）它们。如果捕获到重定向，你可以使用响应结构的location方法获取重定向的URL（重定向到哪个URL）。
package main
import (
"errors"
"fmt"
"net/http"
)
func main() {
req, err := http.NewRequest("GET", "https://www.google.com", nil)
if err != nil {
panic(err)
}
client := new(http.Client)
client.CheckRedirect = func(req *http.Request, via []*http.Request) error {
return errors.New("Redirect")
}
response, err := client.Do(req)
if err == nil {
if response.StatusCode == http.StatusFound { //status code 302
fmt.Println(response.Location())
}
} else {
panic(err)
}
}
希望对你有帮助！
英文:
You need to check for redirect and stop(capture) them. If you capture a redirection then you can get the redirect URL (to which redirection was happening) using location method of response struct.
package main
import (
"errors"
"fmt"
"net/http"
)
func main() {
req, err := http.NewRequest("GET", "https://www.google.com", nil)
if err != nil {
panic(err)
}
client := new(http.Client)
client.CheckRedirect = func(req *http.Request, via []*http.Request) error {
return errors.New("Redirect")
}
response, err := client.Do(req)
if err == nil {
if response.StatusCode == http.StatusFound { //status code 302
fmt.Println(response.Location())
}
} else {
panic(err)
}
}
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