在Go中执行HTTP请求时出现乱码

I met a Garbled string question when do Get request in Go, the code is:

req , err:= http.NewRequest(httpMethod, url,strings.NewReader(""))
req.Header.Add("Accept","application/json")
resp, err := http.DefaultClient.Do(req)
body,err := ioutil.ReadAll(resp.Body)
ret := string(body)
log.Warningf("ret: %+v", ret)

if the ret contains only english, it's correct, if contains Chinese, it has garbled string, how to solve this problem, thanks all!

Go strings can hold any type of characters, but when printing them the chars are interpreted as utf-8.

You can try adding:

req.Header.Add("Accept-Charset","utf-8")

If that does not work, you can try using this package to convert from whatever charset it is to utf-8:

https://godoc.org/golang.org/x/text/encoding

The charset depends on the page you are requesting. If it is html, the charset is sometimes specified like this in the response headers:

Content-Type: text/html; charset=utf-8

So you need to figure out what the charset is.

In my case website did not respond with the charset within a Content-Type and did not replied with requested: req.Header.Add("Accept-Charset", "utf-8")

I opended up file in Visual Studio Code and have been switching encoding to find out which one works best "Reopen With Encoding".

Once i figured out which encoding it was i simply used function:

dec := charmap.Windows1250.NewDecoder()
output, _ := dec.Bytes(body)

from: "golang.org/x/text/encoding/charmap"

Full code example:

package main

import (
    "fmt"
    "net/http"
    "io/ioutil"
    "golang.org/x/text/encoding/charmap"
)

func main() {

    client := &http.Client{}

    req, err := http.NewRequest("GET", "example.com", nil)

    if err != nil {
        fmt.Println(err)
        return
    }

    resp, err := client.Do(req)

    if err != nil {
        fmt.Println(err)
        return
    }

    defer resp.Body.Close()

    body, err := ioutil.ReadAll(resp.Body)

    if err != nil {
        fmt.Println(err)
        return
    }

    dec := charmap.Windows1250.NewDecoder()

    output, err:= dec.Bytes(body)

    if err != nil {
        fmt.Println(err)
        return
    }

    // do something with output

}