在Go中添加默认HTTP标头

package main

import (
	"net/http"
)

type DefaultHeaderTransport struct {
	Transport http.RoundTripper
}

func (t *DefaultHeaderTransport) RoundTrip(req *http.Request) (*http.Response, error) {
	// 添加默认的HTTP标头
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Authorization", "Bearer your_token")

	// 使用默认的Transport发送请求
	if t.Transport == nil {
		t.Transport = http.DefaultTransport
	}
	return t.Transport.RoundTrip(req)
}

func main() {
	client := &http.Client{
		Transport: &DefaultHeaderTransport{},
	}

	// 创建一个GET请求
	req, err := http.NewRequest("GET", "https://example.com", nil)
	if err != nil {
		panic(err)
	}

	// 发送请求
	resp, err := client.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	// 处理响应
	// ...
}