go语言post请求遭遇403反爬解决tls/ja3指纹或Cloudflare防护

一、解决办法

使用tls-client库，请求示例如下：

package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"io"
	"time"

	http "github.com/bogdanfinn/fhttp"
	tls_client "github.com/bogdanfinn/tls-client"
	"github.com/bogdanfinn/tls-client/profiles"
)

func main() {
	url := "https://xxxxx.com/abc/ddd"

	// 构造 JSON body
	data := map[string]interface{}{
		"aa":     map[string]interface{}{},
		"bb":       map[string]interface{}{"we": 30, "ty": 0},
		"aaaa": "",
	}
	jsonBytes, _ := json.Marshal(data)

	// 创建 tls-client
	client, err := tls_client.NewHttpClient(
		tls_client.NewNoopLogger(),
		tls_client.WithTimeoutSeconds(25),
		tls_client.WithClientProfile(profiles.Okhttp4Android11),
		tls_client.WithProxyUrl("http://127.0.0.1:7890"), // 代理按需保留
	)
	if err != nil {
		panic(err)
	}

	// 创建请求
	req, err := http.NewRequest("POST", url, bytes.NewReader(jsonBytes))
	if err != nil {
		panic(err)
	}

	// 设置必要头（保持简洁，便于排查）
	req.Header = http.Header{}
	req.Header.Add("Content-Type", "application/json; charset=utf-8")


	start := time.Now()
	resp, err := client.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()
	b, _ := io.ReadAll(resp.Body)
	fmt.Println("状态码:", resp.StatusCode)
	fmt.Println("耗时:", time.Since(start))
	fmt.Println("响应头:", resp.Header)
	fmt.Println("响应体:", string(b))
}