使用 CaptchaAI 解决西里尔文字验证码

验证码写着“ШКАФ”，你一字不差照抄，系统却报“验证码错误”——问题不在看错字母，而在西里尔字母里有一批和拉丁字母“长得一样、编码不同”的字符，如西里尔 А（U+0410）与拉丁 A（U+0041）。俄语、乌克兰语、保加利亚语、塞尔维亚语网站验证码常踩这个坑。

CaptchaAI 图片 OCR 求解器的 language=2 参数专门识别非拉丁字符集，返回正确的西里尔 Unicode 代码点。

排查同形字报错：先比对代码点，别靠肉眼重新确认字母。

容易看错的西里尔与拉丁字母对照表

代码实战：Python 与 Node.js 双语言示例

Python：识别西里尔文图片验证码

import requests
import base64
import time

API_KEY = "YOUR_API_KEY"
SUBMIT_URL = "https://ocr.captchaai.com/in.php"
RESULT_URL = "https://ocr.captchaai.com/res.php"


def solve_cyrillic_captcha(image_path: str) -> str:
    """Solve a Cyrillic text image CAPTCHA."""
    with open(image_path, "rb") as f:
        image_b64 = base64.b64encode(f.read()).decode()

    resp = requests.post(SUBMIT_URL, data={
        "key": API_KEY,
        "method": "base64",
        "body": image_b64,
        "language": 2,          # Non-Latin character support
        "json": 1,
    }, timeout=30).json()

    if resp.get("status") != 1:
        raise RuntimeError(f"Submit: {resp.get('request')}")

    task_id = resp["request"]
    for _ in range(24):
        time.sleep(5)
        poll = requests.get(RESULT_URL, params={
            "key": API_KEY, "action": "get", "id": task_id, "json": 1,
        }, timeout=15).json()

        if poll.get("request") == "CAPCHA_NOT_READY":
            continue
        if poll.get("status") == 1:
            return poll["request"]
        raise RuntimeError(f"Solve: {poll.get('request')}")

    raise RuntimeError("Timeout")


def solve_cyrillic_from_session(session: requests.Session,
                                 captcha_url: str) -> str:
    """Solve a Cyrillic CAPTCHA within a session context."""
    resp = session.get(captcha_url, timeout=15)
    image_b64 = base64.b64encode(resp.content).decode()

    submit = requests.post(SUBMIT_URL, data={
        "key": API_KEY,
        "method": "base64",
        "body": image_b64,
        "language": 2,
        "json": 1,
    }, timeout=30).json()

    if submit.get("status") != 1:
        raise RuntimeError(f"Submit: {submit.get('request')}")

    task_id = submit["request"]
    for _ in range(24):
        time.sleep(5)
        poll = requests.get(RESULT_URL, params={
            "key": API_KEY, "action": "get", "id": task_id, "json": 1,
        }, timeout=15).json()

        if poll.get("request") == "CAPCHA_NOT_READY":
            continue
        if poll.get("status") == 1:
            return poll["request"]
        raise RuntimeError(f"Solve: {poll.get('request')}")

    raise RuntimeError("Timeout")


def verify_cyrillic(text: str) -> bool:
    """Verify that solved text contains Cyrillic characters."""
    return any('\u0400' <= ch <= '\u04FF' for ch in text)


# --- Russian website form flow ---

def solve_russian_form(form_url: str, captcha_url: str,
                       form_data: dict) -> requests.Response:
    """Complete a Russian website form with CAPTCHA."""
    session = requests.Session()
    session.headers.update({
        "Accept-Language": "ru-RU,ru;q=0.9",
    })

    # Establish session
    session.get(form_url, timeout=15)

    # Solve CAPTCHA
    captcha_text = solve_cyrillic_from_session(session, captcha_url)
    print(f"Cyrillic CAPTCHA: {captcha_text}")

    if verify_cyrillic(captcha_text):
        print("Confirmed: contains Cyrillic characters")

    form_data["captcha"] = captcha_text
    return session.post(form_url, data=form_data, timeout=30)


# --- Usage ---

text = solve_cyrillic_captcha("russian_captcha.png")
print(f"Solved: {text}")
print(f"Is Cyrillic: {verify_cyrillic(text)}")
print(f"Unicode codepoints: {[hex(ord(c)) for c in text]}")

language=2 切到西里尔感知模型；verify_cyrillic() 校验结果是否落在 U+0400–U+04FF。

Node.js：处理俄语网站的验证码

const API_KEY = "YOUR_API_KEY";
const SUBMIT_URL = "https://ocr.captchaai.com/in.php";
const RESULT_URL = "https://ocr.captchaai.com/res.php";
const fs = require("fs");

async function solveCyrillicCaptcha(imagePath) {
  const imageB64 = fs.readFileSync(imagePath, "base64");

  const body = new URLSearchParams({
    key: API_KEY,
    method: "base64",
    body: imageB64,
    language: "2",
    json: "1",
  });

  const resp = await (await fetch(SUBMIT_URL, { method: "POST", body })).json();
  if (resp.status !== 1) throw new Error(`Submit: ${resp.request}`);

  const taskId = resp.request;
  for (let i = 0; i < 24; i++) {
    await new Promise((r) => setTimeout(r, 5000));
    const url = `${RESULT_URL}?key=${API_KEY}&action=get&id=${taskId}&json=1`;
    const poll = await (await fetch(url)).json();
    if (poll.request === "CAPCHA_NOT_READY") continue;
    if (poll.status === 1) return poll.request;
    throw new Error(`Solve: ${poll.request}`);
  }
  throw new Error("Timeout");
}

function isCyrillic(text) {
  return /[\u0400-\u04FF]/.test(text);
}

function showCodepoints(text) {
  return [...text].map((ch) => `${ch}=U+${ch.codePointAt(0).toString(16).padStart(4, "0")}`);
}

// Usage
const text = await solveCyrillicCaptcha("russian_captcha.png");
console.log(`Solved: ${text}`);
console.log(`Is Cyrillic: ${isCyrillic(text)}`);
console.log(`Codepoints: ${showCodepoints(text).join(", ")}`);

逻辑同 Python：带上 language: "2"，每 5 秒轮询一次，用正则确认结果。

常见西里尔验证码文本类型

跨境选品团队怎么踩坑：Ozon、Wildberries 场景

做 Ozon、Wildberries 跨境选品或比价的团队几乎每天都会碰到上表这几种类型：

• 商品详情页登录墙：纯西里尔单词验证码
• 比价工具批量请求：中西混排验证码更常见

带上 language=2 后，这两类基本不受影响。

常见报错与处理方式

常见问题

CaptchaAI 支持哪些西里尔语言的验证码？

不止俄语，language=2 也覆盖乌克兰语、保加利亚语、塞尔维亚语，含 ґ、є、і、ї。

明明照着输入了，表单为什么还是报错？

大概率是同形字：重打的字母外观一样，代码点不同。直接提交返回的 token，别手动重打。

language=2 必须传吗？

必须，否则字符大概率被当成拉丁字母误判。

识别成功了，打印出来却是乱码？

本地编码问题，检查输出环境是否统一 UTF-8，Python 里设置 response.encoding = 'utf-8' 即可。

西里尔和拉丁字母混排会影响识别准确率吗？

不会，CaptchaAI 会为每个字符返回正确代码点，用 verify_cyrillic() 校验即可。

立即开始处理西里尔验证码

西里尔验证码靠人工核对代码点很难保证一致，用 language=2 对接更稳定——获取 CaptchaAI API 密钥即可开始测试。

相关指南：

• 中文网站验证码识别方案
• 多语言图片验证码字符集详解
• 验证码本地化与语言参数设置