用Selenium WebDriver和Java实现从图像中读取文本（captcha）

Question

我有注册网页，但在最后验证码显示…

我无法从图像中读取文本。我将提到代码和输出…

@Test
public void loginTest() throws InterruptedException {
    System.out.println("Testing");
    driver.get("https://customer.onlinelic.in/ForgotPwd.htm");

    WebElement element = driver.findElement(By.xpath("//*[@id='forgotPassword']/table/tbody/tr[5]/td[3]/img"));
    System.out.println(" get the instance ");

    String elementTest = element.getAttribute("src");
    System.out.println("Element : " + elementTest);
}

输出：错误

Answer 1

为了说明前面的答案，CAPTCHA是“完全自动化的公共图灵测试来区分计算机和人类”的首字母缩写。所以，如果“机器”能解决它，那就不是真的做它的工作了。

为了解决它，您可以做一些事情--使用外部服务的API，如http://www.deathbycaptcha.com。您实现他们的API，将验证码传递给他们，然后返回文本。我观察到的平均解决时间大约是10-15秒。

实现示例（取自此处）

import com.DeathByCaptcha.AccessDeniedException;
import com.DeathByCaptcha.Captcha;
import com.DeathByCaptcha.Client;
import com.DeathByCaptcha.SocketClient;
import com.DeathByCaptcha.HttpClient;

/* Put your DeathByCaptcha account username and password here.
   Use HttpClient for HTTP API. */
Client client = (Client)new SocketClient(username, password);
try {
    double balance = client.getBalance();

    /* Put your CAPTCHA file name, or file object, or arbitrary input stream,
       or an array of bytes, and optional solving timeout (in seconds) here: */
    Captcha captcha = client.decode(captchaFileName, timeout);
    if (null != captcha) {
        /* The CAPTCHA was solved; captcha.id property holds its numeric ID,
           and captcha.text holds its text. */
        System.out.println("CAPTCHA " + captcha.id + " solved: " + captcha.text);

        if (/* check if the CAPTCHA was incorrectly solved */) {
            client.report(captcha);
        }
    }
} catch (AccessDeniedException e) {
    /* Access to DBC API denied, check your credentials and/or balance */
}