使用Redux表单实现不可见的reCAPTCHA-Java 学习之路

我正在尝试使用React和Redux Form实现Invisible reCAPTCHA . 通常，Invisible reCAPTCHA工作流程是：

渲染"invisible" CAPTCHA，返回其小部件ID .
使用小部件的ID调用 grecaptcha.execute . 如有必要，将提示用户解决挑战 . 结果将传递给呈现CAPTCHA时指定的回调函数 .
提交表格和CAPTCHA结果 .

我've created a React component intended to be used with Redux Form' s Field 在调用 grecaptcha.execute 之后呈现CAPTCHA并更新表单状态：

class ReCaptcha extends React.Component {
  render() {
    return <div ref={div => this.container=div} />
  }

  componentDidMount() {
    const { input: { onChange }, sitekey } = this.props
    grecaptcha.render(this.container, {
      sitekey,
      size: "invisible",
      callback: onChange
    })
  }
}

但是，我不知道在用户提交表单时如何或在何处将 grecaptcha.execute 与窗口小部件ID一起调用 . 我无法在 onSubmit 中调用它，因为那里无法访问窗口小部件ID . 我可以在渲染CAPTCHA之后立即在 ReCaptcha 中调用它，但是如果用户需要解决CAPTCHA，则在表单呈现后会立即提示他这样做 .

这个minimal working example显示了我迄今取得的成就 .

3 回答

使用onSubmit prop调用grecaptcha.execute（），并将数据回调指向'real'onSubmit函数 .

let refToMyWidget;
const { handleSubmit } = this.props;

componentDidMount() {
  if (window.grecaptcha) {
    refToMyWidget = window.grecaptcha.render(this.container, {
      sitekey: "xxxx",
      size: "invisible",
      callback: handleSubmit(this.actuallySubmit)
    })
  }
}

preSubmit() {
  if(!window.grecaptcha) {
    return;
  }
  window.grecaptcha.execute(this.refToMyWidget)
}

actuallySubmit() {
  // submission logic here
}

render() {
  return (
    <form onSubmit={handleSubmit(this.preSubmit)}>
        <Field name="foo" component="input" />
        <button>Submit</button>
    </form>
  )
}

注：我没有测试过这段代码，但它应该或多或少是正确的 . 如果您在将grecaptcha加载到页面/表单时遇到问题，我发现this代码非常有用 .

回复于 2024-04-20T22:23:42+08:00

我必须让隐形的reCAPTCHA为我工作，因为可见的reCAPTCHA没有响应 . Here是我实施的例子 .

首先要做的是在身体上添加下面的标签（或者你可以使用react-helmet） .

<script src="https://www.google.com/recaptcha/api.js?onload=onloadCallback&render=explicit" async defer></script>

我工作代码的简化版本：

import React from 'react';

class YourComponent extends React.Component {
  componentDidMount() {
    // Create a script to make sure the reCAPTCHA API is called.
    const script = document.createElement('script');
    script.text = `
      var onloadCallback = function() {
        console.log('grecaptcha is ready');
      };
    `;
    document.body.appendChild(script);

    // We will render reCAPTCHA after the page is loaded,
    // because we want to bind our own submit methods.
    window.addEventListener('load', this.onLoad);
  }

  // Runs once the form is submitted.
  onRecaptcha = (e) => {
    e.preventDefault();
    const { grecaptcha } = window;
    grecaptcha.execute();
  };

  // Real submit function.
  onSubmit = (token) => {
    // I'm not sure what token could be if recaptcha fails.
    // In my case it seems successful and returns a long string.
    console.log(token);

    // Your real action goes below...
  };

  onLoad = () => {
    // Now we define our reCAPTCHA
    if (window.grecaptcha) {
      const { grecaptcha } = window;
      grecaptcha.render('recaptcha', { // div#recaptcha
        sitekey  : '',
        size     : 'invisible',
        callback : this.onSubmit
      });
    }
  };

  render() {
    return (
      <div>
        <Helmet>
          <script
            src="https://www.google.com/recaptcha/api.js?onload=onloadCallback&render=explicit"
            async
            defer
          />
        </Helmet>
        <form onSubmit={this.onRecaptcha}>
          <div id="recaptcha" />
          <button type="submit">Submit</button>
        </form>
      </div>
    );
  }
}

export default YourComponent;

回复于 2024-04-20T22:23:42+08:00

这样你就可以在任何地方实现它

import React, { Component } from "react";

    export default class Test extends Component {

      componentWillMount = () => {
        const script = document.createElement("script");
        script.src = "https://www.google.com/recaptcha/api.js";
        script.async = true;
        script.defer = true;
        document.body.appendChild(script);

        window.addEventListener("load", this.onLoad);
      };

      onLoad = () => {
        if (window.grecaptcha) {
          window.grecaptcha.render("recaptcha", {
            sitekey: "",
            size: "invisible",
            callback: this.onCaptcheCompleted
          });
        }
      };
      onCaptcheCompleted = e => {
        //do what ever you want
        console.log(e);
      };

      render() {
        return (
          <div id="recaptcha">
            <input />
            <button onClick={() => window.grecaptcha.execute()} />
          </div>
        );
      }
    }

回复于 2024-04-20T22:23:42+08:00

使用Redux表单实现不可见的reCAPTCHA

3 回答

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