AnQiCMS (AnQiCMS) is an enterprise-level system dedicated to providing efficient and customizable content management solutions, naturally considering website security and user experience as well.The comment verification code is an important defense line against spam and malicious flooding.What specific types of captcha does AnQiCMS留言验证码 support, such as pure numbers, pure letters, or a combination of numbers and letters?Let us delve into it together.

What is the working mechanism of AnQiCMS comment captcha?

Understanding how AnQiCMS captcha works is helpful for better understanding its types.AnQiCMS's captcha is not simply embedded with an image; it has a sophisticated interaction mechanism behind it, designed to ensure the validity of the verification and the convenience of integration.

According to the documentation provided by AnQiCMS, the implementation of the留言验证码留言验证码 relies on an API interface/api/captchaWhen the website page needs to display a captcha, the front-end will send a request to this interface via JavaScript. The data returned by the interface includes two key pieces of information: captcha_idandcaptcha.captcha_idIt is the unique identifier for this captcha request, andcaptchathen it is a URL used to display the captcha image.

After the front-end receives this information, it willcaptcha_idStored in a hidden input field, and.captchaSet the image URL to a.<img>TagssrcProperties, thus dynamically displaying captcha images on the page.Users are required to enter the captcha characters they see in the image when leaving a message, in addition to filling in the message content.captcha_idSend it to the server for verification. The server will.captcha_idRetrieve the correctly generated verification code before and compare it with the content entered by the user to determine whether the verification passes.

This design ensures the dynamics and security of the captcha, avoiding the risks that may be brought by simple image direct links, and also allows the captcha to be easily updated without refreshing the entire page.

An in-depth discussion on the types of captcha

What specific types of captcha does AnQiCMS留言 support, such as pure numbers, pure letters, or a combination of numbers and letters?

According to the current review of the AnQiCMS related documents, the system does not explicitly detail the specific character types supported by its留言验证码留言验证码 (such as only numbers, only letters, or a mixed combination).The document mainly focuses on the integration methods of captcha and the details of API calls, rather than the character set of the internal generation logic.

However, from the perspective of technical implementation, AnQiCMS uses an image-based captcha and generates it through a dynamic API interface. This usually means that its captcha design tends to adoptA combination of numbers and uppercase lettersThis mixed character captcha is the current mainstream implementation method, as it finds a good balance between user recognition difficulty and automated recognition difficulty:)

  • Numeric captchaAlthough it is the easiest for users to recognize, the risk of being recognized by machines (OCR technology) is relatively high, and the security is lower.
  • Alphabetic captchaIncreased the difficulty of machine recognition, but if case sensitivity is used, the user may easily make mistakes during input, affecting the user experience.
  • Combination of numbers and uppercase letters as the captchaThis is the most common type of captcha.It combines the characteristics of numbers and letters, effectively enhancing the difficulty of machine recognition by increasing the character types and introducing random combinations of uppercase and lowercase, character distortion, and background interference. At the same time, it can maintain a certain degree of user recognizability if the visual design is appropriate.

Although the specific character set is not detailed in the document, considering that AnQiCMS is positioned as an 'enterprise-level content management system', which emphasizes 'security mechanisms' and 'easy extensibility', its built-in captcha function should choose a secure and practical combination method.If the user has specific customization requirements for the captcha character type, based on the modular design and openness of the Go language, AnQiCMS theoretically will provide the corresponding configuration interface or achieve it through secondary development.

How to enable and integrate the留言验证码in AnQiCMS?

Even though the document does not explicitly state the specific type of captcha, the steps to integrate and enable it are very clear and straightforward. You only need to perform simple configuration and code integration:

  1. Enable captcha function on the backendFirstly, find and enable the captcha function for comments or messages in the AnQiCMS backend management interface.This is usually set in the relevant modules under 'Global Settings' or 'Feature Management'.

  2. Integrate frontend codeIn your HTML template for the message form or comment form, you need to add fields for displaying the captcha image and receiving user input, and work with JavaScript code to dynamically load the captcha.

    <div style="display: flex; clear: both">
  <input type="hidden" name="captcha_id" id="captcha_id">
  <input type="text" name="captcha" required placeholder="请填写验证码" class="layui-input" style="flex: 1">
  <img src="" id="get-captcha" style="width: 150px;height: 56px;cursor: pointer;" alt="验证码" />
  <script>
    document.getElementById('get-captcha').addEventListener("click", function (e) {
      fetch('/api/captcha')
              .then(response => response.json())
              .then(res => {
                document.getElementById('captcha_id').setAttribute("value", res.data.captcha_id);
                document.getElementById('get-captcha').setAttribute("src", res.data.captcha);
              }).catch(err => console.error('获取验证码失败:', err));
    });
    // 页面加载时自动获取一次验证码
    document.getElementById('get-captcha').click();
  </script>
</div>

    If you use jQuery in your project, you can also use a more concise syntax:

    <script>
  $(function() {
    $('#get-captcha').on("click", function () {
      $.get('/api/captcha', function(res) {
        $('#captcha_id').attr("value", res.data.captcha_id);
        $('#get-captcha').attr("src", res.data.captcha);
      }, 'json');
    });
    // 页面加载时自动获取一次验证码
    $('#get-captcha').click();
  });
</script>

After completing these steps, your website's留言功能留言功能has successfully enabled captcha verification, which can effectively resist most robots and spam.

Summary

AnQiCMS's留言验证码provides a simple and effective integrated solution, through dynamic images and API interface interaction, providing the website with basic anti-spam information capabilities.Although the details of all captcha types are not explicitly listed in the document, its design approach conforms to modern CMS security practices, which usually adopt a mixed captcha form of numbers and letters to achieve a balance between security and user experience.For website operators, understanding the working principle and integrating according to the documentation can easily enhance the security of the website.

Common Questions (FAQ)

1. Can I customize the display style or appearance of the AnQiCMS message verification code?Answer: Yes, it can. The captcha image is generated by a<img>The label displays, so you can adjust the appearance properties such as the size, border, and position of the captcha image by modifying the CSS style. For example, in the above code,style="width: 150px;height: 56px;cursor: pointer;"It is directly adjusted through inline styles. For more complex styling needs, you can define classes in a CSS file and then apply them to<img>Label.

2. What should I do if the captcha image does not display?Answer: If the captcha image is not displayed correctly, you can investigate from the following aspects:

  • Check the network requestOpen the browser's developer tools (F12), switch to the "Network" or "网络" tab, and check if there is a request to/api/captchaInitiate the request and check the response status code and response content. If the request fails (e.g., 404 or 500 errors), it may indicate that there is an issue with the backend API.
  • Check JavaScript code: Ensure that your frontend JavaScript code is correct, especiallyfetchor$.getrequests andcaptcha_idandsrcThe setting of properties. You can try to view any error messages in the console.
  • Check the backend configurationConfirm that you have enabled comments or messages in the AnQiCMS admin panel