The Swagger documentation success response shows {data=string} but doesn't specify what happens on failure scenarios. Consider documenting common failure cases such as:

• Invalid URL format
• Network timeout
• Website not accessible
• No title tag found

Example improvement:

// @Success 200 {object} res.Response{data=string} "获取网站标题成功"
// @Failure 400 {object} res.Response "无效的请求参数"
// @Failure 500 {object} res.Response "获取网站标题失败"

The error message is empty when the service call fails. This makes debugging difficult for users and developers. Consider providing a more descriptive error message.

Change:

return res.Response{
    Msg: "获取网站标题失败",
    Err: err,
}

The TrimURL function removes the protocol prefix (http:// or https://) from the URL, which will cause the HTTP request to fail. The SendRequest function on line 766 expects a fully qualified URL with protocol.

The TrimURL function is typically used for cleaning URLs for storage or display, not for making HTTP requests. You should validate and normalize the URL without removing the protocol:

// Ensure URL has a protocol
if !strings.HasPrefix(websiteURL, "http://") && !strings.HasPrefix(websiteURL, "https://") {
    websiteURL = "https://" + websiteURL
}
websiteURL = strings.TrimSpace(websiteURL)

The function lacks URL validation and could be exploited for Server-Side Request Forgery (SSRF) attacks. An attacker could use this endpoint to make requests to internal services, localhost, or private networks.

Consider adding URL validation to:

1. Reject private IP addresses (127.0.0.0/8, 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16)
2. Reject localhost/internal hostnames
3. Whitelist only http/https protocols
4. Add a timeout for the HTTP request (already exists in SendRequest)
5. Validate the URL format before making the request

Example validation:

func (commonService *CommonService) GetWebsiteTitle(websiteURL string) (string, error) {
    // Validate URL format
    parsedURL, err := url.Parse(websiteURL)
    if err != nil {
        return "", fmt.Errorf("invalid URL format: %w", err)
    }
    
    // Only allow http and https
    if parsedURL.Scheme != "http" && parsedURL.Scheme != "https" {
        return "", errors.New("only http and https protocols are allowed")
    }
    
    // Check for private IPs and localhost
    if err := validateHost(parsedURL.Host); err != nil {
        return "", err
    }
    
    // ... rest of the implementation
}

The HTML parsing could fail for non-UTF8 encoded pages or large responses. Consider adding:

1. Content-Type/charset detection and handling
2. A size limit on the response body to prevent memory issues
3. Better error messages to distinguish between parsing errors and network errors

Example improvement:

// Limit response size to prevent memory issues
const maxBodySize = 1 * 1024 * 1024 // 1MB
if len(body) > maxBodySize {
    body = body[:maxBodySize]
}

// Attempt to detect and handle charset encoding
// (Consider using golang.org/x/text/encoding for charset conversion)

doc, err := html.Parse(strings.NewReader(string(body)))
if err != nil {
    return "", fmt.Errorf("failed to parse HTML: %w", err)
}

Consider adding URL validation before making the API request to provide immediate feedback to users. This would prevent unnecessary API calls for obviously invalid URLs and improve user experience.

Example:

const handleFetchWebsiteTitle = async () => {
  const websiteURL = (editorStore.websiteToAdd.site || '').trim()
  if (!websiteURL) {
    theToast.warning('请先输入网站链接')
    return
  }
  
  // Basic URL validation
  try {
    new URL(websiteURL)
  } catch {
    theToast.warning('请输入有效的网站链接')
    return
  }
  
  // ... rest of the implementation
}