// 前端AJAX请求示例(使用jQuery)
$.ajax({
    url: '/api/data',
    type: 'GET',
    headers: {
        'X-Requested-With': 'XMLHttpRequest'
    },
    success: function(response) {
        // 处理响应
    }
});

app.get('/api/data', (req, res) => {
    // 检查是否为AJAX请求
    if (!req.xhr && !req.headers['x-requested-with']) {
        // 返回406状态码
        return res.status(406).json({
            error: 'This endpoint only accepts AJAX requests'
        });
    }
    
    // 正常处理AJAX请求
    res.json({ data: 'Your AJAX data here' });
});

if (empty($_SERVER['HTTP_X_REQUESTED_WITH']) || strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) != 'xmlhttprequest') {
    http_response_code(406);
    exit('This endpoint only accepts AJAX requests');
}

from flask import request, jsonify

@app.route('/api/data')
def get_data():
    if not request.headers.get('X-Requested-With') == 'XMLHttpRequest':
        return jsonify({'error': 'AJAX requests only'}), 406
    return jsonify({'data': 'Your data here'})