从web下载图片的代码中获取禁止错误

async function downloadImage(url) {
    try {
        const response = await fetch(url);
        
        if (!response.ok) {
            if (response.status === 403) {
                throw new Error('禁止访问：服务器拒绝了请求');
            } else {
                throw new Error(`HTTP错误！状态码: ${response.status}`);
            }
        }

        const blob = await response.blob();
        const link = document.createElement('a');
        link.href = URL.createObjectURL(blob);
        link.download = 'image.jpg';
        document.body.appendChild(link);
        link.click();
        document.body.removeChild(link);
    } catch (error) {
        console.error('下载图片时出错:', error.message);
    }
}

// 使用示例
downloadImage('https://example.com/image.jpg');