java实现下载自定义的excel模板

您好！对于您的问题，我可以告诉您，Java可以通过简单的HTTP请求来下载Excel模板。具体可以参考以下代码：

try {
    URL url = new URL("http://example.com/template.xlsx");
    HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
    int responseCode = httpURLConnection.getResponseCode();

    if (responseCode == HttpURLConnection.HTTP_OK) {
        InputStream inputStream = httpURLConnection.getInputStream();
        FileOutputStream outputStream = new FileOutputStream("template.xlsx");
        byte[] buffer = new byte[4096];
        int bytesRead = -1;

        while ((bytesRead = inputStream.read(buffer)) != -1) {
            outputStream.write(buffer, 0, bytesRead);
        }

        outputStream.close();
        inputStream.close();
    } else {
        System.out.println("文件下载失败");
    }
} catch (IOException e) {
    e.printStackTrace();
}

希望能对您有所帮助！