使用java下载模板文件的示例代码

好的，以下是一个使用Java下载模板文件的示例代码：

import java.io.*;
import java.net.*;

public class DownloadTemplate {

    public static void main(String[] args) {
        String fileUrl = "https://www.example.com/template.docx";
        String saveDir = "/home/user/Documents/";

        try {
            URL url = new URL(fileUrl);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            int responseCode = conn.getResponseCode();

            // Check if response code is OK before downloading
            if (responseCode == HttpURLConnection.HTTP_OK) {
                String fileName = "";
                String disposition = conn.getHeaderField("Content-Disposition");

                // Get the file name from the content-disposition header
                if (disposition != null) {
                    int index = disposition.indexOf("filename=");
                    if (index > 0) {
                        fileName = disposition.substring(index + 10, disposition.length() - 1);
                    }
                } else {
                    fileName = fileUrl.substring(fileUrl.lastIndexOf("/") + 1, fileUrl.length());
                }

                // Create file output stream and input stream to download file
                String saveFilePath = saveDir + fileName;
                FileOutputStream outputStream = new FileOutputStream(saveFilePath);
                InputStream inputStream = conn.getInputStream();

                byte[] buffer = new byte[4096];
                int bytesRead = -1;

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

                System.out.println("File downloaded successfully");
            } else {
                System.out.println("Failed to download file");
            }

        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

这个示例代码可以从指定的URL下载文件，并将文件保存到指定的目录中。请注意，如果您想要下载的模板文件是受保护或需要授权的，则需要添加您的账户信息或令牌到请求头中，以便可以通过授权访问文件。