專案需要大量的excel檔案作為資料來源，然後寫了一個java小程式用來直接下載網頁下載連結的內容。這樣使用Java程式設計可以進行指定任務的下載
匯入相應的包

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

核心下載程式碼

            // opens input stream from the HTTP connection
 

            InputStream inputStream = httpConn.getInputStream();
            String saveFilePath = saveDir + File.separator + fileName;

            // opens an output stream to save into file
            FileOutputStream outputStream = new FileOutputStream(saveFilePath);

            int bytesRead = -1
 
;
            byte[] buffer = new byte[BUFFER_SIZE];
            while ((bytesRead = inputStream.read(buffer)) != -1) {
                outputStream.write(buffer, 0, bytesRead);
            }