import java.io.*; public class FileUpload { /** * * @param file 文件流 * @param destFilePath 保存到本地的目录路径 * @return */ public static String upload(MultipartFile file, String destFilePath) { InputStream inputStream = null; FileOutputStream fileOutputStream = null; try { String fileName = file.getOriginalFilename(); String[] split = fileName.split("\\."); inputStream = file.getInputStream(); // 数据缓冲 byte[] buffer = new byte[1024 * 1024]; //读取到的数据长度 int len; // 输出的文件流保存到本地文件 File tempFile = new File(destFilePath); if (!tempFile.exists()) { tempFile.mkdirs(); } //重新命名 fileName = Math.random() +"."+ split[split.length-1]; fileOutputStream = new FileOutputStream(tempFile.getPath() + File.separator + fileName); // 开始读取 while ((len = inputStream.read(buffer)) != -1) { fileOutputStream.write(buffer, 0, len); } return fileName; } catch (IOException e) { e.printStackTrace(); } finally { // 完毕,关闭所有链接 try { fileOutputStream.close(); inputStream.close(); } catch (IOException e) { e.printStackTrace(); } } return ""; } }