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package com.example.demo.Util;
import org.springframework.web.multipart.MultipartFile;
import java.io.*; import java.util.UUID;
public class UploadUtil {
/** * 将文件保存到指定路径 * @return */ public static String save(MultipartFile file, String path) { // 验证文件是不是传了
if (file.getSize() <= 0) { return null; } // 验证文件夹是否存在
File pathFile = new File(path); if (!pathFile.exists()) { // 创建
if (!pathFile.mkdirs()) { return null; } } // 生UUID作为新的文件名
String fileName = UUID.randomUUID().toString(); String oldName = file.getOriginalFilename(); if (oldName.lastIndexOf(".")>=0) { String suffix = oldName.substring(oldName.lastIndexOf(".")); fileName += suffix; } // 创建一个文件流
try (OutputStream out = new FileOutputStream(path + fileName) ){ // 把上传的文件,写到这个流里面
out.write(file.getBytes()); // 写成功了
return fileName; } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e1) { e1.printStackTrace(); } return null; } }
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