package com.dji.sample.patches.utils;
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import org.springframework.mock.web.MockMultipartFile;
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import org.springframework.web.multipart.MultipartFile;
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import java.io.*;
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import java.util.UUID;
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public class MultipartFileTOFileUtil {
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/**
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* MultiparFile转File
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* @param multipartFile
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* @param unzipPath
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* @return
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*/
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public static File multipartFile2File(MultipartFile multipartFile, String unzipPath) {
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// 创建临时文件
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String randomFileName = UUID.randomUUID().toString();
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String tmpFileDir = unzipPath + randomFileName;
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File file = new File(tmpFileDir);
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InputStream inputStream = null;
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FileOutputStream outputStream = null;
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try {
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// 获取文件输入流
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inputStream = multipartFile.getInputStream();
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if (!file.exists()) {
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file.createNewFile();
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}
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// 创建输出流
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outputStream = new FileOutputStream(file);
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byte[] bytes = new byte[1024];
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int len;
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// 写入到创建的临时文件
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while ((len = ((InputStream) inputStream).read(bytes)) > 0) {
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outputStream.write(bytes, 0, len);
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}
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} catch (Exception e) {
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throw new RuntimeException(e);
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}
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return file;
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}
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public static MultipartFile convert(File file) throws IOException {
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FileInputStream input = new FileInputStream(file);
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MultipartFile multipartFile = new MockMultipartFile("file",
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file.getName(), "application/octet-stream", input);
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return multipartFile;
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}
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/**
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* 将文件转换为MultipartFile类型。
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* @param file 需要转换的文件对象，不可为null。
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* @throws IOException 如果在读取文件时发生错误，则抛出IOException。
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*/
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public static void deleteFile(File file) {
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if (file.exists()) {
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file.delete();
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}
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}
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}
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