如何将文件或者图片压缩成zip文件压缩包

代码:

@RestController
@RequestMapping("/download")
public class DownloadController {

    @GetMapping("/studentWork")
    public ResponseEntity<StreamingResponseBody> downloadStudentWork() {
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);

        String encodedFileName = "作品名称-学生姓名.zip";
//        StringBuffer stringBuffer = new StringBuffer();
//        stringBuffer.append("作品名称"+"-学生姓名.zip");
//
        try {
            encodedFileName = URLEncoder.encode(encodedFileName, StandardCharsets.UTF_8.toString());
            System.out.println(encodedFileName);
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        headers.setContentDispositionFormData("attachment", encodedFileName);
        StreamingResponseBody responseBody = outputStream -> {
            try (ZipOutputStream zipOut = new ZipOutputStream(outputStream)) {
                // 假设这是学生的作品海报图片文件流
                InputStream imgStream = getStudentPosterData();
                addToZip(zipOut, imgStream, "作品封面.jpg");


                // 添加更多附件,如果有的话
                zipOut.finish();
            } catch (IOException e) {
                // 处理异常
            }
        };

        return new ResponseEntity<>(responseBody, headers, HttpStatus.OK);
    }

    private void addToZip(ZipOutputStream zipOut, InputStream inputStream, String fileName) throws IOException {
        ZipEntry zipEntry = new ZipEntry(fileName);
        zipOut.putNextEntry(zipEntry);

        byte[] buffer = new byte[1024];
        int bytesRead;
        while ((bytesRead = inputStream.read(buffer)) != -1) {
            zipOut.write(buffer, 0, bytesRead);
        }

        zipOut.closeEntry();
        inputStream.close();
    }

    // 获取学生作品海报图片数据的示例方法
    private InputStream getStudentPosterData() throws FileNotFoundException {
        FileInputStream inputStream = new FileInputStream("C:\\Users\\admin\\Pictures\\Saved Pictures\\微信图片_20230914093742.png");
        String filePath =  "C:\\Users\\admin\\Pictures\\Saved Pictures\\微信图片_20230914093742.png";
        File file = new File(filePath);
        if (file.exists()){
            System.out.println("文件存在");
        }else {
            throw new RuntimeException();
        }
        return inputStream;
    }

示例:

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转载自blog.csdn.net/XikYu/article/details/132904618