JAVA下载图片压缩zip

1. 支持多张图片下载

/**
 * 下载附件zip
 */
@PostMapping("downloadZip")
public void downloadZip(@RequestBody ShipmentAnnexVo shipmentAnnexVo, HttpServletRequest request, HttpServletResponse response) {
    shipmentAnnexService.downloadZip(shipmentAnnexVo, request, response);
}

2. serviceImpl实现逻辑

// zip文件名
String zipName = DateUtil.getNowDateYMDHMS();

try {
    // 创建zip输出流,输出到客户端
    ZipOutputStream out = new ZipOutputStream(response.getOutputStream());
    zipName = URLEncoder.encode(zipName, "UTF-8");

    response.reset();
    response.setCharacterEncoding("UTF-8");
    // 不同类型的文件对应不同的MIME类型
    response.setContentType("application/octet-stream");
    // inline在浏览器中直接显示，不提示用户下载
    // attachment弹出对话框，提示用户进行下载保存本地
    // 默认为inline方式
    response.setHeader("Content-Disposition", "attachment;filename=" + zipName);

    for (ShipmentAnnex annex : annexList) {
        InputStream in = tencentMinioManage.get(bucketName, annex.getAnnexFileName());
        String fileName = annex.getOriginFileName().contains(".") ? annex.getOriginFileName() : annex.getOriginFileName() + ".jpg";
        out.putNextEntry(new ZipEntry(fileName));

        int len;
        byte[] buf = new byte[4096];
        while ((len = in.read(buf)) > 0) {
            out.write(buf, 0, len);
        }
        out.closeEntry();
        in.close();
    }
    out.close();

} catch (Exception e) {
    throw new BusinessException("下载ZIP异常!" + e.getMessage());
}