文件下载2

oa-app/src/main/java/com/css/oa/exam/announce/controller/AnnounceController.java

    @GetMapping("/download")
    public void download(@RequestParam(value = "uuid") String uuid, HttpServletRequest request, HttpServletResponse response) {
        try {
            if(TextUtils.isEmpty(uuid)){
                exportPrint(response, "未找到此文件!");
                return;
            }
            String token = getToken();
            mService.setToken(token);
            mService.download(uuid, request, response);
        } catch (Exception e1) {
            e1.printStackTrace();

oa-app/src/main/java/com/css/oa/exam/announce/repository/Announce.java

    @Column(name = "IS_TOP")
    public int is_top;
    @Column(name = "FILE_PATH")
    public String file_path;
    @Column(name = "FILE_ID")
    public String file_id;
    @Transient
    public MultipartFile file;

oa-app/src/main/java/com/css/oa/exam/announce/service/AnnounceService.java

    @Override
    public void add(Announce obj) {
        System.out.println("传入的obj => " + obj.toString());
        String file_id = "";
        //上传文件
        if (obj.file != null) {
            Admin admin = Admin.getAdminByToken(token);
            new UploadService().upload(obj.file, admin);
            file_id = new UploadService().upload(obj.file, admin);
        }
        obj.setFile_id(file_id);
        String id = UUIDGenerator.getUUID();
        obj.setUuid(id);
        Date newDate = new Date();
    }
    /*
    *  @param uuid = OP_XM_ENCLOSURE表主键
    */
     *  @param uuid = OP_XM_ENCLOSURE表主键
     */
    @Override
    public void download(String uuid, HttpServletRequest request, HttpServletResponse response) {
        Admin admin = Admin.getAdminByToken(token);
    @Override
    public void update(Announce newObj) {
        //上传文件
        String file_id = "";
        if (newObj.file != null) {
            Admin admin = Admin.getAdminByToken(token);
            new UploadService().upload(newObj.file, admin);
            file_id = new UploadService().upload(newObj.file, admin);
        }
        Optional<Announce> byId = repository.findById(newObj.getUuid());
        Announce old = byId.get();
        CopyObjTool.copyProperties(old, newObj);
        repository.save(newObj);
        Announce old = repository.findById(newObj.getUuid()).get();
        if(!TextUtils.isEmpty(file_id)){
            old.setFile_id(file_id);
        }
        repository.save(old);
    }
    @Override

oa-app/src/main/java/com/css/oa/exam/util/upload/UploadService.java

@Slf4j
public class UploadService {
    public void upload(MultipartFile file, Admin admin) {
    public String upload(MultipartFile file, Admin admin) {
        //1,先上传
        JSONObject json = UploadUtil.upload(file, admin);
        //2,保存数据
        if (json.containsKey("result") && "false".equals(json.getString("result"))) {
            log.debug("上传文档报错：" + json.getString("message"));
            return;
            return "";
        }
        FileInfoEntity entity = entity = new FileInfoEntity();
        entity.setUuid(UUIDGenerator.getUUID());
        entity.setDelFlag(0);
        entity.setIsValid(1);
        fileInfoRepository.save(entity);
        return entity.getUuid();
    }
    @Autowired