// 保存一个附件记录
  private Attach saveAttachLog(
      HttpServletRequest request,
      String localFile,
      String ptype,
      String puid,
      SystemContext context,
      String extend,
      long size,
      Calendar now,
      String path,
      boolean absolute) {
    // 剔除文件名中的路径部分
    int li = localFile.lastIndexOf("/");
    if (li == -1) li = localFile.lastIndexOf("\\");
    if (li != -1) localFile = localFile.substring(li + 1);

    // 创建附件记录
    Attach attach = new Attach();
    attach.setAuthor(context.getUserHistory());
    attach.setPtype(ptype);
    attach.setPuid(puid);
    attach.setFormat(extend);
    attach.setFileDate(now);
    attach.setPath(path);
    attach.setSize(size);
    attach.setSubject(localFile);
    attach.setAppPath(!absolute);
    attach = this.getAttachService().save(attach);

    // 创建附件上传日志
    AttachHistory history = new AttachHistory();
    history.setPtype(Attach.class.getSimpleName());
    history.setPuid(attach.getId().toString());
    history.setType(AttachHistory.TYPE_UPLOAD);
    history.setAuthor(context.getUserHistory());
    history.setFileDate(now);
    history.setPath(path);
    history.setAppPath(false);
    history.setFormat(attach.getFormat());
    history.setSubject(attach.getSubject());
    String[] c = WebUtils.getClient(request);
    history.setClientIp(c[0]);
    history.setClientInfo(c[2]);
    this.getAttachService().saveHistory(history);

    return attach;
  }
  public Attach getAttach(
      String subject,
      String code,
      Map<String, Object> args,
      String ptype,
      String puid,
      ActorHistory author,
      Map<String, Object> formatParamSql)
      throws Exception {
    Assert.hasText(subject, "subject is Empty");
    Assert.hasText(code, "code is Empty");
    Assert.hasText(ptype, "ptype is Empty");
    Assert.hasText(puid, "puid is Empty");

    Template template = this.templateDao.loadByCode(code);
    if (template == null) throw new CoreException("Template code:" + code + " not find entity!");

    if (args == null) args = new HashMap<String, Object>();

    if (author == null) {
      if (SystemContextHolder.get() == null) {
        author = this.actorHistoryService.loadByCode("admin");
      } else {
        author = SystemContextHolder.get().getUserHistory();
      }
    }

    Map<String, Object> args4Param = this.getMapParams(template.getId(), formatParamSql);

    if (args4Param != null)
      // 最终替换参数
      args.putAll(this.getMapParams(template.getId(), formatParamSql));

    // 生成附件
    Attach attach = new Attach();
    attach.setAuthor(author);
    attach.setFileDate(Calendar.getInstance());
    attach.setSubject(subject);
    attach.setAppPath(false);
    attach.setFormat(template.getTemplateType().getExtension());
    attach.setStatus(BCConstants.STATUS_ENABLED);
    attach.setPtype(ptype);
    attach.setPuid(puid);

    // 文件存储的相对路径(年月),避免超出目录内文件数的限制
    Calendar now = Calendar.getInstance();
    String datedir = new SimpleDateFormat("yyyyMM").format(now.getTime());

    // 要保存的物理文件
    String realpath; // 绝对路径名
    // uuid
    String fileName =
        UUID.randomUUID().toString().replace("-", "")
            + "."
            + template.getTemplateType().getExtension(); // 不含路径的文件名
    realpath = Attach.DATA_REAL_PATH + "/" + datedir + "/" + fileName;

    // 构建文件要保存到的目录
    File file = new File(realpath);
    if (!file.getParentFile().exists()) {
      if (logger.isInfoEnabled()) {
        logger.info("mkdir=" + file.getParentFile().getAbsolutePath());
      }
      file.getParentFile().mkdirs();
    }

    OutputStream out = new BufferedOutputStream(new FileOutputStream(file));

    this.formatTo(template.getCode(), args, out);

    // 设置附件大小
    attach.setSize(new File(realpath).length());

    // 设置附件相对路径
    attach.setPath(datedir + "/" + fileName);

    return this.attachService.save(attach);
  }