/**
* 下载附件
*
* @author 何道军
* @date 2011-1-7
* @return String
*/
public String downloadAttach() {
try {
if (attachId == 0) {
result = "不存在的附件ID,下载失败，请稍后再试！";
return "success";
}
Attach attach = attachService.getAttach(attachId);
if (attach == null) {
write(
"<html><head><title>出错了</title></head><body>"
+ "<div style=\"text-align: center;margin-top: 100px;\">您下载的附件不存在，请检查数据完整性！</div>"
+ "</body></html>");
return null;
}
fileStream = new FileInputStream(attach.getAttachUrl());
uploadAttachFileName = attach.getAttachName();
attach.setDownloadTime(attach.getDownloadTime() + 1);
attachService.updateAttach(attach);
} catch (FileNotFoundException e) {
write(
"<html><head><title>出错了</title></head><body>"
+ "<div style=\"text-align: center;margin-top: 100px;\">您下载的文件不存在，可能已经从服务器上删除！</div>"
+ "</body></html>");
return null;
} catch (Exception e) {
e.printStackTrace();
}
return "success";
}
/**
* 添加附件
* {"attachType":null,"attachName":"intel_ICS_Dx32.exe","result":"Y","attachGroupId":281,"attachId":345,"attachSize":"7.42
* MB"}
*
* @author 何道军
* @date 2011-1-7
* @return String
*/
public String addAttach() {
Map<String, Object> attachMap = new HashMap<String, Object>();
if (uploadAttach == null) {
attachMap.put("success", false);
attachMap.put("result", "添加失败。");
JsonUtil.outJson(attachMap);
return null;
}
if (uploadAttach.length() == 0) {
attachMap.put("success", false);
attachMap.put("result", "添加失败：不能上传大小为0 KB的文件。");
JsonUtil.outJson(attachMap);
return null;
}
if (maximumSize != null && maximumSize > 0 && maximumSize < uploadAttach.length()) {
attachMap.put("success", false);
attachMap.put(
"result",
"添加失败：文件大小不能超过 "
+ FormatUnitsUtil.formatBytes(maximumSize)
+ "。当前文件大小为："
+ FormatUnitsUtil.formatBytes(uploadAttach.length()));
JsonUtil.outJson(attachMap);
return null;
}
if (StringUtils.isNotBlank(allowedExtensions)
&& !allowedExtensions.contains(FileUtil.getFileExp(uploadAttachFileName))) {
attachMap.put("success", false);
attachMap.put("result", "添加失败：只能上传后缀名为：" + allowedExtensions + "的文件。");
JsonUtil.outJson(attachMap);
return null;
}
try {
if (attachGroupId != 0) {
attachGroup = attachGroupService.getAttachGroup(attachGroupId);
if (attachGroup == null) {
attachMap.put("success", false);
attachMap.put(
"result", "系统错误：更新的附件组ID:" + attachGroupId + "不存在，如果要重新生成附件组ID,请设置附件组ID为空或0！");
JsonUtil.outJson(attachMap);
return null;
}
} else {
attachGroup = new AttachGroup();
attachGroup.setStatus(STATUS_NOT_DELETE);
attachGroup.setSubmitDate(new Date());
attachGroupService.saveAttachGroup(attachGroup);
}
dealSavePath();
attach = new Attach();
attach.setStatus(STATUS_NOT_DELETE);
attach.setAttachName(uploadAttachFileName);
attach.setAttachType(attachType);
String attachURL = FileUtil.upload(uploadAttach, uploadAttachFileName, savePath);
attach.setAttachUrl(attachURL);
attach.setAttachGroup(attachGroup);
attach.setSubmitDate(new Date());
attach.setFileSize(FormatUnitsUtil.formatBytes(uploadAttach.length()));
attach.setDownloadTime(0);
attachService.saveAttach(attach);
attachMap.put("attachGroupId", attachGroup.getAttachGroupId());
attachMap.put("attachName", attach.getAttachName());
attachMap.put("attachId", attach.getAttachId());
attachMap.put("attachType", attach.getAttachType());
attachMap.put("fileSize", attach.getFileSize());
attachMap.put("success", true);
} catch (Exception e) {
attachMap.put("success", false);
attachMap.put("result", "添加失败：" + e.getMessage());
e.printStackTrace();
}
JsonUtil.outJson(attachMap);
return null;
}