/**
* 文件上传
*
* @param request
* @param response
* @throws Exception
*/
@RequestMapping(value = "/upload")
public void fileupload(MultipartHttpServletRequest request, HttpServletResponse response)
throws Exception {
UserBasicInfo user = UserBasicInfo.getFromSession(request);
List<MultipartFile> list = request.getFiles("files");
String rtMsg = ""; // 返回的消息
String fids = ""; // 成功上传后的ID
String fnames = ""; // 成功上传的文件
Iterator<MultipartFile> it = list.iterator();
while (it.hasNext()) {
MultipartFile file = it.next();
if (file.getSize() <= 0 || "".equals(file.getOriginalFilename())) {
continue;
}
String fname = file.getOriginalFilename();
String vldMsg = FileUploadValidator.validate(file);
if (vldMsg != null) {
rtMsg += "\r\n" + fname + ":\t" + vldMsg;
continue;
}
// TODO 文件别名、备注等信息
String alisName = fname; // 文件别名
String remark = ""; // 备注
float fsize = file.getSize() / 1024; // 文件大小
String fullpath = FileUploadUtil.upload(file, alisName); // 上传并返回路径
String fileExt = FileUploadUtil.getFileExt(fname); // 文件类型
long attId =
attachmentService.insert(alisName, fullpath, fsize, fileExt, remark, user.getUserId());
fids += attId + ",";
fnames += fname + ",";
}
// 输出
JSONObject json = new JSONObject();
if (!"".equals(rtMsg)) {
json.put("xukea_type", "error");
json.put("xukea_status", BaseConstants.HTTP_SERVER_ERROR);
json.put("xukea_msg", "以下文件上传失败" + rtMsg);
} else {
json.put("xukea_type", "success");
json.put("xukea_status", BaseConstants.HTTP_OK);
json.put("xukea_msg", "所有文件上传成功");
}
json.put("data", "{ids:'" + fids + "', fnames:'" + fnames + "'}");
String cntype = "text/html";
this.output(request, response, cntype, json.toString());
}
/**
* 文件下载
*
* @param request
* @param response
* @throws PageNotFoundException
* @throws IOException
* @throws Exception
*/
@RequestMapping(value = "/download/{fid}")
public void downloadFile(
HttpServletRequest request, HttpServletResponse response, @PathVariable long fid)
throws PageNotFoundException, IOException {
Attachment file = attachmentService.getFileById(fid);
if (file == null) {
throw new PageNotFoundException();
}
String fileName = file.getFileName(); // 得到下载文件的名字
// int fileSize = (int) file.getFileSize() * 1024;
try {
String agent = WebUtil.getClientInfo(request);
if (null != agent && -1 != agent.indexOf("MSIE")) {
fileName = URLEncoder.encode(fileName, "UTF-8");
fileName = StringUtil.replace(fileName, "+", "%20");
} else {
fileName = new String(fileName.getBytes("UTF-8"), "iso-8859-1");
// fileName = StringUtil.replace(fileName, " ", "%20");
}
} catch (UnsupportedEncodingException e1) {
e1.printStackTrace();
}
response.setHeader("Content-Disposition", "attachment;filename=\"" + fileName + "\"");
response.setContentType(FileUploadUtil.getFileMimeType(file.getFileType())); // 设置response的编码方式
// response.setContentLength( fileSize ); // 暂时去除文件大小的输出，防止浏览器接受数据不完整
try {
OutputStream myout = response.getOutputStream(); // 从response对象中得到输出流,准备下载
FileInputStream fis = new FileInputStream(file.getFileUrl()); // 读出文件到i/o流
BufferedInputStream buff = new BufferedInputStream(fis);
int read = 0;
byte[] temp = new byte[1024]; // 相当于我们的缓存
while ((read = buff.read(temp)) != -1) {
myout.write(temp, 0, read);
}
// 将写入到客户端的内存的数据,刷新到磁盘
myout.flush();
buff.close();
myout.close();
} catch (IOException e) {
log.error("download error, file id is " + fid, e);
throw e;
}
}
