Excel 下载工具类:
public HttpServletResponse download(String path, HttpServletResponse response) {
try {
// path是指欲下载的文件的路径。
File file = new File(path);
// 取得文件名。
String filename = file.getName();
// 取得文件的后缀名。
String ext = filename.substring(filename.lastIndexOf(".") + 1).toUpperCase();
// 以流的形式下载文件。
InputStream fis = new BufferedInputStream(new FileInputStream(path));
byte[] buffer = new byte[fis.available()];
fis.read(buffer);
fis.close();
// 清空response
response.reset();
// 设置response的Header
response.addHeader("Content-Disposition", "attachment;filename=" + new String(filename.getBytes()));
response.addHeader("Content-Length", "" + file.length());
OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
response.setContentType("application/octet-stream");
toClient.write(buffer);
toClient.flush();
toClient.close();
} catch (IOException ex) {
ex.printStackTrace();
}
return response;
}
数据填充方法:
@RequestMapping({ "/manage/datastatistical_show.htm" })
public void datastatistical_show(HttpServletRequest request, HttpServletResponse response) {
List<DataStatistical> dsList = this.dataStatisticalService.query("select obj from DataStatistical obj order by obj.addTime asc", null, -1, -1);
List<String> header = new ArrayList<String>();
header.add("用户名");
header.add("开始时间");
header.add("结束时间");
header.add("店铺名称");
header.add("店员名称");
header.add("访问内容");
List<Map> data = new ArrayList<Map>();
for (DataStatistical ds:dsList) {
Map<String, String> map = new HashMap<>();
map.put("用户名", ds.getUser().getUserName());
map.put("开始时间", ds.getBeginTime().toString());
map.put("结束时间", ds.getEndTime().toString());
map.put("店铺名称", (ds.getStore()==null)?null:ds.getStore().getStore_name());
map.put("店员名称", (ds.getClerkuser()==null)?null:ds.getClerkuser().getUser().getUserName());
map.put("访问内容", ds.getLook_type());
data.add(map);
}
String path="";
try {
String realPath=request.getRealPath("/");
path=realPath+"/download/"+UUID.randomUUID()+".xls";
ExcelFileUtils.OutputExcel(path,header, data);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
new OrderSellerAction().download(path, response);
}