Thinking

?1 public ? void ?doDownLoad(HttpServletRequest?request,?HttpServletResponse?response,?
?2 ????????????String?absolutePath)? {
?3 ????????
?4 ???????? // 設(shè)置響應(yīng)頭信息
?5 ????????response.setContentType( " application/octet-stream;charset=UTF-8 " );?
?6 ????????log.debug( " GET:? " ? + ?absolutePath);
?7 ????????
?8 ????????String?str? = ?FilePathParseUtil.getFileNameByPath(absolutePath);
?9 ???????? // 調(diào)用自定義的編碼函數(shù)，解決不同瀏覽器上對漢字編碼的處理
10 ????????str? = ? this .encodeFileName(request,?str) == null ? str: this .encodeFileName(request,?str);
11 ???????? // 設(shè)置response頭信息，從而顯示正確的文件名，并彈出另存對話框
12 ????????response.setHeader( " Content-Disposition " ,? " attachment;?filename= " ?
13 ???????????????? + ?str);
14 ????????OutputStream?out? = ? null ;
15 ???????? try {
16 ???????????? // 從response得到輸出流，從而向客戶端寫出文件
17 ????????????out? = ?response.getOutputStream();
18 ????????} catch (IOException?e) {
19 ????????????log.error( " output?stream?is?null " );
20 ????????????e.printStackTrace();
21 ????????}
22 ???????? this .doDownLoad(out,?absolutePath);
23 ????}
24 ????
25 ???? /**?*/ /**
26 ?????*?根據(jù)不同瀏覽器對文件名進(jìn)行編碼
27 ?????*? @param ?request?客戶端請求
28 ?????*? @param ?fileName?文件名
29 ?????*? @return ?編碼后的文件名
30 ????? */
31 ???? public ?String?encodeFileName(HttpServletRequest?request,?String?fileName) {???
32 ????????String?agent? = ?request.getHeader( " USER-AGENT " );
33 ???????? try {
34 ???????????? if ?( null ? != ?agent? && ? - 1 ? != ?agent.indexOf( " MSIE " ))? {???
35 ???????????????? return ?URLEncoder.encode(fileName,? " UTF-8 " );???
36 ????????????} else ? if ?( null ? != ?agent? && ? - 1 ? != ?agent.indexOf( " Mozilla " ))? {???
37 ???????????????? return ? " =?UTF-8?B? " +
38 ???????????????????????? new ?String(
39 ????????????????????????????????Base64.encodeBase64(
40 ????????????????????????????????????fileName.getBytes( " UTF-8 " )
41 ????????????????????????????????)
42 ????????????????????????)? + ? " ?= " ;???
43 ????????????} ? else ? {???
44 ???????????????? return ?fileName;???
45 ????????????}
46 ????????} catch (UnsupportedEncodingException?e) {
47 ???????????? return ? null ;
48 ????????}
49 ????} ??