org.apache.poi中的jar包准备
- poi-ooxml 3.14
- poi-ooxml-schemas 3.14(可以不用)
- poi 3.14
impot org.apache.poi.ss.usermodel.Row;
impot org.apache.poi.ss.usermodel.Cell;
impot org.apache.poi.ss.usermodel.Sheet;
impot org.apache.poi.xssf.streaming.SXSSFWorkbook;
public static void download(String file, HttpServletRequest request, HttpServletResponse response) { try { File tempFile = new File(file.trim()); String fileName = tempFile.getName(); InputStream is = new FileInputStream(file); response.reset(); // 必要地清除response中的缓存信息
//文件命名
response.setHeader("Content-Disposition", "attachment; filename="
new String ("文件名".getByte(),"ISO8859-1"+dateFormate(dataFile)+".xlsx")
/ /+java.net.URLEncoder.encode(fileName, "UTF-8"));
//下载xlsx文件
response.setContType("applaication/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=utf-8")
ServletOutputStream out = response.getOutputStream();
byte[] content = new byte[1024]; int length = 0;
while((length = is.read(content)) != -1) {//请留意read里面的参数
out.write(content, 0, length); }
out.flush();
out.close();
is.close(); }
catch (Exception e) { e.printStackTrace(); } }
(主要还是流的应用,要去了解输入输出流才行,具体代码参见其它只提供思路和包路径,还要,要相信自己,
先写出下载再做更改很快)