package com.wind.dairysystem.controller;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.swing.filechooser.FileSystemView;
import com.wind.dairysystem.dao.DBUtil;
public class ImportUserDairyToExcel extends HttpServlet{
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// TODO Auto-generated method stub
resp.setCharacterEncoding("utf-8");
//S流下载
resp.setContentType("application/octet-stream;charset=UTF-8");
//E流下载
String time = req.getParameter("time");
FileSystemView fsv = FileSystemView.getFileSystemView();
String homePath = fsv.getHomeDirectory().getPath();
String fileName = "";
if(time != null)
fileName = "WWPI_成员日志统计结果."+time+".xls";
else
fileName = "WWPI_成员日志统计结果.xls";
String retuName = new String(fileName.getBytes("utf-8"),"ISO8859_1");
fileName = homePath +"\\"+ fileName;
System.out.println(fileName);
File excel = new File(fileName);
String year = time.substring(0, 4);
String mouth = time.substring(5,7);
DBUtil db = new DBUtil();
try {
db.importUserDairyToExcel(excel, year, mouth);
}catch(Exception e){
e.printStackTrace();
}
//STest
// 写流文件到前端浏览器
ServletOutputStream out = resp.getOutputStream();
System.out.println("retuName:" + retuName);
resp.reset();
resp.addHeader("Content-Disposition", "attachment; filename=" + retuName);
BufferedInputStream bis = null;
BufferedOutputStream bos = null;
try {
bis = new BufferedInputStream(new FileInputStream(fileName));
bos = new BufferedOutputStream(out);
byte[] buff = new byte[2048];
int bytesRead;
while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) {
bos.write(buff, 0, bytesRead);
}
} catch (IOException e) {
throw e;
} finally {
if (bis != null)
bis.close();
if (bos != null)
bos.close();
}
excel.delete();
//ETest
//resp.getWriter().print("生成成功！");
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// TODO Auto-generated method stub
this.doPost(req, resp);
}
}
ext前端：
window.open("importUserDairyToExcel?time="+time);