downloadaction.java

仓库管理系统,适合各种行业的仓库管理系统

package com.caigou.action;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.bean.DAO.StockDAO;
import com.bean.DTO.StockDTO;
import com.bean.DTO.TimeDTO;
import com.database.DataSourceFactory;
import com.servlet.AbstractAction;

public class DownloadAction extends AbstractAction {

	private String forward="";		
	public String  process(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		request.setCharacterEncoding("utf-8");
		File file = new File("e:/data/stock.xls");
		OutputStream out = response.getOutputStream();
		  response.setContentType("application/pdf");
		  response.setContentLength((int)file.length());
		  response.addHeader("Content-Disposition","attachment;filename="+file.getName());
		  InputStream is = new FileInputStream(file);
		  byte[] buffer = new byte[512];
		  int n = 0;
		  while((n=is.read(buffer))!=-1){
		    out.write(buffer,0,n);
		  }
		  is.close();
		  return forward;
	}

}