package com.cothink.lsys.action.exam;



import java.io.File;

import java.io.FileInputStream;

import java.io.OutputStream;

import java.io.InputStream;

import java.io.UnsupportedEncodingException;



import javax.servlet.http.HttpServletResponse;



import org.apache.struts2.ServletActionContext;



import com.opensymphony.xwork2.ActionSupport;



public class ExamFileAction extends ActionSupport{

	

	private String filename;

	private String filetype;

	private String fileid;

	

	

	public InputStream getDownload()throws Exception{ 

		

		filename=java.net.URLDecoder.decode(filename,"utf8");

		

	    HttpServletResponse response=ServletActionContext.getResponse();

		

		OutputStream o=response.getOutputStream();    

	

		byte b[]=new byte[500];    

        

		File fileLoad=new  File("F:/LearningSys/trunk/src/LearningSys/WebRoot/downloadmaterial/",fileid+"."+filetype);

        



		response.setHeader( "Content-Disposition", "attachment;filename=" + new String( filename.getBytes("gb2312"), "ISO8859-1" )+"."+filetype);

		

		long fileLength=fileLoad.length();

          

		String length=String.valueOf(fileLength);

		

		response.setHeader("Content_Length",length);

        

		

		FileInputStream in=new FileInputStream(fileLoad);

        

		int n=0;

		while((n=in.read(b))!=-1){

		String file_str=new String(b);

		System.out.println(file_str);

		o.write(b,0,n);

		}

		

		o.flush();

		o.close(); 

		in.close(); 

		o = null; 

	    return in; 

	    }

	@Override     

    public String execute() {

		try {

			this.filename= new String(filename.getBytes("iso-8859-1"),"utf-8");

			this.filetype= new String(filetype.getBytes("iso-8859-1"),"utf-8");

			this.fileid= new String(fileid.getBytes("iso-8859-1"),"utf-8");

		} catch (UnsupportedEncodingException e1) {

			e1.printStackTrace();

		}

		try {

			FileInputStream in=(FileInputStream)getDownload();

		} catch (Exception e) {

			e.printStackTrace();

		}

		

		ExamMaterial dlm= new ExamMaterial();

		System.out.println("downloadTimes begin!!!!!");

		dlm.downloadTimes(fileid);

		

		return SUCCESS;

	}

	

	public String getFilename() {

		return filename;

	}

	public void setFilename(String filename) {

		this.filename = filename;

	}

	public String getFiletype() {

		return filetype;

	}

	public void setFiletype(String filetype) {

		this.filetype = filetyp