articledownloadservlet.java

这是一个很好用的软件

package oa.servlet;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import oa.bean.*;
import oa.main.*;

public class articleDownloadServlet extends HttpServlet {
	static final private String CONTENT_TYPE = "text/html; charset=GB2312";

	//Initialize global variables

	//Process the HTTP Get request
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doPost(request, response);
	}

	//Process the HTTP Post request
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		InputStream in = null;
		OutputStream out = response.getOutputStream();
		MailBean mb = null;
		try {
			mb = new MailBean();
			DealString ds = new DealString();
			//取得要下载的文件名
			String name = ds.toString(request.getParameter("newname"));
			String filename = ds.toString(request.getParameter("newfile"));
			String filenewname = name;
			//取得路径
			String temp = oa.main.ParentBean.FilesPath + "news\\appendix\\";
			String saveDirectory = temp;
			//设定头信息
			response.setContentType("application/x-download");

			response.setContentType("text/html; charset=ISO2022CN");
			response.setHeader("Content-disposition", "attachment; filename="
					+ mb.toUtf8String(filename));
			String filepath = saveDirectory + filenewname;
			//向客户端写入字节流
			in = new BufferedInputStream(new FileInputStream(filepath));
			byte[] buf = new byte[2048];
			int bytesRead;
			while ((bytesRead = in.read(buf)) != -1) {
				out.write(buf, 0, bytesRead);
			}
		} catch (Exception e) {
			System.out.print(e);
		} finally {
			if (mb != null)
				mb.closeConn();
			if (in != null)
				in.close();
		}
	}

	//Clean up resources
	public void destroy() {
	}
}