package?com.xpy.download;

import?java.io.File;
import?java.io.FileInputStream;
import?java.io.FileOutputStream;
import?java.io.IOException;
import?java.io.OutputStream;
import?java.net.URLEncoder;

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


@SuppressWarnings（“serial“）
public?class?FileDownLoad?extends?HttpServlet?{

	public?void?doGet（HttpServletRequest?request?HttpServletResponse?response）
			throws?ServletException?IOException?{
		
		String?fileName=request.getParameter（“fileName“）;
		//解決參數(shù)亂碼
?		fileName=new?String（fileName.getBytes（“iso8859-1“）“UTF-8“）;
?		
		fileName=this.getServletContext（）.getRealPath（“/WEB-INF/download/“+fileName）;
//?		System.out.println（fileName+“-------->“+File.separator）;
		/*
		?*?檢查文件是否存在、、略
		?*/
		//設(shè)置響應(yīng)頭，控制瀏覽器下載該文件
		response.setHeader（“content-disposition“?“attachment;filename=“+URLEncoder.encode（fileName.substring（fileName.lastIndexOf（File.separator）+1）“UTF-8“））;
		
		//文件下載
		FileInputStream?inputStream=new?FileInputStream（fileName）;
		OutputStream?outputStream=response.getOutputStream（）;
		
		byte?[]buffer=new?byte[1024];
		int?length=0;
		
		while（（length=inputStream.read（buffer））!=-1）{
			outputStream.write（buffer?0?length）;
		}
		inputStream.close（）;
		outputStream.close（）;
	}

	public?void?doPost（HttpServletRequest?request?HttpServletResponse?response）
			throws?ServletException?IOException?{

		doGet（request?response）;
	}

}

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2016-08-25?15:44??FileDownLoad\
?????文件????????1093??2016-08-25?15:44??FileDownLoad\.classpath
?????文件????????1337??2016-08-25?16:01??FileDownLoad\.project
?????目錄???????????0??2016-08-25?15:44??FileDownLoad\.settings\
?????文件?????????522??2016-08-25?15:44??FileDownLoad\.settings\.jsdtscope
?????文件?????????364??2016-08-25?15:44??FileDownLoad\.settings\org.eclipse.jdt.core.prefs
?????文件?????????495??2016-08-25?15:44??FileDownLoad\.settings\org.eclipse.wst.common.component
?????文件?????????414??2016-08-25?15:44??FileDownLoad\.settings\org.eclipse.wst.common.project.facet.core.xml
?????文件??????????49??2016-08-25?15:44??FileDownLoad\.settings\org.eclipse.wst.jsdt.ui.superType.container
?????文件???????????6??2016-08-25?15:44??FileDownLoad\.settings\org.eclipse.wst.jsdt.ui.superType.name
?????目錄???????????0??2016-08-25?15:45??FileDownLoad\src\
?????目錄???????????0??2016-08-25?15:45??FileDownLoad\src\com\
?????目錄???????????0??2016-08-25?15:48??FileDownLoad\src\com\xpy\
?????目錄???????????0??2016-09-18?18:50??FileDownLoad\src\com\xpy\download\
?????文件????????1659??2016-09-18?19:56??FileDownLoad\src\com\xpy\download\FileDownLoad.java
?????文件????????1641??2016-09-18?19:16??FileDownLoad\src\com\xpy\download\ListFileServlet.java
?????目錄???????????0??2016-08-25?15:48??FileDownLoad\src\com\xpy\upload\
?????文件????????8671??2016-09-11?09:16??FileDownLoad\src\com\xpy\upload\FileUpLoadServlet.java
?????目錄???????????0??2016-09-18?18:59??FileDownLoad\WebRoot\
?????文件????????1143??2016-09-18?19:13??FileDownLoad\WebRoot\download.jsp
?????文件?????????834??2016-08-25?15:44??FileDownLoad\WebRoot\index.jsp
?????文件?????????196??2016-08-25?18:46??FileDownLoad\WebRoot\message.jsp
?????目錄???????????0??2016-08-25?15:44??FileDownLoad\WebRoot\meta-INF\
?????文件??????????39??2016-08-25?15:44??FileDownLoad\WebRoot\meta-INF\MANIFEST.MF
?????文件?????????889??2016-08-25?15:59??FileDownLoad\WebRoot\upload.jsp
?????目錄???????????0??2016-09-18?18:53??FileDownLoad\WebRoot\WEB-INF\
?????目錄???????????0??2016-09-14?09:02??FileDownLoad\WebRoot\WEB-INF\classes\
?????目錄???????????0??2016-09-14?09:02??FileDownLoad\WebRoot\WEB-INF\classes\com\
?????目錄???????????0??2016-09-14?09:02??FileDownLoad\WebRoot\WEB-INF\classes\com\xpy\
?????目錄???????????0??2016-09-18?18:50??FileDownLoad\WebRoot\WEB-INF\classes\com\xpy\download\
?????文件????????2409??2016-09-18?19:56??FileDownLoad\WebRoot\WEB-INF\classes\com\xpy\download\FileDownLoad.class
............此處省略12個(gè)文件信息