public class UploadServlet extends HttpServlet{
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
doPost(req, resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
SmartUpload myupload = new SmartUpload();
ServletConfig config = getServletConfig();
myupload.initialize(config,req,resp); resp.setContentType("text/html"); resp.setCharacterEncoding("utf-8"); PrintWriter out = resp.getWriter();
out.println("<h2>处理上传的文件</h2>");
out.println("<hr>");
try {
myupload.setMaxFileSize(1024*1024); myupload.setTotalMaxFileSize(5*1024*1024); myupload.setAllowedFilesList("doc,txt,jpg,gif"); myupload.setDeniedFilesList("exe,bat,jsp,htm,html");
myupload.upload();//上传文件,此项是必须的
int count = myupload.getFiles().getCount(); Request myRequest = myupload.getRequest();
String rndFilename,fileExtName,fileName,filePathName; Date dt = null;
SimpleDateFormat fmt = new SimpleDateFormat("yyyyMMdd"); //一一提取上传文件信息,同时可保持文件
for(int i = 0; i< count; i++){
File file = myupload.getFiles().getFile(i); if(file.isMissing())
continue;
fileName = new String(file.getFileName().getBytes(),"utf-8");//获取文件名 filePathName = new String(file.getFilePathName().getBytes(),"utf-8"); fileExtName = file.getFileExt();
dt = new Date(System.currentTimeMillis()); Thread.sleep(100);
rndFilename = fmt.format(dt)+i+"."+fileExtName; out.println("第"+(i+1)+"个文件的文件信息:<br>");
out.println(" 文件名为:"+fileName+"<br>");
out.println(" 文件扩展名为:"+fileExtName+"<br>");
out.println(" 文件全名:"+filePathName+"<br>");
out.println(" 文件大小:"+file.getSize()/1024+"kb<br>"); //创建文件保存位置
ServletContext context = req.getServletContext();
String savePath = context.getRealPath("/upload/"); java.io.File folder = new java.io.File(savePath);
if(!folder.exists()){
folder.mkdirs();
}
out.println(" 文件保存路径:"+savePath);
file.saveAs(savePath+"/"+rndFilename,SmartUpload.SAVE_PHYSICAL); }
} catch (Exception e) {
out.println("文件上传失败!!!!");
e.printStackTrace();
}
out.flush();
out.close();
}
}
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="com.js
psmart.upload.*" %>
<%
//设定请求编码方式,否则遇到中文就会乱码
request.setCharacterEncoding("utf-8"); %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>上传文件实例</title>
<script type="text/javascript" src="js/
jquery-1.8.1.js"></script>
<script type="text/javascript">
$(function(){
$("#number").change(function(){ var number = $("#number").attr("value"); $("#files").html("");
for(var i = 0; i< number; i++){
$("#files").append("<input type='file' name='file''"+i+"'><br/>"); }
});
});
</script>
</head>
<body>
<h2>上传文件实例</h2>
请选择上传文件数量:
<select id="number">
<option value="1" selected="selected">1</option> <option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
</select>
<form action="UploadServlet" method="post" enctype="multipart/form-data"> <div id="files"></div>
<input type="submit" value="提交"/>
</form>
</body>
</html>