使用 JSP/ Servlet上载文件正成为一项常用的任务。以下是一个简单的例程，使用了jspsmart的一个免费的组件。你可以在JSPSMART站点进行下载。

1. Html File

action="uploadImage.jsp" ENCTYPE="multipart/form-data"
target=_self>

广告图片上载
广告图片:	name="adsImage" size="20">

2. JSP File
<%@ page language="java" import="com.jspsmart.upload.*,
java.sql.*,java.util.* "%>
<%-- use SmartUpload bean --%>
class="com.jspsmart.upload.SmartUpload" />

<%

//Initialization
mySmartUpload.init(config);
mySmartUpload.service(request,response);

//Set Restriction
mySmartUpload.setAllowedFilesList("gif,bmp,jpeg,jpg");
mySmartUpload.setTotalMaxFileSize(51200);

// Upload
try{
mySmartUpload.upload();
}
catch(Exception e){
out.println("Upload File Fail!
\"JavaScript:window.history.back();\">back
");
out.println("Notes:");

out.println("

You must set correct File
Name.

");
out.println("

You file size must be less than
50K.

");
out.println("

You can only upload .Gif .jpeg .jpg and
.bmp files.

");

return;

}
//save file to disk
mySmartUpload.getFiles().getFile(0).saveAs("/" +
"FileName");

%>

3. Servlet File (you can do it yourself)


资料来源：碧波山庄Visual Basic http://ctsvb.126.com