模板
教程
环境
性能
功能
管理
使用servlet和jsp上载文件
发表于：2007-07-01来源：作者：点击数：
标签：
Use JSP and Servlet to Upload file to server is becoming a common task now. Below is a simple example use the jspsmart free component which implements it. You can download the free package from JSPSMART 1. Html File html body script LANGUAG
Use JSP and Servlet to Upload file to server is becoming a common task now.
Below is a simple example use the jspsmart free component which
implements it.
You can download the free package from JSPSMART
1. Html File
<html>
<body>
<script LANGUAGE="javascript" SRC="JSFunction.js">
</script>
<script language="JavaScript">
<!--
function checkForm(){
if (document.uploadform.adsImage.value==""){
alert("You must choose what image file to upload!");
return false;
}
document.uploadform.submit();
}
function cancelUpload(){
window.close();
window.opener.focus();
}
//-->
</script>
<form name="uploadform" method="post"
action="uploadImage.jsp" ENCTYPE="multipart/form-data"
target=_self>
<center>
<table border="1" width="65%">
<tr>
<td colspan=2 nowrap align=center>广告图片上载</td>
</tr>
<tr>
<td width="15%" nowrap >广告图片:</td>
<td width="50%" nowrap><input type="file"
name="adsImage" size="20"></td>
</tr>
<tr>
<td align="center" colspan=2 >
<input type="button" value="upload" onclick="return
checkForm();" >
<input type="button" value="Cancel" onclick="return
cancelUpload();">
</td>
</tr>
</form>
</table>
<!--
<a href="Javascript:window.close();">close this window</a>
-->
<script language="JavaScript">
<!--
this.focus();
//-->
</script>
</body>
2. JSP File
<%@ page language="java" import="com.jspsmart.upload.*,
java.sql.*,java.util.* "%>
<%-- use SmartUpload bean --%>
<jsp:useBean id="mySmartUpload" scope="page"
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("<font color=red>Upload File Fail!</font>
<a href=
\"JavaScript:window.history.back();\">back</a><br>");
out.println("<UI>Notes:</UI>");
out.println("<UL>You must set correct File
Name.</UL>");
out.println("<UL>You file size must be less than
50K.</UL>");
out.println("<UL>You can only upload .Gif .jpeg .jpg and
.bmp files.</UL>");
return;
}
//save file to disk
mySmartUpload.getFiles().getFile(0).saveAs("/" +
"FileName");
%>
3. Servlet File (you can do it yourself)
