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用JSP/Servlets实现Web方式的文件上传
摘要: 用JSP/Servlets实现Web方式的文件上传
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
<body>
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();
}
//
<form name="uploadform" method="post"
<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"
</tr>
<tr>
<td align="center" colspan=2 >
<input type="button" value="upload" onclick="return
<input type="button" value="Cancel" onclick="return
</td>
</tr>
</form>
</table>
close this window
this.focus();
//
</body>
2. JSP File
<%@ page language="java" import="com.jspsmart.upload.*,
java.sql.*,java.util.* "%>
<%-- use SmartUpload bean --%>
<%
//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("
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)
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