请教高手有关JSP上传文件的问题？？

[manyuan]

请教高手一个关于JSP上传文件的问题：我收到上传文件后保存在默认目录里，现在我想在上传文件时给文件名加一个时间，请高手指点！！
我的代码是这样写的：
myUpload.initialize(pageContext);
myUpload.setTotalMaxFileSize(10000000);
myUpload.upload();
myUpload.save("/upload");

[hbzyduwu]

String savePath = "/upload/";
String tempFileName = System.currentTimeMillis()+"."+file.getFileExt();
String tempSavePath = savePath+tempFileName;
file.saveAs(tempSavePath,up.SAVE_VIRTUAL);

[manyuan]

鞋带老大谢谢你的回答但好像还是不行,我用了renameTo但还是有错
File old=new File("D:/tool/jakarta-tomcat-5.0.24/webapps/upload/+filename");
File qq=new File("D:/tool/jakarta-tomcat-5.0.24/webapps/upload/+name");
old.renameTo(qq);
错误是这样的：
1、to File is ambiguous, both class com.jspsmart.upload.File in com.jspsmart.upload and class java.io.File in java.io match
File qq="D:/tool/jakarta-tomcat-5.0.24/webapps/upload/+name";
2、cannot resolve symbol
symbol : method RenameTo (com.jspsmart.upload.File)
location: class com.jspsmart.upload.File
old.RenameTo(qq);