Java开发网 - 怎样编写上传程序？

Topic: 怎样编写上传程序？

1.怎样编写上传程序？	Copy to clipboard
Posted by: AT Posted on: 2003-03-24 09:22 我想编写一个上传的SERVLET或BEAN 有哪位能简单描述一下编写上传程序的思想或解决方法吗？谢谢！！！

2.Re:怎样编写上传程序？ [Re: AT]	Copy to clipboard
Posted by: floater Posted on: 2003-03-25 02:05 There are codes on the net to do so. Do a search. Structs has a servlet, there is one more, I don't remember.

3.Re:怎样编写上传程序？ [Re: AT]	Copy to clipboard
Posted by: chaos Posted on: 2003-03-25 03:33 1. read the spec. http://www.ietf.org/rfc/rfc1867.txt 2. GOTO Orielly servlet collection site : http://www.servlets.com/cos/index.html SELECT class MultipartRequest (It can now with the latest release handle internationalized content ) 3.Do a search. There're lots of examples you can find.

4.Re:怎样编写上传程序？ [Re: chaos]

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Posted by: gunrose
Posted on: 2003-03-25 13:00

There is no Servlet/JSP API where you can retreive the uploaded file. However, you can use a third party package such as com.oreilly.servlet from Oreilly. You can take a look at the .java sources in this package to see how the uploaded files and parameters are parsed out. Here is a code snippet using the MultipartParser

import java.io.*;
import com.oreilly.servlet.multipart.*;

int maxFileSize = 5 * 1024 * 1024; // 5MB max
String uploadDir = "/tmp/";
MultipartParser parser =
new MultipartParser(request, maxFileSize);
Part p = null;
long numBytes = 0;

while((p = parser.readNextPart()) != null)
{
if(p.isParam())
{ //Do something here with other form
//elements that are not files
}
else if(p.isFile())
{ FilePart fp = (FilePart)p;
// my_file is the name of the file
// declared in the html form
if (p.getName().equals("my_file"))
{ numBytes =
fp.writeTo(new File(uploadDir));
}
}
}

Another solution to make handling multipart/form-data POST request easier is to use the MultipartFilter class. For more information on MultipartFilter class, check out the com.oreilly.servlet package.

5.Re:怎样编写上传程序？ [Re: AT]	Copy to clipboard
Posted by: AT Posted on: 2003-03-26 16:53 谢谢楼上的各位朋友！！小弟试试看。