Hi, Dear all ...I need some helps ~~~
I am coding a servlet about file upload...
I use oreilly's package , name MultiRequest , to help to handle
multipart/form-data reequests.
But I meet a problem ....
My OS is win 2000 and Tomcat 3.2.1 & Jdk 1.3.0_01
When I startup server , in the webpage , this servlet only can work
ONCE.....
I don't know what' wrong with this situation ...
Where I miss something ???
Or there is something need to rewrtie in server.xml or web.xml ???
Thanks ...
Sincerely,
Jessie
PS: This is my first time to wrtie Servlet and Tomcat ....
Here is code context ~~~
import javax.servlet.*;
import javax.servlet.http.*;
file://import javax.servlet.jsp.*;
file://import javax.servlet.jsp.tagext.*;
import java.io.PrintWriter;
import java.io.IOException;
import java.io.FileInputStream;
import java.io.ObjectInputStream;
import java.util.Vector;
file://import java.beans.*;
import java.io.*;
import java.util.*;
import com.oreilly.servlet.MultipartRequest;
public class fUpload extends HttpServlet {
String saveDirectory = "C:\\Upload\\"; file://宣� 將�
傳的檔案放置到伺服
器的C:\Upload目錄中
int maxPostSize = 5 * 1024 * 1024 ; file://宣� 限制�
傳之檔案大小為
5MB
String FileDescription[] = {null,null,null}; file://宣� 敘述� 傳檔案內容
的� 數,型態是String
String FileName = null; file://宣� � 傳檔案名稱
int count = 0 ; file://計算� 傳檔案之個數
public void service(HttpServletRequest req,HttpServletResponse resp)
throws ServletException,java.io.IOException{
doPost(req,resp);
}
public void doPost(HttpServletRequest request, HttpServletResponse
response)
throws IOException, ServletException {
PrintWriter out = null;
MultipartRequest multi = new MultipartRequest(request ,
saveDirectory , maxPostSize );
try {
response.setContentType("text/html;charset=big5");
out = response.getWriter();
out.println("\r\n");
out.println("\r\n");
out.println("\r\n");
out.println("\r\n\r\n");
out.println("\r\n<html>\r\n<head>\r\n\t<title>File Upload
Test Page</title>\r\n</head>\r\n");
out.println("\r\n<body>\r\n");
if ( multi.getParameter("File1") != null )
FileDescription[0] = multi.getParameter("File1");
}
else
{ FileDescription[0] = "1"; }
if ( multi.getParameter("File2") != null )
FileDescription[1] = multi.getParameter("File2");
}
else
{ FileDescription[1] = "2"; }
if ( multi.getParameter("File3") != null )
FileDescription[2] = multi.getParameter("File3"); }
else
{ FileDescription[2] = "3"; }
Enumeration filesname = multi.getFileNames();
while (filesname.hasMoreElements())
{
String name = (String)filesname.nextElement();
FileName = multi.getFilesystemName(name);
File f = multi.getFile(name);
String ContentType = multi.getContentType(name);
if (FileName != null)
{
count ++;
out.println("\r\n\t\t\t\t<font color=\"red\">� � 傳的第");
out.print( count );
out.println("個的檔案:</font><br>\r\n\t\t\t\t檔案名稱為:");
out.print( FileName );
out.println("<br>\r\n\t\t\t\t檔案型態為:");
out.print( ContentType );
out.println("<br>\r\n\t\t\t\t檔案的敘述:");
out.print( FileDescription[count-1] );
out.println("<br><br>\r\n");
}
}
out.println("\r\n\t\t您總共� 傳<font color=\"red\">");
out.print( count );
out.println("</font>個檔案\r\n</body>\r\n</html>\r\n");
} catch (Exception ex) {
System.out.println(ex);
} finally {
out.flush();
out.close();
}
}// end of doPost()
}
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