Reading form file data in servlet
Does anyone have any familiarity with reading data posted by a form such as the following in a servlet:
<form method="post" action="load_user_file">
Label: <input type="text" name="label" size="20"><br>
Data to be sent: <input type="file" enctype="multipart/form-data" size="50"><br>
<input type="submit" name="Submit">
</form>
I would really prefer to get the label data in the "usual way," through the request parameters, but failing that, some way to parse the information "automatically" would be good.
Thanks in advance for any help!
- Jerry Oberle
you want to upload a file....
the best resource will be to look at MultipartRequest class which can be found at
www.servlets.com
anurag
[email protected]
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Hi,
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import videos.*;
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Error in SimpleInput.readInt() - digit expected
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public Video(int refNum, int titlerefNum, String filmOffer) {
referenceNumber = refNum;
titleReferenceNumber = titlerefNum;
String[] words = filmOffer.split(",");
videoOffer = words[0];
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Read xml file from jsp/servlet
Hi all,
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(is - in while - method) sun.jdbc.odbc.JdbcOdbcInputStream@c02a
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Mar 16, 2005 9:32:44 AM org.apache.catalina.core.ApplicationDispatcher invoke
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Thanks
AlI'm not sure why either, though the API docs mention "takes File to populate a StreamResult", which really does not make any sense. The File would be populated by the StreamResult. The way it is written would only make sense, at least to me, if the File was being used as input.
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- Saish -
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Read BMP File Requires Absolute Path
I noticed something today regarding the Graphics Formats, Read JPG File, Read PNG File and Read BMP File vi's. It seems that when reading a JPG or PNG file, a relative path is OK, but when reading a BMP file, an absolute path is required. When the path only contains the filename, it returns:
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Thanks!
B-)
Message Edited by LabViewGuruWannabe on 11-05-2007 11:06 PM
Attachments:
ReadImageFileTest-FPgood.PNG 30 KB
ReadImageFileTest-FPbad.PNG 26 KB
ReadImageFileTest-BD1.PNG 48 KBMissed this on the first post:
Message Edited by LabViewGuruWannabe on 11-05-2007 11:10 PM
Attachments:
ReadImageFileTest-BD.PNG 48 KB -
How to read svg file by Xerces2 -j java
How can we read svg file data by using Xerces2 -j java
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Hello,
I want to read client file after it's posted in an HTML form. But, I don't want to upload it to filesystem or database. I want to read posted file as an input stream. How can I do that ?
thanks in advance...A couple of things. If you have a FILE field in your form, the enctype of the form must be multipart/form-data. Check this link
http://www.htmlhelp.com/reference/html40/forms/form.html
Also, when a file is uploaded you cannot use the regular methods to get at the name/value pairs or the file itself. You'll have to use a utility like MultiPartRequest or write your own based on the RFC for Multipart requests.
http://www.servlets.com/cos/javadoc/com/oreilly/servlet/MultipartRequest.html
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hth -
Form jsp data are not going to servlet
Hi guys
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Error: 500
Location: /BookingApp/servlet/BookingProcessServlet
Internal Servlet Error:
java.lang.NullPointerException
at BookingProcessServlet.generateDOM(BookingProcessServlet.java:119)
at BookingProcessServlet.doPost(BookingProcessServlet.java:294)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.tomcat.facade.ServletHandler.doService(ServletHandler.java:574)
at org.apache.tomcat.core.Handler.invoke(Handler.java:322)
at org.apache.tomcat.core.Handler.service(Handler.java:235)
at org.apache.tomcat.facade.ServletHandler.service(ServletHandler.java:485)
at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:917)
at org.apache.tomcat.core.ContextManager.service(ContextManager.java:833)
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at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:494)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:516)
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generateXMLDocument(newDOMTree);
HttpSession session = request.getSession(true);
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Please this is is urgent. the problem is I am new in JSP and Java Servlet programming. So I dont have any idea what is this problem.
please reply as soon as possible. thank u guys.
waiting for the replies.hei chk d ff code : this code works i tried dis before i gave it to u
<HTML>
<%@ page import="java.io.*"%>
<%@ page import="java.util.*"%>
<%
if(request.getParameter("submit")!=null){
String filename="C:/Program Files/Apache Group/Tomcat 4.1/webapps/lbc/xml/test.xml";
String xmlString = "<xml>";
Enumeration enums = request.getParameterNames();
while(enums.hasMoreElements()){
String tagname= (String) enums.nextElement();
xmlString = xmlString +"<"+tagname+">";
xmlString = xmlString +request.getParameter(tagname);
xmlString = xmlString +"</"+tagname+">";
System.out.println(xmlString);
try {
BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(new File(filename)));
bos.write(xmlString.getBytes());
bos.flush();
bos.close();
catch (IOException ioe) {
System.out.println(ioe.toString());
response.sendRedirect("Confirmation.jsp");
%>
<TABLE CELLSPACING="1" CELLPADDING="0" BORDER="0" WIDTH="50%">
<FORM method="post" NAME="test">
<TR>
<TD BGCOLOR="#94976E">First Name:</TD>
<TD><input type="text" name="fname"/></TD>
</TR>
<TR>
<TD BGCOLOR="#94976E">Last Name</TD>
<TD><input type="text" name="lname"/></TD>
</TR>
<TR>
<TD BGCOLOR="#94976E">Middle Initial</TD>
<TD><input type="text" name="iname"/></TD>
</TR>
<tr>
<td colspan="2" align="center"><INPUT TYPE="SUBMIT" NAME="submit" VALUE="Send"/></td>
</tr>
</FORM>
</TABLE>
</HTML>
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