Vamsi Pavan’s Place

Similar exceptions are :
1. java.io.IOException: Io exception: Unexpected packet
2. java.sql.SQLException: Protocol violation
3. java.sql.SQLException: Io exception: Bad packet type
4. java.sql.SQLException: Bigger type length than Maximum
5. java.sql.SQLException: Io exception: Invalid Packet Lenght
6. java.sql.SQLException: Closed Connection
7. java.sql.SQLException: Closed Statement
8. java.sql.SQLException: Refcursor value is invalid
9. java.sql.SQLException: Io exception: Size Data Unit (SDU) mismatch
10. java.sql.SQLException: Must be logged on to […]

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An interesting exception faced while parsing xml content. Also, on further analysis on this error caused below similar issues started to raise.
Another similar exception is:
java.io.UTFDataFormatException: Invalid byte 1 of 1-byte UTF-8 sequence
Here, I am trying to parse an xml string using byte array from the xml string, and give that array as input to xml […]

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Please follow the below steps before coding the upload script in jsp.
1. Download the commons-upload.jar from Apache’s website.
2. Put that jar file into the classpath, i.e in WEB-INF/lib/ directory.
3. Then create a jsp file with the following code and any static HTML page for initial page.
The code here goes:

<%@ page import=”org.apache.commons.fileupload.*,
org.apache.commons.fileupload.servlet.ServletFileUpload,
org.apache.commons.fileupload.disk.DiskFileItemFactory,
org.apache.commons.io.FilenameUtils,
java.util.*,
java.io.File,
java.lang.Exception,
java.io.*,
java.net.*,
org.apache.poi.hssf.usermodel.*” %>
<h1>Data Received at the […]

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On the client side, the client’s browser must support form-based upload. Most modern browsers do, but there’s no guarantee. For example,

<FORM ENCTYPE=’multipart/form-data’
method=’POST’ action=’/myservlet’>
<INPUT TYPE=’file’ NAME=’mptest’>
<INPUT TYPE=’submit’ VALUE=’upload’>
</FORM>

The input type “file” brings up a button for a file select box on the browser together with a text field that takes the file […]

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