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kunal Jaggi

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since Sep 16, 2003
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Recent posts by kunal Jaggi

We are into serious Cookie business

I have just started reading HFSJ book. The book I indeed good but it fails to explain the Cookie features completely.

I wanna know, that how can we make a Cookie exist on the client machine for ever. The setMaxAge(int secs) method just makes it alive on the client for the specified period. But, how do I go about persisting it on the client machine.

Also, I now that somewhere there�s a folder called �cookies� in my Windows OS. I hope it�s this folder where all my cookies are stored?

Rgds,
Kunal Jaggi
SCJP
Hi! Bibeault,
Thanks 4 the post.
I have gone through the article.
What I suggested in my previous post is the GET method of sending output to the servlet.

Following is the code snippet from the article to incorporate the POST method:
// connect to the servlet
String location = "http://www.foo.com/servlet/TestServlet";
URL testServlet = new URL( servletLocation );
URLConnection servletConnection = testServlet.openConnection();

// inform the connection that we will send output and accept input
servletConnection.setDoInput(true);
servletConnection.setDoOutput(true);

// Don't use a cached version of URL connection.
servletConnection.setUseCaches (false);
servletConnection.setDefaultUseCaches (false);

// Specify the content type that we will send binary data
servletConnection.setRequestProperty
("Content-Type", "<insert favorite mime type>");

// get input and output streams on servlet
. . .

// send your data to the servlet
. . .

But, I'm struck at how actually I would send request parameters as request/value pair?

Regards,
Kunal Jaggi
SCJP
16 years ago
Hi!,
I have thought of one alternative to the problem.

Code Snippet:
URL url = new URL("http://localhost:8080/servlet/SalarySurveyServlet?emp_id=MKT_001");

Although this works but, i don't want to append the request parameter to the URL as a HTTP GET request.

Regards,
Kunal Jaggi
SCJP
16 years ago
Hi Smith,
Thanks 4 the post, but it still doesn't solve my query.
I want to send request parameter 2 a servlet.
I tried doing this:
BufferedOutputStream out=new BufferedOutputStream(conn.getOutputStream());
out.write("MKT___001".getBytes());
out.flush();
out.close();

But it throws 405 exception.
Regards,
Kunal Jaggi
SCJP
16 years ago
Hi!,
I want to connect my Java applications to Java servers through HTTP. To do this I have created servlets on the server side and wrap all client messages in HTTP requests.

On the client side, my code should use the URLConnection to send data to the server:



//connect
URL url = new URL("http://localhost:8080/servlet/myservlet");

URLConnection conn = url.openConnection();
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setRequestProperty("Content-Type", "application/octet-stream");

//Open output stream and send some data.
OutputStream out = conn.getOutputStream();
//I am not going to send anything on "out," but you can fill this in.

out.flush();
out.close();

//Open input stream and read the data back.
InputStream in = conn.getInputStream();

//Here you would read the data back.

in.close()

Everything is working fine. But, my servlet does dome dynamic content generation on client input, how do i send data as REQUEST PARAMETER to the servlet?

Regards,
Kunal Jaggi
Sun Certified Java Programmer
17 years ago
Hi!!
It's working fine now...thanks.....

I want to change my public display name, how do I go about doing that??

Regards,
Kunal Jaggi
17 years ago
I’m using the following Open Source softwares to build a J2EE Web Application:

Linux-- OS (Mandrake Linux 9.1)
Apache-- Web Server (Tomcat 5)
Tomcat-- Servlet Container
MySQL-- Database

I have the following environment variables correctly in the /etc/profile file:

PATH� points to my J2SDK installation
CLASSPATH � set to compile servlets and path to MYSQL
CATALINA_HOME � points to Tomcat installation
JAVA_HOME� points to JDK installation

I can run servlets and JSP.

The problem that I’m facing is that although I can access the MYSQL DB from a standalone application but not from a servlet.

Here is the servlet code snippet:

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.sql.*;

public class TestServlet extends HttpServlet{
Connection con = null;
Statement stmt=null;
ResultSet rs=null;

public void doGet(HttpServletRequest req,HttpServletResponse res)throws ServletException,IOException{
res.setContentType("text/html");
PrintWriter pw=res.getWriter();
pw.println("Inside Test Servlet..");
pw.println("The date is "+new java.util.Date());

try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
pw.println("the driver class is loaded");

con = DriverManager.getConnection("jdbc:mysql:///sun","root","");
pw.println("connection is established");

if(con!=null)
System.out.println("Successfully connected to MySQL server using TCP/IP...");
stmt=con.createStatement();
rs=stmt.executeQuery("Select * from employee");

while(rs.next()){
pw.print(rs.getString(1)+"\t");
pw.println(rs.getString(2));
}


} catch(Exception e) {
pw.println("Error Message -->"+e.getMessage());
pw.println("Error -->"+e);

//Error Message -->com.mysql.jdbc.Driver
}

pw.close();

}
}
Output on the web browser:

Inside Test Servlet.. The date is Fri Nov 05 00:58:46 EST 2004
Error Message -->com.mysql.jdbc.Driver
Error -->java.lang.ClassNotFoundException: com.mysql.jdbc.Driver

I’m using mysql-connector-java-3.0.15-ga. But, ironically I can query the database from a standalone Java Application.

In case you have any suggestion pl. post a reply.

Regards,
Kunal Jaggi
SCJP
17 years ago
Thanks Colin!! It's working fine now....
Regards,
Kunal Jaggi
SCJP2
My <install_dir>/conf/web.xml file goes like this:

----------------------------------------------------------------------
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
version="2.4">

<!-- ======================== Introduction ============================== -->
<!-- This document defines default values for *all* web applications -->
<!-- loaded into this instance of Tomcat. As each application is -->
<!-- deployed, this file is processed, followed by the -->
<!-- "/WEB-INF/web.xml" deployment descriptor from your own -->
<!-- applications. -->
<!-- -->
<!-- WARNING: Do not configure application-specific resources here! -->
<!-- They should go in the "/WEB-INF/web.xml" file in your application. -->


<!-- ================== Built In Servlet Definitions ==================== -->


<!-- The default servlet for all web applications, that serves static -->
<!-- resources. It processes all requests that are not mapped to other -->
<!-- servlets with servlet mappings (defined either here or in your own -->
<!-- web.xml file. This servlet supports the following initialization -->
<!-- parameters (default values are in square brackets): -->
<!-- -->
<!-- debug Debugging detail level for messages logged -->
<!-- by this servlet. [0] -->
<!-- -->
<!-- input Input buffer size (in bytes) when reading -->
<!-- resources to be served. [2048] -->
<!-- -->
<!-- listings Should directory listings be produced if there -->
<!-- is no welcome file in this directory? [true] -->
<!-- -->
<!-- output Output buffer size (in bytes) when writing -->
<!-- resources to be served. [2048] -->
<!-- -->
<!-- readonly Is this context "read only", so HTTP -->
<!-- commands like PUT and DELETE are -->
<!-- rejected? [true] -->
<!-- -->
<!-- readmeFile File name to display with the directory -->
<!-- contents. [null] -->
<!-- -->
<!-- For directory listing customization. Checks localXsltFile, then -->
<!-- globalXsltFile, then defaults to original behavior. -->
<!-- -->
<!-- localXsltFile Make directory listings an XML doc and -->
<!-- pass the result to this style sheet residing -->
<!-- in that directory. This overrides -->
<!-- globalXsltFile[null] -->
<!-- -->
<!-- globalXsltFile Site wide configuration version of -->
<!-- localXsltFile This argument is expected -->
<!-- to be a physical file. [null] -->
<!-- -->
<!-- -->

<servlet>
<servlet-name>default</servlet-name>
<servlet-class>
org.apache.catalina.servlets.DefaultServlet
</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>0</param-value>
</init-param>
<init-param>
<param-name>listings</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>


<!-- The "invoker" servlet, which executes anonymous servlet classes -->
<!-- that have not been defined in a web.xml file. Traditionally, this -->
<!-- servlet is mapped to the URL pattern "/servlet/*", but you can map -->
<!-- it to other patterns as well. The extra path info portion of such a -->
<!-- request must be the fully qualified class name of a Java class that -->
<!-- implements Servlet (or extends HttpServlet), or the servlet name -->
<!-- of an existing servlet definition. This servlet supports the -->
<!-- following initialization parameters (default values are in square -->
<!-- brackets): -->
<!-- -->
<!-- debug Debugging detail level for messages logged -->
<!-- by this servlet. [0] -->

<!--
<servlet>
<servlet-name>invoker</servlet-name>
<servlet-class>
org.apache.catalina.servlets.InvokerServlet
</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>0</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
-->


<!-- The JSP page compiler and execution servlet, which is the mechanism -->
<!-- used by Tomcat to support JSP pages. Traditionally, this servlet -->
<!-- is mapped to the URL pattern "*.jsp". This servlet supports the -->
<!-- following initialization parameters (default values are in square -->
<!-- brackets): -->
<!-- -->
<!-- checkInterval If development is false and reloading is true, -->
<!-- background compiles are enabled. checkInterval -->
<!-- is the time in seconds between checks to see -->
<!-- if a JSP page needs to be recompiled. [300] -->
<!-- -->
<!-- compiler Which compiler Ant should use to compile JSP -->
<!-- pages. See the Ant documentation for more -->
<!-- information. [javac] -->
<!-- -->
<!-- classdebuginfo Should the class file be compiled with -->
<!-- debugging information? [true] -->
<!-- -->
<!-- classpath What class path should I use while compiling -->
<!-- generated servlets? [Created dynamically -->
<!-- based on the current web application] -->
<!-- -->
<!-- development Is Jasper used in development mode (will check -->
<!-- for JSP modification on every access)? [true] -->
<!-- -->
<!-- enablePooling Determines whether tag handler pooling is -->
<!-- enabled [true] -->
<!-- -->
<!-- fork Tell Ant to fork compiles of JSP pages so that -->
<!-- a separate JVM is used for JSP page compiles -->
<!-- from the one Tomcat is running in. [true] -->
<!-- -->
<!-- ieClassId The class-id value to be sent to Internet -->
<!-- Explorer when using <jsp lugin> tags. -->
<!-- [clsid:8AD9C840-044E-11D1-B3E9-00805F499D93] -->
<!-- -->
<!-- javaEncoding Java file encoding to use for generating java -->
<!-- source files. [UTF8] -->
<!-- -->
<!-- keepgenerated Should we keep the generated Java source code -->
<!-- for each page instead of deleting it? [true] -->
<!-- -->
<!-- mappedfile Should we generate static content with one -->
<!-- print statement per input line, to ease -->
<!-- debugging? [true] -->
<!-- -->
<!-- trimSpaces Should white spaces in template text between -->
<!-- actions or directives be trimmed? [false] -->
<!-- -->
<!-- reloading Should Jasper check for modified JSPs? [true] -->
<!-- -->
<!-- suppressSmap Should the generation of SMAP info for JSR45 -->
<!-- debugging be suppressed? [false] -->
<!-- -->
<!-- dumpSmap Should the SMAP info for JSR45 debugging be -->
<!-- dumped to a file? [false] -->
<!-- False if suppressSmap is true -->
<!-- -->
<!-- genStrAsCharArray Should text strings be generated as char -->
<!-- arrays, to improve performance in some cases? -->
<!-- [false] -->
<!-- -->
<!-- errorOnUseBeanInvalidClassAttribute -->
<!-- Should Jasper issue an error when the value of -->
<!-- the class attribute in an useBean action is -->
<!-- not a valid bean class? [true] -->
<!-- -->
<!-- scratchdir What scratch directory should we use when -->
<!-- compiling JSP pages? [default work directory -->
<!-- for the current web application] -->
<!-- -->
<!-- xpoweredBy Determines whether X-Powered-By response -->
<!-- header is added by generated servlet [false] -->
<!-- -->
<!-- If you wish to use Jikes to compile JSP pages: -->
<!-- Set the init parameter "compiler" to "jikes". Define -->
<!-- the property "-Dbuild.compiler.emacs=true" when starting Tomcat -->
<!-- by adding the above to your CATALINA_OPTS environment variable. -->
<!-- If you get an error reporting that jikes can't use UTF8 encoding, -->
<!-- try setting the init parameter "javaEncoding" to "ISO-8859-1". -->

<servlet>
<servlet-name>jsp</servlet-name>
<servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
<init-param>
<param-name>fork</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>xpoweredBy</param-name>
<param-value>false</param-value>
</init-param>
<load-on-startup>3</load-on-startup>
</servlet>


<!-- Server Side Includes processing servlet, which processes SSI -->
<!-- directives in HTML pages consistent with similar support in web -->
<!-- servers like Apache. Traditionally, this servlet is mapped to the -->
<!-- URL pattern "*.shtml". This servlet supports the following -->
<!-- initialization parameters (default values are in square brackets): -->
<!-- -->
<!-- buffered Should output from this servlet be buffered? -->
<!-- (0=false, 1=true) [0] -->
<!-- -->
<!-- debug Debugging detail level for messages logged -->
<!-- by this servlet. [0] -->
<!-- -->
<!-- expires The number of seconds before a page with SSI -->
<!-- directives will expire. [No default] -->
<!-- -->
<!-- isVirtualWebappRelative -->
<!-- Should "virtual" paths be interpreted as -->
<!-- relative to the context root, instead of -->
<!-- the server root? (0=false, 1=true) [0] -->
<!-- -->
<!-- -->
<!-- IMPORTANT: To use the SSI servlet, you also need to rename the -->
<!-- $CATALINA_HOME/server/lib/servlets-ssi.renametojar file -->
<!-- to $CATALINA_HOME/server/lib/servlets-ssi.jar -->

<!--
<servlet>
<servlet-name>ssi</servlet-name>
<servlet-class>
org.apache.catalina.ssi.SSIServlet
</servlet-class>
<init-param>
<param-name>buffered</param-name>
<param-value>1</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>0</param-value>
</init-param>
<init-param>
<param-name>expires</param-name>
<param-value>666</param-value>
</init-param>
<init-param>
<param-name>isVirtualWebappRelative</param-name>
<param-value>0</param-value>
</init-param>
<load-on-startup>4</load-on-startup>
</servlet>
-->


<!-- Common Gateway Includes (CGI) processing servlet, which supports -->
<!-- execution of external applications that conform to the CGI spec -->
<!-- requirements. Typically, this servlet is mapped to the URL pattern -->
<!-- "/cgi-bin/*", which means that any CGI applications that are -->
<!-- executed must be present within the web application. This servlet -->
<!-- supports the following initialization parameters (default values -->
<!-- are in square brackets): -->
<!-- -->
<!-- cgiPathPrefix The CGI search path will start at -->
<!-- webAppRootDir + File.separator + this prefix. -->
<!-- [WEB-INF/cgi] -->
<!-- -->
<!-- clientInputTimeout The time (in milliseconds) to wait for input -->
<!-- from the browser before assuming that there -->
<!-- is none. [100] -->
<!-- -->
<!-- debug Debugging detail level for messages logged -->
<!-- by this servlet. [0] -->
<!-- -->
<!-- executable Name of the exectuable used to run the script. -->
<!-- [perl] -->
<!-- -->
<!-- parameterEncoding Name of parameter encoding to be used with CGI -->
<!-- servlet. -->
<!-- [System.getProperty("file.encoding","UTF-8")] -->
<!-- -->
<!-- IMPORTANT: To use the CGI servlet, you also need to rename the -->
<!-- $CATALINA_HOME/server/lib/servlets-cgi.renametojar file -->
<!-- to $CATALINA_HOME/server/lib/servlets-cgi.jar -->

<!--
<servlet>
<servlet-name>cgi</servlet-name>
<servlet-class>org.apache.catalina.servlets.CGIServlet</servlet-class>
<init-param>
<param-name>clientInputTimeout</param-name>
<param-value>100</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>6</param-value>
</init-param>
<init-param>
<param-name>cgiPathPrefix</param-name>
<param-value>WEB-INF/cgi</param-value>
</init-param>
<load-on-startup>5</load-on-startup>
</servlet>
-->


<!-- ================ Built In Servlet Mappings ========================= -->


<!-- The servlet mappings for the built in servlets defined above. Note -->
<!-- that, by default, the CGI and SSI servlets are *not* mapped. You -->
<!-- must uncomment these mappings (or add them to your application's own -->
<!-- web.xml deployment descriptor) to enable these services -->

<!-- The mapping for the default servlet -->
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>

<!-- The mapping for the invoker servlet -->
<!--
<servlet-mapping>
<servlet-name>invoker</servlet-name>
<url-pattern>/servlet/*</url-pattern>
</servlet-mapping>
-->

<!-- The mapping for the JSP servlet -->
<servlet-mapping>
<servlet-name>jsp</servlet-name>
<url-pattern>*.jsp</url-pattern>
</servlet-mapping>

<servlet-mapping>
<servlet-name>jsp</servlet-name>
<url-pattern>*.jspx</url-pattern>
</servlet-mapping>

<!-- The mapping for the SSI servlet -->
<!--
<servlet-mapping>
<servlet-name>ssi</servlet-name>
<url-pattern>*.shtml</url-pattern>
</servlet-mapping>
-->

<!-- The mapping for the CGI Gateway servlet -->

<!--
<servlet-mapping>
<servlet-name>cgi</servlet-name>
<url-pattern>/cgi-bin/*</url-pattern>
</servlet-mapping>
-->


<!-- ==================== Default Session Configuration ================= -->
<!-- You can set the default session timeout (in minutes) for all newly -->
<!-- created sessions by modifying the value below. -->

<session-config>
<session-timeout>30</session-timeout>
</session-config>


<!-- ===================== Default MIME Type Mappings =================== -->
<!-- When serving static resources, Tomcat will automatically generate -->
<!-- a "Content-Type" header based on the resource's filename extension, -->
<!-- based on these mappings. Additional mappings can be added here (to -->
<!-- apply to all web applications), or in your own application's web.xml -->
<!-- deployment descriptor. -->

<mime-mapping>
<extension>abs</extension>
<mime-type>audio/x-mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ai</extension>
<mime-type>application/postscript</mime-type>
</mime-mapping>
<mime-mapping>
<extension>aif</extension>
<mime-type>audio/x-aiff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>aifc</extension>
<mime-type>audio/x-aiff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>aiff</extension>
<mime-type>audio/x-aiff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>aim</extension>
<mime-type>application/x-aim</mime-type>
</mime-mapping>
<mime-mapping>
<extension>art</extension>
<mime-type>image/x-jg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>asf</extension>
<mime-type>video/x-ms-asf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>asx</extension>
<mime-type>video/x-ms-asf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>au</extension>
<mime-type>audio/basic</mime-type>
</mime-mapping>
<mime-mapping>
<extension>avi</extension>
<mime-type>video/x-msvideo</mime-type>
</mime-mapping>
<mime-mapping>
<extension>avx</extension>
<mime-type>video/x-rad-screenplay</mime-type>
</mime-mapping>
<mime-mapping>
<extension>bcpio</extension>
<mime-type>application/x-bcpio</mime-type>
</mime-mapping>
<mime-mapping>
<extension>bin</extension>
<mime-type>application/octet-stream</mime-type>
</mime-mapping>
<mime-mapping>
<extension>bmp</extension>
<mime-type>image/bmp</mime-type>
</mime-mapping>
<mime-mapping>
<extension>body</extension>
<mime-type>text/html</mime-type>
</mime-mapping>
<mime-mapping>
<extension>cdf</extension>
<mime-type>application/x-cdf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>cer</extension>
<mime-type>application/x-x509-ca-cert</mime-type>
</mime-mapping>
<mime-mapping>
<extension>class</extension>
<mime-type>application/java</mime-type>
</mime-mapping>
<mime-mapping>
<extension>cpio</extension>
<mime-type>application/x-cpio</mime-type>
</mime-mapping>
<mime-mapping>
<extension>csh</extension>
<mime-type>application/x-csh</mime-type>
</mime-mapping>
<mime-mapping>
<extension>css</extension>
<mime-type>text/css</mime-type>
</mime-mapping>
<mime-mapping>
<extension>dib</extension>
<mime-type>image/bmp</mime-type>
</mime-mapping>
<mime-mapping>
<extension>doc</extension>
<mime-type>application/msword</mime-type>
</mime-mapping>
<mime-mapping>
<extension>dtd</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
<mime-mapping>
<extension>dv</extension>
<mime-type>video/x-dv</mime-type>
</mime-mapping>
<mime-mapping>
<extension>dvi</extension>
<mime-type>application/x-dvi</mime-type>
</mime-mapping>
<mime-mapping>
<extension>eps</extension>
<mime-type>application/postscript</mime-type>
</mime-mapping>
<mime-mapping>
<extension>etx</extension>
<mime-type>text/x-setext</mime-type>
</mime-mapping>
<mime-mapping>
<extension>exe</extension>
<mime-type>application/octet-stream</mime-type>
</mime-mapping>
<mime-mapping>
<extension>gif</extension>
<mime-type>image/gif</mime-type>
</mime-mapping>
<mime-mapping>
<extension>gtar</extension>
<mime-type>application/x-gtar</mime-type>
</mime-mapping>
<mime-mapping>
<extension>gz</extension>
<mime-type>application/x-gzip</mime-type>
</mime-mapping>
<mime-mapping>
<extension>hdf</extension>
<mime-type>application/x-hdf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>hqx</extension>
<mime-type>application/mac-binhex40</mime-type>
</mime-mapping>
<mime-mapping>
<extension>htc</extension>
<mime-type>text/x-component</mime-type>
</mime-mapping>
<mime-mapping>
<extension>htm</extension>
<mime-type>text/html</mime-type>
</mime-mapping>
<mime-mapping>
<extension>html</extension>
<mime-type>text/html</mime-type>
</mime-mapping>
<mime-mapping>
<extension>hqx</extension>
<mime-type>application/mac-binhex40</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ief</extension>
<mime-type>image/ief</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jad</extension>
<mime-type>text/vnd.sun.j2me.app-descriptor</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jar</extension>
<mime-type>application/java-archive</mime-type>
</mime-mapping>
<mime-mapping>
<extension>java</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jnlp</extension>
<mime-type>application/x-java-jnlp-file</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jpe</extension>
<mime-type>image/jpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jpeg</extension>
<mime-type>image/jpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jpg</extension>
<mime-type>image/jpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>js</extension>
<mime-type>text/javascript</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jsf</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jspf</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
<mime-mapping>
<extension>kar</extension>
<mime-type>audio/x-midi</mime-type>
</mime-mapping>
<mime-mapping>
<extension>latex</extension>
<mime-type>application/x-latex</mime-type>
</mime-mapping>
<mime-mapping>
<extension>m3u</extension>
<mime-type>audio/x-mpegurl</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mac</extension>
<mime-type>image/x-macpaint</mime-type>
</mime-mapping>
<mime-mapping>
<extension>man</extension>
<mime-type>application/x-troff-man</mime-type>
</mime-mapping>
<mime-mapping>
<extension>me</extension>
<mime-type>application/x-troff-me</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mid</extension>
<mime-type>audio/x-midi</mime-type>
</mime-mapping>
<mime-mapping>
<extension>midi</extension>
<mime-type>audio/x-midi</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mif</extension>
<mime-type>application/x-mif</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mov</extension>
<mime-type>video/quicktime</mime-type>
</mime-mapping>
<mime-mapping>
<extension>movie</extension>
<mime-type>video/x-sgi-movie</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mp1</extension>
<mime-type>audio/x-mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mp2</extension>
<mime-type>audio/x-mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mp3</extension>
<mime-type>audio/x-mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mpa</extension>
<mime-type>audio/x-mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mpe</extension>
<mime-type>video/mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mpeg</extension>
<mime-type>video/mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mpega</extension>
<mime-type>audio/x-mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mpg</extension>
<mime-type>video/mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mpv2</extension>
<mime-type>video/mpeg2</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ms</extension>
<mime-type>application/x-wais-source</mime-type>
</mime-mapping>
<mime-mapping>
<extension>nc</extension>
<mime-type>application/x-netcdf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>oda</extension>
<mime-type>application/oda</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pbm</extension>
<mime-type>image/x-portable-bitmap</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pct</extension>
<mime-type>image/pict</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pdf</extension>
<mime-type>application/pdf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pgm</extension>
<mime-type>image/x-portable-graymap</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pic</extension>
<mime-type>image/pict</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pict</extension>
<mime-type>image/pict</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pls</extension>
<mime-type>audio/x-scpls</mime-type>
</mime-mapping>
<mime-mapping>
<extension>png</extension>
<mime-type>image/png</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pnm</extension>
<mime-type>image/x-portable-anymap</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pnt</extension>
<mime-type>image/x-macpaint</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ppm</extension>
<mime-type>image/x-portable-pixmap</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ppt</extension>
<mime-type>application/powerpoint</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ps</extension>
<mime-type>application/postscript</mime-type>
</mime-mapping>
<mime-mapping>
<extension>psd</extension>
<mime-type>image/x-photoshop</mime-type>
</mime-mapping>
<mime-mapping>
<extension>qt</extension>
<mime-type>video/quicktime</mime-type>
</mime-mapping>
<mime-mapping>
<extension>qti</extension>
<mime-type>image/x-quicktime</mime-type>
</mime-mapping>
<mime-mapping>
<extension>qtif</extension>
<mime-type>image/x-quicktime</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ras</extension>
<mime-type>image/x-cmu-raster</mime-type>
</mime-mapping>
<mime-mapping>
<extension>rgb</extension>
<mime-type>image/x-rgb</mime-type>
</mime-mapping>
<mime-mapping>
<extension>rm</extension>
<mime-type>application/vnd.rn-realmedia</mime-type>
</mime-mapping>
<mime-mapping>
<extension>roff</extension>
<mime-type>application/x-troff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>rtf</extension>
<mime-type>application/rtf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>rtx</extension>
<mime-type>text/richtext</mime-type>
</mime-mapping>
<mime-mapping>
<extension>sh</extension>
<mime-type>application/x-sh</mime-type>
</mime-mapping>
<mime-mapping>
<extension>shar</extension>
<mime-type>application/x-shar</mime-type>
</mime-mapping>
<mime-mapping>
<extension>smf</extension>
<mime-type>audio/x-midi</mime-type>
</mime-mapping>
<mime-mapping>
<extension>sit</extension>
<mime-type>application/x-stuffit</mime-type>
</mime-mapping>
<mime-mapping>
<extension>snd</extension>
<mime-type>audio/basic</mime-type>
</mime-mapping>
<mime-mapping>
<extension>src</extension>
<mime-type>application/x-wais-source</mime-type>
</mime-mapping>
<mime-mapping>
<extension>sv4cpio</extension>
<mime-type>application/x-sv4cpio</mime-type>
</mime-mapping>
<mime-mapping>
<extension>sv4crc</extension>
<mime-type>application/x-sv4crc</mime-type>
</mime-mapping>
<mime-mapping>
<extension>swf</extension>
<mime-type>application/x-shockwave-flash</mime-type>
</mime-mapping>
<mime-mapping>
<extension>t</extension>
<mime-type>application/x-troff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tar</extension>
<mime-type>application/x-tar</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tcl</extension>
<mime-type>application/x-tcl</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tex</extension>
<mime-type>application/x-tex</mime-type>
</mime-mapping>
<mime-mapping>
<extension>texi</extension>
<mime-type>application/x-texinfo</mime-type>
</mime-mapping>
<mime-mapping>
<extension>texinfo</extension>
<mime-type>application/x-texinfo</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tif</extension>
<mime-type>image/tiff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tiff</extension>
<mime-type>image/tiff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tr</extension>
<mime-type>application/x-troff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tsv</extension>
<mime-type>text/tab-separated-values</mime-type>
</mime-mapping>
<mime-mapping>
<extension>txt</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ulw</extension>
<mime-type>audio/basic</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ustar</extension>
<mime-type>application/x-ustar</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xbm</extension>
<mime-type>image/x-xbitmap</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xht</extension>
<mime-type>application/xhtml+xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xhtml</extension>
<mime-type>application/xhtml+xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xml</extension>
<mime-type>text/xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xpm</extension>
<mime-type>image/x-xpixmap</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xsl</extension>
<mime-type>text/xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xwd</extension>
<mime-type>image/x-xwindowdump</mime-type>
</mime-mapping>
<mime-mapping>
<extension>wav</extension>
<mime-type>audio/x-wav</mime-type>
</mime-mapping>
<mime-mapping>
<extension>svg</extension>
<mime-type>image/svg+xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>svgz</extension>
<mime-type>image/svg+xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>vsd</extension>
<mime-type>application/x-visio</mime-type>
</mime-mapping>
<mime-mapping>
<!-- Wireless Bitmap -->
<extension>wbmp</extension>
<mime-type>image/vnd.wap.wbmp</mime-type>
</mime-mapping>
<mime-mapping>
<!-- WML Source -->
<extension>wml</extension>
<mime-type>text/vnd.wap.wml</mime-type>
</mime-mapping>
<mime-mapping>
<!-- Compiled WML -->
<extension>wmlc</extension>
<mime-type>application/vnd.wap.wmlc</mime-type>
</mime-mapping>
<mime-mapping>
<!-- WML Script Source -->
<extension>wmls</extension>
<mime-type>text/vnd.wap.wmlscript</mime-type>
</mime-mapping>
<mime-mapping>
<!-- Compiled WML Script -->
<extension>wmlscriptc</extension>
<mime-type>application/vnd.wap.wmlscriptc</mime-type>
</mime-mapping>
<mime-mapping>
<extension>wrl</extension>
<mime-type>x-world/x-vrml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>Z</extension>
<mime-type>application/x-compress</mime-type>
</mime-mapping>
<mime-mapping>
<extension>z</extension>
<mime-type>application/x-compress</mime-type>
</mime-mapping>
<mime-mapping>
<extension>zip</extension>
<mime-type>application/zip</mime-type>
</mime-mapping>


<!-- ==================== Default Welcome File List ===================== -->
<!-- When a request URI refers to a directory, the default servlet looks -->
<!-- for a "welcome file" within that directory and, if present, -->
<!-- to the corresponding resource URI for display. If no welcome file -->
<!-- is present, the default servlet either serves a directory listing, -->
<!-- or returns a 404 status, depending on how it is configured. -->
<!-- -->
<!-- If you define welcome files in your own application's web.xml -->
<!-- deployment descriptor, that list *replaces* the list configured -->
<!-- here, so be sure that you include any of the default values that -->
<!-- you wish to include. -->

<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>

</web-app>
------------------------------------------------------------------
Please see if anybody can figure out any typo, although I can run my JSP code but unable to run servlets.
Regards,
Kunal Jaggi
SCJP
Hi Colin!!
Thanks for posting the message.
I want to make some points clear.

1. I'm not using any package for my servlets.
2. The web.xml file that you have indicated is the Deployment descriptor which every web app has one. But, the web.xml file that I have pointed out resides in the conf folder inside the Tomcat Inst. directory.

Regards,
Kunal Jaggi
SCJP2
I�m using Win2K and Mandrake Linux 9.0. I have successfully installed Apache Tomcat 5 on both these Operating Systems. I have set the following environment variables appropriately:
1.PATH
2.CLASSPATH
3.JAVA_HOME
4.CATALINA_HOME


After this I tried to configure the invoker servlet. To enable the invoker servlet, I tried to uncomment the following servlet and servlet-mapping elements in install_dir/conf/web.xml.
<servlet>
<servlet-name>invoker</servlet-name>
<servlet-class>
org.apache.catalina.servlets.InvokerServlet
</servlet-class>
...
</servlet>

...

<servlet-mapping>
<servlet-name>invoker</servlet-name>
<url-pattern>/servlet/*</url-pattern>
</servlet-mapping>

But there is no <servlet> tag available.

I can compile my servlet code and run JSP pages. But, whenever I try to run a servlet there is an error saying that default context �/� not found. How do I go about doing this?
Hi!!
I want to take the SCWCD 1.4 certification. I checked out the market (Calcutta, India), the book of the latest version (i-e 1.4) is not available. When the book is going to be available in the Indian Market? There is no point buying the book of older version.


I also want to change my public display name. How do I go about it???

Regards,
Kunal Jaggi
SCJP
I am a Sun Certified Java 2 Programmer. I want to the the SCWCD1.4 exam. Is there any book available in the Indian market for the same.
Bye.....
Kunal Jaggi
How About the Exam Objectives of SCWCD 1.4???
To what extent do u think that the exam objectives would be changed?
Also, SCJP 1.2 expires in Dec. 04 , does this mean that I need to take the SCWCD exam prior to that, since SCJp is a prerequirement for SCWCD?
[ February 28, 2004: Message edited by: kunalnimc Jaggi ]
I am keen to take the SCWCD Exam. I have viewed the exam objectives at the Sun site : http://suned.sun.com/US/certification/java/java_web.html. I have learned that the exam objectived might be changed. Is this true? if yes how long it might take for the new exam to come in the market.
Kunal Jaggi
SCJP2 (89%)