How can i do the servlet to servlet communicaion usingservlet context

public void doGet(HttpServletRequest request, HttpServletResponse response)
               throws ServletException, IOException {
          response.setContentType("text/html");
          //ServletContext context = null;
          PrintWriter out = response.getWriter();
          RequestDispatcher rd=request.getRequestDispatcher("/second");
          rd.forward(request,response);
          out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
          out.println("<HTML>");
          out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
          out.println(" <BODY>");
          /*out.print(" This is ");
          out.print(this.getClass());
          out.println(", using the GET method");*/
          out.println(" </BODY>");
          out.println("</HTML>");
          out.flush();
          out.close();
Here I have used request.getRequestDispatcher("/second ").. it wil cal the second servlet...
But how can i cal the second servlet using context.requestDispatcher(" ") inside the paranthesis what i wil give?
plz some one help me..

request.getRequestDispatcher("/second ") is the same as context.requestDispatcher("/second ") .
The requestDispatcher from the request object can take a relative path but if the path starts with a '/' it is interpreted as relative to the context root. The RequestDispatcher from the context can only take paths that start with '/' and are relative to the context root.
http://java.sun.com/j2ee/1.4/docs/api/javax/servlet/ServletRequest.html#getRequestDispatcher(java.lang.String)

Similar Messages

How can i know the no of servlets

how can i know the no of servlets present in single application

you webapp (servlet) can create a static variable. when a request has been made, you increment this number...provides a request parameter (http param) that will return this count number.

How can we pass the control from servlet to portlet ?

Hi,
we use PortletRequestDispatcher.include method to call the servlet.
In my servlet, I have the following form information.
out.println("<form method=\"post\" action=\"http://abc 40acce5.3a.com/portal/dt?display=Command\">");
out.println("Enter value: ");
out.println("<input type=\"text\" name=\"UserName\" value=\"\">");
out.println("<center> "); out.println("<input type=\"submit\" value=\"Go Back Portlet\"> ");
out.println("</center> ");
out.println("</form>");
When user click the submit button, the servlet will go to portlet first, then go to another page.
is the url (action="http://abc40acce5.3a.com/portal/dt?display=Command) correct ?
if not, what url we should use ?
Can you help ?
Thanks!

Oh I thought that you have selection-screen and again you are working on dialog programming.
if you want to use select-option directly in module pool then it is not possible.
but you can do other way.
create two varaiables
data : v_kun_low like kna1-kunnr,
v_kun_high like kna1-kunnr.
use these two variables in layout ,let user knows that he can not give options like gt,lt,eq ,it will be always BT.
and also when you see normal report program,you can use multiple values in either low or high,but here it is not possibel.
use can enter only low value and high value.
when you come to program point of view
declare one range
ranges r_kunnr for kna1-kunnr.
do the coding like
r_kunnr-low = v_kun_low.
r_kunnr-high = v_kun_high.
r_kunnr-options = 'BT'.
r_kunnr-sign = 'I'.
append r_kunnr.
now you can use r_kunnr in select query ,it will work like select-option.
other than this there is no option.
Thanks
Seshu

How can I display the HTML page from servlet which is called by an applet

How can I display the HTML page from servlet which is called by an
applet using the doPost method. If I print the response i can able to see the html document. How I can display it in the browser.
I am calling my struts action class from the applet. I want to show the response in the same browser.
Code samples will be appreciated.

hi
I got one way for this .
call a javascript in showDocument() to submit the form

How can I call the jFreeChart to plot graph and get the result in Servlet?

I want to use jFreeChart to plot time series graph, and then output the result in Servlet. How can I call the jFreeChart to plot graph and get back the result? Any source code for example? Thanks a lot!!

Dave,
ServletDemo1 and others were not in the distribution that I got (jfreechart-0.9.4). I found them under the premium demos somewhere in com/refinery/chart/demo/premium, but could not compile. They're complaining, among other things, about missing classes/packages com.refinery.date.SerialDate and com.refinery.ui. Am I using a wrong version of jfreechart?
Thanks,
-Alla
There is a very simple servlet demo in the JFreeChart
distribution:
src/com/jrefinery/chart/demo/ServletDemo1.java
This simply sends back an image to the browser.
A second demo, which embeds the chart in an HTML page
is:
src/com/jrefinery/chart/demo/ServletDemo2.java
src/com/jrefinery/chart/demo/ServletDemo2ChartGenerator
java
...includes a time series chart as one of three
options.
Regards,
Dave Gilbert
JFreeChart Project Leader
http://www.object-refinery.com/jfreechart/index.html

How can i access the EJB from a Webdynpro

Dear all,
How can i access the ejb , from a webdynpro?.
Is there any way to do that?.
I want to write the entire code (business functions) within the EJB and i wan to access the entire methods from a WebDynpro Application.This is the situation.
Please help me to , resolve this problem.(Here im using JDBC Connection .. etc.).
I want to do the basic connection setting's and data retrieval part within the EJB and use that within the WebDynpro..
how can i seperate this two(i mean, i want to seperate the JDBC connections and WebDynpro,i dont want to hard code any connection parameters within the webdynpro code)
So that i want use that saet of particular function's in many webdynpro applications..
(i dont need any help regarding webservice way.)
If anyone can , please help me..
I tried that javabean class , manifest file , that way (importing javabean model).
but im getting errors.
I cant properly utilize that..
So please help me with steps regarding that,,
for javabean
and if any , for EJB also..
with regards
Kishor.G

HI,
Since webdynpros follows Model View Controller Architecture You can access EJBs in webdynpro(views/frontend) infact to connec to database uding JDBC you have to utilise EJB ( opening connection to database closing, and other Business functionality).See this link
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/unkown/web dynpro tutorial and sample applications.faq#q-7
<b>How to access the Car Rental Web Service?</b>
Regards,
RK

How can I change the setting to one appropriate to java1.2

Hello.
I am using WebLogic 4.5.1 .
and recently started to use JDK 1.2 instead of JDK 1.1.7.
So, I set [start]-[weblogic]-[Choose1.2JRE] in environment.
and then, if I execute T3Server, the message of
"javai.dll class path cannot be found " is displayed and the server is not
loaded.
However, javai.dll was in java1.1.X\bin.
I can assume that a setting is to java1.1.X.
--> How can I change the setting to one appropriate to java 1.2
It's my environment
ClassPath
.;c:\weblogic\classes;C:\weblogic\lib\weblogicaux.jar;C:\weblogic\license;c:
\weblogic;C:\weblogic\myserver\clientclasses;C:\weblogic\myserver\serverclas
ses;C:\weblogic\myserver\servletclasses;C:\weblogic\mssqlserver4\classes;c:\
weblogic\classes\boot;C:\weblogic\eval\cloudscape\lib\cloudscape.jar;c:\rmi-
iiop\lib\iioprt11.jar;c:\rmi-iiop\lib\iioprt.jar;c:\rmi-iiop\lib\rmiorb.jar;
C:\jsdk2.1\runner.jar;C:\jsdk2.1\servlet.jar
Path :
%SystemRoot%\system32;C:\jdk1.3bin;c:\weblogic;c:\weblogic\bin;
c:\;c:\bat;c:\util\;C:\jsdk2.0\bin
Hyung Gi Min

How can I set the data binding between Web Dynpro & Database table

Dear friend,
I am a beginner of Web Dynpro. I want to develop my simple project like these:
1. Create my own database table via Dictionary Project such as TAB_USER and have 3 fields: USER_ID, USER_NAME, USER_POSITION and I have already deployed & archived it.
2. Create my own Web Dynpro Project, and create the input fields as User ID, User name, User position and icon 'Save' on the selection screen and I have deployed it already.
For the process, I want to input data at the screen and save the data in the table, please give me the guide line like these:
1. How can I set the data binding between Web Dynpro and Database table ?
2. Are there any nescessary steps that I will concern for this case?
Sorry if my question is simple, I had try to find solution myself, but it not found
Thanks in advances,
SeMs

Hi,
You can write your own connection class for establishing the connection with DB.
Ex:
public class ConnectionClass {
static Connection con = null;
public static Connection getConnection() {
try{
Context ctx = new InitialContext();
DataSource ds = (DataSource) ctx.lookup("jdbc/TSPAGE");
con = ds.getConnection();
return con;
}catch(Exception e){
return null;
You can place the above class file in src folder and you can use this class in webdynpro.
You can have another UserInfo class for reading and writing the data into the DB .
Regards, Anilkumar
PS : Refer
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webas/java/simple java bean generator for database.pdf
Message was edited by: Anilkumar Vippagunta

How can i catch the jsp checking event ?

As we know, there are three parameters which is about checking in the weblogic.xml, pageCheckSeconds,*servlet-reload-check-secs*,*resource-reload-check-secs*, but how can i catch the checking event when the webapp is active.
The fellowing is my simple test, i deployed a webapp on a weblogic server instance, and it was actived. I wrote a simple bash shell to try to catch the event, but fail. i througnt it may be dependent on the webapp's stage mode. but i change the mode, and try again, it was fail too.
[weblogic@tdy218 ~]$ ls
getLastAccessTime.sh webapps
[weblogic@tdy218 ~]$ ./getLastAccessTime.sh ~/webapps/Test/login.jsp
The file's last access time is: 2011-05-22 11:10:21.000000000 +0800
The file's last access time is: 2011-05-22 11:10:21.000000000 +0800
The file's last access time is: 2011-05-22 11:10:21.000000000 +0800
The file's last access time is: 2011-05-22 11:10:21.000000000 +0800
The file's last access time is: 2011-05-22 11:10:21.000000000 +0800
The file's last access time is: 2011-05-22 11:10:21.000000000 +0800
The file's last access time is: 2011-05-22 11:10:21.000000000 +0800
[weblogic@tdy218 ~]$ ./getLastAccessTime.sh
/bea/wls924/user_projects/domains/base_domain/servers/AdminServer/stage/Test/Test/login.jsp
The file's last access time is: 2011-05-22 11:11:37.000000000 +0800
The file's last access time is: 2011-05-22 11:11:37.000000000 +0800
The file's last access time is: 2011-05-22 11:11:37.000000000 +0800
The file's last access time is: 2011-05-22 11:11:37.000000000 +0800
The file's last access time is: 2011-05-22 11:11:37.000000000 +0800
The file's last access time is: 2011-05-22 11:11:37.000000000 +0800
The file's last access time is: 2011-05-22 11:11:37.000000000 +0800
The file's last access time is: 2011-05-22 11:11:37.000000000 +0800
[weblogic@tdy218 ~]$ stat
/bea/wls924/user_projects/domains/base_domain/servers/AdminServer/stage/Test/Test/login.jsp
File: `/bea/wls924/user_projects/domains/base_domain/servers/AdminServer/stage/Test/Test/login.jsp'
Size: 634 Blocks: 8 IO Block: 4096 regular file
Device: 804h/2052d Inode: 583725 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 502/weblogic) Gid: ( 500/ bea)
Access: 2011-05-22 11:11:37.000000000 +0800
Modify: 2010-05-24 14:49:08.000000000 +0800
Change: 2011-05-22 11:10:21.000000000 +0800
The jsp file's last access time didn't changed in the past.
[weblogic@tdy218 ~]$ more getLastAccessTime.sh
#!/bin/bash
declare -i m=1
declare -i n=100
while [ $m -le $n ]; do
echo "The file's last access time is: $(stat -c %x $1)"
m=m+1
sleep 3
done
weblogic.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE weblogic-web-app PUBLIC "-//BEA Systems, Inc.//DTD Web Application 8.1//EN" "http://www.oracle.com/technology/weblogic/servers/wls810/dtd/weblogic810-web-jar.dtd">
<weblogic-web-app>
<jsp-descriptor>
<jsp-param>
<param-name>pageCheckSeconds</param-name>
<param-value>2</param-value>
</jsp-param>
</jsp-descriptor>
<container-descriptor>
<servlet-reload-check-secs>2</servlet-reload-check-secs>
<resource-reload-check-secs>2</resource-reload-check-secs>
</container-descriptor>
<context-root>/jdbc</context-root>
</weblogic-web-app>
env :
WebLogic 9.2 MP4、Redhat Linux AS 4 Update 8 x86.

I tested on WLS 11g ps2(10.3.3) which is running in Development Mode also, but it was the same as WLS 9.2 MP4.
During the weblogic server running, it don't check the application resources , but it will check the $Domain_Home/autodeploy directory every three seconds in Development Mode , the following is the result.
[weblogic@tdy218 ~]$ ./getLastAccessTime.sh /bea/wls924/user_projects/domains/base_domain/autodeploy
The file's last access time is: 2011-05-22 12:01:43.000000000 +0800
The file's last access time is: 2011-05-22 12:01:43.000000000 +0800
The file's last access time is: 2011-05-22 12:01:43.000000000 +0800
The file's last access time is: 2011-05-22 12:01:46.000000000 +0800
The file's last access time is: 2011-05-22 12:01:46.000000000 +0800
The file's last access time is: 2011-05-22 12:01:46.000000000 +0800
The file's last access time is: 2011-05-22 12:01:49.000000000 +0800
The file's last access time is: 2011-05-22 12:01:49.000000000 +0800
The file's last access time is: 2011-05-22 12:01:49.000000000 +0800
The file's last access time is: 2011-05-22 12:01:52.000000000 +0800
Ctrl + ^
[weblogic@tdy218 ~]$ ./getLastAccessTime.sh ~/webapps/Test
The file's last access time is: 2011-05-22 17:26:25.000000000 +0800
The file's last access time is: 2011-05-22 17:26:25.000000000 +0800
The file's last access time is: 2011-05-22 17:26:25.000000000 +0800
The file's last access time is: 2011-05-22 17:26:25.000000000 +0800
The file's last access time is: 2011-05-22 17:26:25.000000000 +0800
The file's last access time is: 2011-05-22 17:26:25.000000000 +0800
The file's last access time is: 2011-05-22 17:26:25.000000000 +0800
The file's last access time is: 2011-05-22 17:26:25.000000000 +0800
The file's last access time is: 2011-05-22 17:26:25.000000000 +0800
Ctrl + ^
[weblogic@tdy218 ~]$ ./getLastAccessTime.sh ~/webapps/Test/
insert.jsp login.jsp query.jsp tdy218.sql WEB-INF/
[weblogic@tdy218 ~]$ ./getLastAccessTime.sh ~/webapps/Test/login.jsp
The file's last access time is: 2011-05-22 11:44:31.000000000 +0800
The file's last access time is: 2011-05-22 11:44:31.000000000 +0800
The file's last access time is: 2011-05-22 11:44:31.000000000 +0800
The file's last access time is: 2011-05-22 11:44:31.000000000 +0800
The file's last access time is: 2011-05-22 11:44:31.000000000 +0800
The file's last access time is: 2011-05-22 11:44:31.000000000 +0800
The file's last access time is: 2011-05-22 11:44:31.000000000 +0800
The file's last access time is: 2011-05-22 11:44:31.000000000 +0800
The file's last access time is: 2011-05-22 11:44:31.000000000 +0800
The file's last access time is: 2011-05-22 11:44:31.000000000 +0800
Ctrl + ^
I set the frequency to every one seconds this time by using sleep method in my Bash Shell script.
#!/bin/bash
declare -i m=1
declare -i n=100
while [ $m -le $n ]; do
echo "The file's last access time is: $(stat -c %x $1)"
m=m+1
sleep 1
done

How can I Locate the correct filepath in a jsp page?

In http://localhost:8080/myweb/a.jsp, I will call a java bean file which is locate in http://localhost:8080/myweb/WEB-INF/classes/haha/DBConnection.class. This java file requires to read an external file which locates in http://localhost:8080/myweb/WEB-INF/classes/haha/db.txt
My question is how can I get the correct filepath in this environment?
inputStream = new BufferedReader(new FileReader(????????));
Only this will work
inputStream = new BufferedReader(new FileReader("D:\Program Files\Apache Software Foundation\Tomcat 5.5\db.txt"));
But no one will place the file here, and it is impossible to do this when upload to 3rd party hosting.
Any suggestion? thx.

Thx all, in a jsp page, calling this method is fine.
ServletContext s = getServletContext();
String a = s.getRealPath("/");
In a Servlet file, below method is ready to use:
String b = getServletConfig().getServletContext().getRealPath("/");
My problem is, I have a jsp page, which initialize a java bean , this java file is responsible for Database Connection, which will read the external text file to get the login, password and database name. So I won't need to recompile this file every time when I place in different platform with different configuration. I only need to edit the text file is ok.
But How can I get the absolute file path when that jsp page initialize that java bean file? Below is my error, any suggestions are thx.
package sql;
import java.sql.*;
import java.util.ArrayList;
import java.io.FileReader;
import java.io.BufferedReader;
import javax.servlet.*;
import javax.servlet.http.*;
public class DBConnection extends HttpServlet{
public String sql = null;
public Connection con = null;
public Statement statement = null;
public ResultSet rs = null;
private BufferedReader inputStream = null;
private static ArrayList<String> arr = new ArrayList<String>();
public DBConnection(){
    String fs = System.getProperty("file.separator");
    ServletContext s = getServletContext();
    String realpath = s.getRealPath("/");
    String filepath = realpath + "WEB-INF"+fs+"Properties"+fs+"db.txt";
    try{
      inputStream = new BufferedReader(new FileReader(filepath));
      String l;
      while ((l = inputStream.readLine()) != null) {
        arr.add(l);
      Class.forName("com.mysql.jdbc.Driver");
      this.con = DriverManager.getConnection("jdbc:mysql://localhost:3306/"+arr.get(0)+"?user=" +arr.get(1)+ "&password="+arr.get(2)+"&useUnicode=true&characterEncoding=utf-8");
      this.statement = this.con.createStatement();
    }catch (Exception e){
      System.err.println(e.getMessage());
    }finally{
}java.lang.NullPointerException
     javax.servlet.GenericServlet.getServletContext(GenericServlet.java:159)
     sql.DBConnection.<init>(DBConnection.java:20)
     html.ShowCategory.<init>(ShowCategory.java:17)
     org.apache.jsp.left_jsp._jspService(left_jsp.java:66)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

JAAS: How can I access the JAAS subject in an EJB?

Hello,
I try to understand the JAAS integration in J2EE 1.3.
I know:
J2EE defines a role-based container managed authorization for the web and ejb container. Roles, users and their relationship are defined in the realm.
JAAS has a more sophisticated policy-based authorisation model. Since J2EE1.3 I can define a realm using JAAS having the role-based authorization of the container managed security.
My question:
How can I access the JAAS subject object in an EJB or servlet to use the policy-based authorization?
Thank you for your answers
Peter

May be I should redefine my question:
If I use JAAS as J2EE-Realm, how can I receive the subject?
All JAAS-Tutorials contains code fragments like
LoginContext lc = new LoginContext("entryFoo");
    try {
        // authenticate the Subject
        lc.login();
        System.out.println("authentication successful");
        // get the authenticated Subject
        Subject subject = lc.getSubject();But if I use JAAS as J2EE-Realm the container creates the LoginContext.
Whom can I ask for the subject now?
There is no such method implemented in the EJBContext, the HttpServlet or HttpServletRequest!
Peter

How can I get the web application's context root?

I have a web application, which is defined in Tomcat's server.xml:
<Context path="/cbes" docBase="e:\work\GM\code\CBESCurrency" debug="0"
reloadable="true" crossContext="false"/>
And I hava a servlet in this web application.
How can I get the context root of the web application?
in this example: reture should be "cbes" or "/cbes"
how?
thanks alot.

getContextPath() in javax.servlet.http.HttpServletRequest

How can I calculate the request time ?

Hello,
How can I calculate the total consume time in each request ?
For example, I want to start calculating the time when I click on a Link or a button and the end time when it completed load the page !
Eric

You could use a filter like this one:
import java.io.*;
import java.net.*;
import java.util.*;
import java.text.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
public class TimeFilter implements Filter {
    // The filter configuration object we are associated with. If
    // this value is null, this filter instance is not currently
    // configured.
    private FilterConfig filterConfig = null;
    private static final boolean debug = false;
    private long start = 0;
    private long end = 0;
    public TimeFilter() {
    private void doBeforeProcessing(ServletRequest request, ServletResponse response)
    throws IOException, ServletException {
        if (debug) log("CalendarFilter:DoBeforeProcessing");
        System.out.print("In Filter ");
        this.start = System.currentTimeMillis();
        System.out.println((new java.util.Date()).toString() +
                           " start request ");
    private void doAfterProcessing(ServletRequest request, ServletResponse response)
    throws IOException, ServletException {
        if (debug) log("TimeFilter:DoAfterProcessing");
        System.out.println("Completion Time = " + (System.currentTimeMillis() - start));
     * @param request The servlet request we are processing
     * @param result The servlet response we are creating
     * @param chain The filter chain we are processing
     * @exception IOException if an input/output error occurs
     * @exception ServletException if a servlet error occurs
    public void doFilter(ServletRequest request, ServletResponse response,
    FilterChain chain)
    throws IOException, ServletException {
        if (debug) log("TimeFilter:doFilter()");
        doBeforeProcessing(request, response);
        Throwable problem = null;
        try {
            chain.doFilter(request, response);
        catch(Throwable t) {
            problem = t;
            t.printStackTrace();
        doAfterProcessing(request, response);
        // If there was a problem, we want to rethrow it if it is
        // a known type, otherwise log it.
        if (problem != null) {
            if (problem instanceof ServletException) throw (ServletException)problem;
            if (problem instanceof IOException) throw (IOException)problem;
            sendProcessingError(problem, response);
     * Return the filter configuration object for this filter.
    public FilterConfig getFilterConfig() {
        return (this.filterConfig);
     * Set the filter configuration object for this filter.
     * @param filterConfig The filter configuration object
    public void setFilterConfig(FilterConfig filterConfig) {
        this.filterConfig = filterConfig;
     * Destroy method for this filter
    public void destroy() {
     * Init method for this filter
    public void init(FilterConfig filterConfig) {
        this.filterConfig = filterConfig;
        if (filterConfig != null) {
            if (debug) {
                log("TimeFilter:Initializing filter");
     * Return a String representation of this object.
    public String toString() {
        if (filterConfig == null) return ("TimeFilter()");
        StringBuffer sb = new StringBuffer("TimeFilter(");
        sb.append(filterConfig);
        sb.append(")");
        return (sb.toString());
    private void sendProcessingError(Throwable t, ServletResponse response) {
        String stackTrace = getStackTrace(t);
        if(stackTrace != null && !stackTrace.equals("")) {
            try {
                response.setContentType("text/html");
                PrintStream ps = new PrintStream(response.getOutputStream());
                PrintWriter pw = new PrintWriter(ps);
                pw.print("<html>\n<head>\n</head>\n<body>\n"); //NOI18N
                // PENDING! Localize this for next official release
                pw.print("<h1>The resource did not process correctly</h1>\n<pre>\n");
                pw.print(stackTrace);
                pw.print("</pre></body>\n</html>"); //NOI18N
                pw.close();
                ps.close();
                response.getOutputStream().close();;
            catch(Exception ex){ }
        else {
            try {
                PrintStream ps = new PrintStream(response.getOutputStream());
                t.printStackTrace(ps);
                ps.close();
                response.getOutputStream().close();;
            catch(Exception ex){ }
    public static String getStackTrace(Throwable t) {
        String stackTrace = null;
        try {
            StringWriter sw = new StringWriter();
            PrintWriter pw = new PrintWriter(sw);
            t.printStackTrace(pw);
            pw.close();
            sw.close();
            stackTrace = sw.getBuffer().toString();
        catch(Exception ex) {}
        return stackTrace;
    public void log(String msg) {
        filterConfig.getServletContext().log(msg);
}and in the web.xml :
   <filter>
        <filter-name>TimeFilter</filter-name>
        <filter-class>
            com.filter.TimeFilter
        </filter>
    <filter-mapping>
        <filter-name>TimeFilter</filter-name>
        <url-pattern>/services/*</url-pattern>
    </filter-mapping >

How can we access the file/directory system in the server

Hi friends,
I have made a text editor attached with an audio player for my project.
Both text editor and audio player are implemented in applet and put in to a
jsp page using jsp:plugin. Text editor and player are separate applets running
in the same page and from same server.A client who is using this editor may
want to save the edited text files to the server as well as hear audio files from
directories in the server.
My question is how can we access the file/directory system in the server
like we do in the local machine.When the user cliks save or openfromserver button
in the editor, folder/files in the server must be displayed as we do with FileChooser.
I am using Apache Tomcat 5,wiindows 2000 server, jdk1.5.
manu

You can't access it directly. But your applet can make net connections to the server, and the server can provide that kind of functionality. Generally this is easiest by making HTTP connections and having the server provide the functionality via the web server. (So in your case, JSPs or servlets on the server would list/deliver/create/modify/delete files, and the applets would invoke those JSPs and servlets.

In Jsp TagLib how can I get the Attribute value (like JavaBean) in jsp

Dear Friends,
TagLib how can I get the Attribute value (like JavaBean) in jsp .
I do this thing.
public void setPageContext(PageContext p) {
          pc = p;
pc.setAttribute("id", new String("1") );
          pc.setAttribute("first_name",new String("Siddharth")); //,pc.SESSION_SCOPE);
          pc.setAttribute("last_name", new String("singh"));
but in Jsp
<td>
<%=pageContext.getAttribute("first_name"); %>
cause null is returing.
Pls HELP me
with regards
Siddharth Singh

First, there is no need to pass in the page context to the tag. It already is present. How you get to it depends on what type of tag:
Using [url http://java.sun.com/j2ee/1.4/docs/api/javax/servlet/jsp/tagext/SimpleTagSupport.html]SimpleTagSupport
public class MyTag extends SimpleTagSupport
public void doTag()
    PageContext pc = (PageContext)getJspContext();
    pc.setAttribute("first_name", "Siddharth");
    pc.setAttribute("last_name", "Singh");
    pc.setAttribute("id", "1");
}Using [url http://java.sun.com/j2ee/1.4/docs/api/javax/servlet/jsp/tagext/TagSupport.html]TagSupport or it's subclass [url http://java.sun.com/j2ee/1.4/docs/api/javax/servlet/jsp/tagext/BodyTagSupport.html]BodyTagSupport the page context is aleady declared as an implicit object:
public class MyTag extends TagSupport
public void doStartTag()
    pageContext.setAttribute("first_name", "Siddharth");
    pageContext.setAttribute("last_name", "Singh");
    pageContext.setAttribute("id", "1");
}In each case, this sort of thing should work:
<mytags:MyTag />
<%= pageContext.getAttribute("first_name") %>I

How can i do the servlet to servlet communicaion usingservlet context

Similar Messages

Maybe you are looking for