Clustered upload with java under tomcat

I have a web project using servlets and jsp..Almost finished most...But there is a some scalability problem which makes me think about...
People upload their pictures with their quota limitation...But when the server's storage area filled how am i going to forward my upload requests to the second server...
I heard about tomcat clustering thats allright...Maybe some user's web request will be handled by random server but how are the upload requests handled by the empty storaged server...
is it possible to manage or how?
thank you
thank you

yes in fact i tried to say someone must monitor free
space sometimes...Or there must be a way to learn how
much free space left from one server to the
others...so we may switch the upload requests
Doesn't sound like a good idea to me.
1. Find some way to monitor the space which will require an OS specific method.
2. Keep a list of boxes with free space
3. Switch to the next one when one is within 10% of full.
4. Send a email if you reach the last entry in the switch list (so no more entries after the current one.)
Although the above could be made to work if it was me I would work on changing the requirements of the system myself.

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Please help to upload with java servlet

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Hello newton ..
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No ocijdbc8 in java.library.path (with Netscape under Tomcat)

Hello,
my problem is the following: I must use the OCI-Driver of the Oracle-Client 8.1.7 because I use special PL/SQL-functions.
I get the error message:
java.lang.UnsatisfiedLinkError: no ocijdbc8 in java.library.path
when I try to start my servlet within netscape. Before this I'm starting the tomcat servlet engine and make the following path known to tomcat:
java.library.path=/usr/lib:/lib:/share/ams/oracle/ora817-SunOS-5.7/lib:/share/ams/oracle/ora817-SunOS-5.7/jdbc/lib:/share/ams/oracle/ora817-SunOS-5.7/lib64
In this line are the necessary paths to find the libocijdbc8.so library.
Why does the servlet still have problems to find the driver? In addition, I set my java.library.path within the servlet itself.
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Christian Schmidbauer

Hello:
libocijdbc9.so exists in the LD_LIBRARY_PATH. Tried
linking/copying classes12.zip from $TOMCAT_HOME/common/lib to $TOMCAT_HOME/webapps/APP_NAME/WEB-INF/lib causes the error:
java.lang.UnsatisfiedLinkError: /usr/apps/oracle/product/9.2.0/lib/libocijdbc9.so: ld.so.1: /usr/j2se/bin/java: fatal: /usr/apps/oracle/product/9.2.0/lib/libocijdbc9.so: wrong ELF class: ELFCLASS64
when the CATALINA_OPTS has -d32 and
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Thanks!

No ocijdbc8 in java.library.path (with Servlet under Tomcat)

Hello,
my problem is the following: I must use the OCI-Driver of the
Oracle-Client 8.1.7 because I use special PL/SQL-functions.
I get the error message:
java.lang.UnsatisfiedLinkError: no ocijdbc8 in java.library.path
when I try to start my servlet within netscape. Before this I'm
starting the tomcat servlet engine and make the following
path known to tomcat:
java.library.path=/usr/lib:/lib:/share/ams/oracle/ora817-SunOS-5.7/lib:/share/ams/oracle/ora817-SunOS-5.7/jdbc/lib:/share/ams/oracle/ora817-SunOS-5.7/lib64
In this line are the necessary paths to find the libocijdbc8.so
library.
Why does the servlet still have problems to find the driver?
In addition, I set my java.library.path within the servlet itself.
Do you know where is the crux of the matter?
Thank you,
Christian Schmidbauer

I'm not sure if this will help, but check to make sure your LD_LIBRARY_PATH environment variable is set (before starting Tomcat). I think this tells the Oracle classes where to find the .so files.

Are there any way to play movie from hard disc uploaded with java player?

I found quicktime player can export the movie as webpage versions, uses java to play the movie instead of quicktime player.
How can I do the same with iweb? From the webpage which quicktime generated said should insert some code to the head of page and something else, but how do I insert those codes to the page I create with iweb?
It said :
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The URL parameters must be modified if your media assets are served from a different location than your web page.
The movie URL parameters must always point to the reference movie (carsmoke.mov) rather than a source movie.
The reference movie must be kept in the same folder as the source movies.
Source movie names cannot be changed, but you can change the name of the reference movie (remember to change it in the HTML code as well).
Please note, to properly validate as XHTML, the <style> tag and the first <script> tag should be placed within your page's <head> tag."
Use this code in the <head> of your web page:
<script src="http://www.apple.com/library/quicktime/2.0/scripts/prototype.js" language="JavaScript" type="text/javascript"></script>
<script src="http://www.apple.com/library/quicktime/2.0/scripts/qtp_poster.js" language="JavaScript" type="text/javascript"></script>
<link href="http://www.apple.com/library/quicktime/2.0/stylesheets/qtp_poster.css" rel="StyleSheet" type="text/css" />
Use this code in the <body> of your web page:
" <<a href="carsmoke.mov" rel="qtposter">
<<img src="xxx.jpg" width="120" height="50" />
<</a> "
(I put < into << so it will not execute in this page...)
How to do these with iweb?
Message was edited by: kosmo.yin
Message was edited by: kosmo.yin

kosmo.yin wrote:
Are there any way to play blue ray disc on imac 27 under OSX system ?
Wonder what kind of software and blue ray player need to buy to play it.
Yes there is. See the link below:
http://eshop.macsales.com/shop/optical-drives/superdrives/

Transferring files from users mashines on the server. Uploading with applet

I'm trying to create applet that would do uploading of user file on the server.
I'm woundering, Is there any ways to use java applet to open a file on user mashine into a stream and transfer it thought socket into
server? Is there any good solution that do uploading with java applet? (I can't use CGI or PHP)
I just noticed that applets don't support FileInputStream. How could I in general get information from user file?
Ok. Thanks for ideas that you gave me. But there are useless. All that I can use is only HTTP. Unfortunately no FTP, no Web Start application.
looking for help

well, i don't work a lot with applets because of their inherent limitations. but my guess would be that you have to somehow use a signed applet. of course that doesn't help with the FileInputStream problem you are talking about.
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Capturing Video stream with JMF under LINUX??

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Cross-posted
http://forum.java.sun.com/post.jsp?forum=54&thread=456420&message=2083138&reply=true

Problems with sun's jdbc:odbc bridge under Tomcat 4.0

I keep getting this error when I try to access through jdbc:odbc sun's drive:
java.sql.Exception: [Microsoft][Administrador de controladores ODBC] No se encuentra el nomb
re del origen de datos y no se especific� ning�n controlador predeterminado
at sun.jdbc.odbc.JdbcOdbc.createSQLException(JdbcOdbc.java:6106)
at sun.jdbc.odbc.JdbcOdbc.standardError(JdbcOdbc.java:6263)
at sun.jdbc.odbc.JdbcOdbc.SQLDriverConnect(JdbcOdbc.java:2488)
at sun.jdbc.odbc.JdbcOdbcConnection.initialize(JdbcOdbcConnection.java:3
17)
at sun.jdbc.odbc.JdbcOdbcDriver.connect(JdbcOdbcDriver.java:160)
at java.sql.DriverManager.getConnection(DriverManager.java:512)
at java.sql.DriverManager.getConnection(DriverManager.java:171)
Translating the local spanish message, should be something like: "Can't find data source and no default driver defined."
I don't get this error if i access through the same driver but not on web server Tomcat 4.0.1. And I don't get this error even under Tomcat with other jdbc drivers (mysql for example).
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I would apreciate some help.
Thank you.

If you're running on Windows, you need to create an ODBC datasource to connect to.
To accomplish this, you need to go to Start >>> Control Panel >> Administrative Tools >> Data Sources (ODBC),
2. On the User DSN tab, click add
3. give it a name, this is the name you will use in the connection string. jdbc:odbc:<name>
4.Click Select, then find your mdb file, or other database file.
5. click Ok.

File upload and download through web Dynpro2.0.9. with Java

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How to do a ping with ICMP in Java under Linux?

Does anyone know an easy way to do a ping with ICMPs under Linux? I did it under Windows, but under Linux, I've got some issues. I need a procedure that sends a ping with a id number and a seq number and another function pong that waits for a reply and returns the seq and id of the packets it received.
if anyone did this, please tell me how. I know it should be a native method, but how do I implement it...

rigth, i thought of that. but imagine that i have something like 100 hosts wich i must ping something like 20 times and get all the results in something like 5 seconds.
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i already did it in windows with a native dll. but i'm not so experienced in linux... :( so, if anyone can help...please do

Running under Tomcat

I have a simple prototype app which runs quite nicely under the bundled apps server.
I want to run it under my Tomcat 5.
I have loaded the two jars as described in http://developers.sun.com/prodtech/javatools/jscreator/reference/docs/help/deploy/howtodeploy/deploy_tomcat.html
So, my Library list shows JSTL 1.1 - standard.jar and JSTL 1.1 - jstl.jar
I also included the 'commons' jars which Tomcat requires - beanutils.jar, digester.jar, logging.jar and validator.jar
All of these 'additions' seems to have no detrimental effect on the built in app server of jsCreator.
The app works fine up till the time it attempts to establish connectivity to MySQL.
I have previously hand coded a similar working app under tomcat before I started using jsCreator.
Creating a context under tomcat involves creating a context.xml in the META-INF directory (which I have created as project/web/META-INF/context.xml
(which contradicts the Sun instructions of putting the context inside the Tomcat system config - Tomcat instructions say thee context should be as above)
Tomcat complains
2006-22-04 16:22:05,209 DEBUG Login - Loading auth data
2006-22-04 16:22:05,211 DEBUG Login - Context established - datasource is java:comp/env/jdbc/YourRosterDB
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org.apache.commons.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
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Make sure that in your server.xml file found in conf folder for Tomcat you have the following context completely filled out. Something like this:
<Context path="/gladiatorsgameserver">
<Resource auth="Container" description="Rave generated DataSource Reference" name="jdbc/Gladiators" type="javax.sql.DataSource" password="adminadmin" driverClassName="org.gjt.mm.mysql.Driver" maxIdle="2" maxWait="5000" username="root" url="jdbc:mysql://127.0.0.1:3306/gladiators" maxActive="100"/>
<WatchedResource>WEB-INF/web.xml</WatchedResource>
</Context>

Problem with JDBC and Tomcat

I don't know where the problem originate, the only thing in my memory is that the program worked very well on my PC yesterday, but today, without even slightest change, it doesn't work anymore. As to debug it, I simplified the codes to the least, but it still refuse to work. I was beaten down by this problem totally, and cannot make out any solution for it, so, I come here, hoping to find a warrior to kill this damned bug for me.
My program is a Servlet, but for the purpose of debugging, I have recode it to an Application/Servlet. When run as a application, I can get the result expected, but as a Servlet, :-(, maybe you should see it by yourself. My server software is Tomcat 4.1.15, and the JDK version is 1.4.0. To excute this program, you should add Data Source "Test" to ODBC.
///////////////////////code begins/////////////////////////
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class Ex extends HttpServlet
     int ErrorType = 0;
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          System.out.println(cEx.ErrorType);
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          try{
               Connection c = DriverManager.getConnection(url);
          } catch (SQLException e) {
               e.printStackTrace();
               ErrorType = 2; //trapped in DriverManager.getConnection
               err = e.getMessage();
     public void service(HttpServletRequest req, HttpServletResponse res)
               throws IOException {
          res.setContentType("text/html; charset=GB2312");
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          out.println("Success " + "<p>" + ErrorType + "<p>" +err);
          out.close();
//////////////////////////code ends///////////////////////////////
The result from the Servlet tell me that the problem occurred within the connection process, I don't know who should be responsible to this - Tomcat or JDBC?

If you could print the exception that you got then that would help :) In the mean time, I could make a guess. It is unlikely that your application server (in this case, Tomcat) is blocking connections from your servlet. So the problem is either with JDBC directly or with the underlying datasource. It seems unlikely that it is JDBC given that you have stated that the code has not changed and it works in application form.
My guess would be that you are coming up against some sort of security constraint (eg: your DBMS is letting you log in from one IP but not another?, your Java plug-in security policy is disallowing the connection?). It's hard to say.
But if it works as an application but not via a servlet then you could try putting this in your java.policy file, which is located in the directory where your plug-ins are installed (eg: "C:\Program Files\Java\<version>\lib\security\") on Windows systems;
permission java.net.SocketPermission "bend xp:1099", "listen,connect,accept";
Try that, see if it works :)
Ben

JSF webapp works with Java 1.4, but not Java EE 5

Hello
I am having a really weird problem with internationalizing my JavaServer Faces web application.
I am using Netbeans 6.0, Tomcat 6.0.10, JSF 1.2, and JTSL 1.1....
If I use Java 1.4 to run the webapp, everything works fine!
If I use Java EE 5 then it fails to execute internationalization of my choosen locale.
I could just use Java 1.4 and have my site working fine, but I would really like to use Java EE 5 since it can do more. Also I don't see why it can work on one version of Java but not another. My locales are English (en) and Korean (ko).
This is my index.jsp
<%--
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    Created on : 2/05/2008, 01:33:01
    Author     : Steve
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<%@taglib prefix="f" uri="http://java.sun.com/jsf/core"%>
<%@taglib prefix="h" uri="http://java.sun.com/jsf/html"%>
<%@taglib prefix="c" uri="http://java.sun.com/jstl/core"%>
<html>
    <f:view locale="#{localeBean.language}">
        <f:loadBundle basename="resources.messages" var="msg"/>
        <head>
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        <body>
            <h2>Hello <h:outputText value="#{localeBean.country}"/>!</h2>
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                    <f:selectItem itemLabel="English" itemValue="en"/>
                    <f:selectItem itemLabel="��" itemValue="ko"/>
                </h:selectOneMenu>
            </h:form>
            <h:outputText value="#{localeBean.language}"/>
        </body>
    </f:view>
</html>This is my localeBean which is under the package "resources"
* To change this template, choose Tools | Templates
* and open the template in the editor.
package resources;
* @author Steve
import java.util.Locale;
import javax.faces.event.ValueChangeEvent;
public class localeBean {
    private String language = Locale.getDefault().getLanguage();
    private String country = Locale.getDefault().getCountry();
    public String getLanguage() {
        return language;
    public void setLanguage(String newValue) {
        language = newValue;
    public String getCountry() {
        return country;
    public void setCountry(String newValue) {
        country = newValue;
    public void dropdown1_processValueChange(ValueChangeEvent vce) {
        setLanguage((String) vce.getNewValue());
}This is my faces-config file
<?xml version='1.0' encoding='UTF-8'?>

<faces-config version="1.2"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd">
<application>
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            <supported-locale>en</supported-locale>
            <supported-locale>ko</supported-locale>
        </locale-config>
        <message-bundle> resources.messages </message-bundle>
    </application>
    <managed-bean>
        <managed-bean-name>localeBean</managed-bean-name>
        <managed-bean-class>resources.localeBean</managed-bean-class>
        <managed-bean-scope>session</managed-bean-scope>
    </managed-bean>
</faces-config>and lastly I have my message bundle under the "resources" package which is named "messages".
This has a key word "language" which is "Language" in the 'en' locale file and "��" in the 'ko' locale file.
Once again when using Java 1.4 this project runs fine, however with Java EE 5 it does not.
You may notice in my index.jsp that I have <h:outputText value="#{localeBean.language}"/>
I use this to display the locale that has been chosen by my select box. Even when this shows a different language has been chosen the page does still not display in the correct language. According to <f:view locale="#{localeBean.language}"> then the locale of the page should be changed.
I have looked over the web quite far for an answer to this problem. But everyone else seems to be using a similar method of loading up a message bundle and using it the same way I am. However my method does not work.
Any suggestions or clues to what is going wrong would be really appreciated.
Thanks in advance^^

it seems that the
<f:view locale="en">
only work if a ressource bundle with the locale sufix '_en' is provided.
Everything works now if I provide 3 ressouce files:
global_en.properties
global_de.properties
global.properties
global.properties and global_en.properties are identically!
But if I delete the global_en.properties file always the global_de.properties file wins before the default properties.
I did not expect such a behavior :-(

Problem uploading a file to tomcat

Hey!
Im tyring to upload a file to a subdirectory of the root folder in Tomcat Apache but it gives me a "Access denied" error message...
Im using the org.apache.commons.fileupload classes.
Has anybody got an idea on what could be wrong?
Im not all that experienced as yet so feel free to spell it out for me ok...

Access denied suggests your user account doesn't have permission to write to this folder, I don't think its anything to do with java as such at all.

Trying to make oracle-xsql-servlet to work under tomcat

I am trying setup Setup "oracle-xsql-servlet" to work under tomcat.
#1. I have installed the xdk from orcale at "C:\xdk_nt_10_1_0_2_0_production"
#2. I have installed "Apache Tomcat Version 6.0.14"
#3.
I have made the following changes to "catalina.bat"
REM Added for Oracle XSQL Servlet
REM -----------------------------
set CLASSPATH=%CLASSPATH%;C:\xdk_nt_10_1_0_2_0_production\lib\xsu12.jar
set CLASSPATH=%CLASSPATH%;C:\xdk_nt_10_1_0_2_0_production\lib\oraclexsql.jar
set CLASSPATH=%CLASSPATH%;C:\xdk_nt_10_1_0_2_0_production\lib\xmlparserv2.jar
set CLASSPATH=%CLASSPATH%;C:\xdk_nt_10_1_0_2_0_production\lib\classes111.zip
set CLASSPATH=%CLASSPATH%;C:\xdk_nt_10_1_0_2_0_production\xdk\admin
echo %CLASSPATH%
#4 created a new folder under "C:\apache-tomcat-6.0.14\apache-tomcat-6.0.14\webapps" xdk
and created a web.xml in it. Following are the entries is the web.xml:
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
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XDK Examples.
</description>
     <display-name>XDK Examples</display-name>
     <servlet>
          <servlet-name>oracle-xsql-servlet</servlet-name>
          <servlet-class>oracle.xml.xsql.XSQLServlet</servlet-class>
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     <servlet-mapping>
          <servlet-name>oracle-xsql-servlet</servlet-name>
          <url-pattern> *.xsql </url-pattern>
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PROBLEM. When I start up tomcat, I keep getting the following errors.
SEVERE: Error deploying web application directory xdk
java.lang.NoClassDefFoundError: javax/servlet/http/HttpServlet
     at java.lang.ClassLoader.defineClass1(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
     at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
OTHER APPLICATIONS such as Examples (provided by apache) work fine.
Any ideas ?

XSQL may be used with Tomcat 3.1 and 3.2.
Refer to section Jakarta Tomcat 3.1 or 3.2
http://www.oracle.com/technology/tech/xml/xdk/doc/production10g/doc/java/xsql/xsql_userguide.html#ID3386

Clustered upload with java under tomcat

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