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Apache Kafka 0.9 Scala Producer/Consumer With Some RxScala Pixie Dust

by Sacha Barber

An article on how to use the open source Apache Kafka messaging framework, with a bit of RxScala thrown in for good luck

Apache Spark/Cassandra 1 of 2

by Sacha Barber

Looking at Spark/Cassandra working together

Powerful IIS/Apache Monitoring Dashboard using ElasticSearch+Grafana

by Omar Al Zabir

Use ElasticSearch and Grafana to build powerful and beautiful dashboards. Monitor and analyze IIS/Apache logs in near real time

JAX-WS: Using Apache CXF to Create a Bottom-Up Web Service, Web Service Client, and Securing the Web Service

by Christopher Swiderski

We’ll be using Java 7 and the Apache CXF framework for implementing a web service and client within the Eclipse IDE.

Latest Articles

VisionFive 2 RISC-V - Setting up Apache2, Php, Postgres, Mosquitto, and Compilers

by Richard Chambers

Creating a simple VisionFive 2 RISC-V SBC web site using Apache2, PHP, and Postgres with the Mosquitto message broker and installing Golang, Java, and Rust.

Automating OpenOffice Calc from Visual Studio 2022 using C#

by chionatech

A step by step guide on how to automate Apache OpenOffice Calc using Visual Studio 2022 and the C# language

Avoiding Kotlin Minefields in Apache Beam

by Rion Williams

How to avoid Kotlin minefields in Apache Beam

An Education in Streaming

by Rion Williams

Some recommended readings about streaming systems

All Articles

Apache

Redirect unrestricted page when another page is restricted

6 Feb 2024 by Andre Oosthuizen

You are almost on the right track. You can modify your '.htaccess' file by adding 'ErrorDocument 403 /redirect.php' - ErrorDocument 403 /redirect.php SetEnvIf CF-Connecting-IP "^103\.111\.227\.224$" ALLOWED_IP=1 SetEnvIf CF-Connecting-IP...

Redirect unrestricted page when another page is restricted

4 Feb 2024 by FX Magician

ServerName admin.fxmagician.com ServerAlias www.admin.fxmagician.com DocumentRoot /var/www/admin.fxmagician.com/public/ Options All -Indexes AllowOverride All Require...

Apache/PHP compression not working

25 Jan 2024 by ThePotty1

Hi Apologies, I'm figuring this out as I go along, so I might state the obvious, or not state something that I should. This probably isn't even the right place to ask, but I suspect there are other devs here who've had to figure this out in...

Apache/PHP compression not working

25 Jan 2024 by ThePotty1

Morning. I'm going to post my findings as a solution, because I feel it helps to keep the initial symptoms I experienced separate from my final analysis. So. Navigate to your web page using your browser, and turn developer tools on. Click the...

Apache/PHP compression not working

24 Jan 2024 by Andre Oosthuizen

Looking at your link given, you are going about this the wrong way, PHP is supposed to be your backend and javascript/jquery you front end looking at your post... You are adding multiple loads to your requests on you server which responds in slow...

VisionFive 2 RISC-V - Setting up Apache2, Php, Postgres, Mosquitto, and Compilers

16 Dec 2023 by Richard Chambers

Creating a simple VisionFive 2 RISC-V SBC web site using Apache2, PHP, and Postgres with the Mosquitto message broker and installing Golang, Java, and Rust.

How to use multiple rewritecond

23 Aug 2023 by Userxman0

I need to use more than one RewriteCond for a redirection with this rule: if it has 1 or all of these specified, do not redirect it. RewriteCond %{HTTP_USER_AGENT} !Googlebot RewriteCond %{ENV:GEOIP_COUNTRY_CODE} !fr RewriteCond...

How to use multiple rewritecond

23 Aug 2023 by Andre Oosthuizen

Use the '[NC]' flag to make the pattern matches case-insensitive. Use the '^' and '$' symbols in the country code and 'referer' conditions indicate the start and end of your respective strings - RewriteRule Flags[^] The RewriteRule '^ - [L]'...

How do I fix notice " column 'firstname' cannot be null " with error on line 17

15 Jun 2023 by Member 16029663

Hello, I'm a beginner in PHP, HTML, and Apache. When I run the file, the XAMPP has a notice: Fatal error: Uncaught mysqli_sql_exception: Column 'firstname' cannot be null in C:\xampp\htdocs\connect\connection.php:17 Stack trace: #0...

How do I fix notice " column 'firstname' cannot be null " with error on line 17

15 Jun 2023 by Andre Oosthuizen

OriginalGriff is spot on, your data table with a field named 'firstname' is configured to accept a value otherwise it will return as invalid. To check if each of your variables has a value, you can run - $lastname = filter_input(INPUT_POST,...

How do I fix notice " column 'firstname' cannot be null " with error on line 17

14 Jun 2023 by OriginalGriff

Validate your data before you try to submit it: the error is pretty clear: Column 'firstname' cannot be null You fetch the value from the user page, but you don't try to check if the user entered anything. If he didn't, $firstname will be null,...

Alternatives to Microsoft excel for UFT automation

13 Jun 2023 by Padmapriya Elangovan

Hi, We have an automation framework developed with UFT long back and been in use to test a legacy windows application build on .Net. We use microsoft excel till now, and due to some of the constraints, we need to check for excel alternatives...

Alternatives to Microsoft excel for UFT automation

13 Jun 2023 by Dave Kreskowiak

Excel doesn't do the actual testing since that's not what Excel does. It can, however, be use as source data for the testing framework and storing of results. You're going to have to ask the vendor of the UFT framework you're using to see if...

How can I use the 'take(n)' function in spark 3.4.0 with pyspark to display the top 3 rows of a CSV file?

27 May 2023 by Member 8840306

I am new in spark .I want to use function "take(3)" for getting(displaying) 3 row of my csv file It is collecting the record correctly raw_data =sc.textFile(“day.csv”) raw_data.collect() Quote: ['Name,Abbreviation,Numeric,Numeric-2',...

How can I use the 'take(n)' function in spark 3.4.0 with pyspark to display the top 3 rows of a CSV file?

27 May 2023 by Richard MacCutchan

Look at the error message: Python was not found; run without arguments to install from the Microsoft Store, or disable this shortcut from Settings > Manage App Execution Aliases. 23/05/27 22:29:16 ERROR Executor: Exception in task 0.0 in stage...

Automating OpenOffice Calc from Visual Studio 2022 using C#

3 Apr 2023 by chionatech

A step by step guide on how to automate Apache OpenOffice Calc using Visual Studio 2022 and the C# language

Make my dynamic urls SEO friendly and and user friendly

22 Feb 2023 by Andre Oosthuizen

You can use URL rewriting techniques to convert the dynamic URLs into static URLs by changing it'd format. In your .htaccess file you can use something like this - RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteCond...

Make my dynamic urls SEO friendly and and user friendly

22 Feb 2023 by Member 13934081

Hi, I’m using php/mysql on Windows shared hosting and have 1000 individual items to display on 1000 versions of the dynamically generated detail page which currently shows, for example, as: http://www.mydomain.com/folder/detail.php?ID=3...

No response after scaning file

5 Oct 2022 by Member 15789007

So I want to host this Project on an Apache web page on my Linux Server. I want to access it outside of the linux Server via Apache. What I have tried: I put in the html code as shown in the tutorial, it shows on the web page but after pressing...

Django with apache and mod_wsgi: increasingly high memory usage

9 Jul 2022 by Mathis 2022

My problem is that over time the memory usage (especially the virtual memory) increases until the system freezes. There is hardly not traffic on the server and it seems to happen independendly from making any HTTP-Request. Last time the virtual...

Not playing media files like mp3 mp4 and permission denied on apache server

23 Jun 2022 by Sandeep Rattu

On apache server I configured tomcat as proxy server that serves mp3 and mp4 from a folder named content. I have given 0755 permission recursively to all media files and changed owner group to root recursively. Media content is played on Firefox...

Not playing media files like mp3 mp4 and permission denied on apache server

23 Jun 2022 by OriginalGriff

This is a development site, not am apache / tomcat tech support site - try here: Apache Tomcat® - Find Help[^]

Getting error while creating servlet using servlet interface

20 Jan 2022 by Keshav 2022

The build is successful but I am unable to run the servlet as whenever I try to run I get 500-Internal Server error. Error snapshot attached for reference. It's giving some runtime exception. NetBeans IDE - 12.2 Apache Server -...

Getting error while creating servlet using servlet interface

20 Jan 2022 by thatraja

After quick search, found out that nb-javac plugin[^] solves the issue. Below threads confirms the same servlets - @WebServlet fails in Netbeans 11.0 with java.lang.RuntimeException: com.example.NewServlet.(NewServlet.java:1) - Stack...

Exception thrown : javax.servlet.servletexception: beanutils.populate

19 Dec 2021 by Iris Luna

Hi All. I'm developing a website using Java 1.5 and Struts but I'm encountering an exception error. I have this view details page and whenever I click back to go back to previous screen/page which is the list page, I encounter Error 500:...

Browser couldn't load images with size larger than 6kb (approx.) served by apache (windows).

2 Dec 2021 by rat2021

I have configured apache for localhost and served a image. But when I tried to access that image through localhost in my browser, the image doesn't show up. The access log in apache shows status code of 200, but network log in my browsers dev...

How to hide a website server using proxy

24 Oct 2021 by Sagadio

Hi everyone, could someone help me solve the following problem or provide me with a link where I can read about it? I have a website on a server, but I wish this server could not be found, see an example of how the access would be: the user...

How to hide a website server using proxy

24 Oct 2021 by Richard Deeming

Reverse Proxy Guide - Apache HTTP Server Version 2.4[^]

How to set index.php as default page in apache linux rhel

15 Sep 2021 by Member 14362033

I tried to set index.php as a default page in my PHP project which is running on apache. I edited httpd.conf file in path etc/httpd/conf/httpd.conf DirectoryIndex index.html index.php Also, I did ...

How to set index.php as default page in apache linux rhel

15 Sep 2021 by Peter_in_2780

Simple. The DirectoryIndex directive will use the first file it can find of the ones you list. So DirectoryIndex index.html index.php will use index.html if it exists, before it looks for index.php. As always, it pays to read the mod_dir -...

Virtual host is not working in apache on remote linux server

14 Sep 2021 by Member 14362033

I wrote httpd.conf file this way but it's not working for me. DocumentRoot "/var/www/html/" ServerName dev.test.com ServerAlias www.dev.test.com what am I doing wrong here. Please help What I have tried: ...

Virtual host is not working in apache on remote linux server

14 Sep 2021 by Richard MacCutchan

It may be that you need a closing tag as described at core - Apache HTTP Server Version 2.4[^]. However, since you provided no details about the actual problem, I am guessing here.

Cx_oracle persistent caonnection on flask+apache+mod_wsgi

13 Aug 2021 by OrangeLantern

cx_oracle persistent caonnection on flask+apache+mod_wsgi What I have tried: I have deployed my flask application on apache+mod_wsgi I'm using WSGI Daemon mode and have this config in apache httpd.conf: WSGIDaemonProcess flask_test...

Redirecting multiple duplicate urls to main URL using .htaccess

12 Aug 2021 by Coder Sam

I developed a website and from SEO point of view, the homepage of a website is available under three or more different URLs which accordingly poses a risk of duplicate content, since the same content can be accessed via different URLs. for eg....

Why <? PHP phpinfo(); ? > is not working?

3 Aug 2021 by Chris Copeland

I had issues a long time ago with something similar, and it turned out to be problems with the Windows Firewall blocking connection attempts. Make sure that you're exposing the port 80 or 8080 (whatever you have it set to) and make sure that...

Why <? PHP phpinfo(); ? > is not working?

3 Aug 2021 by Dev X

I have freshly installed apache and php and configured them, then I started apache and was trying to print phpinfo() on my webpage, but when I use phpinfo() in my code, the page keeps stuck on loading. My code: What I have...

Why <? PHP phpinfo(); ? > is not working?

3 Aug 2021 by Richard MacCutchan

It needs to be in a web page, try this: PHP Configuration details

How to 301 redirect to WP parent category?

16 Jun 2021 by crypto88

I need 301 redirects to parent categories via .htaccess file or via plugin in WP: /parent-category-1/item-1/ -> /parent-category-1/ /parent-category-2/item-1/ -> /parent-category-2/ /parent-category-3/item-1/ -> /parent-category-3/ ......

Member registered: jun 2005 location: hayden, ID distribution: ubuntu 18.04 posts: 357 rep: reputation: 9 PHP file will not open because of wrong permissions - in firefox browser

8 Jun 2021 by Member 15185337

Despite several manipulations of owner, group, and other permissions I can't get php to open/create a file. Here is a complete test script to show what is going on.

Member registered: jun 2005 location: hayden, ID distribution: ubuntu 18.04 posts: 357 rep: reputation: 9 PHP file will not open because of wrong permissions - in firefox browser

8 Jun 2021 by QuantumPlumber

Your apache server probably doesn't run as rick. Have you tried changing the file location to somewhere that your apache process has write permissions? ps -ef | grep http should tell you which user owns the apache process. The directories...

Error internal server error

14 May 2021 by Nguyễn Duy Bình 2021

Hi I writing .htacess for website but add RewriteRule and run web error Internal Server Error Convert link: touchme.vn/me?i=admin --> touchme.vn/me/admin I sent systax: RewriteEngine ON RewriteCond %{THE_REQUEST} /([^.]+)\.php [NC]...

Angular ngx-translate strange behaviour

2 Feb 2021 by EmpiUchi

Hi and thanks. I've developed an angular app, implementing ngx-translate. The translation works great on dev machine, and on 2 servers I've tested it on. But... on one of the servers it doesn't work (I get the keys instead of translation...

Flask-script running in server.py but not in init.py in same directory

19 Jan 2021 by Fynn Pfingsten

if i run this code: from flask import render_template import connexion # Create the application instance app = connexion.App(__name__, specification_dir='./') # Read the swagger.yml file to configure the endpoints app.add_api('swagger.yml') ...

I need your help about rewriting on htaccess

20 Nov 2020 by Hüseyin Türköz

site.com/index.php?p=universit...

Test server for eclipse IDE PHP 2020-06

29 Aug 2020 by Calvin Law

I'm new to PHP development and I'm facing some difficulties on installing a test server on the eclipse ide. Basically, i have installed wampserver x64 (apache 2.4, mysql 5.7 and PHP 7.0) with eclipse ide 2020-06 on a windows 10 machine. The...

Test server for eclipse IDE PHP 2020-06

29 Aug 2020 by User 14823784

Select local apache2 server that is attached and coming after installation through wamp64

Avoiding Kotlin Minefields in Apache Beam

18 Jun 2020 by Rion Williams

How to avoid Kotlin minefields in Apache Beam

How can I reach local file instead of controller url having app deployed on apache2?

11 Jun 2020 by Garth J Lancaster

This may help Mapping URLs to Filesystem Locations - Apache HTTP Server Version 2.5[^] What you have to realise is there must be 'protection' between the 'Web Layer' and the Local file system - imagine if on a Windows system a user could cause...

How can I reach local file instead of controller url having app deployed on apache2?

11 Jun 2020 by Member 14631177

My web app is running after being deployed on Apache2 (local OS is Ubuntu 18.04 LTS). There is a plethora of controller-related urls like localhost://get_id/ or localhost://delete/. Whenever I enter them into search mask, page of my we...

An Education in Streaming

15 May 2020 by Rion Williams

Some recommended readings about streaming systems

Install & Configure ActiveMQ - Artemis on Linux Ubuntu 18.04.x

8 May 2020 by stevenong_2006

How to install/configure the Artemis on the Linux Ubuntu 18.04.x OS

No log files being generated from PHP API error

10 Apr 2020 by Periurium

So I asked this question on StackOverflow and the people on there didn't seem to like my question very much so I will try to go into a little more detail on here. So my current problem is coming from a PHP API that I am building to handle User...

Remove INFO logs of apache CXF w listing service endpoints after server startup

4 Feb 2020 by phil.o

This SO post: How to change maven logging level to display only warning and errors? - Stack Overflow[^] seems to embrace the subject pretty well.

Remove INFO logs of apache CXF w listing service endpoints after server startup

4 Feb 2020 by Member 10777201

Working with a Maven web project and using Apache CXF(3.1.15) for RESTful web services with Apache tomcat 8.5. Whenever any API is hit just after server startup, Apache CXF lists out all the endpoints of the Services present in the CXF file as below: Below is the example of log messages: INFO:...

Replacing SSMTP with MSMTP in Docker

4 Feb 2020 by OwenDavies

Looks like sSMTP is no longer maintained, MSMTP is the suggested replacement. This post discusses how to do the replacement.

How do I use mod_rewrite to change the url

15 Jan 2020 by Truck53

I am trying to use mod_rewrite to change the url. I have the following syntax in my .htaccess file on my apache server: RewriteRule https://%{SERVER_NAME}/(.Contact_Us) https://%{SERVER_NAME}/?action=$1 I am trying to get this = "^http://localhost?action=Contact_Us" to look like this:...

How do I use mod_rewrite to change the url

15 Jan 2020 by phil.o

RewriteRule ^/Contact_Us /?action=Contact_Us mod_rewrite - Apache HTTP Server Version 2.4[^]

how to have a non case sensitive url?

9 Jan 2020 by Madzmar25

Hello guys... i would like to ask how to solve the case sensitivity problem of a website? Assuming i have a website namely www.mywebsite.com and i have a subdirectory in it namely subdirectory. So when i type in the url www.mywebsite.com/subdirectory its taking me to my...

web_development

Big Data Analytics using Apache Spark for .NET

1 Dec 2019 by MehreenTahir

This article will give you a gentle introduction and quick getting started guide with Apache Spark for .NET for Big Data Analytics.

Problems getting specific website files to work on every directory level

29 Oct 2019 by questorfla

Not a major issue but also a waste by duplicating files. I have to put index.php as well as styles.css on every directory level of folders on a website in order to get things to work properly. I am Not a website designer and this is probably a dumb question but I would appreciate any advice. ...

Remote debug mod-mono-server4

6 Oct 2019 by Andy_Bell

Good evenig. I'm wondering if there is away to remote debug MVC application running on Apache server from Visual Studio. This is equipped with Mod_mono and Mono-server4 and it hosts the web site in a Lan. I'm using Visual Studio in other PC connected to the same Lan. I need to debug some...

Remote debug mod-mono-server4

6 Oct 2019 by phil.o

Does this help you? Deploy, run, and debug your Linux project[^]

Apache setup virtual host

16 Jun 2019 by Member 14093672

Hi all, Here is my virtual host file, but when added the deny all, i am unable to see the site online. Just struggling to set up the virutal host with deny all for a particular sub directory within my application. How to make this secure..any suggestions are highly appreciated. What I have...

Apache setup virtual host

16 Jun 2019 by phil.o

You could try to change the order: Order allow,deny and check if it fits your needs.

Streaming ZIP File in PHP Without Temp File

7 Jun 2019 by Bjørn

On-the-fly streaming multiple files or directories in a ZIP file without a temp file

Building a Solr Cluster with TerraForm – Part 1

27 Apr 2019 by Kevin Mack

How to build a Solr cluster with Terraform

How to configuring PHP in apache2

3 Feb 2019 by Maciej Los

Quote: i have tried all solutions. What exactly? Please, refer this: PHP: Installation and Configuration - Manual[^]. There you'll find complete information about installation and configuration PHP on Apache2 server.

How to configuring PHP in apache2

3 Feb 2019 by prafulla1978

i have tried all solutions. but not get success. when i load module of PHP in apache2 server httpd.conf file no success give me answer please What I have tried: i tried LoadModule php5_module C:/php/php5apache2_4.dll ScriptAlias /php/"c:/php/" AddType application/x-httpd-php .php .php5...

Building Apache-tika Project using Eclipse

25 Jan 2019 by Priyanka Sabharwal81

Basic understanding of how to write/use the Apache-tika facade function and debug it in Eclipse

Maximum cpu utilization

6 Jan 2019 by OriginalGriff

How do you expect us to be able to sort that out for you? You need to look to your hosting service for analytics and find out what is going on while your site is being used - we can't do that because we don't have any access: heck we don't even know what URL your site is on, much less what it...

Limit database entries in java derby database

1 Jan 2019 by Member 13689608

Im using apache derby databse in a Javafx project. Its a library management system and there's a limit to the number of books that can be added to the system. Is there a way to limit the entries at around, let's say, a 100 books? To display an error message once that number of books have been...

Tomcat started in linux server but unable to access the java application url , instead showing up tomcat splash page

1 Nov 2018 by User 14008390

Make sure no other application using port 8080 before starting tomcat. If that's not the problem please paste tomcat log. If you want to change tomcat's default port, go to tomcat folder and open conf folder, in which you can see server.xml. In that file you can see something like

Tomcat started in linux server but unable to access the java application url , instead showing up tomcat splash page

1 Nov 2018 by Member 14032440

There is a java application which was developed in java 5. As part of upgradation we are converting this to java 8 application( to achieve this, I did an ANT build which is compatible to java 8 and created a war file). I pasted this war file to the webapps folder of tomcat 8.5 which is present...

How to redirect a page with rewrite of tomcat?

18 Oct 2018 by Ayrton Yagami

Hello friends, I'm trying to redirect one page to another with tomcat using Rewrite.config, but I can not get what I want. I have three page: index.jsp, login.jsp and Newlogin.jsp. I want to redirect the login.jsp page to NewLogin.jsp, but now it has swapped all pages through newloging.jsp. ...

Apache2 - execute Python scripts as pi user problem

30 Aug 2018 by MateoGlowinski

Hi, i've problem with Apache2. It is not executing Python Scripts which includes "sudo" command. Those scripts are working fine while running from terminal (as a "pi" user). Apache2 is running also "pi" user. Response for ps aux | grep apache2 command: root 409 0.0 0.4 7544 3824 ?...

Apache2 - execute Python scripts as pi user problem

30 Aug 2018 by Dave Kreskowiak

It doesn't work because sudo is interactive. It'll ask for a password which your website will not be able to "type in". I don't know how you're launching the command, so I suspect you're launching a command like "sudo command"? You can try changing the command to "echo password | sudo...

HTTP status 500 - unable to compile class for JSP:

16 Aug 2018 by Member 9983063

Hello Guys am working on jsp project this project made by my seniors now they left and i really just little bit sound knowledge of jsp please help me when i run this project so am getting this errors please help how can i solve it. HTTP Status 500 - Unable to compile class for JSP: type...

HTTP status 500 - unable to compile class for JSP:

16 Aug 2018 by Jerry Jeremiah

Shouldn't the import of com.apv.erp.resource.DbHandler be com.apv.erp.resource.DbHandler.* and the import of com.apv.erp.resource.PersistenceFactory be com.apv.erp.resource.PersistenceFactory.* ?

Favicon Not Loading -- Image Location is Fine on XAMPP?

28 Jul 2018 by Member 13587623

i think it should be in the ' .icon ' format for the browser's to detect as the webpage icon. Do try as the 'favicon.icon' and check once , hope it works fine...

Favicon Not Loading -- Image Location is Fine on XAMPP?

28 Jul 2018 by AndytheDev

I am currently using XAMPP, and my site is loading fine. Images are all displaying correctly except for the favicon.http://localhost/images/favicon.png loads fine, but it simply isn't displaying in the browser.SSL is turned off and all other images are displaying correctly.Any help...

Display logs of a specific time

19 Jul 2018 by Jochen Arndt

You did not specified what kind of tool or programming language you want to use. Tools There are multiple tools to view log files. Just search the web for something like "log file viewer" or "log file analyzer". Programming language Process the log file line by line. This can be done while...

Display logs of a specific time

19 Jul 2018 by Soma Sundar

I want to display all the logs in the computer for the given period of time in apache tomcat webpage display the logs from start time to end time which should be got from the user What I have tried: I did know what to do please help me I am just starting with tomcat and log files

Display C++ output on tomcat webpage

19 Jul 2018 by Member 13906075

i have a wmi c++ program i want to display the output of the program in the web browser using tomcat can anyone help me with that What I have tried: i don't know what to do. i did not tried any thing

Display C++ output on tomcat webpage

19 Jul 2018 by Jochen Arndt

Let the C++ application create HTML file(s) that are stored in the document path of the web server. If there is only one file, it can be stored in the root path of the server using the start page file name (usually index.htm[l]). Then it will be shown when navigating to the server URL. Otherwise...

How to Build Apache on Windows - 1.0

12 Jun 2018 by Member 13737597

This article shows how to build Apache web server from source on Windows.