Knowledge Base for IT Professionals, Teachers and Astronauts
There are two ways to deploy a WAR file of a Java web application on the Apache Tomcat web server Using the command line Copy the WAR file into the webapps folder of the Tomcat installation directory, Make sure the CATALINA_HOME environment variable points to the Tomcat directory (not the bin subdirectry) Open a Terminal window or …
Continue reading “Deploy a WAR file of a Java web application on the Apache Tomcat web server”
Configure the web application Add the web.xml file The wb.xml file contains the web application configuration values for the webserver. I has to be in the WEB-INF directory of the web applicaion. To add the web.xml file to your NetBeans Java web application Right-click the Netbeans project, and select New -> Other… In the New File window select …
Continue reading “Create a WAR file for a Java web application in NetBeans”
If the Terraform apply execution times out during the RDS instance creation, the specified Security Group and Parameter Group is not set in the RDS instance. The solution is to set the timeout in the aws_db_instance resource. When a multi-az RDS instance is launched from a snapshot, the process can take more than 55 minutes. The default …
Continue reading “The specified Security Group and Parameter Group are not set in the RDS instance”
If you have multiple GitHub accounts and you want to switch between them you need to update the stored username and password on your workstation. On Windows See Git configuration
When your application tries to store 4-byte Unicode characters in a MySQL database you may get the error rmessage java.sql.SQLException: Incorrect string value: ‘\x..\x..\x..\x..\x..\x…’ for column To store 4-byte Unicode characters in MySQL you need a modern version of the database engine, version 5.5 or later, set the column collation to COLLATE utf8mb4_unicode_ci in the database, …
To get the information on all teams you are part of in Github Open a Terminal window Execute this command with your Personal Access Token curl -H “Authorization: token YOUR_PERSONAL_ACCESS_TOKEN” https://api.github.com/user/teams The returned JSON will display all information on the teams you belong to. To generate a personal access token See Create a Personal Access Token …
Continue reading “Display all teams you belong to in GitHub”
When you execute your Java JAR file, you need to include all dependent JAR files in the “fat jar” file, so the Java virtual machine can find them at runtime. Set up NetBeans to include the JAR files from the library In NetBeans you need to add the list of dependent libraries to the build.xml file. On the …
Continue reading “Package dependent Java JAR files into the project JAR file”
When you rename a subdirectory under the directory where your Linux or MacOS terminal is open you may get the error message /opt/chefdk/embedded/lib/ruby/gems/2.4.0/gems/chef-13.4.19/lib/chef/knife/cookbook_download.rb:45:in `pwd’: No such file or directory – getcwd (Errno::ENOENT) You need to refresh the directory cache of the terminal. Go one level higher cd .. Go back to the directory cd MY_DIRECTORY …
Continue reading “`pwd’: No such file or directory – getcwd (Errno::ENOENT)”
To install the MySQL database server, download the installer from https://dev.mysql.com/downloads/ Download the MySQL Community Server from https://dev.mysql.com/downloads/ On the Generally Available (GA) Releases tab select the operating system and click the Go to Download Page button, Click the Download button next to the web or offline installer, If you don’t want to register at Oracle, click the No …
When you create your first Spring MVC Java web application in the base installation of NetBeans follow the steps below Create a project In the File menu select New Project… Select the Java Web category, select the Web Application project, and click Next, Enter the name of the project and click Next, If this is …
Continue reading “Start a new Spring MVC Java Web application development in NetBeans”