The .NET Core Entity framework makes database access easy. When you auto-generate a Razor page in a .NET web application to edit a data row, the scaffolding places controls on the page for every column. There are columns in most of the tables that we don’t want to display or edit, like keys, checksums, password …
Author Archives: Laszlo Pinter
Splunk App for AWS
To collect data from AWS install the Splunk App for AWS plugin. The app currently can collect information from AWS Config, Config Rules, CloudTrail, Inspector, CloudWatch, CloudWatch Logs, Billing, S3, Kinesis, Metadata. New data source To set up a new data source, click the Set up button Already set up data source To add a …
Skip steps in an InSpec integration test based on Chef attribute values
To speed up the test of some complex recipes, I use an attribute to skip certain long-running installations when I only need to test the rest of the recipe. We will pass Chef Attribute values into an InSpec test using environment variables. Declare an attribute in the atrributes.rb file with a safe default value, to allow the …
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java.lang.NoClassDefFoundError, java.lang.ClassNotFoundException
When you add a dependency reference to a Java project, it may compile without any errors, but runtime you may get an error message similar to this: HTTP Status 500 – Internal Server Error Type Exception Report Message An exception occurred processing JSP page [/index.jsp] at line [1] Description The server encountered an unexpected condition …
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Java Spring MVC web application configuration in NetBeans 8
When you create a Java Spring MVC web application or make changes to an existing one, it is important to know the location of configuration values. Java package name The Java package name is stored in Every .java file package MY_PACKAGE_NAME pom.xml file <configuration> <mainClass>com.objectdb.Enhancer</mainClass> <arguments> <argument>MY_PACKAGE_NAME.MY_MAIN_CLASS_NAME</argument> </arguments> </configuration> .jsp file <%@page import=”MY_PACKAGE_NAME.*”%> <jsp:useBean id=”MY_BEAN_ID” type=”MY_PACKAGE_NAME.MY_DAO_CLASS_NAME” …
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org.apache.jasper.JasperException: java.lang.IllegalStateException: No output folder
This error can happen on Linux and Windows, and the cause could be the same. On Windows Server 2012R2 I opened a command prompt. To be able to delete a directory from the Tomcat webapps folder, I have issued the shutdown command. When I started the server with the startup command, and navigated to my local …
Only persistence units with transaction type JTA can be used as a container managed entity manager
NetBeans can use multiple deployment servers. When your web application uses the Entity Framework and you select the Glassfish server as the deployment server, you can get the error message when you try to run your application in the IDEÉ Severe: Exception while preparing the app : The persistence-context-ref-name […] in module […] resolves to a …
Git Bash and Command Prompt cannot see the VirtualBox shared folder on Windows 10 guest
When you start a Windows 10 guest machine in VirtualBox on your workstation, you can set up shared folders to seamlessly copy files between your workstation and the Windows 10 guest machine. The shared folder appears in Windows Explorer as a mapped network location. For more on this see Configure the Windows virtual machine in VirtualBox …
Refresh the environment variables in the Windows Command Prompt and PowerShell window
When the Windows Command Prompt and PowerShell windows open, they read the environment variables from the registry. If another process changes the value of an environment variable or creates a new one, the already open windows don’t reflect those changes. To reload the environment variables into open Command Prompt and PowerShell windows execute refreshenv
Install Git on Windows
If you use two-factor authentication see Create a Personal Access Token to use it as password in the command line tools at Switching to 2-factor authentication in GitHub Navigate to https://git-scm.com/download/win to download Git for Windows. The page automatically downloads the installer for the operating system you use. Install the application Accept the default values, including these: Make …