The apache tomcat native library which allows using openssl was not found on the java.library.path

The Apache Tomcat Native Library is a library that enables the use of the OpenSSL cryptographic library in Apache Tomcat. The error message “the Apache Tomcat Native library which allows using OpenSSL was not found on the java.library.path” indicates that the required library is missing from the system’s library path.

To resolve this issue, you need to obtain and install the Apache Tomcat Native library and ensure that it is correctly configured with the Java runtime environment.

Here are the detailed steps to resolve the issue:

1. Download the Apache Tomcat Native library: You can download the library from the official Apache Tomcat website. Make sure to choose the appropriate version that matches your Tomcat installation and operating system.
2. Extract the library files: Once downloaded, extract the library files to a directory on your system.
3. Update the java.library.path: The java.library.path system property defines the search path for native libraries in Java. You need to add the directory containing the Apache Tomcat Native library files to this path. This can be done in multiple ways:
   • Command Line: If you are running the Tomcat server from the command line, you can add the following argument to the startup command: -Djava.library.path=/path/to/native/library
   • Catalina.properties: If you are using Tomcat’s catalina.properties file to configure the server, you can add the following line to the file: java.library.path=/path/to/native/library
   • Set the property programmatically: If you are programmatically starting Tomcat, you can set the property using Java code:
     System.setProperty("java.library.path", "/path/to/native/library");
4. Validate the configuration: Restart the Tomcat server and check if the error message is no longer displayed. You can verify that the Apache Tomcat Native library is being properly used by checking the Tomcat logs and ensuring that SSL connections are functioning correctly.

Here’s an example command line used to start Tomcat with the Apache Tomcat Native library:

./catalina.sh run -Djava.library.path=/path/to/native/library

Make sure to replace /path/to/native/library with the actual path where you have extracted the Apache Tomcat Native library files.

By following these steps, you should be able to resolve the issue and use the OpenSSL library with Apache Tomcat successfully.