Bean Scripting Framework: The script framework in the Java class library

Bean Scripting Framework (BSF) is a Java class library for the script function in Java applications.Scripting refers to the logic of code logic of scripting language in the application without re -compilation and deployment of the entire application. BSF supports a variety of script languages, including JavaScript, Python, Ruby, TCL, Lisp, etc.It allows developers to embed these script language into the Java program to achieve dynamic logical control and scalability. In order to use BSF, you need to configure the corresponding script interpreter first. For example, if you want to use JavaScript as a script language, you need to use Rhino (Mozilla's JavaScript engine) interpreter for configuration. Below is a simple Java code example, demonstrating how to use the BSF framework to execute the JavaScript script: import org.apache.bsf.BSFEngine; import org.apache.bsf.BSFException; import org.apache.bsf.BSFManager; public class BSFExample { public static void main(String[] args) { try { // Create a BSF manager BSFManager bsfManager = new BSFManager(); // Register a javascript interpreter bsfManager.registerScriptingEngine("javascript", "rhino"); // Execute JavaScript script BSFEngine engine = bsfManager.loadScriptingEngine("javascript"); engine.exec("javascript", "var message = 'Hello, BSF!'; print(message);"); } catch (BSFException e) { e.printStackTrace(); } } } In the above example, we created a BSF manager and then registered the JavaScript interpreter (Rhino).Then, the JavaScript interpreter was loaded through the BSF manager, and a simple JavaScript script was executed, which printed a message. The BSF framework provides a simple and powerful way for Java developers to achieve scripting functions.It allows developers to use existing script language to achieve business logic, thereby improving the flexibility and scalability of the application.Whether it is necessary to configure dynamic configuration or to provide some expansion points for third -party developers, BSF is a good choice.