Saturday, 16 March 2013

Invoking Java BeanShell from .Net CLR

Here is a very rough PoC of how I was able to execute a JavaBean shell script from inside the O2 Platform (with the java code executed under a JVM)

Executing "return 2+2;" as a java beanshell comand (see result on the bottom right Output pane)

image

var jni4Net = new API_Jni4Net();
jni4Net.setUpBride();

var beanShellJar = "http://www.beanshell.org/bsh-2.0b4.jar".uri().download(false);
var _string = JNIEnv.ThreadEnv.NewString("return 2+2; ");
var interpreter_Class = beanShellJar.java_Jar_Class("bsh.Interpreter");

var interpreter = interpreter_Class.newInstance();
var result = interpreter.java_Invoke_UsingSignature("eval","(Ljava/lang/String;)Ljava/lang/Object;",_string);
return result.toString();

return beanShellJar.java_Jar_Classes();
  
//using net.sf.jni4net.jni;
//using java.lang;
//using java.net;
//O2File:API_Jni4Net.cs
//O2Ref:jni4net.n-0.8.6.0.dll

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