A code is worth 1000 words of explaining it :-)
package jasim;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
public class JSTest {
public static void main(String[] args) throws ScriptException {
ScriptEngine jse = new ScriptEngineManager().getEngineByExtension("js");
jse.eval("println(new jasim.JSTest().toString)");
}
@Override
publi开发者_开发技巧c String toString() {
return "JSTest Object";
}
}
This code will fail with the below exception:
Exception in thread "main" javax.script.ScriptException: sun.org.mozilla.javascript.internal.EcmaError: ReferenceError: "jasim" is not defined. (<Unknown source>#1) in <Unknown source> at line number 1
How do I import my own classes into the ScriptEngine?
After looking at the Mozilla Rhino docs, the solution is either to use:
importPackage(Packages.jasim)
within the script, or to use new Packages.jasim.JSTest()
This is not so clear in the Sun docs regarding the importPackage in the ScriptingEngine docs.
The same way you import javax.script.ScriptEngine;
...
Just make sure your classes are in the CLASSPATH
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