feat: support JDK8 ScriptEngine packer

vul-webapp/src/main/java/ScriptEngineServlet.java

@@ -0,0 +1,26 @@
+import javax.script.ScriptEngineFactory;
+import javax.script.ScriptEngineManager;
+import javax.script.ScriptException;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.xml.bind.DatatypeConverter;
+import java.io.IOException;
+
+/**
+ * @author ReaJason
+ * @since 2024/12/3
+ */
+public class ScriptEngineServlet extends HttpServlet {
+    @Override
+    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        String js = req.getParameter("js");
+        try {
+            Object eval = new ScriptEngineManager().getEngineByName("js").eval(js);
+            resp.getWriter().println(eval.toString());
+        } catch (ScriptException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}