如何将对象注入到groovy servlet中？

import groovyx.net.http.GroovyServlet

class MyServlet extends GroovyServlet {
   //...
}

import groovyx.net.http.GroovyServlet

class MyServlet extends GroovyServlet {
   def myObject

   void setMyObject(object) {
      this.myObject = object
   }
}

<web-app xmlns="http://java.sun.com/xml/ns/j2ee" version="2.4">
   <servlet>
      <servlet-name>MyServlet</servlet-name>
      <servlet-class>com.example.MyServlet</servlet-class>
      <init-param>
         <param-name>initObject</param-name>
         <param-value>com.example.MyObject</param-value>
      </init-param>
   </servlet>
   <servlet-mapping>
      <servlet-name>MyServlet</servlet-name>
      <url-pattern>/path/to/servlet</url-pattern>
   </servlet-mapping>
</web-app>

import groovyx.net.http.GroovyServlet

class MyServlet extends GroovyServlet {
   def myObject

   void init(ServletConfig config) throws ServletException {
      super.init(config)
      String initObjectName = config.getInitParameter("initObject")
      myObject = Class.forName(initObjectName).newInstance()
   }

   void setMyObject(object) {
      this.myObject = object
   }
}