study spring

1. java.lang.reflect.Method

　　o // UserService instrance,

　　refObject // class instrance, eg UserDAOImpl (implement UserDAO)

　　methodName = "setUserDAO";   //

　　Method m = o.getClass().getMethod(methodName, refObject.getClass().getInterfaces()[0]);
　　m.invoke(o, refObject);   // = o.setUserDAO(refObject);

2. add User Libraries

　eclipse: window->reference->Java->Build Path->User Libraries

   New-> libName -> Ok

   select libName->add JARs...(spring\dist\....jar)-> ok

3. add user libraries

　select project->Build Path->add libraries->user library-> ...select it -> OK