I want to pass one DTO from Interceptor to Controller? How should I proceed? I have tried by define
a) Create one component(which needs to be transferred) b) In Interceptor, get the instance by auto-wiring, set data to auto-wired instance c) Get Auto-wired instance in controller, but this does not seems to work.
I always get the blank object in Controller?
Component
@RequestScope
@Component
public class UserLoginInfoDTO {
private int userId;
private String email;
private String firstName;
private String lastName;
.. setters / getters
}
HandleInterceptor
@Component
public class Inter implements HandlerInterceptor {
@Autowired
private UserLoginInfoDTO user;
@Override
public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
throws Exception {
// TODO Auto-generated method stub
System.out.println("After completion");
}
@Override
public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
throws Exception {
// TODO Auto-generated method stub
System.out.println("Post Handle");
}
@Override
public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2) throws Exception {
// TODO Auto-generated method stub
System.out.println("Pre Handle");
user.setEmail("anki.vv");
return true;
}
}
In Controller, If I get autowired instance and prints it, blank object is getting returned.
I have registered by Handle Interceptor as
@Override
public void addInterceptors(InterceptorRegistry arg0) {
ApplicationContext ctx = new AnnotationConfigApplicationContext(Demo.class);
Inter helloWorld = ctx.getBean(Inter.class);
arg0.addInterceptor(helloWorld);
// TODO Auto-generated method stub
}
Demo is config class
@Configuration
public class Demo {
@Bean
public Inter inter() {
return new Inter();
}
@Bean
public UserLoginInfoDTO uu() {
return new UserLoginInfoDTO();
}
}
