Java Apache httpclient interceptor for Spring MVC Configuration

If you want to add an HTTP interceptor with the Spring MVC Configuration this is just the right code for you.

1. Add the Class “SecurityWebInterceptor.class” file with:

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
public class SecurityWebInterceptor extends HandlerInterceptorAdapter {
@Override
public boolean preHandle(HttpServletRequest requestServlet, HttpServletResponse responseServlet, Object handler) throws Exception
{
System.out.println("MINIMAL: INTERCEPTOR PREHANDLE CALLED");
return true;
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception
{
System.out.println("MINIMAL: INTERCEPTOR POSTHANDLE CALLED");
}
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception exception) throws Exception
{
System.out.println("MINIMAL: INTERCEPTOR AFTERCOMPLETION CALLED");
}
}

2. Frist add in the configuration the following:

public class WebConfiguration implements WebMvcConfigurer {
  
  ...
  @Override
  public void addInterceptors(InterceptorRegistry registry)
  {
    registry.addInterceptor(new SecurityWebInterceptor());
  }
  ...
}

Now for each request made in your backend the Interceptor should be called and you should find a console log. Now you can modify every request you want in the SecurityWebInterceptor class.