Spring Boot adds interceptors

Spring Boot implements custom interceptor steps:

1. Create our own interceptor class and implement the HandlerInterceptor interface.

public class MyInterceptor implements HandlerInterceptor{
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response,
        Object handler) throws Exception {
	    return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response,
        Object handler, ModelAndView modelAndView) throws Exception {
		
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response,
        Object handler, Exception ex) throws Exception {
    }

}

 

2. Create a Java class that inherits WebMvcConfigurerAdapter and override the addInterceptors method.

3. Instantiate our custom interceptor, and then manually add the object to the interceptor chain (in the addInterceptors method).

@Configuration
public class WebInterceptorConfigurer extends WebMvcConfigurerAdapter {
    // addPathPatterns is used to add interception rules
    // excludePathPatterns user exclude interception
	@Override
	public void addInterceptors(InterceptorRegistry registry) {
		registry.addInterceptor(new MyInterceptor()).addPathPatterns("/**");
		super.addInterceptors(registry);
	}
}

 

Note: The interceptor chain will only go through the request of DispatcherServlet, and our custom Servlet request will not be intercepted.

http://blog.csdn.net/catoop/article/details/50501696