深入学习java笔记-8.SpringBoot2.1之Interceptor

InterceptorWebMvcConfig.java

import com.ctgu.springstart.interceptor.LoginInterceptor;
import com.ctgu.springstart.interceptor.TwoInterceptor;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Configuration
public class InterceptorWebMvcConfig implements WebMvcConfigurer {

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new LoginInterceptor()).addPathPatterns("/api2/*/**");
        registry.addInterceptor(new TwoInterceptor()).addPathPatterns("/api2/*/**");
        WebMvcConfigurer.super.addInterceptors(registry);
    }
}

LoginInterceptor.java

import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Component
public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request,
                             HttpServletResponse response, Object handler) throws Exception {
        System.out.println("LoginInterceptor---------->preHandle");
        return HandlerInterceptor.super.preHandle(request, response, handler);
    }

    @Override
    public void postHandle(HttpServletRequest request,
                           HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        System.out.println("LoginInterceptor---------->postHandle");
        HandlerInterceptor.super.postHandle(request, response, handler, modelAndView);
    }

    @Override
    public void afterCompletion(HttpServletRequest request,
                                HttpServletResponse response, Object handler, Exception ex) throws Exception {
        System.out.println("LoginInterceptor---------->afterCompletion");
        HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
    }
}

TwoInterceptor.java

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class TwoInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request,
                             HttpServletResponse response,
                             Object handler) throws Exception {
        System.out.println("TwoInterceptor---------->preHandle");
        return HandlerInterceptor.super.preHandle(request, response, handler);
    }

    @Override
    public void postHandle(HttpServletRequest request,
                           HttpServletResponse response,
                           Object handler,
                           ModelAndView modelAndView) throws Exception {
        System.out.println("TwoInterceptor---------->postHandle");
        HandlerInterceptor.super.postHandle(request, response, handler, modelAndView);
    }

    @Override
    public void afterCompletion(HttpServletRequest request,
                                HttpServletResponse response,
                                Object handler, Exception ex) throws Exception {
        System.out.println("TwoInterceptor---------->afterCompletion");
        HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
    }
}