深入探究SpringBoot拦截器的自定义设计与实现全攻略

@Slf4j
@Component
public class LoginInterceptor implements HandlerInterceptor {

	@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponseresponse, Object handler) throws Exception {
	log.info("LoginInterceptor 目标方法执行前执行..");
	return true;
	}

@Override
public void postHandle(HttpServletRequest request, HttpServletResponseresponse, Object handler, ModelAndView modelAndView) throws Exception {
	log.info("LoginInterceptor 目标方法执行后执行");
	}

@Override
public void afterCompletion(HttpServletRequest request,HttpServletResponse response, Object handler, Exception ex) throws Exception {
	log.info("LoginInterceptor 视图渲染完毕后执行，最后执行");
	}
}

@Configuration
public class WebConfig implements WebMvcConfigurer {

//⾃定义的拦截器对象
@Autowired
private LoginInterceptor loginInterceptor;

@Override
public void addInterceptors(InterceptorRegistry registry) {
	//注册⾃定义拦截器对象
	registry.addInterceptor(loginInterceptor).addPathPatterns("/**");//设置拦截器拦截的请求路径（ /** 表示拦截所有请求）
	}
}

import org.springframework.beans.factory.annotation.Autowired;
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 WebConfig implements WebMvcConfigurer {
	//⾃定义的拦截器对象
	@Autowired
	private LoginInterceptor loginInterceptor;
	
	@Override
	public void addInterceptors(InterceptorRegistry registry) {
	//注册⾃定义拦截器对象
	registry.addInterceptor(loginInterceptor)
		.addPathPatterns("/**")
		.excludePathPatterns("/user/login");//设置拦截器拦截的请求路径
	(/** 表示拦截所有请求)
	}
}