springboot关于springmvc的拦截器配置

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先写个拦截器

public class MyInterceptor implements HandlerInterceptor{

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

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

	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
			throws Exception {
		System.out.println("拦截器发生作用");
		return true;
	}
	
}

 在springMvc配置里如下添加即可：

import org.springframework.context.annotation.Configuration;
import org.springframework.validation.Validator;
import org.springframework.validation.beanvalidation.LocalValidatorFactoryBean;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
@Configuration
public class MvcConfig implements WebMvcConfigurer {

	@Override
	public void addInterceptors(InterceptorRegistry registry) {
		registry.addInterceptor(new MyInterceptor())
		.addPathPatterns("/**")
		.excludePathPatterns("/aaa");
	}
}