@Configuration

public class WebConfig  extends WebMvcConfigurerAdapter{

    @Autowired

    UserArgumentResolver userArgumentResolver;

    @Override

    public void addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers) {

        argumentResolvers.add(userArgumentResolver);

    }

}

package com.cxy.config;

import javax.servlet.http.Cookie;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import com.cxy.domain.MiaoshaUser;

import com.cxy.service.MiaoshaUserService;

import org.apache.commons.lang3.StringUtils;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.core.MethodParameter;

import org.springframework.stereotype.Service;

import org.springframework.web.bind.support.WebDataBinderFactory;

import org.springframework.web.context.request.NativeWebRequest;

import org.springframework.web.method.support.HandlerMethodArgumentResolver;

import org.springframework.web.method.support.ModelAndViewContainer;

@Service

public class UserArgumentResolver implements HandlerMethodArgumentResolver {

    @Autowired

    MiaoshaUserService userService;

    public boolean supportsParameter(MethodParameter parameter) {

        Class<?> clazz = parameter.getParameterType();

        return clazz==MiaoshaUser.class;

    }

    public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer,

            NativeWebRequest webRequest, WebDataBinderFactory binderFactory) throws Exception {

        HttpServletRequest request = webRequest.getNativeRequest(HttpServletRequest.class);

        HttpServletResponse response = webRequest.getNativeResponse(HttpServletResponse.class);

        String paramToken = request.getParameter(MiaoshaUserService.COOKI_NAME_TOKEN);

        String cookieToken = getCookieValue(request, MiaoshaUserService.COOKI_NAME_TOKEN);

        if(StringUtils.isEmpty(cookieToken) && StringUtils.isEmpty(paramToken)) {

            return null;

        }

        String token = StringUtils.isEmpty(paramToken)?cookieToken:paramToken;

        return userService.getByToken(response, token);

    }

    private String getCookieValue(HttpServletRequest request, String cookiName) {

        Cookie[]  cookies = request.getCookies();

        if(cookies == null || cookies.length <= ){

            return null;

        }

        for(Cookie cookie : cookies) {

            if(cookie.getName().equals(cookiName)) {

                return cookie.getValue();

            }

        }

        return null;

    }

}

package com.cxy.config;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.context.annotation.Configuration;

import org.springframework.web.method.support.HandlerMethodArgumentResolver;

import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import java.util.List;

@Configuration

public class WebConfig1 implements WebMvcConfigurer{

    @Autowired

    UserArgumentResolver userArgumentResolver;

    @Override

    public void addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers) {

        argumentResolvers.add(userArgumentResolver);

    }

}