4dkankan-after-sale/src/main/java/com/fdkankan/sale/controller/BaseController.java

package com.fdkankan.sale.controller;

import com.auth0.jwt.JWT;
import com.auth0.jwt.interfaces.DecodedJWT;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.fdkankan.sale.common.ResultCode;
import com.fdkankan.sale.entity.SysUser;
import com.fdkankan.sale.exception.BusinessException;
import com.fdkankan.sale.service.ISysUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

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

import static com.baomidou.mybatisplus.core.toolkit.IdWorker.getId;

@Component
public class BaseController {
    @Autowired
    protected HttpServletRequest request;
    @Autowired
    ISysUserService sysUserService;

    @Autowired
    protected HttpServletResponse response;

    protected String getToken(){
        return request.getHeader("token");
    }

    protected Long getUserId(){
        String token = request.getHeader("token");
        if(StringUtils.isBlank(token)){
            return null;
        }
        try {
            DecodedJWT jwt = JWT.decode(token);
            Long userId = jwt.getClaim("userId").asLong();
            return sysUserService.getByManageId(userId).getId();
        }catch (Exception e){
            return null;
        }
    }
    protected SysUser getUser(){
        String token = request.getHeader("token");
        if(StringUtils.isBlank(token)){
            return null;
        }
        try {
            DecodedJWT jwt = JWT.decode(token);
            Long userId = jwt.getClaim("userId").asLong();
            return sysUserService.getByManageId(userId);
        }catch (Exception e){
            return null;
        }

    }

    public static void main(String[] args) {
        String token = "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJsb2dpblR5cGUiOiJsb2dpbiIsImxvZ2luSWQiOjEsImRldmljZSI6ImRlZmF1bHQtZGV2aWNlIiwiZWZmIjotMSwicm5TdHIiOiJ5TUJRdkdDQzk2OURZNDJOaGVueEhuYzI4VUp4Q3MxYSIsInVzZXJJZCI6MSwiaXNBZG1pbiI6MSwidXNlck5hbWUiOiJzdXBlci1hZG1pbiIsIm5pY2tOYW1lIjoi6LaF57qn566h55CG5ZGYIn0.hnLrJoVWLwkWIwWdlUoBoWn2-ETepyI9l5AiLx3ji8M";
        DecodedJWT jwt = JWT.decode(token);
        Long userId = jwt.getClaim("userId").asLong();
        System.out.println(userId);
    }

}