SpringBoot3中token拦截器链的设计与实现步骤

import cn.hutool.json.JSONUtil;
import com.mijiu.commom.util.JwtUtils;
import com.mijiu.commom.util.UserHolder;
import com.mijiu.entity.User;
import io.jsonwebtoken.Claims;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.lang.Nullable;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
 
import java.util.Objects;
import java.util.concurrent.TimeUnit;
 
/**
 * @author mijiupro
 */
@Slf4j
@Component
public class RefreshTokenInterceptor implements HandlerInterceptor {
 
    private final JwtUtils jwtUtils;
    private final StringRedisTemplate stringRedisTemplate;
 
    public RefreshTokenInterceptor(JwtUtils jwtUtils, StringRedisTemplate stringRedisTemplate) {
        this.jwtUtils = jwtUtils;
        this.stringRedisTemplate = stringRedisTemplate;
    }
 
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
 
        // 1、从请求头中获取token
        String authorizationHeader = request.getHeader("authorization");
        if (StringUtils.isBlank(authorizationHeader)) {
            return true;
        }
        // 2.解析token
        Claims claims = jwtUtils.parseToken(authorizationHeader);
        if (Objects.isNull(claims)) {
            return true;
        }
 
        // 3.获取用户信息
        Integer userId = claims.get("userId", Integer.class);
 
        String userInfoJson = stringRedisTemplate.opsForValue().get("login:user:" + userId);
        if (StringUtils.isBlank(userInfoJson)) {
            return true;
        }
 
 
        // 4.刷新token
        String refreshToken = jwtUtils.refreshToken(authorizationHeader);
 
        response.setHeader("Access-Control-Expose-Headers", "Authorization");
        response.addHeader("Authorization", refreshToken);
        stringRedisTemplate.expire("login:user:" + userId, 30, TimeUnit.MINUTES);
 
        // 5.将用户信息存入本地线程方便获取
        User user = JSONUtil.toBean(userInfoJson, User.class);
        UserHolder.setInfoByToken(user);
 
        return true;
    }
 
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, @Nullable Exception ex) throws Exception {
        // 清理本地线程
        UserHolder.clear();
    }
}

import com.mijiu.commom.util.UserHolder;
import com.mijiu.entity.User;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import java.util.Objects;
 
 
/**
 * @author mijiupro
 */
 
@Component
public class LoginInterceptor implements HandlerInterceptor {
 
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        User user = UserHolder.getInfoByToken();
 
        if (Objects.isNull(user)) {
            response.setStatus(401);
            return false;
        }
 
        return true;
    }
}

import com.mijiu.commom.interceptor.LoginInterceptor;
import com.mijiu.commom.interceptor.RefreshTokenInterceptor;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
/**
 * @author mijiupro
 */
@Configuration
public class WebConfig implements WebMvcConfigurer {
    private final RefreshTokenInterceptor refreshTokenInterceptor;
 
    private final LoginInterceptor loginInterceptor;
 
    public WebConfig(RefreshTokenInterceptor refreshTokenInterceptor, LoginInterceptor loginInterceptor) {
        this.refreshTokenInterceptor = refreshTokenInterceptor;
        this.loginInterceptor = loginInterceptor;
    }
 
 
    @Override
    public void addInterceptors( InterceptorRegistry registry) {
        registry.addInterceptor(refreshTokenInterceptor)
                .addPathPatterns("/**").order(0);//设置拦截器对所有路径生效,执行顺序为0
 
        registry.addInterceptor(loginInterceptor)
                .excludePathPatterns("/captcha/graph-captcha")//排除用户登录获取验证码接口
                .excludePathPatterns("/","*/login","*.html","/images/**","/doc.html"
                        ,"/webjars/**","/swagger-resources","/swagger-resources/**","/v3/**")//排除登录获取静态资源、swagger接口文档等。
                .order(1);//设置拦截器对所有路径生效,执行顺序为1
 
 
    }
 
    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**") // 对所有路径生效
                .allowedOrigins("*") //允许所有源地址
                .allowedMethods("GET", "POST", "PUT", "DELETE") // 允许的请求方法
                .allowedHeaders("*"); // 允许的请求头
    }
}