add little app gateway check function

sl-express-gateway/src/main/java/com/sl/gateway/filter/CustomerTokenGatewayFilterFactory.java

@@ -1,15 +1,19 @@
 package com.sl.gateway.filter;
 
+import cn.hutool.core.map.MapUtil;
 import com.itheima.auth.sdk.dto.AuthUserInfoDTO;
 import com.sl.gateway.config.MyConfig;
 import com.sl.gateway.properties.JwtProperties;
 import com.sl.transport.common.constant.Constants;
+import com.sl.transport.common.util.JwtUtils;
+import com.sl.transport.common.util.ObjectUtil;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.cloud.gateway.filter.GatewayFilter;
 import org.springframework.cloud.gateway.filter.factory.AbstractGatewayFilterFactory;
 import org.springframework.stereotype.Component;
 
 import javax.annotation.Resource;
+import java.util.Map;
 
 /**
  * 用户端token拦截处理
@@ -32,7 +36,19 @@ public GatewayFilter apply(Object config) {
     @Override
     public AuthUserInfoDTO check(String token) {
         // 普通用户的token没有对接权限系统，需要自定实现
-        return null;
+        // 鉴权逻辑在用户端自行实现 网关统一放行
+        log.info("开始解析token {}", token);
+        Map<String, Object> claims = JwtUtils.checkToken(token, jwtProperties.getPublicKey());
+        if (ObjectUtil.isEmpty(claims)) {
+            //token失效
+            return null;
+        }
+
+        Long userId = MapUtil.get(claims, Constants.GATEWAY.USER_ID, Long.class);
+        //token解析成功，放行
+        AuthUserInfoDTO authUserInfoDTO = new AuthUserInfoDTO();
+        authUserInfoDTO.setUserId(userId);
+        return authUserInfoDTO;
     }
 
     @Override