代码优化

distributed-print/src/main/java/com/qmth/distributed/print/auth/DistributedPrintSession.java

@@ -7,6 +7,7 @@ import com.qmth.teachcloud.common.entity.TBSession;
 import com.qmth.teachcloud.common.util.RedisUtil;
 
 import java.util.Collection;
+import java.util.Objects;
 
 public class DistributedPrintSession implements AccessEntity {
 
@@ -32,7 +33,7 @@ public class DistributedPrintSession implements AccessEntity {
     public String getSecret() {
         RedisUtil redisUtil = SpringContextHolder.getBean(RedisUtil.class);
         TBSession tbSession = (TBSession) redisUtil.getUserSession(identity);
-        return tbSession.getAccessToken();
+        return Objects.nonNull(tbSession) ? tbSession.getAccessToken() : null;
     }
 
     @Override