alibaba/Sentinel

[BUG] springcloud-gateway sentinel 1.8.6版本报空指针异常

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#3556 opened on Sep 13, 2025

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 (2 comments) (0 reactions) (0 assignees)Java (23,109 stars) (8,150 forks)batch import
good first issuekind/bug

Description

Issue Description

Type: bug report

Describe what happened

Describe what you expected to happen

How to reproduce it (as minimally and precisely as possible)

  1. springcloud-gateway 3.1.4版本使用sentinel 1.8.6版本运行时会报空指针异常
  2. sentinel相关依赖如下所示：
  3. 异常如下所示： java.lang.NullPointerException: value at java.base/java.util.Objects.requireNonNull(Objects.java:246) ~[na:na] at reactor.util.context.Context2.put(Context2.java:46) ~[reactor-core-3.4.24.jar:3.4.24] at com.alibaba.csp.sentinel.adapter.reactor.SentinelReactorSubscriber.currentContext(SentinelReactorSubscriber.java:70) ~[sentinel-reactor-adapter-1.8.6.jar:na] at com.alibaba.csp.sentinel.adapter.reactor.SentinelReactorSubscriber.currentContext(SentinelReactorSubscriber.java:69) ~[sentinel-reactor-adapter-1.8.6.jar:na] at reactor.core.publisher.FluxPeek$PeekSubscriber.currentContext(FluxPeek.java:120) ~[reactor-core-3.4.24.jar:3.4.24] at reactor.core.publisher.InnerOperator.currentContext(InnerOperator.java:33) ~[reactor-core-3.4.24.jar:3.4.24] at reactor.core.publisher.InnerOperator.currentContext(InnerOperator.java:33) ~[reactor-core-3.4.24.jar:3.4.24] at reactor.core.publisher.InnerOperator.currentContext(InnerOperator.java:33) ~[reactor-core-3.4.24.jar:3.4.24]

Contributor guide

Tech stack
java
Domain
backendcloud
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
JavaSpring Cloud GatewaySentinel basicsReactor
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Investigate the NullPointerException in SentinelReactorSubscriber.currentContext at line 70 in the reactor adapter module. The stack trace indicates a null value being passed to Context2.put. Check if the issue is due to a null entry in the context or a missing null check. Consider replicating with Spring Cloud Gateway 3.1.4 and Sentinel 1.8.6 and examine the currentContext method flow.