alibaba/Sentinel

Support param flow rules for web APIs in Spring Web controller

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#1734 opened on Sep 15, 2020

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 (3 comments) (0 reactions) (0 assignees)Java (23,109 stars) (8,150 forks)batch import
area/integrationsgood first issuekind/enhancement

Description

Issue Description

Type: bug report

Describe what happened (or what feature you want)

Describe what you expected to happen

在配置文件已配置全路径资源的情况下 image

image 添加2个热点限流规则。 出现的情况 ：1、以url作为资源名，规则不生效 (其他规则以url作为资源名可以生效，如流控、降级等)
2、以@SentinelResource注解定义的name作为资源名，规则生效

image

这种方式限制了动态添加热点规则，需要在项目中硬编码。

希望可以得到解决方法。谢谢~

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

Tell us your environment

spring-cloud-starter-alibaba-sentinel 2.2.1

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Contributor guide

Tech stack
javaspring
Domain
backendapi
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
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.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
JavaSpringSentinelParam flow rules
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25
Research direction
Investigate how param flow rules are matched against resource names in the Spring Web integration. The issue suggests that rules using URL patterns as resource names do not trigger, while @SentinelResource annotations work. The relevant code is in the `sentinel spring webmvc adapter` module, specifically the `HandlerInterceptor` implementation. Check the logic that extracts and matches resource names from HTTP requests.