Nacos Client 2.3.2 shades `org.springframework.http.HttpHeaders` causing NoSuchMethodError with Spring Boot 3.2.x

[Wrathur]

Describe the bug
In a Spring Boot 3.2.5 + Spring Cloud Alibaba 2023.0.1.0 project, using Spring Cloud Gateway with Nacos discovery results in:
java.lang.NoSuchMethodError: 'java.util.Set org.springframework.http.HttpHeaders.headerSet()'
at org.springframework.cloud.gateway.filter.headers.ForwardedHeadersFilter.filter(ForwardedHeadersFilter.java:99)

Expected behavior
The gateway should forward requests without throwing NoSuchMethodError.

Actually behavior
Gateway fails with the described error.

How to Reproduce

1. Create a Spring Boot 3.2.5 project with Spring Cloud 2023.0.4 and Spring Cloud Alibaba 2023.0.1.0.
2. Add a gateway module using spring-cloud-starter-gateway and spring-cloud-starter-alibaba-nacos-discovery.
3. Start Nacos server, register a simple service.
4. Access any route through the gateway; observe the NoSuchMethodError.

Root cause analysis:
The nacos-client-2.3.2.jar shades org.springframework.http.HttpHeaders without relocating the package, conflicting with the application's own Spring 6 classes.

Desktop

• OS: Windows 11
• JDK: 17.0.18
• Spring Boot: 3.2.5
• Spring Cloud: 2023.0.4
• Spring Cloud Alibaba: 2023.0.1.0
• Nacos Client: 2.3.2 (embedded in the starter)

Suggested fix:

• Avoid shading Spring classes, or if shading is necessary, relocate them (e.g., com.alibaba.nacos.shaded.org.springframework.http) to prevent conflicts.
• Upgrade the shaded Spring version to 6.x to maintain method compatibility.

Additional context
This issue is resolved in later versions (Nacos Client 2.4.3) where the shading is no longer present.

[KomachiSion]

I think it's not nacos' problem, nacos client don't depend spring directly.

If there are some classes depend springframework package, it should be a bug. If new version already fixed, please upgrade to version to used.