[Bug] server reflection error

[nfw999]

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Apache Dubbo Component

Java SDK (apache/dubbo)

Dubbo Version

Dubbo 3.3.1、3.3.2、3.3.3 3.3.3 , jdk8

Steps to reproduce this issue

Create a project using the official scaffolding, set the Dubbo version to 3.3.1 or higher (Dubbo 3.3.0 is ok),set dubbo.tri.builtin.service.init=true.

Use grpcurl to execute the following command.

grpcurl -plaintext localhost:50051 list

What you expected to happen

The details of the exception log are as follows

2025-02-06 16:46:28`dealer.barn`springboot-api-test`ERROR`` [DUBBO] An error occurred while processing the http request with GrpcHttp2ServerTransportListener, Http2MetadataFrame{method='POST', path='/grpc.reflection.v1alpha.ServerReflection/ServerReflectionInfo', contentType='application/grpc', streamId=3, endStream=false}, method=ServerReflectionInfo(ServerReflectionRequest), dubbo version: 3.3.3, current host: 10.xx.xx.xx, error code: 99-0. This may be caused by , go to https://dubbo.apache.org/faq/99/0 to find instructions. `
java.lang.NullPointerException: null
	at org.apache.dubbo.common.utils.UrlUtils.computeServiceAttribute(UrlUtils.java:694) ~[dubbo-3.3.3.jar:3.3.3]
	at org.apache.dubbo.rpc.protocol.tri.h12.AbstractServerTransportListener.buildRpcInvocation(AbstractServerTransportListener.java:281) ~[dubbo-3.3.3.jar:3.3.3]
	at org.apache.dubbo.rpc.protocol.tri.h12.http2.GenericHttp2ServerTransportListener.buildHttpMessageListener(GenericHttp2ServerTransportListener.java:94) ~[dubbo-3.3.3.jar:3.3.3]
	at org.apache.dubbo.rpc.protocol.tri.h12.grpc.GrpcHttp2ServerTransportListener.buildHttpMessageListener(GrpcHttp2ServerTransportListener.java:113) ~[dubbo-3.3.3.jar:3.3.3]
	at org.apache.dubbo.rpc.protocol.tri.h12.AbstractServerTransportListener.lambda$onMetadata$0(AbstractServerTransportListener.java:108) ~[dubbo-3.3.3.jar:3.3.3]
	at org.apache.dubbo.common.threadpool.serial.SerializingExecutor.run(SerializingExecutor.java:105) [dubbo-3.3.3.jar:3.3.3]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_144]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_144]
	at org.apache.dubbo.common.threadlocal.InternalRunnable.run(InternalRunnable.java:39) [dubbo-3.3.3.jar:3.3.3]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_144]
2025-02-06 16:46:28`dealer.barn`springboot-api-test`ERROR`` [DUBBO] Exception while executing runnable org.apache.dubbo.rpc.protocol.tri.h12.AbstractServerTransportListener$$Lambda$1617/551996024@31c81cee, dubbo version: 3.3.3, current host: 10.xx.xx.xx, error code: 0-19. This may be caused by , go to https://dubbo.apache.org/faq/0/19 to find instructions. `
java.lang.NullPointerException: value
	at io.netty.util.internal.ObjectUtil.checkNotNull(ObjectUtil.java:39) ~[netty-common-4.1.112.Final.jar:4.1.112.Final]
	at io.netty.handler.codec.DefaultHeaders.set(DefaultHeaders.java:469) ~[netty-codec-4.1.112.Final.jar:4.1.112.Final]
	at org.apache.dubbo.remoting.http12.netty4.NettyHttpHeaders.set(NettyHttpHeaders.java:117) ~[dubbo-3.3.3.jar:3.3.3]
	at org.apache.dubbo.rpc.protocol.tri.h12.CompositeExceptionHandler.resolveGrpcStatus(CompositeExceptionHandler.java:82) ~[dubbo-3.3.3.jar:3.3.3]
	at org.apache.dubbo.rpc.protocol.tri.h12.ExceptionCustomizerWrapper.customizeGrpcStatus(ExceptionCustomizerWrapper.java:65) ~[dubbo-3.3.3.jar:3.3.3]
	at org.apache.dubbo.remoting.http12.AbstractServerHttpChannelObserver.customizeTrailers(AbstractServerHttpChannelObserver.java:334) ~[dubbo-3.3.3.jar:3.3.3]
	at org.apache.dubbo.remoting.http12.AbstractServerHttpChannelObserver.doOnCompleted(AbstractServerHttpChannelObserver.java:315) ~[dubbo-3.3.3.jar:3.3.3]
	at org.apache.dubbo.remoting.http12.AbstractServerHttpChannelObserver.onCompleted(AbstractServerHttpChannelObserver.java:301) ~[dubbo-3.3.3.jar:3.3.3]
	at org.apache.dubbo.remoting.http12.AbstractServerHttpChannelObserver.onError(AbstractServerHttpChannelObserver.java:132) ~[dubbo-3.3.3.jar:3.3.3]
	at org.apache.dubbo.rpc.protocol.tri.h12.http2.GenericHttp2ServerTransportListener.onError(GenericHttp2ServerTransportListener.java:154) ~[dubbo-3.3.3.jar:3.3.3]
	at org.apache.dubbo.rpc.protocol.tri.h12.AbstractServerTransportListener.onMetadataError(AbstractServerTransportListener.java:152) ~[dubbo-3.3.3.jar:3.3.3]
	at org.apache.dubbo.rpc.protocol.tri.h12.AbstractServerTransportListener.lambda$onMetadata$0(AbstractServerTransportListener.java:112) ~[dubbo-3.3.3.jar:3.3.3]
	at org.apache.dubbo.common.threadpool.serial.SerializingExecutor.run(SerializingExecutor.java:105) [dubbo-3.3.3.jar:3.3.3]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_144]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_144]
	at org.apache.dubbo.common.threadlocal.InternalRunnable.run(InternalRunnable.java:39) [dubbo-3.3.3.jar:3.3.3]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_144]

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[Stellar1999]

PTAL @oxsean
It appears that the absence of a ServiceModel during the initialization of the gRPC-related URL object caused a NullPointerException (NPE) in the following code:

HeaderFilter[] headerFilters =  
    UrlUtils.computeServiceAttribute(invoker.getUrl(), HEADER_FILTERS_CACHE, this::loadHeaderFilters);