程序包org.apache.skywalking.apm.network.common不存在

[yuanx1]

import org.apache.skywalking.apm.network.common.Command;确实不存在～！

[yuanx1]

导致编译报错～！

[kezhenxu94]

import org.apache.skywalking.apm.network.common.Command;确实不存在～！

@yuanx1 ENGLISH ONLY PLEASE.

And read the documentation (How to Build) carefully, they are automatically generated by protoc, read the documentation

https://github.com/apache/skywalking/blob/master/docs/en/guides/How-to-build.md

[yuanx1]

@kezhenxu94 Thank you~!

[yuanzhehong111]

@yuanx1 I want to know how you solved it . thank you.

[MajaChen]

I am pretty sure that this problem is caused by submodule not being init;
enter the base directory,and execute:
git submodule init
git submodule upadte

these commands will download code for proto

[CzyerChen]

I got the problem, and solved in this way.

1. remove related submodule dirs which you can see from config file.
   some of them may be blank.
   .gitmodules

[submodule "apm-protocol/apm-network/src/main/proto"]
	path = apm-protocol/apm-network/src/main/proto  -----here
	url = https://github.com/apache/skywalking-data-collect-protocol.git
[submodule "oap-server/server-query-plugin/query-graphql-plugin/src/main/resources/query-protocol"]
	path = oap-server/server-query-plugin/query-graphql-plugin/src/main/resources/query-protocol  -----here
	url = https://github.com/apache/skywalking-query-protocol.git
[submodule "test/e2e-v2/java-test-service/e2e-protocol/src/main/proto"]
	path = test/e2e-v2/java-test-service/e2e-protocol/src/main/proto  -----here
	url = https://github.com/apache/skywalking-data-collect-protocol.git
[submodule "skywalking-ui"]
	path = skywalking-ui  -----here
	url = https://github.com/apache/skywalking-booster-ui.git

2. do git submodule init and git submodule update again. Make sure that the submodule dirs are not blank
3. then follow the instruction to do ./mvnw clean package -Dmaven.test.skip.
   Hope you success