如何在Golang中搭建多模块项目结构

myproject/
├── go.mod          # 主模块（可选）
├── cmd/
│   └── app1/
│       ├── main.go
│       └── go.mod  # 模块：example.com/myproject/cmd/app1
├── internal/
│   └── service/
│       ├── go.mod  # 模块：example.com/myproject/internal/service
│       └── handler.go
├── pkg/
│   └── utils/
│       ├── go.mod  # 模块：example.com/myproject/pkg/utils
│       └── helper.go
└── README.md

module example.com/myproject/cmd/app1
<p>go 1.21</p>
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                <p>require example.com/myproject/pkg/utils v0.0.0</p><p>replace example.com/myproject/pkg/utils => ../pkg/utils</p>

# 构建所有命令模块
build-all:
  cd cmd/app1 && go build -o ../../bin/app1
<h1>测试指定模块</h1><p>test-utils:
cd pkg/utils && go test .</p>

go 1.21
<p>use (
./cmd/app1
./pkg/utils
./internal/service
)</p>