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构建API服务

创建greet服务​

$ cd ~/go-zero-demo
$ go mod init go-zero-demo
$ goctl api new greet
Done.

查看一下greet服务的结构

$ cd greet
$ tree
.
├── etc
│   └── greet-api.yaml
├── greet.api
├── greet.go
└── internal
    ├── config
    │   └── config.go
    ├── handler
    │   ├── greethandler.go
    │   └── routes.go
    ├── logic
    │   └── greetlogic.go
    ├── svc
    │   └── servicecontext.go
    └── types
        └── types.go

由以上目录结构可以观察到，greet服务虽小，但"五脏俱全"。接下来我们就可以在greetlogic.go中编写业务代码了。

编写逻辑​

$ vim ~/go-zero-demo/greet/internal/logic/greetlogic.go
func (l *GreetLogic) Greet(req types.Request) (*types.Response, error) {
    return &types.Response{
        Message: "Hello go-zero",
    }, nil
}

启动并访问服务​

  • 启动服务
$ cd ~/go-zero-demo/greet
$ go run greet.go -f etc/greet-api.yaml
Starting server at 0.0.0.0:8888...
  • 访问服务
$ curl -i -X GET \
  http://localhost:8888/from/you
HTTP/1.1 200 OK
Content-Type: application/json
Date: Sun, 07 Feb 2021 04:31:25 GMT
Content-Length: 27

{"message":"Hello go-zero"}

源码​

greet源码