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# goctl使用
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## goctl用途
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* 定义api请求
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* 根据定义的api自动生成golang(后端), java(iOS & Android), typescript(web & 晓程序),dart(flutter)
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* 生成MySQL CURD 详情见[goctl model模块](model/sql)
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## goctl使用说明
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### goctl 参数说明
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`goctl api [go/java/ts] [-api user/user.api] [-dir ./src]`
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> api 后面接生成的语言,现支持go/java/typescript
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>
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> -api 自定义api所在路径
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>
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> -dir 自定义生成目录
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#### API 语法说明
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```golang
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info(
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title: doc title
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desc: >
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doc description first part,
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doc description second part<
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version: 1.0
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)
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type int userType
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type user struct {
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name string `json:"user"` // 用户姓名
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}
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type student struct {
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name string `json:"name"` // 学生姓名
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}
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type teacher struct {
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}
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type (
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address struct {
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city string `json:"city"` // 城市
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}
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innerType struct {
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image string `json:"image"`
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}
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createRequest struct {
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innerType
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name string `form:"name"`
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age int `form:"age,optional"`
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address []address `json:"address,optional"`
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}
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getRequest struct {
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name string `path:"name"`
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age int `form:"age,optional"`
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}
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getResponse struct {
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code int `json:"code"`
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desc string `json:"desc,omitempty"`
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address address `json:"address"`
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service int `json:"service"`
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}
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)
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service user-api {
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@doc(
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summary: user title
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desc: >
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user description first part,
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user description second part,
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user description second line
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)
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@server(
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handler: GetUserHandler
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group: user
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)
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get /api/user/:name(getRequest) returns(getResponse)
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@server(
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handler: CreateUserHandler
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group: user
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)
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post /api/users/create(createRequest)
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}
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@server(
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jwt: Auth
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group: profile
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)
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service user-api {
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@doc(summary: user title)
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@server(
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handler: GetProfileHandler
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)
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get /api/profile/:name(getRequest) returns(getResponse)
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@server(
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handler: CreateProfileHandler
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)
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post /api/profile/create(createRequest)
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}
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service user-api {
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@doc(summary: desc in one line)
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@server(
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handler: PingHandler
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)
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head /api/ping()
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}
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```
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1. info部分:描述了api基本信息,比如Auth,api是哪个用途。
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2. type部分:type类型声明和golang语法兼容。
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3. service部分:service代表一组服务,一个服务可以由多组名称相同的service组成,可以针对每一组service配置group属性来指定service生成所在子目录。
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service里面包含api路由,比如上面第一组service的第一个路由,doc用来描述此路由的用途,GetProfileHandler表示处理这个路由的handler,
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`get /api/profile/:name(getRequest) returns(getResponse)` 中get代表api的请求方式(get/post/put/delete), `/api/profile/:name` 描述了路由path,`:name`通过
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请求getRequest里面的属性赋值,getResponse为返回的结构体,这两个类型都定义在2描述的类型中。
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#### api vscode插件
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开发者可以在vscode中搜索goctl的api插件,它提供了api语法高亮,语法检测和格式化相关功能。
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1. 支持语法高亮和类型导航。
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2. 语法检测,格式化api会自动检测api编写错误地方,用vscode默认的格式化快捷键(option+command+F)或者自定义的也可以。
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3. 格式化(option+command+F),类似代码格式化,统一样式支持。
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#### 根据定义好的api文件生成golang代码
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命令如下:
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`goctl api go -api user/user.api -dir user`
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```Plain Text
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.
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├── internal
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│ ├── config
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│ │ └── config.go
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│ ├── handler
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│ │ ├── pinghandler.go
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│ │ ├── profile
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│ │ │ ├── createprofilehandler.go
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│ │ │ └── getprofilehandler.go
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│ │ ├── routes.go
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│ │ └── user
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│ │ ├── createuserhandler.go
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│ │ └── getuserhandler.go
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│ ├── logic
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│ │ ├── pinglogic.go
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│ │ ├── profile
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│ │ │ ├── createprofilelogic.go
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│ │ │ └── getprofilelogic.go
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│ │ └── user
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│ │ ├── createuserlogic.go
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│ │ └── getuserlogic.go
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│ ├── svc
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│ │ └── servicecontext.go
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│ └── types
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│ └── types.go
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└── user.go
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```
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生成的代码可以直接跑,有几个地方需要改:
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* 在`servicecontext.go`里面增加需要传递给logic的一些资源,比如mysql, redis,rpc等
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* 在定义的get/post/put/delete等请求的handler和logic里增加处理业务逻辑的代码
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#### 根据定义好的api文件生成java代码
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```Plain Text
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goctl api java -api user/user.api -dir ./src
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```
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#### 根据定义好的api文件生成typescript代码
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```Plain Text
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goctl api ts -api user/user.api -dir ./src -webapi ***
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```
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ts需要指定webapi所在目录
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#### 根据定义好的api文件生成Dart代码
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```Plain Text
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goctl api dart -api user/user.api -dir ./src
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```
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