Bogdan U
153 lines
4.8 KiB
Markdown
153 lines
4.8 KiB
Markdown
# gin-swagger
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gin middleware to automatically generate RESTFUL API documentation with Swagger 2.0.
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[](https://github.com/features/actions)
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[](https://codecov.io/gh/swaggo/gin-swagger)
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[](https://goreportcard.com/report/github.com/swaggo/gin-swagger)
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[](https://godoc.org/github.com/swaggo/gin-swagger)
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## Usage
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### Start using it
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1. Add comments to your API source code, [See Declarative Comments Format](https://swaggo.github.io/swaggo.io/declarative_comments_format/).
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2. Download [Swag](https://github.com/swaggo/swag) for Go by using:
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```sh
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go get -u github.com/swaggo/swag/cmd/swag
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```
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3. Run the [Swag](https://github.com/swaggo/swag) at your Go project root path(for instance `~/root/go-peoject-name`),
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[Swag](https://github.com/swaggo/swag) will parse comments and generate required files(`docs` folder and `docs/doc.go`)
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at `~/root/go-peoject-name/docs`.
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```sh
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swag init
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```
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4. Download [gin-swagger](https://github.com/swaggo/gin-swagger) by using:
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```sh
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go get -u github.com/swaggo/gin-swagger
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go get -u github.com/swaggo/files
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```
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Import following in your code:
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```go
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import "github.com/swaggo/gin-swagger" // gin-swagger middleware
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import "github.com/swaggo/files" // swagger embed files
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```
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### Canonical example:
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Now assume you have implemented a simple api as following:
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```go
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// A get function which returns a hello world string by json
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func Helloworld(g *gin.Context) {
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g.JSON(http.StatusOK,"helloworld")
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}
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```
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So how to use gin-swagger on api above? Just follow the following guide.
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1. Add Comments for apis and main function with gin-swagger rules like following:
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```go
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// @BasePath /api/v1
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// PingExample godoc
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// @Summary ping example
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// @Schemes
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// @Description do ping
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// @Tags example
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// @Accept json
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// @Produce json
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// @Success 200 {string} Helloworld
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// @Router /example/helloworld [get]
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func Helloworld(g *gin.Context) {
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g.JSON(http.StatusOK,"helloworld")
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}
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```
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2. Use `swag init` command to generate a docs, docs generated will be stored at
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3. import the docs like this:
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I assume your project named `github.com/go-project-name/docs`.
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```go
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import (
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docs "github.com/go-project-name/docs"
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)
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```
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4. build your application and after that, go to http://localhost:8080/swagger/index.html ,you to see your Swagger UI.
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5. The full code and folder relatives here:
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```go
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package main
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import (
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"github.com/gin-gonic/gin"
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docs "github.com/go-project-name/docs"
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swaggerfiles "github.com/swaggo/files"
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ginSwagger "github.com/swaggo/gin-swagger"
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"net/http"
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)
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// @BasePath /api/v1
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// PingExample godoc
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// @Summary ping example
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// @Schemes
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// @Description do ping
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// @Tags example
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// @Accept json
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// @Produce json
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// @Success 200 {string} Helloworld
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// @Router /example/helloworld [get]
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func Helloworld(g *gin.Context) {
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g.JSON(http.StatusOK,"helloworld")
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}
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func main() {
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r := gin.Default()
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docs.SwaggerInfo.BasePath = "/api/v1"
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v1 := r.Group("/api/v1")
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{
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eg := v1.Group("/example")
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{
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eg.GET("/helloworld",Helloworld)
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}
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}
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r.GET("/swagger/*any", ginSwagger.WrapHandler(swaggerfiles.Handler))
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r.Run(":8080")
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}
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```
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Demo project tree, `swag init` is run at relative `.`
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```
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.
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├── docs
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│ ├── docs.go
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│ ├── swagger.json
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│ └── swagger.yaml
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├── go.mod
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├── go.sum
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└── main.go
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```
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## Configuration
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You can configure Swagger using different configuration options
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```go
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func main() {
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r := gin.New()
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ginSwagger.WrapHandler(swaggerFiles.Handler,
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ginSwagger.URL("http://localhost:8080/swagger/doc.json"),
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ginSwagger.DefaultModelsExpandDepth(-1)))
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r.Run()
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}
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```
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| Option | Type | Default | Description |
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|--------------------------|--------|------------|---------------------------------------------------------------------------|
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| URL | string | "doc.json" | URL pointing to API definition |
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| DocExpantion | string | "list" | Controls the default expansion setting for the operations and tags. It can be 'list' (expands only the tags), 'full' (expands the tags and operations) or 'none' (expands nothing). |
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| DeepLinking | bool | true | If set to true, enables deep linking for tags and operations. See the Deep Linking documentation for more information.|
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| DefaultModelsExpandDepth | int | 1 | Default expansion depth for models (set to -1 completely hide the models) |
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