# http-swagger

**Repository Path**: mirrors_jeffreydwalter/http-swagger

## Basic Information

- **Project Name**: http-swagger
- **Description**: Default net/http wrapper to automatically generate RESTful API documentation with Swagger 2.0.
- **Primary Language**: Unknown
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2022-04-02
- **Last Updated**: 2026-03-29

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# http-swagger

Default net/http wrapper to automatically generate RESTful API documentation with Swagger 2.0.

[![Build Status](https://github.com/swaggo/http-swagger/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/features/actions)
[![Codecov branch](https://img.shields.io/codecov/c/github/swaggo/http-swagger/master.svg)](https://codecov.io/gh/swaggo/http-swagger)
[![Go Report Card](https://goreportcard.com/badge/github.com/swaggo/http-swagger)](https://goreportcard.com/report/github.com/swaggo/http-swagger)
[![GoDoc](https://godoc.org/github.com/swaggo/http-swagger?status.svg)](https://godoc.org/github.com/swaggo/http-swagger)
[![Release](https://img.shields.io/github/release/swaggo/http-swagger.svg?style=flat-square)](https://github.com/swaggo/http-swagger/releases)

## Usage

### Start using it
1. Add comments to your API source code, [See Declarative Comments Format](https://github.com/swaggo/swag#declarative-comments-format).
2. Download [Swag](https://github.com/swaggo/swag) for Go by using:

```sh
$ go get github.com/swaggo/swag/cmd/swag
```

3. Run the [Swag](https://github.com/swaggo/swag) in your Go project root folder which contains `main.go` file, [Swag](https://github.com/swaggo/swag) will parse comments and generate required files(`docs` folder and `docs/doc.go`).
```sh
$ swag init
```
4.Download [http-swagger](https://github.com/swaggo/http-swagger) by using:
```sh
$ go get -u github.com/swaggo/http-swagger
```
And import following in your code:

```go
import "github.com/swaggo/http-swagger" // http-swagger middleware
```

### Canonical example:

```go
package main

import (
	"net/http"

	"github.com/go-chi/chi"
	"github.com/swaggo/http-swagger"
	_ "github.com/swaggo/http-swagger/example/go-chi/docs" // docs is generated by Swag CLI, you have to import it.
)

// @title Swagger Example API
// @version 1.0
// @description This is a sample server Petstore server.
// @termsOfService http://swagger.io/terms/

// @contact.name API Support
// @contact.url http://www.swagger.io/support
// @contact.email support@swagger.io

// @license.name Apache 2.0
// @license.url http://www.apache.org/licenses/LICENSE-2.0.html

// @host petstore.swagger.io
// @BasePath /v2
func main() {
	r := chi.NewRouter()

	r.Get("/swagger/*", httpSwagger.Handler(
		httpSwagger.URL("http://localhost:1323/swagger/doc.json"), //The url pointing to API definition
	))

	http.ListenAndServe(":1323", r)
}

```

5. Run it, and browser to http://localhost:1323/swagger/index.html, you can see Swagger 2.0 Api documents.

![swagger_index.html](https://user-images.githubusercontent.com/8943871/36250587-40834072-1279-11e8-8bb7-02a2e2fdd7a7.png)

### Optional configuration

As documented [here](https://swagger.io/docs/open-source-tools/swagger-ui/usage/configuration/), you can customize `SwaggerUI` with options and plugins. This package supports that customization with the `Plugins` and `UIConfig` options. These may be set to generate plugin lines and configuration parameters in the generated `SwaggerUI` JavaScript.

In addition, `BeforeScript` and `AfterScript` options may be used to generate JavaScript before and after `SwaggerUIBundle` creation, respectively. `BeforeScript` may be used to declare a plugin, for example, and `AfterScript` may be used to run a block of JavaScript on page load.

#### A trivial example

To illustrate these options, take the following code:

```go
package main

import (
	"net/http"

	"github.com/go-chi/chi"
	"github.com/swaggo/http-swagger"
	_ "github.com/swaggo/http-swagger/example/go-chi/docs"
)

// @title Swagger Example API
// @version 1.0
// @description This is a sample server Petstore server.
// @termsOfService http://swagger.io/terms/

// @contact.name API Support
// @contact.url http://www.swagger.io/support
// @contact.email support@swagger.io

// @license.name Apache 2.0
// @license.url http://www.apache.org/licenses/LICENSE-2.0.html

// @host petstore.swagger.io
// @BasePath /v2
func main() {
	r := chi.NewRouter()

	r.Get("/swagger/*", httpSwagger.Handler(
		httpSwagger.URL("http://localhost:1323/swagger/doc.json"),
		httpSwagger.BeforeScript(`const SomePlugin = (system) => ({
    // Some plugin
  });
`),
		httpSwagger.AfterScript(`const someOtherCode = function(){
    // Do something
  };
  someOtherCode();`),
		httpSwagger.Plugins([]string{
			"SomePlugin",
			"AnotherPlugin",
		}),
		httpSwagger.UIConfig(map[string]string{
			"showExtensions":        "true",
			"onComplete":            `() => { window.ui.setBasePath('v3'); }`,
			"defaultModelRendering": `"model"`,
		}),
	))

	http.ListenAndServe(":1323", r)
}

```

When you then open Swagger UI and inspect the source JavaScript, you would see the following:

```javascript
window.onload = function() {
  const SomePlugin = (system) => ({
    // Some plugin
  });

  const ui = SwaggerUIBundle({
    url: "swagger.json",
    deepLinking:  false ,
    docExpansion: "none",
    dom_id: "#swagger-ui-id",
    validatorUrl: null,
    persistAuthorization: false,
    presets: [
      SwaggerUIBundle.presets.apis,
      SwaggerUIStandalonePreset
    ],
    plugins: [
      SwaggerUIBundle.plugins.DownloadUrl,
      SomePlugin,
      AnotherPlugin
    ],
    defaultModelRendering: "model",
    onComplete: () => { window.ui.setBasePath('v3'); },
    showExtensions: true,
    layout: "StandaloneLayout"
  })

  window.ui = ui
  const someOtherCode = function(){
    // Do something
  };
  someOtherCode();
}
```

#### A practical example

To illustrate a real use case, these options make it possible to dynamically set the API base path in the Swagger doc. The Swagger UI project has an [open issue on how to achieve this with a plugin](https://github.com/swagger-api/swagger-ui/issues/5981). That may be done as follows:

```go
package main

import (
	"fmt"
	"net/http"
	"net/url"

	"github.com/go-chi/chi"
	"github.com/swaggo/http-swagger"
	_ "github.com/swaggo/http-swagger/example/go-chi/docs"
)

// @title Swagger Example API
// @version 1.0
// @description This is a sample server Petstore server.
// @termsOfService http://swagger.io/terms/

// @contact.name API Support
// @contact.url http://www.swagger.io/support
// @contact.email support@swagger.io

// @license.name Apache 2.0
// @license.url http://www.apache.org/licenses/LICENSE-2.0.html

// @host petstore.swagger.io
// @BasePath /v2
func main() {
	r := chi.NewRouter()

	uri, err := url.Parse("http://localhost:1323/api/v3")
	if err != nil {
		panic(err)
	}

	r.Get("/swagger/*", httpSwagger.Handler(
		httpSwagger.URL("http://localhost:1323/swagger/doc.json"),
		httpSwagger.BeforeScript(`const UrlMutatorPlugin = (system) => ({
  rootInjects: {
    setScheme: (scheme) => {
      const jsonSpec = system.getState().toJSON().spec.json;
      const schemes = Array.isArray(scheme) ? scheme : [scheme];
      const newJsonSpec = Object.assign({}, jsonSpec, { schemes });

      return system.specActions.updateJsonSpec(newJsonSpec);
    },
    setHost: (host) => {
      const jsonSpec = system.getState().toJSON().spec.json;
      const newJsonSpec = Object.assign({}, jsonSpec, { host });

      return system.specActions.updateJsonSpec(newJsonSpec);
    },
    setBasePath: (basePath) => {
      const jsonSpec = system.getState().toJSON().spec.json;
      const newJsonSpec = Object.assign({}, jsonSpec, { basePath });

      return system.specActions.updateJsonSpec(newJsonSpec);
    }
  }
});`),
		httpSwagger.Plugins([]string{"UrlMutatorPlugin"}),
		httpSwagger.UIConfig(map[string]string{
			"onComplete": fmt.Sprintf(`() => {
    window.ui.setScheme('%s');
    window.ui.setHost('%s');
    window.ui.setBasePath('%s');
  }`, uri.Scheme, uri.Host, uri.Path),
		}),
	))

	http.ListenAndServe(":1323", r)
}

```