Swagger

Swagger是干嘛的,请看官网或问谷歌。

Swagger的主要工作流程是:

  1. 编写swagger文档,兼容json/yaml两个格式,官方提供在线编辑器 -> Swagger Editor

  2. 然后通过SwaggerUI请求第一步编写的swagger文档 -> Swagger UI

so,我们要想用Swagger就必须编写swagger文档,这个时候问题就来了,看看官方的例子:

{
    "swagger": "2.0",
    "info": {
        "title": "Uber API",
        "description": "Move your app forward with the Uber API",
        "version": "1.0.0"
    },
    "host": "api.uber.com",
    "schemes": [
        "https"
    ],
    "basePath": "/v1",
    "produces": [
        "application/json"
    ],
    "paths": {
        "/products": {
            "get": {
                "summary": "Product Types",
                "description": "The Products endpoint returns information about the *Uber* products\noffered at a given location. The response includes the display name\nand other details about each product, and lists the products in the\nproper display order.\n",
                "parameters": [
                    {
                        "name": "latitude",
                        "in": "query",
                        "description": "Latitude component of location.",
                        "required": true,
                        "type": "number",
                        "format": "double"
                    },
                    {
                        "name": "longitude",
                        "in": "query",
                        "description": "Longitude component of location.",
                        "required": true,
                        "type": "number",
                        "format": "double"
                    }
                ],
                "tags": [
                    "Products"
                ],
                "responses": {
                    "200": {
                        "description": "An array of products",
                        "schema": {
                            "type": "array",
                            "items": {
                                "$ref": "#/definitions/Product"
                            }
                        }
                    },
                    "default": {
                        "description": "Unexpected error",
                        "schema": {
                            "$ref": "#/definitions/Error"
                        }
                    }
                }
            }
        }
    },
    "definitions": {
        "Product": {
            "type": "object",
            "properties": {
                "product_id": {
                    "type": "string",
                    "description": "Unique identifier representing a specific product for a given latitude & longitude. For example, uberX in San Francisco will have a different product_id than uberX in Los Angeles."
                },
                "description": {
                    "type": "string",
                    "description": "Description of product."
                },
                "display_name": {
                    "type": "string",
                    "description": "Display name of product."
                },
                "capacity": {
                    "type": "string",
                    "description": "Capacity of product. For example, 4 people."
                },
                "image": {
                    "type": "string",
                    "description": "Image URL representing the product."
                }
            }
        },
        "Error": {
            "type": "object",
            "properties": {
                "code": {
                    "type": "integer",
                    "format": "int32"
                },
                "message": {
                    "type": "string"
                },
                "fields": {
                    "type": "string"
                }
            }
        }
    }
}

看完你还想写吗????是不是还不如写word文档?(不过真要我选,我真的会选写这个,够逼格~.~) 我们想想之前写的接口文档是不是经常会碰到_文档和真正的接口不同步,因为谁都有改了代码忘改文档_的时候,这是在所难免的。 所以我们如果真要编辑上面这份swagger文档也还是会有这个坑。如何避免这个坑呢?当然是直接通过代码生成文档啦,比如javadoc,当然javadoc导出来的格式远远达不到我们接口文档所需的要求。

既然swagger是我们所需要的,我们就要解决怎么通过代码生成swagger文档这个问题。 Swagger提供了Swagger-Annotations来解决这个问题,我们可以在编写Controller的时候加上Swagger注解,就可以通过Swagger-Core提供的API生成swagger文档。 Swagger-Annotations的依赖:

根据Swagger注解生成文档有两种形式:

  1. swagger-springmvc 现在已升级为springfox

  2. swagger-maven-plugin 第一种会在项目启动的时候创建一个api-doc的接口访问路径然后配合SwaggerUI,这种方式需要SpringMVC3.2以上的版本 第二种会在项目打包的时候生成一份swagger文档,然后根据swagger文档配合SwaggerUI做你想做的。

网上大把的第一种教程。我们项目特殊原因,只能选择后者:

利用Swagger Maven Plugin生成Rest API文档

首先在项目的pom中添加插件:

里面用到的模板是官方demo(swagger-maven-example)中的模板,模板是啥意思不知道就去看插件的官方介绍。

添加好插件后直接在项目下执行mvn clean compile就会得到generated/swagger-ui/swagger.json

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