C# Swagger 生成接口文档

一直听说Swagger是做Web API文档的好工具，这次手里暂时没什么事，类体验下它的强大之处。下面是使用Swashbuckle.net 给asp.net web API添加文档的简要步骤。

参考地址：http://www.jianshu.com/p/3329b4126886

项目引入Swagger

Swashbuckle是Swagger在dotnet环境中的实现，在ASP.net项目中加入后即可支持Swagger/UI。5.X版本支持ASP.net, 6.X(beta)版本支持ASP.net Core. 目前项目使用ASP.net for IIS，所以使用了5.6的版本。 关于selfhost和Owin Swashbuckle 的readme有很清楚的描述，可以去查看源码

使用nuget加入Swashbuckle的引用

安装好以后，在App_Start目录下，会有一个SwaggerConfig.cs文件，SwaggerConfig类通过[assembly: PreApplicationStartMethod(typeof(SwaggerConfig), "Register")]启动时运行。

nuget添加完引用，无须任何配置，编译后，访问 http://localhost:52079/swagger（这里按照自己的项目启动端口更改） 即可看到所有API的文档说明。界面如图所示：

SwaggerConfig简单介绍

SwaggerConfig.cs文件会自动添加到项目的App_Start目录下，代码本身包含大量注释掉的代码，清除后，代码如下：

相关工程需要生成XML文档

在SwaggerConfig 的Register方法的EnableSwagger匿名函数中加上对应的XML文件，修改如下：

public class SwaggerConfig
    {
        public static void Register()
        {
            var thisAssembly = typeof(SwaggerConfig).Assembly;
            //获取项目文件路径
            var baseDirectory = System.Web.HttpContext.Current.Server.MapPath("~/App_Data");
            var commentsFileName = Assembly.GetExecutingAssembly().GetName().Name + ".XML";
            var commentsFile = Path.Combine(baseDirectory, commentsFileName);

            GlobalConfiguration.Configuration
                .EnableSwagger(c =>
                    {
                        //用于启用和设置Swagger的配置信息。
                        c.SingleApiVersion("v1", "APIUI");
                        //获取项目指定路径下xml文件
                        c.IncludeXmlComments(commentsFile);
                    })
                .EnableSwaggerUi(c =>
                    {
                        //用于启用UI界面。

                    });
        }
    }

上述代码把api工程的XML注释加入到Swagger中。一般我们会把viewmodel或者其他类型定义在不同的工程中，通过下面的代码可以继续加入其它xml注释文件。(对应功能需要启用XML文档文件生成)

汉化 SwaggerUI 

新增js,内容如下

'use strict';  

/**
 * Translator for documentation pages.
 *
 * To enable translation you should include one of language-files in your index.html
 * after <script src='lang/translator.js' type='text/javascript'></script>.
 * For example - <script src='lang/ru.js' type='text/javascript'></script>
 *
 * If you wish to translate some new texsts you should do two things:
 * 1. Add a new phrase pair ("New Phrase": "New Translation") into your language file (for example lang/ru.js). It will be great if you add it in other language files too.
 * 2. Mark that text it templates this way <anyHtmlTag data-sw-translate>New Phrase</anyHtmlTag> or <anyHtmlTag data-sw-translate value='New Phrase'/>.
 * The main thing here is attribute data-sw-translate. Only inner html, title-attribute and value-attribute are going to translate.
 *
 */
window.SwaggerTranslator = {
    _words: [],  

    translate: function () {
        var $this = this;
        $('[data-sw-translate]').each(function () {
            $(this).html($this._tryTranslate($(this).html()));
            $(this).val($this._tryTranslate($(this).val()));
            $(this).attr('title', $this._tryTranslate($(this).attr('title')));
        });
    },  

    _tryTranslate: function (word) {
        return this._words[$.trim(word)] !== undefined ? this._words[$.trim(word)] : word;
    },  

    learn: function (wordsMap) {
        this._words = wordsMap;
    }
};  

/* jshint quotmark: double */
window.SwaggerTranslator.learn({
    "Warning: Deprecated": "警告：已过时",
    "Implementation Notes": "实现备注",
    "Response Class": "响应类",
    "Status": "状态",
    "Parameters": "参数",
    "Parameter": "参数",
    "Value": "值",
    "Description": "描述",
    "Parameter Type": "参数类型",
    "Data Type": "数据类型",
    "Response Messages": "响应消息",
    "HTTP Status Code": "HTTP状态码",
    "Reason": "原因",
    "Response Model": "响应模型",
    "Request URL": "请求URL",
    "Response Body": "响应体",
    "Response Code": "响应码",
    "Response Headers": "响应头",
    "Hide Response": "隐藏响应",
    "Headers": "头",
    "Try it out!": "试一下！",
    "Show/Hide": "显示/隐藏",
    "List Operations": "显示操作",
    "Expand Operations": "展开操作",
    "Raw": "原始",
    "can't parse JSON.  Raw result": "无法解析JSON. 原始结果",
    "Model Schema": "模型架构",
    "Model": "模型",
    "apply": "应用",
    "Username": "用户名",
    "Password": "密码",
    "Terms of service": "服务条款",
    "Created by": "创建者",
    "See more at": "查看更多：",
    "Contact the developer": "联系开发者",
    "api version": "api版本",
    "Response Content Type": "响应Content Type",
    "fetching resource": "正在获取资源",
    "fetching resource list": "正在获取资源列表",
    "Explore": "浏览",
    "Show Swagger Petstore Example Apis": "显示 Swagger Petstore 示例 Apis",
    "Can't read from server.  It may not have the appropriate access-control-origin settings.": "无法从服务器读取。可能没有正确设置access-control-origin。",
    "Please specify the protocol for": "请指定协议：",
    "Can't read swagger JSON from": "无法读取swagger JSON于",
    "Finished Loading Resource Information. Rendering Swagger UI": "已加载资源信息。正在渲染Swagger UI",
    "Unable to read api": "无法读取api",
    "from path": "从路径",
    "server returned": "服务器返回"
});  

$(function () {
    window.SwaggerTranslator.translate();
});  

注：右键点击该js文件修改属性为嵌入的资源

修改 SwaggerConfig文件：修改如下

 public static void Register()
        {
            var thisAssembly = typeof(SwaggerConfig).Assembly;
            //获取项目文件路径
            var baseDirectory = AppDomain.CurrentDomain.BaseDirectory + @"\App_Data\";
            var commentsFileName = Assembly.GetExecutingAssembly().GetName().Name + ".XML";

            var commentsFile = Path.Combine(baseDirectory, commentsFileName);

            GlobalConfiguration.Configuration
                .EnableSwagger(c =>
                    {
                        //用于启用和设置Swagger的配置信息。
                        c.SingleApiVersion("v1", "APIUI");
                        //获取项目指定路径下xml文件
                        c.IncludeXmlComments(commentsFile);
                    })
                .EnableSwaggerUi(c =>
                    {
                        //用于启用UI界面上的东西。
                        //加载汉化的js文件，注意 swagger.js文件属性必须设置为“嵌入的资源”。 APIUI.Scripts.swagger.js依次是：项目名称->文件夹->js文件名
                        c.InjectJavaScript(Assembly.GetExecutingAssembly(), "APIUI.Scripts.swagger.js");
                    });
        }

效果如下：