asp.net webapi+swagger+OAuth2.0

c.documentfilter<swaggerdoctag>();

 /// <summary>
    /// swagger注释帮助类
    /// </summary>
    public class swaggerdoctag : idocumentfilter
    {
        /// <summary>
        /// 添加附加注释
        /// </summary>
        public void apply(swaggerdocument swaggerdoc, schemaregistry schemaregistry, iapiexplorer apiexplorer)
        {
            //swaggerdoc.tags = new list<tag>
            //{
            //    //添加对应的控制器描述 这个是我好不容易在issues里面翻到的
            //    new tag { name = "home", description = "后台" },
            //    new tag { name = "client", description = "客户端" },
            //    new tag { name = "system", description = "系统" }
            //};
            swaggerdoc.tags = getcontrollerdesc();
        }

        /// <summary>
        /// 从xml注释中读取控制器注释
        /// </summary>
        /// <returns></returns>
        private list<tag> getcontrollerdesc()
        {
            list<tag> taglist = new list<tag>();

            var xmlpath = string.format(string.format("{0}/bin/eternal.webapi.xml", system.appdomain.currentdomain.basedirectory));
            if (!file.exists(xmlpath))//检查xml注释文件是否存在
                return taglist;

            xmldocument xmldoc = new xmldocument();
            xmldoc.load(xmlpath);

            string membername = string.empty;//xml三级节点的name属性值
            string controllername = string.empty;//控制器完整名称
            string key = string.empty;//控制器去controller名称
            string value = string.empty;//控制器注释

            foreach (xmlnode node in xmldoc.selectnodes("//member"))//循环三级节点member
            {
                membername = node.attributes["name"].value;
                if (membername.startswith("t:"))//t:开头的代表类
                {
                    string[] arrpath = membername.split('.');
                    controllername = arrpath[arrpath.length - 1];
                    if (controllername.endswith("controller"))//controller结尾的代表控制器
                    {
                        xmlnode summarynode = node.selectsinglenode("summary");//注释节点
                        key = controllername.remove(controllername.length - "controller".length, "controller".length);
                        if (summarynode != null && !string.isnullorempty(summarynode.innertext) && !taglist.contains(new tag { name = key }))
                        {
                            value = summarynode.innertext.trim();
                            taglist.add(new tag { name = key, description = value });
                        }
                    }
                }
            }
            return taglist;
        }