<system.webServer>
    <handlers>
      <remove name="OPTIONSVerbHandler" />
      <remove name="TRACEVerbHandler" />
    </handlers>
    <validation validateIntegratedModeConfiguration="false" />
    <!-- 兼容IIS版本 -->
    <modules runAllManagedModulesForAllRequests="true">
      <remove name="WebDAVModule" />
    </modules>
    <!-- 正式环境，不需要配置跨域 -->
    <httpProtocol>
      <customHeaders>
        <add name="Access-Control-Allow-Origin" value="*" />
        <add name="Access-Control-Allow-Headers" value="Origin, X-Requested-With, Content-Type, Accept, Authorization" />
        <add name="Access-Control-Allow-Methods" value="GET, POST, PUT, DELETE, OPTIONS" />
      </customHeaders>
    </httpProtocol>
  </system.webServer>

    public class TestController : ApiController
    {
        /// <summary>
        /// 测试接口
        /// </summary>
        [Route("api/name")]
        [HttpGet]
        [ResponseType(typeof(MyResp))]
        public IHttpActionResult GetName([FromUri]MyReq req)
        {
            var resp = new MyResp();
            resp.name = req.name;
            return Ok(resp);
        }
    }

    /// <summary>
    /// 测试请求
    /// </summary>
    public class MyReq
    {
        /// <summary>
        /// 输入姓名
        /// </summary>
        public string name { get; set; }
    }

    /// <summary>
    /// 测试响应
    /// </summary>
    public class MyResp
    {
        /// <summary>
        /// 输出姓名
        /// </summary>
        public string name { get; set; }
    }