小编kri*_*han的帖子

获取错误消息 - 必须使用适当的属性或方法修改“接受”标头。我在邮递员中得到响应，但没有进入 MVC 控制器，我有一个基本的身份验证 api，带有以下标头。同时在请求中添加接受标头时出现错误

Content-Type:  application/vnd.onem2m-res+json;ty=4;
Accept: application/vnd.onem2m-res+json;
Cache-Control: no-cache
X-M2M-RI: 9900001
Authorization: Basic QzdBQUNFO
X-M2M-Origin: C7AACE9-25

代码

WebRequest req = WebRequest.Create(@"url");
                req.Method = "GET";
                req.Headers["Authorization"] = "Basic " + "QzdBQUNFO";
                req.ContentType = "application/vnd.onem2m-res+json";
                req.Headers.Add("Accept", "application/vnd.onem2m-res+json;");
                req.Headers["Cache-Control"] = "no-cache";
                req.Headers["X-M2M-RI"] = "9900001";
                req.Headers["X-M2M-Origin"] = "C7AACE9-25";
                HttpWebResponse resp = req.GetResponse() as HttpWebResponse;
                var encoding = resp.CharacterSet == "" ? Encoding.UTF8 : Encoding.GetEncoding(resp.CharacterSet);

我有一个现有的表,我需要添加自动增量(1,1)的主列.如何编写查询以插入一个带有标识(1,1)的主键列.得到错误 -

"关键字'IDENTITY'附近的语法不正确".

table ALTER TABLE OLTMS_0B8DF2
        ADD PRIMARY KEY (ID);

我试过这样的

ALTER TABLE OLTMS_0B8DF2
ADD PRIMARY KEY (ID) int IDENTITY(1,1);

得到错误