Sharepoint在线API返回：HTTP错误400。请求标头字段太长
[英]Sharepoint online API returns: HTTP Error 400. A request header field is too long
问题描述
I have a loop that will loop through records in my DB, pulling information i need and then creating 3 folders & upload a file. 
我有一个循环，它将循环遍历数据库中的记录，提取所需的信息，然后创建3个文件夹并上传文件。
This works OK for like 40 records but then it starts erroring out with the below response back from sharepoint: <!DOCTYPE HTML PUBLIC \\"-//W3C//DTD HTML 4.01//EN\\"\\"http://www.w3.org/TR/html4/strict.dtd\\">\\r\\n<HTML><HEAD><TITLE>Bad Request</TITLE>\\r\\n<META HTTP-EQUIV=\\"Content-Type\\" Content=\\"text/html; charset=us-ascii\\"></HEAD>\\r\\n<BODY><h2>Bad Request - Header Field Too Long</h2>\\r\\n<hr><p>HTTP Error 400. A request header field is too long.</p>\\r\\n</BODY></HTML> 对于大约40条记录，此操作正常，但随后从共享点返回以下响应开始出错： <!DOCTYPE HTML PUBLIC \\"-//W3C//DTD HTML 4.01//EN\\"\\"http://www.w3.org/TR/html4/strict.dtd\\">\\r\\n<HTML><HEAD><TITLE>Bad Request</TITLE>\\r\\n<META HTTP-EQUIV=\\"Content-Type\\" Content=\\"text/html; charset=us-ascii\\"></HEAD>\\r\\n<BODY><h2>Bad Request - Header Field Too Long</h2>\\r\\n<hr><p>HTTP Error 400. A request header field is too long.</p>\\r\\n</BODY></HTML>
I am not sure whats going on, i read online its todo with cookies but i am using HTTPClient to send the request so i dont know how that would effect it? 我不确定发生了什么，我在线阅读了它的cookie待办事项，但是我正在使用HTTPClient发送请求，所以我不知道这会如何影响它？ I also seen onlne about changing the kestrel? 我还看到过关于改变茶est的信息吗？
Can anybody shed some light on this for me? 有人可以帮我一下吗？ Provide me with an easy but working solution? 为我提供一个简单但可行的解决方案？ I dont use CSOM for integrating to sharepoint online, i use HTTP Requests, below is a sample of how i interact with sharepoint. 我不使用CSOM集成到在线共享点，我使用HTTP请求，以下是我如何与共享点交互的示例。
It seems as if i get blocked or banned temporarily cause if i wait a good bit, i can then make the same request that failed previously, and it will work! 好像我暂时被阻止或禁止，如果我稍等片刻，那么我可以发出先前失败的相同请求，它将起作用！ So strange. 这么奇怪。
Sample code (Used to create a resource at Sharepoint): 示例代码（用于在Sharepoint创建资源）：
//Set Endpoint
var sharePointEndpoint = $"https://{hostname}/sites/{site}/_api/web/folders";
//Set default headers
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", sharePointToken); //Set token
client.DefaultRequestHeaders.Add("Accept", "application/json;odata=verbose");
//Pre-Body data setup
var metaData = new MetaDataModel();
metaData.type = "SP.Folder";
//Body data setup
var bodyModel = new ExpandoObject() as IDictionary<string, object>;
bodyModel.Add("__metadata", metaData);
bodyModel.Add("ServerRelativeUrl", location + "/" + directoryName + "/");
//Set content headers
HttpContent strContent = new StringContent(JsonConvert.SerializeObject(bodyModel));
strContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
strContent.Headers.ContentType.Parameters.Add(new NameValueHeaderValue("odata", "verbose"));
// Send request, grab response
var response = await client.PostAsync(sharePointEndpoint, strContent);
//Return response message
return response;
1 个解决方案
解决方案1
0 已采纳 2019-09-20 09:31:01
It turns out I needed to use Content-Length header when sending the request, once done I was able to successfully communicate with sharepoint without encountering this error. 事实证明，发送请求时我需要使用Content-Length标头，一旦完成，我就能够成功与sharepoint通信而不会遇到此错误。
More information here: https://social.technet.microsoft.com/Forums/en-US/26459f1c-945d-4112-9200-69c5a33a37ff/sharepoint-online-rest-api-returns-http-error-400-a-request-header-field-is-too-long?forum=sharepointdevelopment 此处的更多信息： https : //social.technet.microsoft.com/Forums/zh-CN/26459f1c-945d-4112-9200-69c5a33a37ff/sharepoint-online-rest-api-returns-http-error-400-a-请求标头字段太长？forum = sharepointdevelopment
Thanks. 谢谢。
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