通过curl在SharePoint创建文件夹遇curl: (56)连接重置错误求助

问题 #

在Azure DevOps发布流水线中尝试通过curl调用SharePoint API创建文件夹，因市场插件报错频繁改用此方案，但执行后等待约5分钟返回curl: (56) Recv failure: Connection was reset错误，无法正常创建文件夹。以下为原脚本及关键执行日志：

原脚本 #

set authorization=Authorization: Bearer $(System.AccessToken)
set accept=Accept: application/json;odata=verbose
set contentT=Content-Type:application/json
set content={"__metadata":{"type":"SP.Folder"},"ServerRelativeUrl":"Freigegebene Dokumente/Development-Release/Rel_$(ReleaseVersion)_$(Release.Attemptnumber)"}
call :strLen content cLen
set contentLen=Content-Length: %cLen%

curl -X POST -H %accept% -H %authorization% -H %contentT% -H %contentLen% -H %content% https://kenovawn.sharepoint.com/_api/web/folders --verbose

exit /b

:strLen
setlocal enabledelayedexpansion

:strLen_Loop
   if not "!%1:~%len%!"=="" set /A len+=1 & goto :strLen_Loop
(endlocal & set %2=%len%)
goto :eof

关键执行日志 #

2025-05-08T08:02:50.1895603Z * Could not resolve host: application
2025-05-08T08:02:50.1896615Z curl: (6) Could not resolve host: application
...
2025-05-08T08:02:52.4662228Z * Could not resolve host: Bearer
2025-05-08T08:02:52.4663155Z curl: (6) Could not resolve host: Bearer
...
2025-05-08T08:07:33.6224982Z * Recv failure: Connection was reset
2025-05-08T08:07:33.6228805Z curl: (56) Recv failure: Connection was reset
2025-05-08T08:07:33.7026082Z ##[error]Cmd.exe exited with code '56'.

问题分析与修复方案 #

• 参数格式错误：Header变量包含空格（如Accept: application/json;odata=verbose），未用引号包裹，导致curl将Header拆分为多个参数，把application当成目标主机，触发Could not resolve host错误。
• 请求体传递错误：将JSON请求体通过-H（Header参数）传递，而非-d（请求体参数），导致请求格式完全不符合API要求，服务器无法处理最终超时重置连接。
• 冗余的Content-Length计算：curl会自动计算并添加Content-Length头，手动计算容易出错，无需额外处理。

修正后的脚本 #

set "authorization=Authorization: Bearer $(System.AccessToken)"
set "accept=Accept: application/json;odata=verbose"
set "contentT=Content-Type:application/json"
set "content={"__metadata":{"type":"SP.Folder"},"ServerRelativeUrl":"Freigegebene Dokumente/Development-Release/Rel_$(ReleaseVersion)_$(Release.Attemptnumber)"}"

curl -X POST -H "%accept%" -H "%authorization%" -H "%contentT%" -d "%content%" https://kenovawn.sharepoint.com/_api/web/folders --verbose

exit /b

额外注意事项 #

• 确保Azure DevOps流水线服务主体对目标SharePoint站点有Contributor或更高权限，需在SharePoint站点权限设置中添加服务主体并授权。
• 确认$(System.AccessToken)在流水线中已启用：在流水线编辑页面的「代理作业」设置中，勾选「允许脚本访问OAuth令牌」。

内容的提问来源于stack exchange，提问作者MaxH