仅在第一次连接 SharePoint onPremise 2013 时，我收到了401未经授权的错误，第二次正常。
它适用于SharePoint内部部署2010，但仅适用于2013
并且仅针对子站点URL http://schemas.microsoft.com/sharepoint/soap/GetAllSubWebCollection
以下是错误消息
sun.net.www.MessageHeader@16e481a15 pairs:
.{null: HTTP/1.1 401 Unauthorized}{Server: Microsoft-IIS/7.5}
{SPRequestGuid: 3584ca9e-e1e8-101f-9cff-f73da96aa0b5}{request-id: 3584ca9e-e1e8-101f-9cff-f73da96aa0b5}
{X-FRAME-OPTIONS: SAMEORIGIN}{SPRequestDuration: 6}{SPIisLatency: 0}
{WWW-Authenticate: Negotiate}{WWW-Authenticate: NTLM}
{X-Powered-By: ASP.NET}{MicrosoftSharePointTeamServices: 15.0.0.4420}
{X-Content-Type-Options: nosniff}{X-MS-InvokeApp: 1; RequireReadOnly}
{Date: Tue, 19 Mar 2019 13:14:12 GMT}{Content-Length: 0}