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HTTP 409 Conflict响应状态码指示与服务器当前状态的请求冲突。

冲突最有可能发生以回应PUT请求。例如，在上传比服务器上已存在的文件更早的文件时，您可能会收到409响应，从而导致版本控制冲突。

状态

409 Conflict

规范

规范	标题
RFC 7231，第6.5.8节：409冲突	超文本传输协议（HTTP / 1.1）：语义和内容

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PUT

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