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下面是一個從本地文件系統上傳文件到遠程Apache服務器的程序。使用ruby上傳文件net：HTTP API到遠程apache服務器失敗409 Conflict
程序以409衝突錯誤結束。有什麼建議我做錯了什麼？我在httpd.conf中打開了DAV並給了所有必要的權限，但我仍然沒有運氣。如果需要，我可以發佈httpd.conf。
這是代碼：
BOUNDARY = "AaB03xZZZZZZ11322321111XSDW"
uri = URI.parse("http://localhost/dropbox/")
file = "/tmp/KEYS.txt"
http = Net::HTTP.new(uri.host, uri.port)
request = Net::HTTP::Put.new(uri.request_uri)
request.body_stream=File.open(file)
request["Content-Type"] = "multipart/form-data"
request.add_field('Content-Length', File.size(file))
request.add_field('session', BOUNDARY)
response=http.request(request)
puts "Request Headers: #{request.to_hash.inspect}"
puts "Sending PUT #{uri.request_uri} to #{uri.host}:#{uri.port}"
puts "Response #{response.code} #{response.message}"
puts "#{response.body}"
puts "Headers: #{response.to_hash.inspect}"
，其輸出：
request = Net::HTTP::Put.new("#{uri.request_uri}/test.file")
錯誤「不能：
Request Headers: {"accept"=>["*/*"], "host"=>["localhost"], "content-length"=>[88873], "content-type"=>["multipart/form-data"], "session"=>["AaB03xZZZZZZ11322321111XSDW"], "connection"=>["close"]}
Sending PUT /dropbox/ to localhost:80
Response 409 Conflict
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>409 Conflict</title>
</head><body>
<h1>Conflict</h1>
<p>Cannot PUT to a collection.</p>
<hr />
<address>Apache/2.2.21 (Unix) mod_ssl/2.2.21 OpenSSL/0.9.8r DAV/2 PHP/5.3.10 with Suhosin-Patch Server at localhost Port 80</address>
</body></html>
Headers: {"server"=>["Apache/2.2.21 (Unix) mod_ssl/2.2.21 OpenSSL/0.9.8r DAV/2 PHP/5.3.10 with Suhosin-Patch"], "content-length"=>["315"], "content-type"=>["text/html; charset=ISO-8859-1"], "date"=>["Thu, 23 Aug 2012 17:36:40 GMT"], "connection"=>["close"]}