Question

我正在尝试从远程sftp站点下载xmls，将文件内容读入REXML并将数据保存到DB。到目前为止，代码是读取文件而f.gets行失败并显示错误：

/usr/local/lib/ruby/gems/1.9.1/gems/net-sftp-2.0.5/lib/net/sftp/session.rb:846:in `wait_for': Net::SFTP::StatusException (4, "failure") (Net::SFTP::StatusException)
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-sftp-2.0.5/lib/net/sftp/session.rb:257:in `read!'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-sftp-2.0.5/lib/net/sftp/operations/file.rb:162:in `fill'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-sftp-2.0.5/lib/net/sftp/operations/file.rb:100:in `block in gets'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-sftp-2.0.5/lib/net/sftp/operations/file.rb:93:in `loop'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-sftp-2.0.5/lib/net/sftp/operations/file.rb:93:in `gets'
        from ./test.rb:10:in `block (3 levels) in <main>'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-sftp-2.0.5/lib/net/sftp/operations/file_factory.rb:45:in `open'
        from ./test.rb:9:in `block (2 levels) in <main>'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-sftp-2.0.5/lib/net/sftp/operations/dir.rb:33:in `block in foreach'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-sftp-2.0.5/lib/net/sftp/operations/dir.rb:33:in `each'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-sftp-2.0.5/lib/net/sftp/operations/dir.rb:33:in `foreach'
        from ./test.rb:8:in `block in <main>'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-sftp-2.0.5/lib/net/sftp/session.rb:939:in `call'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-sftp-2.0.5/lib/net/sftp/session.rb:939:in `block in do_version'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-sftp-2.0.5/lib/net/sftp/session.rb:939:in `each'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-sftp-2.0.5/lib/net/sftp/session.rb:939:in `do_version'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-sftp-2.0.5/lib/net/sftp/session.rb:909:in `when_channel_polled'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-ssh-2.5.2/lib/net/ssh/connection/channel.rb:311:in `call'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-ssh-2.5.2/lib/net/ssh/connection/channel.rb:311:in `process'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-ssh-2.5.2/lib/net/ssh/connection/session.rb:214:in `block in preprocess'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-ssh-2.5.2/lib/net/ssh/connection/session.rb:214:in `each'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-ssh-2.5.2/lib/net/ssh/connection/session.rb:214:in `preprocess'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-ssh-2.5.2/lib/net/ssh/connection/session.rb:197:in `process'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-ssh-2.5.2/lib/net/ssh/connection/session.rb:161:in `block in loop'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-ssh-2.5.2/lib/net/ssh/connection/session.rb:161:in `loop'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-ssh-2.5.2/lib/net/ssh/connection/session.rb:161:in `loop'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-sftp-2.0.5/lib/net/sftp/session.rb:802:in `loop'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-sftp-2.0.5/lib/net/sftp/session.rb:787:in `connect!'
        from /usr/local/lib/ruby/gems/1.9.1/gems/net-sftp-2.0.5/lib/net/sftp.rb:32:in `start'
        from ./test.rb:7:in `<main>'

这是我的代码：

#!/usr/bin/ruby

require 'rubygems'
require 'net/sftp'
require 'rexml/document'

Net::SFTP.start('some.example.host','myuser',:password => 'fake') do |sftp|
    sftp.dir.foreach("/path/to/mydir/") do |xml|
        sftp.file.open("/path/to/mydir/"+xml.name) do |f|
            puts f.gets # < THIS BREAKS IT
        end
    end  
end

代码很脏，现在是测试。我希望读取远程目录中的所有文件并打印每个文件的第一行。

感谢您的帮助。

Answer 1

我认为你要找的是：

sftp.download!("/path/to/remote", "/path/to/local")

或者

 data = sftp.download!("/path/to/remote")

从文档中得到了这个：http://net-ssh.rubyforge.org/sftp/v2/api/

Answer 2

当我尝试访问SFTP用户无权访问的文件时，我收到了类似的错误。

Net::SFTP::StatusException: Net::SFTP::StatusException
    from /usr/local/rbenv/versions/1.9.3-p374/lib/ruby/gems/1.9.1/gems/net-sftp-2.0.5/lib/net/sftp/session.rb:846:in `wait_for'
    from /usr/local/rbenv/versions/1.9.3-p374/lib/ruby/gems/1.9.1/gems/net-sftp-2.0.5/lib/net/sftp/session.rb:561:in `stat!'
    from (irb):80
    from /usr/local/rbenv/versions/1.9.3-p374/lib/ruby/gems/1.9.1/gems/railties-3.2.13/lib/rails/commands/console.rb:47:in `start'
    from /usr/local/rbenv/versions/1.9.3-p374/lib/ruby/gems/1.9.1/gems/railties-3.2.13/lib/rails/commands/console.rb:8:in `start'
    from /usr/local/rbenv/versions/1.9.3-p374/lib/ruby/gems/1.9.1/gems/railties-3.2.13/lib/rails/commands.rb:41:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

Ruby net / sftp远程读取文件并保存到数据库，得到错误StatusException（4，“failure”）

2 个答案: