ruby-on-rails - Encoding::UndefinedConversionError -ASCII-8BIT to UTF-8 ruby​​ on rails

Question

2.2 和 raisl 4.1。我试图从用户读取 xlsx 文件。

<%= form_for(@attachment, :html => { :multipart => true,:class => 'form-horizontal' }) do |f| %>
  <div class="form-group">
    <label for="inputEmail3" class="col-sm-2 control-label">List of Company Name</label>
    <div class="col-sm-10">
        <%= f.file_field :attachment,class: 'form-control' %>
    </div>
  </div>
  <div class="form-group">
    <div class="col-sm-offset-2 col-sm-10">
      <%= f.submit 'Import Company Name list',:class => "btn btn-primary" %>
    </div>
  </div>
<% end %>

在控制台中

 Parameters: {"utf8"=>"✓", "authenticity_token"=>"BJMhP6MnjUH17esTRxtaViIpBXL/aMzQgzuOI0a9LjI=", "attachment"=>{"attachment"=>#<ActionDispatch::Http::UploadedFile:0x00000006cd25e8 @tempfile=#<Tempfile:/tmp/RackMultipart20150701-9558-59shsp>, @original_filename="Book2.xlsx", @content_type="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", @headers="Content-Disposition: form-data; name=\"attachment[attachment]\"; filename=\"Book2.xlsx\"\r\nContent-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet\r\n">}, "commit"=>"Import Company Name list"}

即使参数以 UTF-8 标记传递，我也得到了

Encoding::UndefinedConversionError - "\xA0" from ASCII-8BIT to UTF-8:

错误.. 尝试了多种解决方案，如 .force_encoding('UTF-8') mime::type 但没有解决？

有没有人对这个问题有想法？

Answer 1

我找到了发生这种情况的原因，我有以下几点

gem 'meta_request','0.2.1'

在我的 gemfile 中并删除此 gem 使文件上传工作完美。

希望这会帮助别人......