修改zip存档中的文件

Question

我想修改XML文件的zip存档中的所有文件。当我尝试这样做时，它告诉我该文件不存在。如果我注释掉替换呼叫，虽然这有效。我做错了什么？

   Zip::ZipFile.open(temp_file.path) do |zipfile|
      for i in 0..(zipfile.entries.count - 1)
        entry = zipfile.entries[i]
        if entry.name
          if entry.name.split("/").last == "patient_manifest.txt"
            next
          end
        end
        next if entry.directory?
        data = zipfile.read(entry.name)


        doc = Nokogiri::XML(data)
        doc.root.add_namespace_definition('cda', 'urn:hl7-org:v3')
        doc.root.add_namespace_definition('sdtc', 'urn:hl7-org:sdtc')
        patient_role_element = doc.at_xpath('/cda:ClinicalDocument/cda:recordTarget/cda:patientRole')
        patient_element = patient_role_element.at_xpath('./cda:patient')
        first = patient_element.at_xpath('cda:name/cda:given').text
        last = patient_element.at_xpath('cda:name/cda:family').text

        id_node = patient_role_element.at_xpath('./cda:id')
        id_node['extension'] = id_node['extension'] + first + last
        xml_file = Tempfile.new('foo')
        begin
          xml_file.write(doc.to_xml)
          zipfile.replace(entry, xml_file.path)
        ensure
          xml_file.close
          xml_file.unlink   # deletes the temp file
        end
      end
    end