title: How to set existing excel file data format 'text' using java
body: <p>We have an excel file which may be <strong>large</strong>.
  We want to set cell format to 'text' to avoid issue like '=cmd', which may run 'cmd'.</p>
  
  <p>Does there have any <strong>high efficient</strong> way to keep excel data format as text but keep other format like backgroud color or font-size?</p>