问题
Look at the behavior of my table, I want that the lines of field email appear inside of the field Email and not like that show in the image...

Can anyone help me?
回答1:
use <ui:repeat>
over your email list, and print them inside e-mail column.
<ui:repeat var="email" value="#{user.emailList}">
#{email} <br/>
</ui:repeat>
来源:https://stackoverflow.com/questions/9982944/how-to-do-a-datatable-containing-a-subtable-with-primefaces-in-the-same-row-wha