1 官网
http://developers.itextpdf.com/itext-java
2 form中加入表格
http://developers.itextpdf.com/content/best-itext-questions-stackoverview/interactive-forms/itext7-how-add-table-form-and-maybe-insert-new-page
http://stackoverflow.com/questions/28590487/adding-table-to-existing-pdf-on-the-same-page-itext?rq=1
3 表格中中文不显示的问题
http://bbs.csdn.net/topics/10122567
http://blog.csdn.net/awodiuleilaomu999/article/details/70199768