从动态表中获取文本的值并传递给servelet

In a jsp file i create a dynamic table based on the users invoices or purchases. I create the table with no problems. The issues is, i href the first field(invoice number) of the row and want to display a form with detailed information on that particular invoice number. The form pops up on the same screen, with a close button to go back to the list and click another invoice number. How can i pass the invoice number, based on the invoice number the user clicks to the servelet and populate the href form?In a jsp file i create a dynamic table based on