How to make Web Text Editor with Spring MVC

guys

I was looking for how to make a text editor in a Web Application with Spring MVC, I didn't find anything through my search.

I'd like to know how I can create a text editor such as Blogger entries editor but in a own Web Application.

I want to create a Text Editor that can contain a Script Text such as letter but with some static parameters.

For example:

Hi, Mr. David: (name will come from a database and can not be modified)

We are pleased to welcome you to our company. Your employee number is: 33057. (Employee number will come from a database and can not be modified).

Regards,

Something like that, a user would open the text editor and it'll contains a Script Text where user can make modifications to certain text. For example: "We are pleased to welcome you to our company" but will not be able to change the text that will come from database.

I was looking for a long time and I didn't find a thing. I hope you guys can help me, please!

I'm using Java 8, Spring MVC Framework and Thymeleaf Template.

Thanks in advance.