The essence of Java Enterprise Development is how the foreground background interacts-how each object interacts and communicates-how the program executes

1. Pedigree-servlet

How to associate a URL with a strvlet (. java file)

Shunping said: In XML, the URL first found XML, by the corresponding URL to get the servlet class, and then you can enter a URL to access the URL. or with annotations

Interaction in 2.JSP

Submits data from the form JSP to the servlet, and then the servlet processes it.

Shunping The first example of a contact frame is the URL---the servlet.

3. How to interact with the first struts framework

First step: Create a foreground page

Step Two: Pass the input data to the background

Struts2 action How do I get the form value of a JSP page?

So the name above = "Password" is the key

action= "Login.action" to find the action class by using the following configuration file

Web. Xml to configure and transfer the process to struts

Step three: Processing classes

Fourth step: In Struts.xml, configure what to do after the action class is completed

Fifth Step: Login to the successful page

The essence of Java Enterprise Development is how the foreground background interacts-how each object interacts and communicates-how the program executes