Servlet life cycle, JSP comparison

The servlet life cycle is roughly divided into three phases:

Initialization phase----calling the Init () method

The request response phase----Call the service () method, calling different Dopost ()/doget () methods depending on the request

Terminate phase----call Destroy () method

Servlets and JSPs have the same point/difference:

JSP is the extension of servlet technology , which is essentially a simple way for servlets to emphasize the appearance of application. The JSP is compiled with a "class servlet".

The application logic of the servlet is in the Java file and is completely detached from the HTML in the presentation layer.

The case for JSP is that Java and HTML can be combined into a file with a. jsp extension.

JSPs focus on Views, and Servlets are used primarily for control logic.

Both can generate dynamic Web pages. Servlet is a pure Java language, good at processing processes and business logic, the disadvantage is that the generation of Dynamic Web page is not intuitive, JSP advantage is good at web page production, generate dynamic pages more intuitive, the disadvantage is not easy to track and error.

Servlet life cycle, JSP comparison