What are the main differences between jsp and servlet?

1. The out in jsp is used directly, and the servlet must declare it by itself (for example, PrintWriter out = response. getWriter ();)
The value of name in 2.html is passed to getParameter ("name") in. java or. jsp ")
3. servlet is essentially a java class, and the intermediate product of jsp compilation is servlet
4. There are doGet and doPost methods in the servlet, but these methods are not available in jsp.


JSP = HTML + Java + Jsp tag (HTML refers to FORM as interface design)
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Servlet = Java + HTML (mainly for java processing)
The two are essentially the same
Web refers to jsp and servlet. We need to deploy the web on the app, and use dbms as the background.