java 之servlet

Posted 2020-10-29 he-zhi

servlet基础

1. jsp的前身就是servlet

2. tomecat容器分为四个等级

1. servelt 程序

    1. 继承httpServlet 实现了http协议的servelt
    2. 重写doGet() doPost() 方法


    public class HelloServelt extends HttpServelet {
        @Override
        protected void doGet(HttpServletRquest req, HttpServletResponse res)
            throws ServletException, IOException {
            
        }

    }