一.Java源码

import jakarta.servlet.ServletConfig;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebInitParam;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

import java.io.IOException;
import java.util.Enumeration;

@WebServlet(urlPatterns = { "/demo0" }, initParams = { @WebInitParam(name = "ID", value = "10"),
        @WebInitParam(name = "Name", value = "zhangsan"), @WebInitParam(name = "Age", value = "18") })
public class demo0 extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        ServletConfig config = getServletConfig();
        String servletName = config.getServletName();
        Enumeration<String> initParameterNames = config.getInitParameterNames();
        while (initParameterNames.hasMoreElements()) {
            String Name = initParameterNames.nextElement();
            String Value = config.getInitParameter(Name);
            resp.getWriter().write(Name + ":" + Value+";");
        }
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req, resp);
    }
}

二.运行截图 alt