html
## 、java web package demo; import java.io.IOException;import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebServlet;//http://127.0.0.1:8080/demo/login.do
@WebServlet("/login.do")
public class LoginServlet implements Servlet{
@Overridepublic void service(qldct, ServletResponse resp) throws ServletException, IOException {//param == parameter == 参数//从请求对象上获取指定名称的参数String username = req.getParameter("un");String password = req.getParameter("pw");System.out.println(username);System.out.println(password);resp.getWriter().println(username);}@Overridepublic void destroy() {// TODO Auto-generated method stub}@Overridepublic ServletConfig getServletConfig() {return null;}@Overridepublic String getServletInfo() {return null;}@Overridepublic void init(ServletConfig config) throws ServletException {} }
运行截图