模拟登录

public class LoginServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.setCharacterEncoding("utf-8");
        resp.setCharacterEncoding("utf-8");
        String username = req.getParameter("username");
        String pwd = req.getParameter("pwd");
        //getParameterValues可以接受一个数组可以遍历取出也可增强for（前端复选项）
        String[] hobbies = req.getParameterValues("hobbies");

        System.out.println("======================");
        System.out.println(username);
        System.out.println(pwd);
        //后台接收中文乱码问题
        System.out.println(Arrays.toString(hobbies));
        System.out.println("======================");
        //通过请求转发
        // 这里的/代表当天的web应用
        req.getRequestDispatcher("/success.jsp").forward(req, resp);

    }

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

jsp代码
<%@ page contentType="text/html;charset=UTF-8" language="java" %>


    


登录

    

        用户名：

        密码：

        爱好：
        看电影
        阅读
        爬山
        摄影