servlet示例

package cn.edu.xaut.servlet;


import cn.edu.xaut.bean.UserBean;
import cn.edu.xaut.dao.UserDao;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.sql.Date;
import java.sql.SQLException;

@WebServlet(name = "RegisterServlet", urlPatterns = {"/RegisterServlet"})
public class RegisterServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doPost(request, response);
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //处理字符编码
        response.setContentType("text/html;charset=utf-8");
        request.setCharacterEncoding("utf-8");

        //获取表单参数
        String username = request.getParameter("username");
        String email = request.getParameter("email");
        String pwd = request.getParameter("pwd");

        //创建JavaBean
        UserBean user = new UserBean();
        user.setName(username);
        user.setEmail(email);
        user.setPassword(pwd);
        user.setRegisterDate(new Date(System.currentTimeMillis()));

        //使用userDao插入数据
        UserDao userDao = new UserDao();
        try {
            userDao.insertUser(user);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }

        // 跳转到registerSuccess.jsp进行显示
        request.setAttribute("userbean", user);
        request.getRequestDispatcher("registerSuccess.jsp").forward(request,response);
    }
}