《Java Web程序设计任务教程》-教材源码 第11章.rar

package cn.itcast.chapter11.model2.web; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import cn.itcast.chapter11.model2.domain.RegisterFormBean; import cn.itcast.chapter11.model2.domain.UserBean; import cn.itcast.chapter11.model2.util.DBUtil; public class ControllerServlet extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doPost(request, response); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setHeader("Content-type", "text/html;charset=GBK"); response.setCharacterEncoding("GBK"); // 获取用户注册时表单提交的参数信息 String name = request.getParameter("name"); String password=request.getParameter("password"); String password2=request.getParameter("password2"); String email=request.getParameter("email"); // 将获取的参数封装到注册表单相关的RegisterFormBean类中 RegisterFormBean formBean = new RegisterFormBean(); formBean.setName(name); formBean.setPassword(password); formBean.setPassword2(password2); formBean.setEmail(email); // 验证参数填写是否符合要求，如果不符合，转发到register.jsp重新填写 if(!formBean.validate()){ request.setAttribute("formBean", formBean); request.getRequestDispatcher("/register.jsp").forward(request, response); return; } // 参数填写符合要求，则将数据封装到UserBean类中 UserBean userBean = new UserBean(); userBean.setName(name); userBean.setPassword(password); userBean.setEmail(email); // 调用DBUtil类中的insertUser()方法执行添加操作，并返回一个boolean类型的标志 boolean b = DBUtil.getInstance().insertUser(userBean); // 如果返回为false，表示注册的用户已存在，则重定向到register.jsp重新填写 if(!b){ request.setAttribute("DBMes", "你注册的用户已存在"); request.setAttribute("formBean", formBean); request.getRequestDispatcher("/register.jsp").forward(request, response); return; } response.getWriter().print("恭喜你注册成功，3秒钟自动跳转"); // 将成功注册的用户信息添加到Session中 request.getSession().setAttribute("userBean", userBean); // 注册成功后，3秒跳转到登录成功页面loginSuccess.jsp response.setHeader("refresh", "3;url=loginSuccess.jsp"); } }