register.java

又一个课程设计 简易 JSP 论坛 功能较简单的那种, 界面上模仿了 Discuz JSP 本来就学的不行, 只是尽量实现了 MVC

package cn.ialvin.bbs.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import cn.ialvin.bbs.bean.User;
import cn.ialvin.bbs.common.Tools;
import cn.ialvin.bbs.dao.DAOFactory;
import cn.ialvin.bbs.dao.IUserDAO;
import cn.ialvin.web.Servlet;

public class Register extends Servlet {
	private static final long serialVersionUID = 1L;
	public Register() { super(); }
	public void destroy() { super.destroy(); }
	public void doAction(
			HttpServletRequest request,
			HttpServletResponse response,
			PrintWriter out,
			DAOFactory factory)
			throws ServletException, IOException, SQLException {
		String vcode = this.getParameter("vcode", request);
		HttpSession session = request.getSession();
		if (!vcode.equals(session.getAttribute("VCode"))) {
			this.alert("验证码不正确！", out);
			this.back(out);
			return;
		}
		String reg = "(?i)^[\\da-z]{4,12}$";
		String usn = this.getParameter("usn", request);
		String pwd = this.getParameter("pwd", request);
		String name = this.getParameter("un", request);
		String email = this.getParameter("email", request);
		if (!usn.matches(reg) ||
				!pwd.matches(reg) ||
				"".equals(name) ||
				!email.matches("^(\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*)$")) {
			this.alert("非法进入！", out);
			this.replace("../Index", out);
			return;
		}
		pwd = Tools.encodeMD5(pwd);
		IUserDAO ud = factory.getUserDAO();
		User u = ud.getUser(usn);
		if (u != null) {
			this.alert("相同用户名的用户已存在！", out);
			this.back(out);
			return;
		}
		u = new User();
		u.setUsn(usn);
		u.setPwd(pwd);
		u.setName(name);
		u.setEmail(email);
		int i = ud.addUser(u);
		if (i == -1) {
			this.alert("添加用户出错！", out);
			this.replace("../Index", out);
			return;
		}
		session.setAttribute("isLogin", "YES");
		session.setAttribute("usr", u);
		this.alert("注册成功！", out);
		this.replace("../Index", out);
	}
}