useraction.java

利用servlet写的用户注册登陆

package com.tarena.action;

import java.io.IOException;
import java.util.List;

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

import com.tarena.persitence.User;
import com.tarena.persitence.UserService;
import com.tarena.util.StringUtil;

public class UserAction {
	private UserService userService = new UserService();

	public User createUser(HttpServletRequest request) {
		User user = new User();
		user.setUserName(request.getParameter("userName"));
		user.setPassword(request.getParameter("password"));
		user.setGender(request.getParameter("gender"));
		user.setDegree(request.getParameter("degree"));
		user.setIntroduction(request.getParameter("introduction"));
		String birthday = request.getParameter("birthday");
		if (birthday.trim().length() != 0) {
			user.setBirthday(java.sql.Date.valueOf(birthday));
		}
		String[] hobbiesAry = request.getParameterValues("hobbies");
		user.setHobbies(StringUtil.join(hobbiesAry, ","));
		return user;
	}

	public String register(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		User user = createUser(request);
		try {
			userService.add(user);
			return "/html/success.html";
		} catch (Exception e) {
			e.printStackTrace();
			throw new ServletException(e);
		}
	}

	public String find(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		try {
			List<User> users = userService.findAll();
			request.setAttribute("users", users);
			return "/user/list";
		} catch (Exception e) {
			e.printStackTrace();
			throw new ServletException(e);
		}
	}

	public String modify(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		try {
			return "/user/message";
		} catch (Exception e) {
			e.printStackTrace();
			throw new ServletException(e);
		}
	}

	public String login(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		try {
			String userName = request.getParameter("userName");
			String password = request.getParameter("password");
			User userInfo = userService.find(userName, password);
			if (userInfo != null) {
				HttpSession session = request.getSession();
				session.setAttribute("userInfo", userInfo);
				return "/find.do";
			} else {
				return "/login.html";
			}
		} catch (Exception e) {
			e.printStackTrace();
			throw new ServletException(e);
		}
	}
}