1、登录页面
<!DOCTYPE html> <html xmlns:th="http://www.thymeleaf.org"> <head> <meta charset="UTF-8"> <title>登录</title> <script th:src="@{/js/sockjs.js}"></script> <script th:src="@{/js/stomp.js}"></script> <script th:src="@{/js/jquery.js}"></script> </head> <body> <div class="login" align="center"> <form action="/login" method="post"> <div> <span>用户名:</span><input type="text" id="userName" name="userName"> <span>密码:</span><input type="password" id="password" name="password"> <div th:if="${result} == '0'"><span th:text="${errorMsg}"></span></div> <input type="submit" value="登录"> </div> </form> </div> </body> </html>
2、写controller层
@Controller public class LoginController { @Autowired private UserInfoService userInfoService; @RequestMapping(value = "login", method = RequestMethod.POST) @ResponseBody public String login(@RequestParam(name = "userName", required = false) String userName, @RequestParam(name = "password", required = false) String password, Model model, HttpSession session) { // @RequestParam(name = "userName", required = false）是name 而不是value // 是false 而不是true if (userName == null) { model.addAttribute("result", 0); model.addAttribute("errorMsg", "用户名不能为空"); return "index"; } if (password == null) { model.addAttribute("result", 0); model.addAttribute("errorMsg", "密码不能为空"); return "index"; } // 和数据库中的进行比对 UserInfo userInfo = userInfoService.getUserByName(userName); if (userInfo != null) { if (password.equals(userInfo.getPassword())) { // 用户名和密码都正确 model.addAttribute("result", 1); // 根据用户的类别跳转到相应的页面，管理员和客户 if (userInfo.getUserState() == 1) return "server/main"; return "client/main"; } else { // 用户存在但是输入的密码不正确 model.addAttribute("result", 0); model.addAttribute("errorMsg", "密码不正确，请重新输入"); // 返回到登录页面 return "index"; } } // 如果没有获取到相应的用户对象 model.addAttribute("result", 0); model.addAttribute("errorMsg", "这个用户名不存在"); return "index"; } }
3、service层
@Service public class UserInfoServiceImpl implements UserInfoService{ @Autowired private UserInfoDao userInfoDao; /** * @description 根据用户名获取用户信息 */ @Override public UserInfo getUserByName(String userName) { return userInfoDao.getUserByName(userName); } }
4、dao层
@Repository(value="UserInfoDao") public class UserInfoDaoImpl implements UserInfoDao{ @Autowired private JdbcTemplate jdbcTemplate; String sql; /** * @description 根据用户名获取用户信息 */ @Override public UserInfo getUserByName(String userName) { sql = "select * from userInfo where userName = '" + userName + "'"; List<UserInfo> userList = jdbcTemplate.query(sql, new Object[]{}, new BeanPropertyRowMapper<UserInfo>(UserInfo.class)); if(userList !=null && userList.size() > 0) { return userList.get(0); } return null; } }