Java FX MVVM架构 构建 登录界面

package com.example.mvvm; import com.example.mvvm.model.LoginManager; import com.example.mvvm.model.LoginResult; import com.example.mvvm.model.UserView; import javafx.event.ActionEvent; import javafx.fxml.FXML; import javafx.fxml.Initializable; import javafx.scene.control.Alert; import javafx.scene.control.ButtonType; import javafx.scene.control.TextField; import java.net.URL; import java.util.ResourceBundle; import static javafx.scene.control.Alert.AlertType.*; public class LoginController implements Initializable { @FXML private TextField nameTxt; @FXML private TextField pwdTxt; private final UserView userView = new UserView(); private final LoginManager loginManager = new LoginManager(); @FXML public void cancel(ActionEvent actionEvent) { if (userView.getName() != null || userView.getPassword() != null) { userView.setName(""); userView.setPassword(""); nameTxt.requestFocus(); } } @FXML public void login(ActionEvent actionEvent) { if (userView.getName().trim().length()>0 && userView.getPassword().trim().length()>0) { LoginResult result = loginManager.login(userView.getName(), userView.getPassword()); if(result == LoginResult.SUCCESS){ new Alert(INFORMATION,result.toString()).show(); } else { new Alert(WARNING,result.toString()).show(); } }else { new Alert(ERROR,"用户名或密码不能为空", ButtonType.OK).show(); } } @Override public void initialize(URL url, ResourceBundle resourceBundle) { //将userView中的属性绑定到对应的文本框 nameTxt.textProperty().bindBidirectional(userView.nameProperty()); pwdTxt.textProperty().bindBidirectional(userView.passwordProperty()); } }