class MyScheduledServuce extends ScheduledService<Number>{
@Override
protected Task<Number> createTask() {
int flag=0;
Task<Number> task = new Task<Number>() {
@Override
protected Number call() throws Exception {
//时间格式转换
DateFormat sdf = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
if(textMessageList.size()>1){
for(int i =1; i<textMessageList.size();i++){
String userName = textMessageList.get(i).getSender();
if (ChatStage.getChatViewMap().containsKey(userName)) {
GridPane messageBox = new GridPane();
Label userLabel = new Label(textMessageList.get(i).getSender()+"：");
Label timeLabel = new Label(sdf.format(textMessageList.get(i).getTime()));
Text messageText = new Text(textMessageList.get(i).getText());
messageBox.setHgap(20);
messageBox.setVgap(5);
messageBox.add(userLabel, 0, 1);
messageBox.add(timeLabel, 1, 0);
messageBox.add(messageText, 1, 1);
ChatStage.getChatViewMap().get(userName).getChildren().add(messageBox);
}else{
VBox vBox2 = new VBox();
GridPane messageBox = new GridPane();
Label userLabel = new Label(textMessageList.get(i).getSender()+"：");
Label timeLabel = new Label(sdf.format(textMessageList.get(i).getTime()));
Text messageText = new Text(textMessageList.get(i).getText());
messageBox.setHgap(20);
messageBox.setVgap(5);
messageBox.add(userLabel, 0, 1);
messageBox.add(timeLabel, 1, 0);
messageBox.add(messageText, 1, 1);
vBox2.getChildren().add(messageBox);
ChatStage.getChatViewMap().put(userName,vBox2);
}
}
}
textMessageList = new ArrayList<>();
return flag;
}
};
return task;
}
}
MyScheduledServuce myScheduledServuce = new MyScheduledServuce();
myScheduledServuce.setPeriod(Duration.seconds(0.5));
myScheduledServuce.start();
userButton.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
currentUser = user.getUserName();
if(chatViewMap.containsKey(user.getUserName())){
chatNode[0] = chatViewMap.get(user.getUserName());
}else{
chatNode[0] = new VBox();
chatNode[0].setSpacing(20);
ChatStage.getChatViewMap().put(currentUser,chatNode[0]);
}
if(chatNode[0] !=null){
stackPane1.getChildren().clear();
stackPane1.getChildren().add(chatNode[0]);
}
}
});
package client.gui;
import client.model.ClientController;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Rectangle2D;
import javafx.scene.ImageCursor;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.image.Image;
import javafx.scene.layout.AnchorPane;
import javafx.stage.Screen;
import javafx.stage.Stage;
import javafx.stage.WindowEvent;
import model.user.User;
/**
* @author cjt
*/
public class LoginStage extends Application {
public static void main(String[] args) {
launch(args);
}
@Override
public void start(Stage loginStage) {
//关闭窗口同时关闭后台
loginStage.setOnCloseRequest(new EventHandler<WindowEvent>() {
@Override
public void handle(WindowEvent event) {
ClientController.logout();
}
});
//设置窗口的标题和图标，并将窗口设置为不可拉伸
loginStage.setTitle("JMU Chat Room");
loginStage.getIcons().add(new Image("/client/gui/resource/stage-icon2.png"));
loginStage.setResizable(false);
//把窗口设置为屏幕居中
Rectangle2D screenBounds = Screen.getPrimary().getVisualBounds();
loginStage.setWidth(556);
loginStage.setHeight(458);
loginStage.setX((screenBounds.getWidth()-loginStage.getWidth())/2);
loginStage.setY((screenBounds.getHeight()-loginStage.getHeight())/2);
//创建两个AnchorPane布局面板，并把achorPane2添加到anchorPane1里
AnchorPane anchorPane1 = new AnchorPane();
AnchorPane anchorPane2 = new AnchorPane();
AnchorPane backgroundPane = new AnchorPane();
anchorPane1.getChildren().add(anchorPane2);
anchorPane1.getChildren().add(backgroundPane);
//管理anchorPane2在anchorPane1中的位置
AnchorPane.setTopAnchor(anchorPane2,158.0);
AnchorPane.setBottomAnchor(anchorPane2,0.0);
AnchorPane.setLeftAnchor(anchorPane2,0.0);
AnchorPane.setRightAnchor(anchorPane2,0.0);
//管理backgroundPane在anchorPane1中的位置
AnchorPane.setTopAnchor(backgroundPane,0.0);
AnchorPane.setBottomAnchor(backgroundPane,254.0);
AnchorPane.setLeftAnchor(backgroundPane,0.0);
AnchorPane.setRightAnchor(backgroundPane,0.0);
//将anchorPane1作为scene的根节点，并设置scene的宽高
Scene scene = new Scene(anchorPane1,538,412);
loginStage.setScene(scene);
//设置光标的图标
scene.setCursor(new ImageCursor(new Image("/client/gui/resource/cursor-icon3.png")));
//创建账号标签
Label userNameLabel = new Label("User Name:");
anchorPane2.getChildren().add(userNameLabel);
AnchorPane.setTopAnchor(userNameLabel,60.0);
AnchorPane.setLeftAnchor(userNameLabel,110.0);
/* 创建账号文本输入框 */
TextField userTextField = new TextField();
userTextField.setTooltip(new Tooltip("请输入用户名"));
userTextField.setPromptText("账号");
anchorPane2.getChildren().add(userTextField);
AnchorPane.setTopAnchor(userTextField,60.0);
AnchorPane.setLeftAnchor(userTextField,240.0);
/* 创建密码标签 */
Label pwLabel = new Label("Password:");
anchorPane2.getChildren().add(pwLabel);
AnchorPane.setTopAnchor(pwLabel,102.0);
AnchorPane.setLeftAnchor(pwLabel,110.0);
/* 创建密码输入框 */
PasswordField pwField = new PasswordField();
pwField.setTooltip(new Tooltip("请输入密码"));
pwField.setPromptText("密码");
anchorPane2.getChildren().add(pwField);
AnchorPane.setTopAnchor(pwField,102.0);
AnchorPane.setLeftAnchor(pwField,240.0);
/* 创建登录按钮 */
Button loginButton = new Button("登录");
loginButton.setCursor(new ImageCursor(new Image("/client/gui/resource/cursor-icon1.png")));
anchorPane2.getChildren().add(loginButton);
AnchorPane.setTopAnchor(loginButton,185.0);
AnchorPane.setBottomAnchor(loginButton,24.0);
AnchorPane.setLeftAnchor(loginButton,119.0);
AnchorPane.setRightAnchor(loginButton,119.0);
//创建注册按钮
Button registerButton = new Button("注册账号");
registerButton.setCursor(new ImageCursor(new Image("/client/gui/resource/cursor-icon1.png")));
anchorPane2.getChildren().add(registerButton);
AnchorPane.setTopAnchor(registerButton,140.0);
AnchorPane.setBottomAnchor(registerButton,80.0);
AnchorPane.setLeftAnchor(registerButton,349.0);
AnchorPane.setRightAnchor(registerButton,103.0);
/* 登录按钮点击事件 */
loginButton.setOnAction(event -> {
String userName = userTextField.getText();
String password = pwField.getText();
User user = new User(userName,password);
if(ClientController.clientLogin(user)){
loginStage.close();
ChatStage chatStage = new ChatStage();
chatStage.start(new Stage());
}else{
AlertDialog alertDialog = new AlertDialog("账号或密码错误");
alertDialog.start(new Stage());
}
});
//注册按钮点击事件
registerButton.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
RegisterStage registerStage = new RegisterStage();
registerStage.start(new Stage());
}
});
//添加CSS样式表
scene.getStylesheets().add(LoginStage.class.getResource("LoginCss.css").toExternalForm());
anchorPane1.setId("anchor-Pane1");
anchorPane2.setId("anchor-Pane2");
backgroundPane.setId("background-Pane");
loginButton.setId("login-Button");
registerButton.setId("register-Button");
loginStage.show();
}
}
该聊天系统仅完成了最基础的聊天功能，还有很多功能和细节尚未实现，比如标签设置图标、按钮设置图标、进度条等等因为实在没时间没能实现，最后只能草草收尾，在截止前的最后一天才勉强完成。
因为从零开始学习JAVA FX，并且没有使用scene builder，纯手打实现图形界面，导致花费了前期大部分时间，赶不上进度。
在课程设计结束后，我想进一步学习JAVA Fx技术以及前端技术，来更加完善聊天系统，同时实现多人聊天和文件传输。
原文：https://www.cnblogs.com/cjt0722/p/14342694.html