【Java】用JavaFx实现记事万年历（实验课题目）

要求：

设计一个记事万年历（如图3所示），可显示当前月份的日历、当前时间和记事本窗口。

（1）日历可以根据窗口提供的文本框中输入的年份和月份显示不同年月的日历信息；

（做完才发现没有实现第一个功能！(◎_◎;)，算了就这样吧，感觉windows自带的日历就不能指定日期，只能一点点的翻。）

 （ 向完美主义屈服。。我还是添加了个触发器(ﾟoﾟ;;）

（2）时钟是动态的，即根据系统时间实时跟新显示信息。

效果图：

在日志区域输入内容并点击保存日志：

 可以在workspace中当前文件夹Practice下看到保存的这个日志文件：因为使用相对路径保存的日志文件的

删除该txt

读取6月15日的日志，因为日志已经被删除了，所以读取的话会报错： 

直接上代码吧，代码中有注释（代码稍稍有点长，请耐心看完(｡ì _ í｡)）

package Shiyan6;
import java.io.File;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.Scanner;
import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.Alert.AlertType;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.ScrollPane;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Pane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Line;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.text.Text;
import javafx.stage.Stage;
import javafx.util.Duration;

public class Shiyan6_2 extends Application
{
	public BorderPane wholePane=new BorderPane();
	Calendar currentDate=new GregorianCalendar();
	//以此刻的年月日初始化右侧文本标题
	RightOftheWholePane log=new RightOftheWholePane(currentDate.get(Calendar.YEAR),currentDate.get(Calendar.MONTH)+1,currentDate.get(Calendar.DAY_OF_MONTH));
	//以当前的年月设置左侧的部分
	BorderPane left=setLeftOftheWholePane(currentDate.get(Calendar.YEAR),currentDate.get(Calendar.MONTH)+1);	
	public void start(Stage primaryStage)
	{
		BottomOftheWholePane bottom=new BottomOftheWholePane();
		TopOftheWholePane top=new TopOftheWholePane(currentDate.get(Calendar.YEAR),currentDate.get(Calendar.MONTH)+1);
		//调整块于块之间的间距
		top.setPadding(new Insets(5,5,5,5));
		left.setPadding(new Insets(5,5,5,5));
		bottom.setPadding(new Insets(5,5,5,5));
		log.setPadding(new Insets(5,5,5,5));
		wholePane.setTop(top);wholePane.setLeft(left);
		wholePane.setBottom(bottom);wholePane.setRight(log);
		Scene scene = new Scene(wholePane);
		primaryStage.setScene(scene);
		primaryStage.show();
	}
	//下部组件
	class BottomOftheWholePane extends HBox
	{
		  public Button save;
		  public Button delete;
		  public BottomOftheWholePane()
		  {
				Button btLogSave=new Button("保存日志");
				Button btLogDelete=new Button("删除日志");
				Button btLogRead=new Button("读取日志");
				
				 btLogSave.setOnAction(e -> {
						try {
							File file=new File(log.getURL());
							FileWriter fileWriter = new FileWriter(file);
				            fileWriter.write(log.getTextArea());
							 fileWriter.close();
							 Alert alert = new Alert(AlertType.INFORMATION);
							 alert.setTitle("保存日志");
							 alert.setContentText("成功保存日志");			  
							 alert.showAndWait();
						}
						catch(Exception ex) {
							Alert alert = new Alert(AlertType.INFORMATION);
							 alert.setTitle("保存日志");
							 alert.setContentText("保存日志失败");			  
							 alert.showAndWait();
						}
					});
					btLogDelete.setOnAction(e -> {
						log.setTextArea("");
						try {
							String s = log.getURL();
							File f = new File(s);
							f.delete();
							Alert alert = new Alert(AlertType.INFORMATION);
							 alert.setTitle("删除日志");
							 alert.setContentText("成功删除日志");			  
							 alert.showAndWait();
						}
						catch(Exception ex) {
							Alert alert = new Alert(AlertType.INFORMATION);
							 alert.setTitle("删除日志");
							 alert.setContentText("删除日志失败˙");			  
							 alert.showAndWait();
						}
					}); 
					btLogRead.setOnAction(e -> {
						try {
							Scanner input = new Scanner(new File(log.getURL()));
							String s = "";
							while(input.hasNext())
								s += input.nextLine();
							log.setTextArea(s);
							Alert alert = new Alert(AlertType.INFORMATION);
							 alert.setTitle("读取日志");
							 alert.setContentText("成功读取日志");			  
							 alert.showAndWait();
							input.close();
						}
						catch(Exception ex) {
							Alert alert = new Alert(AlertType.INFORMATION);
							 alert.setTitle("读取日志");
							 alert.setContentText("日志不存在，读取日志失败！");			  
							 alert.showAndWait();
						}
					});
				setAlignment(Pos.CENTER);
				setSpacing(10);
				getChildren().addAll(btLogSave,btLogDelete,btLogRead);
		  }
		 
		  
	}
	//右部组件
	class RightOftheWholePane extends VBox
	{
		public Label title;
		public TextArea logArea;
		public String url;
		//构造方法，以给定年月日设置右边的文本区域
		public RightOftheWholePane(int year,int month,int day)
		{
			title=new Label();
			logArea=new TextArea();
			logArea.setWrapText(true);
			title.setAlignment(Pos.CENTER);
			logArea.setPrefColumnCount(25);
			logArea.setPrefRowCount(21);
			String s=String.format("%04d%02d%02d",year,month,day);
			this.url=s+".txt";
			setTitle(year+"年"+month+"月"+"日"+day);
			title.setStyle("-fx-pref-width: 350px;-fx-pref-height: 20px;-fx-background-color:pink");
			title.setFont(Font.font("Times New Roman",FontWeight.BOLD,15));
			title.setTextFill(Color.BLUE);
			setAlignment(Pos.CENTER);
			ScrollPane scrollPane=new ScrollPane(logArea);//支持滚动
			getChildren().addAll(title,logArea);
		}
		//set
		public void setTitle(String s) {title.setText(s);}
		public void setTextArea(String s) {logArea.setText(s);}
		public void setURL(String s) {this.url=s;}
		//get
		public String getTitle() {return title.getText();}
		public String getTextArea() {return logArea.getText();}
		public String getURL() {return this.url;}
	}
    //上部组件	
	class TopOftheWholePane extends HBox
	{
		public int year,month;
		public TextField yearText = new TextField();
	    public TextField monthText = new TextField();
	    public Button btLastYear = new Button("上年");
	    public Button btNextYear = new Button("下年");
	    public Button btLastMonth = new Button("上月");
	    public Button btNextMonth = new Button("下月");
	    
	    public TopOftheWholePane(int year,int month)
	    {
	    	//设置年月并初始化
	    	this.year=year;this.month=month;
	    	this.yearText.setText(Integer.toString(year));
	    	this.monthText.setText(Integer.toString(month));
	    	yearText.setAlignment(Pos.CENTER);//年份的文本域设置为居中
	    	monthText.setAlignment(Pos.CENTER);//月份的文本域设置为居中
	     	yearText.setEditable(true);
	    	monthText.setEditable(true);
	    	
	    	this.setAlignment(Pos.CENTER);//HBox对齐方式为居中
	    	this.setSpacing(5);//两个节点之间的间距
	    	yearText.setOnAction(e->{
	    		int newYear=Integer.parseInt(yearText.getText()),newMonth=Integer.parseInt(monthText.getText());
	    		setCalendarBaseOnGivenDate(newYear,newMonth);
	    	}); 
	    	monthText.setOnAction(e->{
	    		int newYear=Integer.parseInt(yearText.getText()),newMonth=Integer.parseInt(monthText.getText());
	    		setCalendarBaseOnGivenDate(newYear,newMonth);
	    	});
	    	btLastYear.setOnAction(e->{
	    		this.year--;
	    		yearText.setText(String.valueOf(this.year));
	    		log.setTextArea("");
	    		wholePane.setLeft(setLeftOftheWholePane(this.year,this.month));
	    	});
	    	btNextYear.setOnAction(e->{
	    		this.year++;
	    		yearText.setText(String.valueOf(this.year));
	    		log.setTextArea("");
	    		wholePane.setLeft(setLeftOftheWholePane(this.year,this.month));
	    	});
	    	btLastMonth.setOnAction(e->{
	    		if(this.month==1)
	    		{
	    			this.month=12;this.year--;
	    		}
	    		else
	    			this.month--;
	    		yearText.setText(String.valueOf(this.year));
	    		monthText.setText(String.valueOf(this.month));
	    		log.setTextArea("");
	    		wholePane.setLeft(setLeftOftheWholePane(this.year,this.month));
	    	});
	    	btNextMonth.setOnAction(e->{
	    		if(this.month==12)
	    		{
	    			this.month=1;this.year++;
	    		}
	    		else
	    			this.month++;
	    		yearText.setText(String.valueOf(this.year));
	    		monthText.setText(String.valueOf(this.month));
	    		log.setTextArea("");
	    		wholePane.setLeft(setLeftOftheWholePane(this.year,this.month));
	    	});
	    	yearText.setPrefColumnCount(6);
	    	yearText.setPrefHeight(5);
	    	monthText.setPrefColumnCount(6);
	    	monthText.setPrefHeight(5);
	    	this.getChildren().addAll(btLastYear,yearText,btNextYear,btLastMonth,monthText,btNextMonth);
	    }
	    public void setCalendarBaseOnGivenDate(int year,int month)
	    {
    		if(year>0 && month>0 && month<=12)
    		{
    			this.year=year;this.month=month;
    			wholePane.setLeft(setLeftOftheWholePane(this.year,this.month));
    		}
    		else
    		{
    			Alert alert = new Alert(AlertType.WARNING);
				 alert.setTitle("设置日期");
				 alert.setContentText("设置日期失败，请输入合法的日期");			  
				 alert.showAndWait();
    		}
	    }
	   
	}
	//以指定日期设置左侧,方法返回组件
	public BorderPane setLeftOftheWholePane(int year,int month)
	{
		BorderPane leftOftheWholePane=new BorderPane();
		ClockPane clock=new ClockPane();//以当前时间建立一个时钟
		EventHandler  eventHandler = e -> {
			clock.setCurrentTime();
		};
		Timeline animation = new Timeline(
				new KeyFrame(Duration.millis(1000),eventHandler));
		animation.setCycleCount(Timeline.INDEFINITE);
		animation.play(); 
		CalendarPane calender=new CalendarPane(year,month);//以给定的年月建立日历
		leftOftheWholePane.setCenter(calender);
		leftOftheWholePane.setBottom(clock);
		return leftOftheWholePane;
	}
	//日历类
	class CalendarPane extends  GridPane
	{
		public CalendarPane(int year,int month)
		{
			Label sun=new Label("SUN日");sun.setFont(Font.font("Times New Roman",FontWeight.BOLD,12));sun.setTextFill(Color.RED);
			Label mon=new Label("MON一");mon.setFont(Font.font("Times New Roman",FontWeight.BOLD,12));
			Label tue=new Label("TUE二");tue.setFont(Font.font("Times New Roman",FontWeight.BOLD,12));
			Label wed=new Label("WED三");wed.setFont(Font.font("Times New Roman",FontWeight.BOLD,12));
			Label thu=new Label("THU四");thu.setFont(Font.font("Times New Roman",FontWeight.BOLD,12));
			Label fri=new Label("FRI五");fri.setFont(Font.font("Times New Roman",FontWeight.BOLD,12));
			Label sat=new Label("SAT六");sat.setFont(Font.font("Times New Roman",FontWeight.BOLD,12));sat.setTextFill(Color.BLUE);
			this.add(sun, 0, 0);
	        this.add(mon, 1, 0);
	        this.add(tue, 2, 0);
	        this.add(wed,3, 0);
	        this.add(thu, 4, 0);
	        this.add(fri,5, 0);
	        this.add(sat, 6, 0);
	        
	        Calendar c=new GregorianCalendar(year, month-1,1);//从这个月1号开始，0表示1月份
	        this.setGridLinesVisible(true);//显示网格线
	        int hang=1;
	        int totalDaysOfThisMonth=c.getActualMaximum(Calendar.DAY_OF_MONTH);//获取当前月的天数
	        Button[] dates=new Button[40];
	        for(int i=1;i<=totalDaysOfThisMonth;i++)
	        {
	        	int day=i;
	        	int dayOfWeek=c.get(Calendar.DAY_OF_WEEK)-1;//星期日是一周的第一天，星期六是一周的第7天
	        	dates[i]=new Button(Integer.toString(i));
	        	dates[i].setStyle("-fx-background-color:null;-fx-background-insets: 0;  -fx-pref-width: 42px;-fx-pref-height: 30px;");
        		Button date=dates[i];
        		int k=i;
	        	dates[i].setOnAction(e->{
	        		date.setStyle(" -fx-pref-width: 42px;-fx-pref-height: 30px;-fx-background-color:pink");//选中的颜色
	        		//此时只能有一个按钮的颜色是粉色
	        		for(int j=1;j<=totalDaysOfThisMonth;j++)
	        		{
	        			if(j!=k)
	        	        	dates[j].setStyle("-fx-background-color:null;-fx-background-insets: 0;  -fx-pref-width: 42px;-fx-pref-height: 30px;");
	        		}
					log.setTitle(year + "年" + month + "月" + day + "日");
					String s=String.format("%04d%02d%02d",year,month,day);
					s+=".txt";
					log.setURL(s);
	        	});//每选中一个日期就把右侧的文本的标题设为该日期
	        	this.add(dates[i], dayOfWeek, hang);
	        	if(c.get(Calendar.DAY_OF_WEEK)==7) hang++;
	        	c.add(Calendar.DAY_OF_MONTH,1);//日子数加一，变成下一天
	        }
		}
	}
    //时钟类,参考书上的代码
	class ClockPane extends Pane
	{
		private int hour,minute,second;
		//默认构造方法，设置现在的时间
		public ClockPane()
		{
			setCurrentTime();
		}
		//带参数的构造方法
		public ClockPane(int hour,int minute,int second)
		{
			this.hour=hour;this.minute=minute;this.second=second;
		}
		//get
		public int getHour() {return hour;}
		public int getMinute() {return minute;}
		public int getSecond() {return second;}
		//set新的时间之后重新显示时钟
		public void setHour(int h) {this.hour=h;paintClock();}
		public void setMinute(int m) {this.minute=m;paintClock();}
		public void setSecond(int s) {this.second=s;paintClock();}
		//
		public void setCurrentTime()
		{
			Calendar calendar=new GregorianCalendar();//公历
			this.hour=calendar.get(Calendar.HOUR_OF_DAY);
			this.minute=calendar.get(Calendar.MINUTE);
			this.second=calendar.get(Calendar.SECOND);
			paintClock();
		}
		//显示时钟
		public void paintClock()
		{
			getChildren().clear();
			double clockRadius=250*0.8*0.4;
			double centerX = 150 / 2.0 + 80;
			double centerY = 300 / 2.0 - 65;
			//59个圆点	，计算圆点的（x,y,r）
			for(int i = 0; i < 60; i++) {
				double x = centerX + Math.sin((i / 60.0) * 2 * Math.PI) * clockRadius;
				double y = centerY + Math.cos((i / 60.0) * 2 * Math.PI) * clockRadius;
				double radius= i%15==0?5:(i%5==0?3:1);//大圆点，中圆点，小圆点
				Circle c = new Circle(x,y,radius);
				if(i%5!=0 && i%15!=0) c.setFill(Color.BLACK);
				else c.setFill(Color.ORANGE);//颜色填充
				
				getChildren().add(c);//把外圈的圆点加入到栈组件中
			}
			//秒针
			double slength = clockRadius * 0.8;
			double secondX = centerX + slength * Math.sin((second / 60.0) * 2 * Math.PI);
			double secondY = centerY - slength * Math.cos((second / 60.0) * 2 * Math.PI); 
			Line sLine = new Line(centerX,centerY,secondX,secondY);
			sLine.setStrokeWidth(1);
			sLine.setStroke(Color.RED);
			//分针
			double mlength = clockRadius * 0.65;
			double minuteX = centerX + mlength * Math.sin((Math.PI / 60) * 2 * minute);
			double minuteY = centerY - mlength * Math.cos((Math.PI / 60) * 2 * minute);
			Line mLine = new Line(centerX,centerY,minuteX,minuteY);
			mLine.setStrokeWidth(2);
			mLine.setStroke(Color.BLUE);
			//时针
			double hlength = clockRadius * 0.5;
			double hourX = centerX + hlength * Math.sin((Math.PI / 12) * 2 * (hour % 12 + minute / 60.0));
			double hourY = centerY - hlength * Math.cos((Math.PI / 12) * 2 * (hour % 12 + minute / 60.0));
			Line hLine = new Line(centerX,centerY,hourX,hourY);
			hLine.setStrokeWidth(4);
			hLine.setStroke(Color.ORANGE);
			setStyle("-fx-background-color:gray");
			getChildren().addAll(sLine,mLine,hLine);//把指针加入到栈组件中
		}
	}
	public static void main(String[] args)
	{
		launch(args);
	}

}