Merge pull request '计算器' (#1) from wqf01 into main

01/src/Calculator.java

@@ -0,0 +1,28 @@
+import javafx.application.Application;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.Parent;
+import javafx.scene.Scene;
+import javafx.stage.Stage;
+
+import java.io.IOException;
+import java.net.URL;
+
+public class Calculator extends Application {
+
+    public static void main(String[] args) {
+        launch(args);
+    }
+
+    @Override
+    public void start(Stage primaryStage) throws IOException {
+        //找到FXML文件
+        URL url = getClass().getResource("CalculatorView.fxml");
+        //用FXML创建树，得到根节点
+        Parent root = FXMLLoader.load(url);
+        Scene scene = new Scene(root,282,330);
+        primaryStage.setTitle("计算器");
+        primaryStage.setScene(scene);
+        primaryStage.show();
+    }
+}
+

01/src/CalculatorController.java

@@ -0,0 +1,46 @@
+import javafx.event.ActionEvent;
+import javafx.fxml.FXML;
+import javafx.scene.control.Label;
+import javafx.scene.control.Button;
+
+import javax.script.ScriptEngine;
+import javax.script.ScriptEngineManager;
+import javax.script.ScriptException;
+
+public class CalculatorController {
+
+    @FXML
+    private Label display; // 用于显示计算结果的标签
+
+    private StringBuilder currentInput = new StringBuilder(); // 存储当前输入
+
+    public void handleButtonClick(ActionEvent actionEvent) {
+        String buttonText = ((Button) actionEvent.getSource()).getText(); // 获取被点击按钮的文本
+
+        if (buttonText.equals("C")) {
+            currentInput.setLength(0); // 清空输入
+            display.setText("0");
+        } else if (buttonText.equals("=")) {
+            calculateResult(); // 计算结果
+        } else {
+            if (currentInput.length() < 10) { // 限制输入长度
+                currentInput.append(buttonText); // 更新输入
+                display.setText(currentInput.toString()); // 更新显示
+            }
+        }
+    }
+
+    private void calculateResult() {
+        ScriptEngineManager manager = new ScriptEngineManager();
+        ScriptEngine engine = manager.getEngineByName("JavaScript"); // 使用JavaScript引擎进行计算
+        try {
+            Object result = engine.eval(currentInput.toString()); // 计算结果
+            display.setText(result.toString()); // 更新显示
+            currentInput.setLength(0); // 清空当前输入
+            currentInput.append(result.toString()); // 将结果设置为下一个计算的输入
+        } catch (ScriptException e) {
+            display.setText("Error"); // 处理错误
+            currentInput.setLength(0); // 清空输入
+        }
+    }
+}

01/src/CalculatorView.fxml

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.scene.control.Button?>
+<?import javafx.scene.control.Label?>
+<?import javafx.scene.layout.BorderPane?>
+<?import javafx.scene.layout.GridPane?>
+
+<BorderPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1" fx:controller="CalculatorController">
+    <center>
+        <GridPane prefHeight="300.0" prefWidth="300.0" BorderPane.alignment="CENTER">
+            <Label fx:id="display" text="0" style="-fx-font-size: 24; -fx-padding: 10;" GridPane.rowIndex="0" GridPane.columnSpan="4"/>
+
+            <Button text="7" onAction="#handleButtonClick" GridPane.rowIndex="1" GridPane.columnIndex="0" minWidth="70" minHeight="70"/>
+            <Button text="8" onAction="#handleButtonClick" GridPane.rowIndex="1" GridPane.columnIndex="1" minWidth="70" minHeight="70"/>
+            <Button text="9" onAction="#handleButtonClick" GridPane.rowIndex="1" GridPane.columnIndex="2" minWidth="70" minHeight="70"/>
+            <Button text="/" onAction="#handleButtonClick" GridPane.rowIndex="1" GridPane.columnIndex="3" minWidth="70" minHeight="70"/>
+
+            <Button text="4" onAction="#handleButtonClick" GridPane.rowIndex="2" GridPane.columnIndex="0" minWidth="70" minHeight="70"/>
+            <Button text="5" onAction="#handleButtonClick" GridPane.rowIndex="2" GridPane.columnIndex="1" minWidth="70" minHeight="70"/>
+            <Button text="6" onAction="#handleButtonClick" GridPane.rowIndex="2" GridPane.columnIndex="2" minWidth="70" minHeight="70"/>
+            <Button text="*" onAction="#handleButtonClick" GridPane.rowIndex="2" GridPane.columnIndex="3" minWidth="70" minHeight="70"/>
+
+            <Button text="1" onAction="#handleButtonClick" GridPane.rowIndex="3" GridPane.columnIndex="0" minWidth="70" minHeight="70"/>
+            <Button text="2" onAction="#handleButtonClick" GridPane.rowIndex="3" GridPane.columnIndex="1" minWidth="70" minHeight="70"/>
+            <Button text="3" onAction="#handleButtonClick" GridPane.rowIndex="3" GridPane.columnIndex="2" minWidth="70" minHeight="70"/>
+            <Button text="-" onAction="#handleButtonClick" GridPane.rowIndex="3" GridPane.columnIndex="3" minWidth="70" minHeight="70"/>
+
+            <Button text="0" onAction="#handleButtonClick" GridPane.rowIndex="4" GridPane.columnIndex="0" minWidth="70" minHeight="70"/>
+            <Button text="=" onAction="#handleButtonClick" GridPane.rowIndex="4" GridPane.columnIndex="1" minWidth="70" minHeight="70"/>
+            <Button text="C" onAction="#handleButtonClick" GridPane.rowIndex="4" GridPane.columnIndex="2" minWidth="70" minHeight="70"/>
+            <Button text="+" onAction="#handleButtonClick" GridPane.rowIndex="4" GridPane.columnIndex="3" minWidth="70" minHeight="70"/>
+        </GridPane>
+    </center>
+</BorderPane>
+
+
+