开发环境:jdk8
、openjfx11.0.2
、eclipse
当前内容主要为本人学习和了解使用SceneBuilder方式实现样式布局,并实现之前的格式化java源文件并显示(本人直接以lib方式导入javafx依赖)
基本步骤:
基本pom
<dependency>
<groupId>com.github.javaparsergroupId>
<artifactId>javaparser-symbol-solver-coreartifactId>
<version>3.22.1version>
dependency>
关于javaparser的使用参考之前的博文
1.直接在openjfx官方下载(这里选择jdk1.8的版本):openjfx-java1.8
2. 开始画图(直接开始画图操作)
3.为所有的组件添加fx:id属性,方便与controller中的属性进行绑定操作
4.最后生成一个fxml文件,考入启动main方法相同目录即可
javaFileFormatTolls.fxml其内容如下:
<VBox prefHeight="436.0" prefWidth="657.0" xmlns="http://javafx.com/javafx/8.0.151" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.hy.java.gui.javafx.javafile.controller.JavaFileFormatAppController" >
<children>
<GridPane alignment="CENTER_RIGHT" prefHeight="28.0" prefWidth="640.0">
<columnConstraints>
<ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
<ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
<ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
columnConstraints>
<rowConstraints>
<RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
rowConstraints>
<children>
<TextField fx:id="sourceJavaFilePath" GridPane.columnIndex="1" />
<Label alignment="CENTER_RIGHT" prefHeight="20.0" prefWidth="216.0" text="源文件" textAlignment="RIGHT">
<GridPane.margin>
<Insets />
GridPane.margin>
Label>
<Button mnemonicParsing="false" onAction="#handlerFormatButtonClick" text="格式化" GridPane.columnIndex="2" />
children>
<opaqueInsets>
<Insets />
opaqueInsets>
<VBox.margin>
<Insets bottom="10.0" top="10.0" />
VBox.margin>
GridPane>
<AnchorPane>
<children>
<SplitPane dividerPositions="0.5" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
<items>
<AnchorPane prefHeight="469.0" prefWidth="324.0">
<children>
<TextArea fx:id="leftTextArea" layoutY="7.0" prefHeight="278.0" prefWidth="315.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0" />
children>
AnchorPane>
<AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="278.0" prefWidth="253.0">
<children>
<TextArea fx:id="rightTextArea" editable="false" layoutX="7.0" prefHeight="278.0" prefWidth="315.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0" />
children>
AnchorPane>
items>
SplitPane>
children>
AnchorPane>
children>
VBox>
1.controller层:
package com.hy.java.gui.javafx.javafile.controller;
import java.io.File;
import java.io.IOException;
import java.util.Optional;
import com.hy.java.gui.javafx.javafile.FormatTools;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.Alert.AlertType;
import javafx.scene.control.Button;
import javafx.scene.control.ButtonType;
import javafx.scene.control.Dialog;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;
import javafx.stage.Stage;
import javafx.scene.control.ButtonBar;
public class JavaFileFormatAppController {
@FXML
TextArea leftTextArea;
@FXML
TextArea rightTextArea;
@FXML
TextField sourceJavaFilePath;
@FXML
public void handlerFormatButtonClick() {
//System.out.println("点击当前的格式化按钮");
//System.out.println("开始获取当前左边文本框中的内容:" + leftTextArea.getText());
//System.out.println("开始获取当前右边文本框中的内容:" + rightTextArea.getText());
//System.out.println("开始和获取输入框的内容:" + sourceJavaFilePath.getText());
String text = sourceJavaFilePath.getText();
if (isEmpty(text)) {
// 提示输入文件
showErrorAlert("错误", "请输入需要格式化的java源文件");
return;
} else {
File file = new File(text);
if (file.exists() && !file.isDirectory() && file.canRead()) {
try {
String leftTextAreaContext = this.leftTextArea.getText();
if (isEmpty(leftTextAreaContext)) {
String fileContext = FormatTools.getFileContext(file);
leftTextArea.setText(fileContext);
String formatJavaFile = FormatTools.formatJavaFile(fileContext);
rightTextArea.setText(formatJavaFile);
}
} catch (IOException e) {
//e.printStackTrace();
showErrorAlert("错误",e.getMessage());
}
} else {
// 不可操作
showErrorAlert("错误", "当前文件不可读");
}
}
}
/**
*
* @author hy
* @createTime 2021-07-25 10:02:01
* @description 弹出一个消息框
* @param title
* @param msg
*
*/
private void showErrorAlert(String title, String msg) {
Alert alert = new Alert(AlertType.ERROR, msg, ButtonType.YES, ButtonType.NO);
alert.setTitle(title);
alert.setHeaderText("");
Optional<ButtonType> showAndWait = alert.showAndWait();
if (showAndWait.get() == ButtonType.YES) {
alert.close();
}
}
private boolean isEmpty(String text) {
if (text == null || "".equals(text.trim())) {
return true;
}
return false;
}
}
其中以@FXML开始的就是绑定的对应fxml中的组件中的fx:controller范围内的fx:id,或者#方法名称
2.开始编写文件格式化工具(FormatTools.java)
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.List;
import java.util.Optional;
import com.github.javaparser.JavaParser;
import com.github.javaparser.ParseResult;
import com.github.javaparser.ast.CompilationUnit;
import com.github.javaparser.ast.ImportDeclaration;
import com.github.javaparser.ast.Node;
import com.github.javaparser.ast.PackageDeclaration;
import de.hunsicker.jalopy.Jalopy;
public abstract class FormatTools {
public static String formatJavaFile(String fileContext) {
JavaParser javaParser = new JavaParser();
ParseResult<CompilationUnit> parse = javaParser.parse(fileContext);
StringBuffer buffer = new StringBuffer();
if (parse.isSuccessful()) {
Optional<CompilationUnit> result = parse.getResult();
CompilationUnit compilationUnit = result.get();
List<Node> childNodes = compilationUnit.getChildNodes();
for (Node node : childNodes) {
if (node instanceof ImportDeclaration) {
buffer.append(String.valueOf(node));
} else if (node instanceof PackageDeclaration) {
buffer.append(String.valueOf(node));
} else {
buffer.append(String.valueOf(node));
buffer.append("\r\n");
}
}
}
return buffer.toString();
}
public static String getFileContext(File file) throws IOException {
StringBuffer buffer = new StringBuffer();
try (BufferedReader bufferReader = new BufferedReader(new InputStreamReader(new FileInputStream(file)))) {
String line = null;
while ((line = bufferReader.readLine()) != null) {
buffer.append(line);
buffer.append("\r\n");
}
}
return buffer.toString();
}
}
3.开始编写入口类
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class JavaFileFormatTest extends Application {
public static void main(String[] args) {
launch(args);
}
@Override
public void start(Stage stage) throws Exception {
Parent root = FXMLLoader.load(getClass().getResource("javaFileFormatTools.fxml"));
Scene scene = new Scene(root, 1200,800);
stage.setTitle("Java File Formatter");
stage.setScene(scene);
stage.show();
}
}