JavaFX 选择图像后将其设置到 ImageView

Question

我想借助 JFileChooser 选择 HDD 上的图片并将其显示在 GUI 中。
问题是我无法将所选图像设置到 ImageView。我认为我做的事情完全错误，但我也尝试了各种其他方法来显示它，例如使用 BufferedImage 但对我来说没有任何作用。
我不明白这一点，请帮助我。

Controller :

package application;

import java.io.File;
import java.net.MalformedURLException;
import javax.swing.JFileChooser;
import javax.swing.filechooser.FileSystemView;
import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
import javafx.scene.image.ImageView;


public class WindowController {
	
	@FXML private Button btn_load;
	@FXML private TextField text_path;
	@FXML private ImageView img_frame;
	
	public Main main;
	
	public void setMain(Main main) {
		this.main = main;
	}
	

	@FXML
	public void handle_load() throws MalformedURLException{
		JFileChooser chooser = new JFileChooser(FileSystemView.getFileSystemView().getHomeDirectory());
		int returnValue = chooser.showOpenDialog(null);
		
		if (returnValue == JFileChooser.APPROVE_OPTION) {
			text_path.setText(chooser.getSelectedFile().getAbsolutePath());
			File file = new File(chooser.getSelectedFile().getAbsolutePath());
			String localURL = file.toURI().toURL().toString();
			img_frame.setImage(localURL);
		}
	}
}

还有 fxml:

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.image.*?>
<?import javafx.scene.text.*?>
<?import javafx.scene.control.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.layout.AnchorPane?>

<AnchorPane prefHeight="700.0" prefWidth="900.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.WindowController">
   <children>
      <ImageView fx:id="img_frame" fitHeight="516.0" fitWidth="627.0" layoutX="142.0" layoutY="114.0" pickOnBounds="true" preserveRatio="true" AnchorPane.bottomAnchor="97.0" AnchorPane.leftAnchor="142.0" AnchorPane.rightAnchor="142.0" AnchorPane.topAnchor="114.0" />
      <HBox layoutX="14.0" layoutY="14.0" prefHeight="25.0" prefWidth="885.0" AnchorPane.leftAnchor="14.0" AnchorPane.rightAnchor="12.0">
         <children>
            <Button fx:id="btn_load" mnemonicParsing="false" onAction="#handle_load" text="Load Image" HBox.hgrow="NEVER" />
            <TextField fx:id="text_path" prefHeight="25.0" prefWidth="0.0" HBox.hgrow="SOMETIMES" />
         </children>
      </HBox>
   </children>
</AnchorPane>

Answer 1

无需将其添加到网址，只需添加

img_view.setImage(new Image(url));

它会解决你的问题