JavaFx runnable JAR导出不起作用

Question

问题出在哪里？我怎么修好它？

下面是Controller类函数的代码：

package imran.jfx.application;

import java.io.File;
import java.net.URL;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ResourceBundle;

import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Label;
import javafx.scene.control.ScrollPane;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.text.Text;

public class Application_Controler implements Initializable{

    @FXML
    private HBox hBox;

    @FXML
    private Label searchLabel;

    @FXML
    private TextField searchWord;

    @FXML
    private VBox vBox;

    @FXML
    private Text BanglaMeaning;

    @FXML
    private TextArea bnMeaningTxt;

    @FXML
    private Text bAcaMeaning;

    @FXML
    private ScrollPane bAcaMeaningImg;

    @FXML
    private Label footerLabel;

    ResultSet result;
    PreparedStatement doQuery;
    Connection conn;
    String query;

    @Override
    public void initialize(URL location, ResourceBundle resources) {
        try 
        {
            Class.forName("org.sqlite.JDBC");
        } 
        catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
        String url="jdbc:sqlite:src/imran/ankurdb/meaning/bn_words.db";
        try 
        {
            conn = DriverManager.getConnection(url);
        } 
        catch (SQLException e) {
            e.printStackTrace();
        }
    }

    @FXML
    void showMeaning(ActionEvent event) throws Exception {
        bnMeaningTxt.clear();

        String text=searchWord.getText();

        query = "select en_word,bn_word from words where en_word='"+text+"'";

        doQuery = conn.prepareStatement(query);
        result = doQuery.executeQuery();

        int i=0;
        while (result.next()) 
        {
            if(i==0)
            {
                bnMeaningTxt.appendText(result.getString(1) + "\t\t" + result.getString(2));
                i++;
            }
            else
                bnMeaningTxt.appendText(" , "+result.getString(2));
        }

        File file = new File("src/imran/bnacademy/meaning/"+text);
        Image image = new Image(file.toURI().toString());
        bAcaMeaningImg.setContent(new ImageView(image));
    }

}

Answer 1

这里有多重问题。

>

您正试图在项目中创建数据库文件。当您已经将项目打包为jar时，这是行不通的。您应该在项目外部给它一个URL。数据库文件应该总是放在项目之外，这样当您将项目打包为jar时，它们仍然可以被创建、读取和写入。

如果图像存在于jar中，则不能使用io.file加载图像。您需要使用类加载器来加载它们。

URL url = getClass().getResource("/imran/bnacademy/meaning/" + text);
Image image = new Image(url.toExternalForm());