JavaFX - TableView 中的不可见数据
JavaFX - Invisible Data in a TableView
我正在编写一个程序,它从文件 (csv) 中动态读取数据并将其放入 TableView(创建动态行和列)。
我的问题是 table.
中的数据不可见
我正在使用 IntelliJ IDEA 13.1.4、JavaFX Scene Builder 2.0 和最新的 JavaFX 版本。
感谢您的帮助...
我的代码:
Main.java
package sample;
import javafx.application.Application; import javafx.fxml.FXMLLoader;
import javafx.scene.Parent; import javafx.scene.Scene; import
javafx.stage.Stage;
public class Main extends Application {
@Override
public void start(Stage primaryStage) throws Exception{
Parent root = FXMLLoader.load(getClass().getResource("Main1.fxml"));
primaryStage.setTitle("File Converter");
primaryStage.setScene(new Scene(root, 800, 600));
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
} }
Convert.java(这里我是从文件中读取数据,放到一个String[]列表中)
package sample;
import com.sun.org.apache.xerces.internal.xs.StringList;
import javafx.application.Platform;
import javafx.geometry.Insets;
import javafx.scene.Node;
import javafx.scene.control.*;
import javafx.scene.layout.GridPane;
import javafx.util.Pair;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
import java.sql.SQLException;
import java.util.*;
public class Convert {
public String delimiterYes;
public LinkedList<String> fileStrings= new LinkedList<>();
private final List<String[]> jdata = new LinkedList<>();
Controller filedata;
String[] s;
int colums;
String[] splitted;
public List<String[]> insertDataFromFile(String filePath) throws IOException {
filedata = new Controller();
FileInputStream file = new FileInputStream(filePath);
InputStreamReader isr = new InputStreamReader(file, Charset.forName("UTF-8"));
BufferedReader bufferedReader = new BufferedReader(isr);
while (bufferedReader.ready()) {
String lines = bufferedReader.readLine();
fileStrings.add(lines);
splitted=(lines.split(";"));
jdata.add(splitted);
}
int l = 0;
for(String[] str: jdata){
if(str.length > l){
l = str.length;
}
}System.out.println(l);
s = fileStrings.get(0).split(";");
colums = l;
return jdata;
}
public String[] getHeader() {
return s;
}
public int getColums() {
return colums;
}
}
Controller.java
package sample;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.scene.control.*;
import javafx.scene.control.TextField;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.stage.FileChooser;
import java.io.*;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;
import java.util.*;
import java.util.List;
import javafx.scene.control.Button;
import javafx.scene.control.TableView;
public class Controller {
public List<String[]> jdata = new LinkedList<>();
String path;
@FXML
private Button tcodeBtn;
@FXML
private TableView<String[]> sourceTable=new TableView<String[]>();
private ObservableList<String[]> srcData;// = FXCollections.observableArrayList();
@FXML
private TableView<String> finalTable;
ObservableList<String> fnlTable;
@FXML
private Button moveBtn;
@FXML
private Button cnvrtBtn;
@FXML
private Button openBtn;
@FXML
private Button delteBtn;
@FXML
private Button splitBtn;
@FXML
private Button addBtn;
@FXML
private Button linkBtn;
@FXML
private Button saveBtn;
Convert converter= new Convert();
@FXML
void openAction(ActionEvent event) throws IOException {
FileChooser fileChooser = new FileChooser();
fileChooser.setTitle("Open Resource File");
fileChooser.getExtensionFilters().addAll(
new FileChooser.ExtensionFilter("All Files", "*.*"));
File selectedFile = fileChooser.showOpenDialog(null);
if(selectedFile != null){
sourceTable.getItems().clear();
sourceTable.getColumns().clear();
srcInput.setText(selectedFile.getAbsolutePath());
//converter.delimiter();
path=selectedFile.getAbsolutePath();
jdata = converter.insertDataFromFile(path);
showTable(converter);
initialize();
}
}
@FXML
void saveAction(ActionEvent event) throws IOException {
FileChooser fileChooser = new FileChooser();
fileChooser.setTitle("Save Resource File");
fileChooser.getExtensionFilters().addAll(
new FileChooser.ExtensionFilter("CSV", "*.csv"),
new FileChooser.ExtensionFilter("JPG", "*.jpg"),
new FileChooser.ExtensionFilter("Text", "*.txt"));
File file = fileChooser.showSaveDialog(null);
if (file != null) {
String content = "Hello File; Test; Test; Test; 123456";
Files.write(Paths.get(file.getAbsolutePath()), content.getBytes(), StandardOpenOption.CREATE);
}
}
@FXML
private TextField srcInput;
Convert converted = new Convert();
int clms = converted.getColums();
public void showTable(Convert cnv) {
sourceTable.setEditable(true);
clms = cnv.getColums();
for (int i = 0; i < clms; i++) {
TableColumn firstNameCol = new TableColumn("\tC"+(i+1)+" \t");
firstNameCol.setMinWidth(20);
firstNameCol.setCellValueFactory(new PropertyValueFactory<String, String>("\tC"+(i+1)+" \t"));
sourceTable.getColumns().add(firstNameCol);
}
srcData = FXCollections.observableList(jdata);
sourceTable.setItems(srcData);
}
@FXML
void initialize() {
assert tcodeBtn != null : "fx:id=\"tcodeBtn\" was not injected: check your FXML file 'FXML.fxml'.";
assert sourceTable != null : "fx:id=\"sourceTable\" was not injected: check your FXML file 'FXML.fxml'.";
assert finalTable != null : "fx:id=\"finalTable\" was not injected: check your FXML file 'FXML.fxml'.";
assert srcInput != null : "fx:id=\"srcInput\" was not injected: check your FXML file 'FXML.fxml'.";
assert moveBtn != null : "fx:id=\"moveBtn\" was not injected: check your FXML file 'FXML.fxml'.";
assert cnvrtBtn != null : "fx:id=\"cnvrtBtn\" was not injected: check your FXML file 'FXML.fxml'.";
assert openBtn != null : "fx:id=\"openBtn\" was not injected: check your FXML file 'FXML.fxml'.";
assert delteBtn != null : "fx:id=\"delteBtn\" was not injected: check your FXML file 'FXML.fxml'.";
assert splitBtn != null : "fx:id=\"splitBtn\" was not injected: check your FXML file 'FXML.fxml'.";
assert addBtn != null : "fx:id=\"addBtn\" was not injected: check your FXML file 'FXML.fxml'.";
assert linkBtn != null : "fx:id=\"linkBtn\" was not injected: check your FXML file 'FXML.fxml'.";
assert saveBtn != null : "fx:id=\"saveBtn\" was not injected: check your FXML file 'FXML.fxml'.";
}
}
FXML.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.effect.*?>
<?import javafx.scene.control.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<AnchorPane prefHeight="600.0" prefWidth="800.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.Controller">
<children>
<Button fx:id="delteBtn" layoutX="32.0" layoutY="272.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" mnemonicParsing="false" prefHeight="30.0" prefWidth="90.0" text="DELETE" />
<Button fx:id="addBtn" layoutX="138.0" layoutY="272.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" mnemonicParsing="false" prefHeight="30.0" prefWidth="90.0" text="ADD" />
<Button fx:id="moveBtn" layoutX="243.0" layoutY="272.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" mnemonicParsing="false" prefHeight="30.0" prefWidth="90.0" text="MOVE" />
<Button fx:id="linkBtn" layoutX="350.0" layoutY="272.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" mnemonicParsing="false" prefHeight="30.0" prefWidth="90.0" text="LINK" />
<Button fx:id="splitBtn" layoutX="461.0" layoutY="272.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" mnemonicParsing="false" prefHeight="30.0" prefWidth="90.0" text="SPLIT" />
<Button fx:id="tcodeBtn" layoutX="569.0" layoutY="272.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" mnemonicParsing="false" prefHeight="30.0" prefWidth="90.0" text="TRANSCODE" />
<Button fx:id="cnvrtBtn" layoutX="679.0" layoutY="272.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" mnemonicParsing="false" prefHeight="30.0" prefWidth="90.0" text="CONVERT" />
<Button fx:id="saveBtn" layoutX="684.0" layoutY="551.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" mnemonicParsing="false" onAction="#saveAction" prefHeight="30.0" prefWidth="90.0" text="SAVE" />
<TableView fx:id="sourceTable" editable="true" layoutX="17.0" layoutY="65.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" prefHeight="190.0" prefWidth="766.0" />
<TableView fx:id="finalTable" layoutX="17.0" layoutY="348.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" prefHeight="190.0" prefWidth="766.0" />
<Button fx:id="openBtn" layoutX="572.0" layoutY="551.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" mnemonicParsing="false" onAction="#openAction" prefHeight="30.0" prefWidth="90.0" text="OPEN" />
<TextField fx:id="srcInput" editable="false" layoutX="69.0" layoutY="551.0" prefHeight="30.0" prefWidth="495.0" />
<TextField editable="false" layoutX="17.0" layoutY="36.0" text="Source File" />
<TextField editable="false" layoutX="17.0" layoutY="319.0" text="Converted File" />
</children>
</AnchorPane>
CSV 示例(只需将其保存为 .csv)
TagS;TagN;MonatS;MonatN;Jahr;ME;
Montag;1;Februar;2;2015;Stk;
Dienstag;5;Mai;5;2015;Stk;
Mittwoch;11;April;4;2015;Stk;
Donnerstag;17;Juli;7;2015;Stk;
Freitag;20;August;8;2015;Stk;
Samstag;25;November;11;2015;Stk;
Sonntag;31;Dezember;12;2015;Stk;
-截图-http://i.imgur.com/O4RpfrA.png
就是这样,数据不可见,但列数和行数是准确的
你的cellValueFactory
错了。请参阅 PropertyValueFactory
的文档;这将查看您的行数据 (a String[]
) 并尝试找到一种形式为 C1 \tProperty()
的方法,这当然不存在。
您需要做的:
for (int i = 0; i < clms; i++) {
TableColumn<String[], String> firstNameCol = new TableColumn<>("\tC"+(i+1)+" \t");
firstNameCol.setMinWidth(20);
int index = i ;
firstNameCol.setCellValueFactory(cellData -> {
String[] rowData = cellData.getValue();
if (index >= rowData.length) {
return new ReadOnlyStringWrapper("");
} else {
String cellValue = rowData[index];
return new ReadOnlyStringWrapper(cellValue);
}
});
sourceTable.getColumns().add(firstNameCol);
}
我正在编写一个程序,它从文件 (csv) 中动态读取数据并将其放入 TableView(创建动态行和列)。
我的问题是 table.
中的数据不可见我正在使用 IntelliJ IDEA 13.1.4、JavaFX Scene Builder 2.0 和最新的 JavaFX 版本。
感谢您的帮助...
我的代码:
Main.java
package sample;
import javafx.application.Application; import javafx.fxml.FXMLLoader;
import javafx.scene.Parent; import javafx.scene.Scene; import
javafx.stage.Stage;
public class Main extends Application {
@Override
public void start(Stage primaryStage) throws Exception{
Parent root = FXMLLoader.load(getClass().getResource("Main1.fxml"));
primaryStage.setTitle("File Converter");
primaryStage.setScene(new Scene(root, 800, 600));
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
} }
Convert.java(这里我是从文件中读取数据,放到一个String[]列表中)
package sample;
import com.sun.org.apache.xerces.internal.xs.StringList;
import javafx.application.Platform;
import javafx.geometry.Insets;
import javafx.scene.Node;
import javafx.scene.control.*;
import javafx.scene.layout.GridPane;
import javafx.util.Pair;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
import java.sql.SQLException;
import java.util.*;
public class Convert {
public String delimiterYes;
public LinkedList<String> fileStrings= new LinkedList<>();
private final List<String[]> jdata = new LinkedList<>();
Controller filedata;
String[] s;
int colums;
String[] splitted;
public List<String[]> insertDataFromFile(String filePath) throws IOException {
filedata = new Controller();
FileInputStream file = new FileInputStream(filePath);
InputStreamReader isr = new InputStreamReader(file, Charset.forName("UTF-8"));
BufferedReader bufferedReader = new BufferedReader(isr);
while (bufferedReader.ready()) {
String lines = bufferedReader.readLine();
fileStrings.add(lines);
splitted=(lines.split(";"));
jdata.add(splitted);
}
int l = 0;
for(String[] str: jdata){
if(str.length > l){
l = str.length;
}
}System.out.println(l);
s = fileStrings.get(0).split(";");
colums = l;
return jdata;
}
public String[] getHeader() {
return s;
}
public int getColums() {
return colums;
}
}
Controller.java
package sample;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.scene.control.*;
import javafx.scene.control.TextField;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.stage.FileChooser;
import java.io.*;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;
import java.util.*;
import java.util.List;
import javafx.scene.control.Button;
import javafx.scene.control.TableView;
public class Controller {
public List<String[]> jdata = new LinkedList<>();
String path;
@FXML
private Button tcodeBtn;
@FXML
private TableView<String[]> sourceTable=new TableView<String[]>();
private ObservableList<String[]> srcData;// = FXCollections.observableArrayList();
@FXML
private TableView<String> finalTable;
ObservableList<String> fnlTable;
@FXML
private Button moveBtn;
@FXML
private Button cnvrtBtn;
@FXML
private Button openBtn;
@FXML
private Button delteBtn;
@FXML
private Button splitBtn;
@FXML
private Button addBtn;
@FXML
private Button linkBtn;
@FXML
private Button saveBtn;
Convert converter= new Convert();
@FXML
void openAction(ActionEvent event) throws IOException {
FileChooser fileChooser = new FileChooser();
fileChooser.setTitle("Open Resource File");
fileChooser.getExtensionFilters().addAll(
new FileChooser.ExtensionFilter("All Files", "*.*"));
File selectedFile = fileChooser.showOpenDialog(null);
if(selectedFile != null){
sourceTable.getItems().clear();
sourceTable.getColumns().clear();
srcInput.setText(selectedFile.getAbsolutePath());
//converter.delimiter();
path=selectedFile.getAbsolutePath();
jdata = converter.insertDataFromFile(path);
showTable(converter);
initialize();
}
}
@FXML
void saveAction(ActionEvent event) throws IOException {
FileChooser fileChooser = new FileChooser();
fileChooser.setTitle("Save Resource File");
fileChooser.getExtensionFilters().addAll(
new FileChooser.ExtensionFilter("CSV", "*.csv"),
new FileChooser.ExtensionFilter("JPG", "*.jpg"),
new FileChooser.ExtensionFilter("Text", "*.txt"));
File file = fileChooser.showSaveDialog(null);
if (file != null) {
String content = "Hello File; Test; Test; Test; 123456";
Files.write(Paths.get(file.getAbsolutePath()), content.getBytes(), StandardOpenOption.CREATE);
}
}
@FXML
private TextField srcInput;
Convert converted = new Convert();
int clms = converted.getColums();
public void showTable(Convert cnv) {
sourceTable.setEditable(true);
clms = cnv.getColums();
for (int i = 0; i < clms; i++) {
TableColumn firstNameCol = new TableColumn("\tC"+(i+1)+" \t");
firstNameCol.setMinWidth(20);
firstNameCol.setCellValueFactory(new PropertyValueFactory<String, String>("\tC"+(i+1)+" \t"));
sourceTable.getColumns().add(firstNameCol);
}
srcData = FXCollections.observableList(jdata);
sourceTable.setItems(srcData);
}
@FXML
void initialize() {
assert tcodeBtn != null : "fx:id=\"tcodeBtn\" was not injected: check your FXML file 'FXML.fxml'.";
assert sourceTable != null : "fx:id=\"sourceTable\" was not injected: check your FXML file 'FXML.fxml'.";
assert finalTable != null : "fx:id=\"finalTable\" was not injected: check your FXML file 'FXML.fxml'.";
assert srcInput != null : "fx:id=\"srcInput\" was not injected: check your FXML file 'FXML.fxml'.";
assert moveBtn != null : "fx:id=\"moveBtn\" was not injected: check your FXML file 'FXML.fxml'.";
assert cnvrtBtn != null : "fx:id=\"cnvrtBtn\" was not injected: check your FXML file 'FXML.fxml'.";
assert openBtn != null : "fx:id=\"openBtn\" was not injected: check your FXML file 'FXML.fxml'.";
assert delteBtn != null : "fx:id=\"delteBtn\" was not injected: check your FXML file 'FXML.fxml'.";
assert splitBtn != null : "fx:id=\"splitBtn\" was not injected: check your FXML file 'FXML.fxml'.";
assert addBtn != null : "fx:id=\"addBtn\" was not injected: check your FXML file 'FXML.fxml'.";
assert linkBtn != null : "fx:id=\"linkBtn\" was not injected: check your FXML file 'FXML.fxml'.";
assert saveBtn != null : "fx:id=\"saveBtn\" was not injected: check your FXML file 'FXML.fxml'.";
}
}
FXML.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.effect.*?>
<?import javafx.scene.control.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<AnchorPane prefHeight="600.0" prefWidth="800.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.Controller">
<children>
<Button fx:id="delteBtn" layoutX="32.0" layoutY="272.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" mnemonicParsing="false" prefHeight="30.0" prefWidth="90.0" text="DELETE" />
<Button fx:id="addBtn" layoutX="138.0" layoutY="272.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" mnemonicParsing="false" prefHeight="30.0" prefWidth="90.0" text="ADD" />
<Button fx:id="moveBtn" layoutX="243.0" layoutY="272.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" mnemonicParsing="false" prefHeight="30.0" prefWidth="90.0" text="MOVE" />
<Button fx:id="linkBtn" layoutX="350.0" layoutY="272.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" mnemonicParsing="false" prefHeight="30.0" prefWidth="90.0" text="LINK" />
<Button fx:id="splitBtn" layoutX="461.0" layoutY="272.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" mnemonicParsing="false" prefHeight="30.0" prefWidth="90.0" text="SPLIT" />
<Button fx:id="tcodeBtn" layoutX="569.0" layoutY="272.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" mnemonicParsing="false" prefHeight="30.0" prefWidth="90.0" text="TRANSCODE" />
<Button fx:id="cnvrtBtn" layoutX="679.0" layoutY="272.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" mnemonicParsing="false" prefHeight="30.0" prefWidth="90.0" text="CONVERT" />
<Button fx:id="saveBtn" layoutX="684.0" layoutY="551.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" mnemonicParsing="false" onAction="#saveAction" prefHeight="30.0" prefWidth="90.0" text="SAVE" />
<TableView fx:id="sourceTable" editable="true" layoutX="17.0" layoutY="65.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" prefHeight="190.0" prefWidth="766.0" />
<TableView fx:id="finalTable" layoutX="17.0" layoutY="348.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" prefHeight="190.0" prefWidth="766.0" />
<Button fx:id="openBtn" layoutX="572.0" layoutY="551.0" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" mnemonicParsing="false" onAction="#openAction" prefHeight="30.0" prefWidth="90.0" text="OPEN" />
<TextField fx:id="srcInput" editable="false" layoutX="69.0" layoutY="551.0" prefHeight="30.0" prefWidth="495.0" />
<TextField editable="false" layoutX="17.0" layoutY="36.0" text="Source File" />
<TextField editable="false" layoutX="17.0" layoutY="319.0" text="Converted File" />
</children>
</AnchorPane>
CSV 示例(只需将其保存为 .csv)
TagS;TagN;MonatS;MonatN;Jahr;ME;
Montag;1;Februar;2;2015;Stk;
Dienstag;5;Mai;5;2015;Stk;
Mittwoch;11;April;4;2015;Stk;
Donnerstag;17;Juli;7;2015;Stk;
Freitag;20;August;8;2015;Stk;
Samstag;25;November;11;2015;Stk;
Sonntag;31;Dezember;12;2015;Stk;
-截图-http://i.imgur.com/O4RpfrA.png
就是这样,数据不可见,但列数和行数是准确的
你的cellValueFactory
错了。请参阅 PropertyValueFactory
的文档;这将查看您的行数据 (a String[]
) 并尝试找到一种形式为 C1 \tProperty()
的方法,这当然不存在。
您需要做的:
for (int i = 0; i < clms; i++) {
TableColumn<String[], String> firstNameCol = new TableColumn<>("\tC"+(i+1)+" \t");
firstNameCol.setMinWidth(20);
int index = i ;
firstNameCol.setCellValueFactory(cellData -> {
String[] rowData = cellData.getValue();
if (index >= rowData.length) {
return new ReadOnlyStringWrapper("");
} else {
String cellValue = rowData[index];
return new ReadOnlyStringWrapper(cellValue);
}
});
sourceTable.getColumns().add(firstNameCol);
}