如果选中了JCheckbox，则更新JTable中的JProgressbar

Question

我在更新进度条时遇到问题。如果我选中复选框，文件将自动复制，但进度仍然为0。我使用SwingWokrer，但我不知道如何进行进度条更新。我尝试了很多组合，但都不起作用。

---

此代码负责从所选行下载文件。

jTable.getModel().addTableModelListener(new TableModelListener() {
public void tableChanged(TableModelEvent e) {
int row = e.getFirstRow();
int column = e.getColumn();
TableModel tableModel = (TableModel) e.getSource();
Boolean dataObject = (Boolean) tableModel.getValueAt(row,column);
String fileNameToCopy = (String) tableModel.getValueAt(row, 0);
Long fileSize = (Long) tableModel.getValueAt(row, 1);
Float progress = (Float) tableModel.getValueAt(row, 3);
if (dataObject == true) {
customTableData.setFile(new File(fileNameToCopy));
customTableData.setFileSize(fileSize);
customTableData.setProgress(progress);;
copyFiles = new CopyFiles(customTableData);
}
}
});

---

CustomTableData.java

public class CustomTableData {
private File file;
private long fileSize;
private Boolean edit = false;
private float progress;
public CustomTableData() {}
public File getFile() {
return file;
}
public void setFile(File file) {
this.file = file;
}
public long getFileSize() {
return fileSize;
}
public void setFileSize(long fileSize) {
this.fileSize = fileSize;
}
public Boolean isEdit() {
return edit;
}
public void setEdit(Boolean edit) {
this.edit = edit;
}
public float getProgress() {
return progress;
}
public void setProgress(float progress) {
this.progress = progress;
}
}

---

My CopyFiles.java类

private String fileName;
private long fileSize;
private float progress;
private CustomTableData data;
public CopyFiles(CustomTableData data) {
this.data = new CustomTableData();
this.fileName = data.getFile().getName();
this.fileSize = data.getFileSize();
this.progress = data.getProgress();
worker.execute();
}
SwingWorker<Void, Float> worker = new SwingWorker<Void, Float>(){
@Override
protected Void doInBackground() throws Exception {

InputStream is = null;
OutputStream os = null;
try {
is = new FileInputStream(source + fileName);
os = new FileOutputStream(destination + fileName);
byte[] buffer = new byte[BUFFER];
int length = 0;
float pro = 0;
while((length = is.read(buffer)) != -1) {
publish(pro += length);
os.write(buffer, 0, length);
}
} catch (Exception e) {
e.getMessage();
} finally {
try {
is.close();
os.close();
} catch (IOException e) {
e.getMessage();
}
}
return null;
}
protected void process(java.util.List<Float> chunks) {
for (Float f : chunks) {
progress = (f*100) / fileSize;
System.out.println("Percentage progress: " + progress + " >>> file size: " + f);
}
};
protected void done() {
System.out.println("FILE: " + fileName + " SIZE: " + fileSize);
};          
};
}

---

和我的CustomTableModel.java类

public class CustomTableModel extends AbstractTableModel {
private static final long serialVersionUID = -2929662905556163705L;
@SuppressWarnings("unused")
private File dir;
private File[] fileArray;
private List<CustomTableData> filesList;
private CustomTableData fileRow;
public CustomTableModel(File dir) {
this.dir = dir;
this.filesList = new ArrayList<CustomTableData>();
this.fileArray = dir.listFiles();
fileLoop();
}
private void fileLoop() {
for (int i = 0; i < fileArray.length; i++) {
this.fileRow = new CustomTableData();
if (fileArray[i].isFile()) {
fileRow.setFile(fileArray[i]);
fileRow.isEdit();
fileRow.getProgress();
filesList.add(fileRow);
}
}
}
private ResourceBundle resourceBundle = ResourceBundle.getBundle("MessageBundle", Locale.forLanguageTag("pl"));
protected String[] columns = new String[] {
resourceBundle.getString("fileName"),
resourceBundle.getString("fileSize") + " [byte]",
resourceBundle.getString("getFile"),
resourceBundle.getString("progress")};

@SuppressWarnings("rawtypes")
protected Class[] columnClasses = {String.class , Long.class, JCheckBox.class, JProgressBar.class};
public int getColumnCount() {
return columns.length;
}
public int getRowCount() {
return filesList.size();
}
public String getColumnName(int col) {
return columns[col].toString();
}
public Class<?> getColumnClass(int c) {
switch (c) {
case 0:
return String.class;
case 1:
return Long.class;
case 2:
return Boolean.class;
case 3:
return Float.class;
default:
return null;
}
}
public Object getValueAt(int row, int col) {
fileRow = filesList.get(row);
switch (col) {
case 0:
return fileRow.getFile().getName();
case 1:
return fileRow.getFile().length();
case 2:
return fileRow.isEdit();
case 3:
return fileRow.getProgress();
default:
return null;
}
}
public boolean isCellEditable(int row, int col) {
switch (col) {
case 0:
return false;
case 1:
return false;
case 2:
return true;
case 3:
return false;
default:
return false;
}
}   
public void setValueAt(Object aValue, int row, int column) {
fileRow = filesList.get(row);
if (column == 2) {
fileRow.setEdit((Boolean)aValue);
fireTableCellUpdated(row, column);
}
}
}

---

这是我的ProgressBarRenderer.java类

public class ProgressBarRenderer extends JProgressBar implements TableCellRenderer {
private static final long serialVersionUID = 551156559687881082L;
public ProgressBarRenderer() {
super();
}
public ProgressBarRenderer(int min, int max) {
super(min, max);
}
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
setValue((int) ((Float) value).floatValue());
return this;
}
}

---

我的表格视图

Answer 1

Rozwińzanie

Progressbar jest prawidłowo aktualizowany w metodzie process((

public class CopyFiles {
private static final int BUFFER = 1024;
private int row;
private CustomTableModel customTableModel;
private String fileName;
private File file;
public CopyFiles(String fileName, CustomTableModel customTableModel, int row) {
this.fileName = fileName;
this.file = new File(PathEnum.SOURCE.getPath() + fileName);
this.customTableModel = customTableModel;
this.row = row;
worker.execute();
}
public String getFile() {
return file.getName();
}
public long getFileSize() {
return file.length();
}
public SwingWorker<Void, Float> getWorker() {
return worker;
}
SwingWorker<Void, Float> worker = new SwingWorker<Void, Float>() {
@Override
protected Void doInBackground() throws Exception {
InputStream is = null;
OutputStream os = null;

float progress = 0;
try {
is = new FileInputStream(PathEnum.SOURCE.getPath() + getFile());
os = new FileOutputStream(PathEnum.DESTINATION.getPath() + getFile());

byte[] buffer = new byte[BUFFER];

long count = 0;
int bufferLength;
while ((bufferLength = is.read(buffer)) != -1) {
count += bufferLength;
os.write(buffer, 0, bufferLength);
progress = (int) ((count * 100) / getFileSize());
publish(progress);
}
} catch (Exception e) {
e.getMessage();
} finally {
try {
is.close();
os.close();
} catch (IOException e) {
e.getMessage();
}
}
return null;
}

protected void process(List<Float> chunks) {
float currentProgress = chunks.get(chunks.size()-1);
customTableModel.setValueAt(currentProgress, row, 3);
};
protected void done() {
System.out.println("FILE: " + getFile() + " SIZE: " + getFileSize());
};
};