我一直在尝试在两个线程上运行两个任务，并在进度条和进度指示器上显示它们的进度。
第一项任务是copyTask，第二项是复制文件。 copyTask将文件对象发送到copyFile以进行文件复制。 但问题是只复制一个文件，文件计数似乎是正确的。
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.ResourceBundle;
import java.util.concurrent.CountDownLatch;
import javafx.concurrent.Task;
import javafx.concurrent.WorkerStateEvent;
import javafx.event.EventHandler;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Label;
import javafx.scene.control.ProgressBar;
import javafx.scene.control.ProgressIndicator;
import javafx.scene.control.TextArea;
/**
* FXML Controller class
*
* @author ANIL
*/
public class ProgressIndicateController implements Initializable {
@FXML
private ProgressIndicator uploadIndicator;
@FXML
private ProgressBar uploadBar;
@FXML
private TextArea errTxt;
@FXML
private Label uploadTxt;
File f;
Thread parent,child;
CountDownLatch latch = new CountDownLatch(1);
@FXML
private Label sizeTXT;
// private CopyTask copyTask;
/**
* Initializes the controller class.
*/
@Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
// Unbind progress property
uploadBar.progressProperty().unbind();
// Bind progress property
uploadBar.progressProperty().bind(copyFile.progressProperty());
// Hủy bỏ kết nối thuộc tính progress
uploadIndicator.progressProperty().unbind();
// Bind progress property.
uploadIndicator.progressProperty().bind(copyTask.progressProperty());
// Unbind text property for Label.
uploadTxt.textProperty().unbind();
// Bind the text property of Label
// with message property of Task
uploadTxt.textProperty().bind(copyTask.messageProperty());
// Unbind text property for Label.
sizeTXT.textProperty().unbind();
// Bind the text property of Label
// with message property of Task
sizeTXT.textProperty().bind(copyFile.messageProperty());
// When completed tasks
copyTask.addEventHandler(WorkerStateEvent.WORKER_STATE_SUCCEEDED, //
new EventHandler<WorkerStateEvent>() {
@Override
public void handle(WorkerStateEvent t) {
List<File> copied = copyTask.getValue();
uploadTxt.textProperty().unbind();
uploadTxt.setText("Copied: " + copied.size());
}
});
copyFile.addEventHandler(WorkerStateEvent.WORKER_STATE_SUCCEEDED, //
new EventHandler<WorkerStateEvent>() {
@Override
public void handle(WorkerStateEvent t) {
File copied = copyFile.getValue();
sizeTXT.textProperty().unbind();
sizeTXT.setText("Copied: " + copied.getAbsolutePath());
}
});
// Start the Task.
parent= new Thread(copyTask);
parent.start();
}
Task<List<File>> copyTask = new Task<List<File>>() {
@Override
protected List<File> call() throws Exception {
File dir = new File("F:");
File[] files = dir.listFiles();
int count = files.length;
List<File> copied = new ArrayList<File>();
int i = 0;
for (File file : files) {
if (file.isFile()) {
this.copy(file);
copied.add(file);
}
i++;
this.updateProgress(i, count);
}
return copied;
}
private void copy(File file) throws Exception {
this.updateMessage("Copying: " + file.getAbsolutePath());
f = file;
child=new Thread(copyFile);
child.start();
this.wait();
}
};
Task<File> copyFile = new Task<File>() {
@Override
protected File call() throws Exception {
InputStream is = null;
OutputStream os = null;
File dest=null;
String name=f.getName();
dest=new File("D:\\OUTPUT\\"+name);
is = new FileInputStream(f);
os = new FileOutputStream(dest);
byte[] buffer = new byte[1024];
int length;
double i=0.0;
double l=f.length();
while ((length = is.read(buffer)) > 0) {
i+=length;
this.updateMessage("Copying: " + i +" bytes of " + l);
os.write(buffer, 0, length);
this.updateProgress(i, l);
Thread.sleep(500);
}
is.close();
os.close();
this.notifyAll();
return dest;
}
};
}
新守则：
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.util.ResourceBundle;
import java.util.concurrent.CyclicBarrier;
import javafx.beans.property.SimpleDoubleProperty;
import javafx.beans.property.SimpleStringProperty;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Label;
import javafx.scene.control.ProgressBar;
import javafx.scene.control.ProgressIndicator;
import javafx.scene.control.TextArea;
/**
* FXML Controller class
*
* @author ANIL
*/
public class ProgressIndicateController implements Initializable {
@FXML
private ProgressIndicator uploadIndicator;
@FXML
private ProgressBar uploadBar;
@FXML
private TextArea errTxt;
@FXML
private Label uploadTxt;
@FXML
private Label sizeTXT;
CyclicBarrier cb = new CyclicBarrier(2);
final SimpleDoubleProperty prog1 = new SimpleDoubleProperty(0);
final SimpleDoubleProperty prog2 = new SimpleDoubleProperty(0);
final SimpleStringProperty text1 = new SimpleStringProperty("");
final SimpleStringProperty text2 = new SimpleStringProperty("");
final SimpleStringProperty err = new SimpleStringProperty("");
/**
* Initializes the controller class.
*/
@Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
// Unbind progress property
uploadBar.progressProperty().unbind();
// Bind progress property
uploadBar.progressProperty().bind(prog2);
// Hủy bỏ kết nối thuộc tính progress
uploadIndicator.progressProperty().unbind();
// Bind progress property.
uploadIndicator.progressProperty().bind(prog1);
// Unbind text property for Label.
uploadTxt.textProperty().unbind();
// Bind the text property of Label
// with message property of Task
uploadTxt.textProperty().bind(text1);
// Unbind text property for Label.
sizeTXT.textProperty().unbind();
// Bind the text property of Label
// with message property of Task
sizeTXT.textProperty().bind(text2);
//When completed tasks
errTxt.textProperty().unbind();
errTxt.textProperty().bind(err);
// Start the Task.
new Thread() {
@Override
public void run() {
File dir = new File("F:");
File[] files = dir.listFiles();
int count = files.length;
int i = 0;
for (File file : files) {
if (file.isFile()) {
try {
text1.setValue("Copying: " + file.getAbsolutePath());
InputStream is = null;
OutputStream os = null;
File dest = null;
String name = file.getName();
dest = new File("D:\\OUTPUT\\" + name);
is = new FileInputStream(file);
os = new FileOutputStream(dest);
byte[] buffer = new byte[1024];
int length;
double j = 0.0;
double l = file.length();
while ((length = is.read(buffer)) > 0) {
j += length;
text2.setValue("Copying: " + j + " bytes of " + l);
os.write(buffer, 0, length);
prog2.setValue(j / l);
Thread.sleep(100);
}
is.close();
os.close();
} catch (Exception ex) {
err.setValue(ex.toString());
}
i++;
prog1.setValue(i / count);
}
}
}
}.start();
}
}