我使用swingworkers来提取zipfile,并将提取的prosecc附加到GUI中的textArea。它只从压缩文件中提取一个项目,并且没有在textArea中显示任何内容。
任何人都可以建议任何解决方案吗?
public class UnzipWorkers extends SwingWorker<String,Void> {
private WebTextArea statusTextArea;
private File archive,outputDir;
public UnzipWorkers(WebTextArea statusTextArea,File archive,File outputDir) {
this.archive=archive;
this.outputDir=outputDir;
this.statusTextArea = statusTextArea;
}
@Override
protected String doInBackground() throws Exception {
statusTextArea.append(String.valueOf(System.currentTimeMillis()));
try {
ZipFile zipfile = new ZipFile(archive);
for (Enumeration e = zipfile.entries(); e.hasMoreElements(); ) {
ZipEntry entry = (ZipEntry) e.nextElement();
unzipEntry(zipfile, entry, outputDir);
}
} catch (Exception e) {
OeExceptionDialog.show(e);
}
return "Extracted successfully: " + archive.getName() + "\n";
}
@Override
protected void done() {
super.done();
try {
statusTextArea.append( get());
FileTreePanel.btnRefresh.doClick();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
}
private String unzipEntry(ZipFile zipfile, final ZipEntry entry, File outputDir) {
String success = "Extracted failed: "+ entry + "\n";
if (entry.isDirectory()) {
createDir(new File(outputDir, entry.getName()));
}
File outputFile = new File(outputDir, entry.getName());
if (!outputFile.getParentFile().exists()){
createDir(outputFile.getParentFile());
}
try {
BufferedInputStream inputStream = new BufferedInputStream(zipfile.getInputStream(entry));
BufferedOutputStream outputStream = new BufferedOutputStream(new FileOutputStream(outputFile));
IOUtils.copy(inputStream, outputStream);
outputStream.close();
inputStream.close();
success="Extracted successfully: " + entry + "\n";
}catch (IOException io){
OeExceptionDialog.show(io);
}catch (NullPointerException n){
OeExceptionDialog.show(n);
}catch (ArithmeticException a){
OeExceptionDialog.show(a);
}
return success;
}
private void createDir(File dir) {
if (!dir.exists()) {
try {
dir.mkdirs();
} catch (RuntimeException re) {
OeExceptionDialog.show(re);
}
}
}
}
答案 0 :(得分:5)
SwingWorker
未指定以这种方式工作,对于来自doInBackground()
的定期输出,有方法process()
和publish()
,您可以
1)使用Runnable#Thread
代替SwingWorker
,然后您通过添加JTextArea.append()
进行编码,并将其包含在invokeLater()
2)将process()
或publish()
添加到SwingWorker
,在此方法中添加IOStream
并定期附加到JTextArea