Java tutorial
/******************************************************************************* * Copyright (c) 2014 hangum. * All rights reserved. This program and the accompanying materials * are made available under the terms of the GNU Lesser Public License v2.1 * which accompanies this distribution, and is available at * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html * * Contributors: * hangum - initial API and implementation ******************************************************************************/ package com.hangum.tadpole.commons.dialogs.fileupload; import java.io.File; import org.apache.commons.io.ByteOrderMark; import org.apache.commons.io.FileUtils; import org.apache.commons.io.input.BOMInputStream; import org.apache.log4j.Logger; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.rap.fileupload.DiskFileUploadReceiver; import org.eclipse.rap.fileupload.FileDetails; import org.eclipse.rap.fileupload.FileUploadEvent; import org.eclipse.rap.fileupload.FileUploadHandler; import org.eclipse.rap.fileupload.FileUploadListener; import org.eclipse.rap.rwt.service.ServerPushSession; import org.eclipse.rap.rwt.widgets.FileUpload; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; import com.hangum.tadpole.commons.Messages; import com.hangum.tadpole.commons.util.GlobalImageUtils; /** * SQL to db import dialog * * @author hangum * */ public class SingleFileuploadDialog extends Dialog { private static final Logger logger = Logger.getLogger(SingleFileuploadDialog.class); private String strTitle = ""; //$NON-NLS-1$ private static final String INITIAL_TEXT = "No files uploaded."; //$NON-NLS-1$ // file upload private FileUpload fileUpload; private DiskFileUploadReceiver receiver; private ServerPushSession pushSession; private Text fileNameLabel; /** * Create the dialog. * @param parentShell */ public SingleFileuploadDialog(Shell parentShell, String strTitle) { super(parentShell); setShellStyle(SWT.MAX | SWT.RESIZE | SWT.TITLE); this.strTitle = strTitle; } @Override protected void configureShell(Shell newShell) { super.configureShell(newShell); newShell.setText(strTitle); newShell.setImage(GlobalImageUtils.getTadpoleIcon()); } /** * Create contents of the dialog. * @param parent */ @Override protected Control createDialogArea(Composite parent) { Composite container = (Composite) super.createDialogArea(parent); GridLayout gridLayout = (GridLayout) container.getLayout(); gridLayout.verticalSpacing = 5; gridLayout.horizontalSpacing = 5; gridLayout.marginHeight = 5; gridLayout.marginWidth = 5; Composite compositeHead = new Composite(container, SWT.NONE); compositeHead.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1)); compositeHead.setLayout(new GridLayout(3, false)); Label lblFileName = new Label(compositeHead, SWT.NONE); lblFileName.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1)); lblFileName.setText(Messages.get().SingleFileuploadDialog_1); fileNameLabel = new Text(compositeHead, SWT.BORDER); fileNameLabel.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1)); fileNameLabel.setEditable(false); final String url = startUploadReceiver(); pushSession = new ServerPushSession(); /* fileUpload ? ??? */ /* Label lblDumy = new Label(compositeHead, SWT.NONE); lblDumy.setText(Messages.get().CsvToRDBImportDialog_2); lblDumy.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false)); */ fileUpload = new FileUpload(compositeHead, SWT.NONE); fileUpload.setText(Messages.get().FileUploadDialog_fileSelect); fileUpload.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false)); fileUpload.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { String fileName = fileUpload.getFileName(); if ("".equals(fileName) || null == fileName) //$NON-NLS-1$ return; // if(!MessageDialog.openConfirm(null, Messages.get().Confirm, "Do you want file upload?")) return; fileNameLabel.setText(fileName == null ? "" : fileName); //$NON-NLS-1$ pushSession.start(); fileUpload.submit(url); } }); return container; } @Override protected void okPressed() { try { if (!insert()) return; } catch (Exception e) { MessageDialog.openError(null, Messages.get().Error, e.getMessage()); return; } super.okPressed(); } public String getStrTxtFile() { return strTxtFile; } String strTxtFile = ""; //$NON-NLS-1$ private boolean insert() throws Exception { BOMInputStream bomInputStream; File[] arryFiles = receiver.getTargetFiles(); if (arryFiles.length == 0) { throw new Exception(Messages.get().SingleFileuploadDialog_5); } File userUploadFile = arryFiles[arryFiles.length - 1]; try { // bom? charset? ? ?. bomInputStream = new BOMInputStream(FileUtils.openInputStream(FileUtils.getFile(userUploadFile))); ByteOrderMark bom = bomInputStream.getBOM(); String charsetName = bom == null ? "CP949" : bom.getCharsetName(); //$NON-NLS-1$ strTxtFile = FileUtils.readFileToString(userUploadFile, charsetName); if (bom != null) { // ByteOrderMark.UTF_8.equals(strTxtFile.getBytes()[0]); //??? ?? BOM? . strTxtFile = strTxtFile.substring(1); } } catch (Exception e) { logger.error("file read error", e); //$NON-NLS-1$ throw new Exception(Messages.get().SingleFileuploadDialog_7 + e.getMessage()); } return true; } /** * ? * * @return */ private String startUploadReceiver() { receiver = new DiskFileUploadReceiver(); final FileUploadHandler uploadHandler = new FileUploadHandler(receiver); uploadHandler.addUploadListener(new FileUploadListener() { public void uploadProgress(FileUploadEvent event) { } public void uploadFailed(FileUploadEvent event) { addToLog("upload failed: " + event.getException()); //$NON-NLS-1$ } public void uploadFinished(FileUploadEvent event) { for (FileDetails file : event.getFileDetails()) { addToLog("uploaded : " + file.getFileName()); //$NON-NLS-1$ } } }); return uploadHandler.getUploadUrl(); } private void addToLog(final String message) { if (!fileNameLabel.isDisposed()) { fileNameLabel.getDisplay().asyncExec(new Runnable() { public void run() { String text = fileNameLabel.getText(); if (INITIAL_TEXT.equals(text)) { text = ""; //$NON-NLS-1$ } fileNameLabel.setText(message); pushSession.stop(); } }); } } /** * Create contents of the button bar. * @param parent */ @Override protected void createButtonsForButtonBar(Composite parent) { createButton(parent, IDialogConstants.OK_ID, Messages.get().Confirm, false); createButton(parent, IDialogConstants.CANCEL_ID, Messages.get().Cancle, false); } /** * Return the initial size of the dialog. */ @Override protected Point getInitialSize() { return new Point(450, 130); } }