IDEMPIERE-1083 Print shipping label applet is not working

org.adempiere.ui.zk/WEB-INF/src/PrintLabelApplet.java

@@ -0,0 +1,120 @@
+import java.awt.print.PrinterJob;
+import java.io.BufferedInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.InputStream;
+import java.net.URL;
+import java.net.URLConnection;
+import java.util.ArrayList;
+
+import javax.print.Doc;
+import javax.print.DocFlavor;
+import javax.print.DocPrintJob;
+import javax.print.PrintService;
+import javax.print.SimpleDoc;
+import javax.print.attribute.HashDocAttributeSet;
+import javax.print.attribute.standard.DocumentName;
+import javax.swing.JApplet;
+
+/**
+ * 
+ * @author Low Heng Sin
+ *
+ */
+public class PrintLabelApplet extends JApplet {
+
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = -3107445661561669767L;
+	private ArrayList<String> filepaths = new ArrayList<String>();
+	private int listSize = 0;
+
+	@Override
+	public void init() {
+		String s = getParameter("size");
+		try {
+			listSize = Integer.parseInt(s);
+		} catch (Exception e) {
+			System.out.println("Invalid listSize param=" + s);
+			listSize = 0;
+		}
+		
+		for (int i = 0; i < listSize; i++)
+			filepaths.add(getParameter("file_" + i));
+        
+		super.init();
+	}
+
+	@Override
+	public void start() {
+		System.out.println(this.getClass().getName() + " start()");				
+		PrinterJob pjob = null;
+		PrintService service = null;							
+		DocFlavor flavor = DocFlavor.BYTE_ARRAY.AUTOSENSE;
+		
+		try {
+			int count = 0;
+						
+			while (true) {
+				URL url = new URL(getCodeBase(), "labeldata.jsp?filepath=" + filepaths.get(count) + "&count=" + (count + 1));
+				System.out.println("Protocol="+url.getProtocol());
+				System.out.println("Host="+url.getHost());
+				System.out.println("Port="+url.getPort());
+				System.out.println("Default Port="+url.getDefaultPort());
+				System.out.println("Path"+url.getPath());
+				System.out.println("URL="+url.toString());
+				URLConnection conn = url.openConnection();
+				int contentLength = conn.getContentLength();
+				System.out.println("ContentLength="+contentLength);
+				InputStream is = conn.getInputStream();
+				System.out.println("InputStream="+is.available());
+				byte[] data = null;
+				BufferedInputStream bis = new BufferedInputStream(is);
+				System.out.println("BufferedInputStream="+bis.available());
+				ByteArrayOutputStream baos = new ByteArrayOutputStream();
+				while(bis.available() > 0) {
+					baos.write(bis.read());
+				}
+				is.close();
+				bis.close();
+				data = baos.toByteArray();
+				baos.close();
+				System.out.println("ByteArrayOutputStream="+data.length);
+				if (data.length > 0) {						
+					count ++;
+					if (pjob == null) {
+						// Create Print Job
+						pjob = PrinterJob.getPrinterJob();
+						if (pjob.printDialog()) 
+							service = pjob.getPrintService();
+						else
+							break;
+					}
+					DocPrintJob job = service.createPrintJob();
+					HashDocAttributeSet as = new HashDocAttributeSet();
+					as.add(new DocumentName("shipping label", null));
+					Doc doc = new SimpleDoc(data, flavor, as);
+					job.print(doc, null);
+				} else {
+					break;
+				}		
+				if (count >= listSize)
+					break;
+			}	
+			this.showStatus(count + " label printed.");
+		} catch (Exception e) {
+			e.printStackTrace();
+			this.showStatus("Failed to print label - " + e.getLocalizedMessage());
+		}
+	}
+
+	@Override
+	public void destroy() {
+		System.out.println(this.getClass().getName() + " destroy()");
+	}
+
+	@Override
+	public void stop() {
+		System.out.println(this.getClass().getName() + " stop()");
+	}
+}

org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/LabelAppletWindow.java

@@ -13,20 +13,16 @@
  *****************************************************************************/
 package org.adempiere.webui;
 
+import java.io.File;
+import java.io.FileOutputStream;
 import java.util.List;
-import java.util.UUID;
-
-import javax.servlet.http.HttpSession;
 
 import org.adempiere.webui.component.ToolBarButton;
 import org.adempiere.webui.component.Window;
-import org.apache.commons.codec.binary.Base64;
-import org.zkoss.zk.au.out.AuScript;
-import org.zkoss.zk.ui.Executions;
 import org.zkoss.zk.ui.event.Event;
 import org.zkoss.zk.ui.event.EventListener;
 import org.zkoss.zk.ui.event.Events;
-import org.zkoss.zk.ui.util.Clients;
+import org.zkoss.zul.Applet;
 import org.zkoss.zul.Div;
 
 /**
@@ -44,31 +40,41 @@ public class LabelAppletWindow extends Window implements EventListener<Event>
 	public LabelAppletWindow(List<byte[]> list) 
 	{
 		super();
-		String uuid = UUID.randomUUID().toString();
+		
-		HttpSession session = (HttpSession) Executions.getCurrent().getDesktop().getSession().getNativeSession();
-		session.setAttribute(uuid, list);
 		Div div = new Div();
 		appendChild(div);
 		
+		Applet applet = new Applet();
+		applet.setCode("PrintLabelApplet.class");
+		applet.setArchive("labelapplet.jar");
+		applet.setWidth("0");
+		applet.setHeight("0");
+		applet.setParam("size", list.size() + "");
+
+		File tempFile = null;
+		FileOutputStream fos = null;
+		for(int i = 0; i < list.size(); i++)
+		{
+			try
+			{
+				tempFile = File.createTempFile("lblapp", Long.toString(System.nanoTime()));
+				fos = new FileOutputStream(tempFile);
+				applet.setParam("file_" + i, tempFile.getAbsolutePath());
+				fos.write(list.get(i));
+				fos.close();
+			} catch (Exception e) {
+				e.printStackTrace();
+			}
+		}
+		
+		div.appendChild(applet);
+		
 		ToolBarButton link = new ToolBarButton();
 		link.setLabel("Click here to close this popup after printing is completed.");
 		link.addEventListener(Events.ON_CLICK, this);
 		appendChild(link);
 		
 		this.setBorder("normal");		
-		
-		StringBuffer appletTag = new StringBuffer();
-		appletTag.append("<applet code='PrintLabelApplet.class' archive='labelapplet.jar' width=0 height=0>");
-		appletTag.append("<param name='key' value='" + uuid + "'>");
-		appletTag.append("<param name='size' value='" + list.size() + "'>");
-		
-		for(int i = 0; i < list.size(); i++)
-			appletTag.append("<param name='data_" + i + "' value='" + Base64.encodeBase64(list.get(i)) + "'>");
-		
-		appletTag.append("</applet>");
-		
-		String script = "document.getElementById('" + div.getUuid() + "').innerHTML=\"" + appletTag.toString() + "\";";
-		Clients.response(new AuScript(div, script));		
 	}
 	
 	public void onEvent(Event event) throws Exception 

org.adempiere.ui.zk/build-labelapplet.xml

@@ -0,0 +1,25 @@
+<project name="labelapplet" basedir="." default="sign">
+	<target name="build">
+		<mkdir dir="bin"/>
+		<javac srcdir="WEB-INF/src" 
+			destdir="bin" 
+	        debug="on"
+			listfiles="yes"
+			excludes="**/fi/**, **/metainfo/**, **/org/**, **/web/**"/>
+	</target>
+	
+	<target name="jar" depends="build">
+		<jar destfile="labelapplet.jar" basedir="bin">
+			<manifest>
+				<attribute name="Built-By" value="Trek Global"/>
+			</manifest>
+		</jar>
+	</target>	
+	
+	<target name="sign" depends="jar">
+		<signjar alias="labelapplet" 
+			storepass="labelapplet" 
+			jar="labelapplet.jar" 
+			keystore="labelappletkeystore"/>
+	</target>	
+</project>

org.adempiere.ui.zk/labeldata.jsp

@@ -1,29 +1,52 @@
+<%@ page trimDirectiveWhitespaces="true" %>
+<%@page import="java.io.ByteArrayOutputStream"%>
+<%@page import="java.io.FileInputStream"%>
+<%@page import="java.io.File"%>
 <%@page import="java.io.BufferedOutputStream"%>
 <%@page import="java.io.OutputStream"%>
 <%@ page language="java" contentType="application/octet-stream"%>
 <%
-	String key = request.getParameter("key");
+	String filepath = request.getParameter("filepath");
-	if (key == null || key.trim().length() == 0 )
+	if (filepath == null || filepath.trim().length() == 0 )
 		return;
 	
-	Object object = session.getAttribute(key);
+	File file = new File(filepath);
-	if (object != null && object instanceof java.util.List) {
+	if (file.exists()) 
-		java.util.List list = (java.util.List)object;
+	{	
-		System.out.println("size=" + list.size());
+		FileInputStream fis = null;
-		if (!list.isEmpty()) {
+		ByteArrayOutputStream baos = null;
-			byte[] data = (byte[])list.remove(0);
+		byte[] data = null;
-			System.out.println("length=" + data.length);
+		try
+		{
+			fis = new FileInputStream (file);
+			baos = new ByteArrayOutputStream();
+			byte[] buffer = new byte[1024*8];   //  8kB
+			int length = -1;
+			while ((length = fis.read(buffer)) != -1)
+				baos.write(buffer, 0, length);			
+			data = baos.toByteArray();
+			fis.close();
+			baos.close();
+			
 			response.setContentLength(data.length);
 			
 			OutputStream os = response.getOutputStream();
 			BufferedOutputStream bos = new BufferedOutputStream(os);
 			bos.write(data);
 			bos.flush();
-		} else {
+			bos.close();
+			
+			file.delete();
+		}
+		catch (Exception e)
+		{
+			e.printStackTrace();
 			response.setContentLength(0);
 		}
-	} else {
+	}
-		System.out.println("key not found=" + key);
+	else 
+	{
+		System.out.println("file not found=" + filepath);
 		response.setContentLength(0);
 	}
 %>