Anutosh Swamy

Let me make it more specific

I have a list object set in the request as an attribute which contains all the details about the users of an application, in JSP am displaying the list of the users using <logic:present>, <logic:iterate> and <bean:write> this is working fine but the problem is there when I have to apply some if() condition, for this I have to make use of the <bean:write> value inside the scriptlet.

For example :

what i need inside JSP is

<% System.out.println(<bean: write name="userList" property="userName"/> %>

that's all

but this is giving me this error - illegal start of expression
org.apache.jasper.JasperException: Unable to compile class for JSP

So what will be the possible solution for this.

Can anyone help me with using the <bean:write/> value inside the scriptlet in JSP

Thanks in advance

Hi Ranchers,

I cleared the IBM Certified Solution Developer for XML 1.1 and Related Technologies with 92%.

for preparation I studied

1) XML in a Nutshell

2) Professional XML 2nd Edition

3) XSLT by O'Reily (this is a must as the major portion of the test is covered by this only)

4) W3Schools XML tutorials and

5) http://www.zvon.org/

Hi Rob,

and the email asking me to apply for my SCEA came in two days later.

for SCEA, SCJP or SCWCD is not a pre-requisite

or

is it?

Dear Krishna,

We can forward a request either by using the RequestDispatcher() of ServletContext interface or the ServletRequest interface, the point when to use ServletContext or ServletRequest is that the ServletRequest looks for the resources in the same context (same webapp) to which the invoking servlet belongs.

Moreover the pathname used in the RequestDispatcher() of ServletContext must begin with a "/" which is an absolute path.

The pathname used in the RequestDispatcher() of ServletRequest interface can be an absolute path or a relative path means it can start with “/” or “../..”.

Hi Krishnan,

It seems that you want to read the contents of an XML file and display the text of each element.

If this is the case than follw this steps:

Step I : Download dom4j.jar and place this into the classpath.

Step II : Suppose the XML file is testing.xml in the test folder of your C drive.
testing.xml
<person> <name>Anutosh</name> <designation>S/W Engineer</designation> <location>India</location> <mobile>121212121</mobile> </person>

Step III: The Code snippet for ReadXml.java
ArrayList parentList = new ArrayList(); File file = new FIle("C:\\test\\testing.xml"); SAXReader xmlReader = new SAXReader(); try{ Document doc = xmlReader.read(file); Element parentElement = doc.getRootElement(); if(parentElement.nodeCount()>0){ parentList=(ArrayList)parentElement.elements(); Element[] arrElem = new Element[parentList.size()] ; for(int i = 0;i<parentList.size();i++){ arrElem[i] = (Element)parentList.get(i); System.out.println(arrElem[i].node(0).getText()+" | "arrElem[i].node(1).getText()+" | "arrElem[i].node(2).getText()+" | "arrElem[i].node(3).getText()); } } }catch (MalformedURLException ex) { ex.printStackTrace(); } catch (DocumentException ex) { ex.printStackTrace(); }

Hope this will solve your problem.

Hi All,

I am getting an exception of

java.lang.IndexOutOfBoundsException
java.io.FileOutputStream.writeBytes(Native Method)
java.io.FileOutputStream.write(FileOutputStream.java:260)
com.aem.upload.ZipFileUploadServlet.processRequest(ZipFileUploadServlet.java:91)
com.aem.upload.ZipFileUploadServlet.doPost(ZipFileUploadServlet.java:115)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368)

when I try uploading a ZIP file through my application running on Linux OS but the same is running fine on Windows OS (without any exception and uploading perfectly) kindly let me know where the code is wrong or I need to make some changes accordingly while making this run perfectly on Linux OS

Here's my Servlet code for uploading the Zip file:

ZipFileUploadServlet.java
public class ZipFileUploadServlet extends HttpServlet { /** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods. * @param request servlet request * @param response servlet response */ protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("ZIPFILESERVLET"); // String ocswPath = Constant.OCSW_FILES_PATH; // String tlsPath = Constant.TLS_CERT_PATH; // String filePath="C:\\tftpboot\\ocswtest\\"; String filePath="/tftpboot/ocsw/"; String contentType = request.getContentType(); if ((contentType != null) && (contentType.indexOf("multipart/form-data") >= 0)) { System.out.println("Inside IF"); System.out.println("CONTENT TYPE :: "+contentType); int lastIndex = contentType.lastIndexOf("="); String boundary = contentType.substring(lastIndex + 1, contentType.length()); System.out.println("BOUNDARY :: "+boundary); DataInputStream in = new DataInputStream(request.getInputStream()); int formDataLength = request.getContentLength(); System.out.println("FORMDATALENGTH :: "+formDataLength); byte dataBytes[] = new byte[formDataLength]; int byteRead = 0; int totalBytesRead = 0; while (totalBytesRead < formDataLength) { byteRead = in.read(dataBytes, totalBytesRead, formDataLength); totalBytesRead += byteRead; } System.out.println("TOTAL BYTE READ :: "+totalBytesRead); String file = new String(dataBytes); System.out.println(file); String fileType=file.substring(file.indexOf("name=\"")+6); fileType=fileType.substring(fileType.indexOf("\n"),fileType.indexOf(boundary)-2); fileType=fileType.trim(); System.out.println("FILETYPE :: "+fileType.trim()); System.out.println("LENGTH :: "+fileType.length()); String fileName = file.substring(file.indexOf("filename=\"")+10); fileName=fileName.substring(0,fileName.indexOf("\n")); fileName=fileName.substring(fileName.lastIndexOf("\\")+1,fileName.indexOf("\"")); System.out.println("FILENAME :: "+fileName); // if(fileType.equals("ocsw")) // filePath=ocswPath; // else // filePath=tlsPath; int pos; pos = file.indexOf("filename=\""); System.out.println("POS 1 :: "+pos); pos = file.indexOf("\n", pos) + 1; System.out.println("POS 2 :: "+pos); pos = file.indexOf("\n", pos) + 1; System.out.println("POS 3 :: "+pos); pos = file.indexOf("\n", pos) + 1; System.out.println("POS 4 :: "+pos); int boundaryLocation = file.indexOf(boundary, pos) - 4; int startPos = ((file.substring(0, pos)).getBytes()).length; int endPos = ((file.substring(0, boundaryLocation)).getBytes()).length; // int endPos = file.indexOf(boundary, pos)-4; System.out.println("BOUNDARY LOCATION :: "+boundaryLocation); System.out.println("START POS :: "+startPos); System.out.println("END POS :: "+endPos); File newFile = new File(filePath+fileName); if(newFile.exists()) newFile.delete(); System.out.println("FILE TO SAVE WITH PATH :: "+newFile); System.out.println("SIZE OF DATABYTES :: "+dataBytes.length); FileOutputStream fileOut = new FileOutputStream(newFile); fileOut.write(dataBytes, startPos, (endPos - startPos)); fileOut.flush(); fileOut.close(); System.out.println("UPLOAD COMPLETED"); response.sendRedirect("../index.jsp"); } }

index.jsp
<html> <head> <meta http-equiv="Content-Type" content="text/html"> <title>JSP Page</title> </head> <body> <form name="fu" method="post" action="./file/zipupload" enctype="multipart/form-data"> <input type="text" name="fileType" value="ocsw"> <input type="file" name="file1"> <input type="submit" name="submit" value="Upload"> </form> </body> </html>

Thank you in Advance

Hi Ulf,

Can you please show me the way how should I proceed for the same.

That will be a great help for me.

Thanks in advance.

Hi,

Is there any any way we can retrieve the list of mails send using the Javamail API?
As I have to show those sent mails under sent item list.

Hi Campbell Ritchie,

Thanks for correcting my mistake, this will be surly taken care of in future.
[ October 20, 2008: Message edited by: Anutosh Swamy ]

Hope this code will help you to upload any file type to any location
you need to modify the the code according to your project.


public class FileUploadServlet extends HttpServlet { /** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods. * @param request servlet request * @param response servlet response */ protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //response.setContentType("text/html"); //PrintWriter out = response.getWriter(); String uploadDir=""; String nextpage=""; int startPos = 0; int endPos = 0; int count = 0; int pos = 0; int byteRead = 0; int totalBytesRead = 0; String fileData = ""; String s=""; String fileName = "",boundary=""; String backup_dir = Constant.DB_BAK_DIR; String selectDb = request.getParameter("seldb"); request.setAttribute("upload","true"); String contentType = request.getContentType(); int formDataLength = request.getContentLength(); byte[] buf = new byte[formDataLength]; byte[] line = new byte[128]; ServletInputStream in = request.getInputStream(); while (totalBytesRead < formDataLength) { byteRead = in.read(buf, totalBytesRead, formDataLength); totalBytesRead += byteRead; } do{ copyByte(buf, line, count ,1);//read 1 byte at a time count+=1; s = new String(line, 0, 1); fileData = fileData + s; pos = fileData.indexOf("Content-Disposition: form-data; name=\""); //set the file name if(pos != -1) endPos = pos; }while(pos == -1); boundary = fileData.substring(startPos, endPos); startPos = endPos; do{ copyByte(buf, line, count ,1);//read 1 byte at a time count+=1; s = new String(line, 0, 1); fileData = fileData + s; pos = fileData.indexOf("Content-Type: ",startPos); //set the file name if(pos != -1) endPos = pos; }while(pos == -1); selectDb = fileData.substring((fileData.indexOf("\"seldb\"")+11),(fileData.indexOf("\"seldb\"")+16)); selectDb = selectDb.trim(); //startPos = endPos; do{ copyByte(buf, line, count ,1);//read 1 byte at a time count+=1; s = new String(line, 0, 1); fileData = fileData + s; pos = fileData.indexOf("filename=\"", startPos); //set the file name if(pos != -1) startPos = pos; }while(pos == -1); do{ copyByte(buf, line, count ,1);//read 1 byte at a time count+=1; s = new String(line, 0, 1); fileData = fileData + s; pos = fileData.indexOf("Content-Type: ", startPos); if(pos != -1) endPos = pos; }while(pos == -1); fileName = fileData.substring(startPos + 10, endPos - 3); fileName = fileName.substring((fileName.lastIndexOf("\\")+1),fileName.length()); boolean blnNewlnFlag = false; startPos = endPos;//added length of "Content-Type: " do{ copyByte(buf, line, count ,1);//read 1 byte at a time count+=1; s = new String(line, 0, 1); fileData = fileData + s; pos = fileData.indexOf("\n", startPos); if(pos != -1){ if(blnNewlnFlag == true) endPos = pos; else{ blnNewlnFlag = true; pos = -1; } } }while(pos == -1); contentType = fileData.substring(startPos + 14, endPos); //loop for extracting actual file data (any type of file) startPos = count + 1; do{ copyByte(buf, line, count ,1);//read 1 byte at a time count+=1; s = new String(line, 0, 1); fileData = fileData + s; pos = fileData.indexOf(boundary, startPos);//check for end of file data i.e boundry value }while(pos == -1); endPos = count - boundary.length(); if(selectDb!=null && selectDb.equals("tmcs")){ uploadDir = backup_dir+"/tmcs"; request.setAttribute("option","1"); nextpage = "/backup/selectdb.jsp"; } if(selectDb!=null && selectDb.equals("aemvs")){ uploadDir = backup_dir+"/aemvs"; request.setAttribute("option","2"); nextpage = "/backup/selectdb.jsp"; } if(selectDb!=null && selectDb.equals("nms")){ uploadDir = backup_dir+"/nms"; request.setAttribute("option","3"); nextpage = "/backup/selectdb.jsp"; } FileOutputStream fos=null; File f1=new File(uploadDir+"/"+fileName); fos=new FileOutputStream(f1); fos.write(buf, startPos, (endPos - startPos)); fos.flush(); fos.close(); RequestDispatcher rd = request.getRequestDispatcher(nextpage); rd.forward(request, response); } public void copyByte(byte [] fromBytes, byte [] toBytes, int start, int len) { for(int i=start;i<(start+len);i++) { toBytes[i - start] = fromBytes[i]; } } // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code."> /** Handles the HTTP <code>GET</code> method. * @param request servlet request * @param response servlet response */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } /** Handles the HTTP <code>POST</code> method. * @param request servlet request * @param response servlet response */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } /** Returns a short description of the servlet. */ public String getServletInfo() { return "Short description"; } // </editor-fold> }

K.Anutosh
---------------------------------------------------------------------------
SCJP 1.4
SCWCD 1.4
OCA (Paper I)

[edit]Add code tags. CR[/edit]
[ October 13, 2008: Message edited by: Campbell Ritchie ]

Hi,

Can any one help me with directing the log messages in Log4j to their respective logger files.

For example:

I need to direct the INFO level messages to info-logger.log file
WARN level message to warn-logger.log file
ERROR level message to error-logger.log file and so on

and no file will have the messages from different level loggers, means info-logger.log file will have INFO level messages only and not the WARN or ERROR level messages and so on.

NOTE:: I am using only log4j.properties configuration file and not the log4j.xml

Thanks in advance

K.Anutosh
----------------------------------------------------------------
SCJP 1.4
SCWCD 1.4
OCA (Paper I)

Thanks Jair
Thanks Ulf

This will definitely solve my issue.

Hi Jair,

See I'd already opened an URL like this at client side

BufferedReader httpbr=null;
String url = "http://localhost:8080/MyApp/loginClient?uid="+user_name+"&pid="+password;

URL opr1_url=new URL(url);
httpbr = new BufferedReader(new InputStreamReader(opr1_url.openStream()));

And from server side I had generated a respose (success or failure).

If failure I need to send two parameters "failure" and "message for the same"

If success I need to send one paramerter "success".

How sholud I send this from server to client and read the same at client side.