Problem to read an external file in a web application

Hello everybody.
I'd like to know a method for reading a file (how I may connect to it?) This file is in a directory is in an external computer. I don't want to use a client/server application. I think that I must to use JNDI but I'm not sure. I think so becouse when I connect my application to external LDAP server, I use JNDI.
I'm using Tomcat.
Thanks a lot.
Sorry for my English.
I hope in your solution.
Alessandro from Italy

A quick Google found this:
try
Runtime rt = Runtime.getRuntime() ;
Process p = rt.exec("Program.exe") ;
InputStream in = p.getInputStream() ;
OutputStream out = p.getOutputStream ();
InputSream err = p,getErrorStram() ;
//do whatever you want
//some more code
p.destroy() ;
}catch(Exception exc){/*handle exception*/}Then of course you should realize that the path to the exe file must be in relation to the server.

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import java.io.*;
import java.util.regex.*;
import java.util.*;
import java.text.*;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFCell;
class Writing {
public static void main(String args[]) throws Exception {
          FileOutputStream fileOut = new FileOutputStream("ServerResult.xls"); //my output file
          int counter = 1;
          File dir = new File("C:/Perform/ServerLogs");
          String[] children = dir.list();
          if( children == null)
               System.out.println("The Directory mentioned does not exist");
          else {
               for (int fileNo = 0; fileNo < children.length; fileNo++ ) {        //Files iteration starts
                    String filename = children[fileNo];
          File logFile = new File(filename);
FileReader logFileReader = new FileReader(logFile);
BufferedReader logReader = new BufferedReader(logFileReader);
StringBuffer sBuf = new StringBuffer(5000);
          HSSFWorkbook wb = new HSSFWorkbook();
          HSSFSheet sheet = wb.createSheet();
          HSSFRow rowTitle;
          HSSFRow rowReq;
          HSSFRow rowRes;
String aLine = null;
boolean skip = false;
boolean readed = false;
boolean initReq = false;
          boolean flag = false;
long requestTime = 0;
long responseTime = 0;
long recdTime = 0;
long sentTime = 0;
          long hasTime = 0;
          long presentTime = 0;
          int hasCalls = 0;
Pattern startMessage = Pattern.compile("^<MESSAGE.*ID=\".*_"+args[0]+"\".*", Pattern.DOTALL);
Pattern requestMessage = Pattern.compile("^<MESSAGE.*TS=\"(.*)\" CATEGORY=\"RequestMsg.\".*ID=\".*_"+args[0]+"\".*<ActName>(.*)</ActName>.*", Pattern.DOTALL);
Pattern requestMessage1 = Pattern.compile("^<MESSAGE.*TS=\"(.*)\" CATEGORY=\"RequestMsg.\".*ID=\".*_"+args[0]+"\".*<Svc id=\"(.*)\">.*", Pattern.DOTALL);
Pattern responseMessage = Pattern.compile("^<MESSAGE.*TS=\"(.*)\" CATEGORY=\"ResponseMsg\".*ID=\".*_"+args[0]+"\".*", Pattern.DOTALL);
Pattern initMessage = Pattern.compile("^<MESSAGE.*TS=\"(.*)\" CATEGORY=\"HostConnInit\".*ID=\".*_"+args[0]+"\".*", Pattern.DOTALL);
Pattern initResMessage = Pattern.compile("^<MESSAGE.*TS=\"(.*)\" CATEGORY=\"ResponseMsg\".*ID=\"null\".*", Pattern.DOTALL);
Pattern initResIDMessage = Pattern.compile("^<MESSAGE.*TS=\"(.*)\" CATEGORY=\"ResponseMsg\".*ID=\"null\".*<IATA>"+args[0]+"</IATA>.*", Pattern.DOTALL);
          Pattern sentMessage = Pattern.compile("^<MESSAGE.*TS=\"(.*)\" CATEGORY=\"DCMsgSentInfo\".*ID=\".*_"+args[0]+"\".*", Pattern.DOTALL);
          Pattern rcvdMessage = Pattern.compile("^<MESSAGE.*TS=\"(.*)\" CATEGORY=\"DCMsgRcvdInfo\".*ID=\".*_"+args[0]+"\".*", Pattern.DOTALL);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
DecimalFormat dcf = new DecimalFormat("########.##");
String actName = "";
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          rowTitle.createCell((short)1).setCellType(HSSFCell.CELL_TYPE_STRING);
          rowTitle.createCell((short)1).setCellValue("Action");
          rowTitle.createCell((short)2).setCellType(HSSFCell.CELL_TYPE_STRING);
          rowTitle.createCell((short)2).setCellValue("Server Time(in ms)");
          rowTitle.createCell((short)3).setCellType(HSSFCell.CELL_TYPE_STRING);
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          rowTitle.createCell((short)4).setCellType(HSSFCell.CELL_TYPE_STRING);
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          rowTitle.createCell((short)5).setCellType(HSSFCell.CELL_TYPE_STRING);
          rowTitle.createCell((short)5).setCellValue("No. of HAS calls");
          rowTitle.createCell((short)6).setCellType(HSSFCell.CELL_TYPE_STRING);
          rowTitle.createCell((short)6).setCellValue("Data Size");
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while((aLine=logReader.readLine()) != null) {
if(aLine.startsWith("<MESSAGE TYPE=\"EVENT\"")) {
Matcher m = startMessage.matcher(aLine);
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sBuf.setLength(0);
sBuf.append(aLine);
skip = false;
initReq = false;
m = initMessage.matcher(aLine);
if(m.find()) {
initReq = true;
} else {
if(initReq) {
m = initResMessage.matcher(aLine);
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sBuf.setLength(0);
sBuf.append(aLine);
skip = false;
} else if(aLine.startsWith("</MESSAGE>")) {
if(!skip) {
sBuf.append(aLine);
readed = true;
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sBuf.append(aLine);
if(!skip && readed) {
String tempStr = sBuf.toString();
if(tempStr.length() > 0) {
boolean reqMatched = false;
Matcher m = null;
if(initReq) {
m = initMessage.matcher(tempStr);
actName = "Intialization";
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m = requestMessage.matcher(tempStr);
String time = "";
if(m.find()) {
reqMatched = true;
for (int i=1; i<=m.groupCount(); i++) {
String groupStr = m.group(i);
if(i == 1) {
time = groupStr;
} else if(i == 2) {
actName = groupStr;
} else if(!initReq){
m = requestMessage1.matcher(tempStr);
if(m.find()) {
reqMatched = true;
for (int i=1; i<=m.groupCount(); i++) {
String groupStr = m.group(i);
if(i == 1) {
time = groupStr;
} else if(i == 2) {
actName = groupStr;
if(time.length() > 0 ) {
try{
requestTime = sdf.parse(time).getTime();
}catch(Exception ex){}
System.out.println("Request,"+actName+","+time+",,,,"+dcf.format(((double)time.length()/1024.0))+"K");
                              //bw.write("Request,"+actName+","+time+",,,,"+dcf.format(((double)time.length()/1024.0))+"K");
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                                   rowReq.createCell((short)0).setCellType(HSSFCell.CELL_TYPE_STRING);
                                   rowReq.createCell((short)0).setCellValue("Request");
                                   rowReq.createCell((short)1).setCellType(HSSFCell.CELL_TYPE_STRING);
                                   rowReq.createCell((short)1).setCellValue(actName);
                                   rowReq.createCell((short)2).setCellType(HSSFCell.CELL_TYPE_STRING);
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                                   rowReq.createCell((short)3).setCellType(HSSFCell.CELL_TYPE_STRING);
                                   rowReq.createCell((short)3).setCellValue("");
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                                   rowReq.createCell((short)4).setCellValue("");
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                                   rowReq.createCell((short)5).setCellValue("");
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               if(l.find()) {
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     String groupStr2 = l.group(i);
try{
sentTime = sdf.parse(groupStr2).getTime();
}catch(Exception ex){}
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recdTime = sdf.parse(groupStr1).getTime();
}catch(Exception ex){}
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if(!reqMatched) {
if(initReq) {
m=initResIDMessage.matcher(tempStr);
} else {
m=responseMessage.matcher(tempStr);
if(m.find()) {
for (int i=1; i<=m.groupCount(); i++) {
String groupStr = m.group(i);
try{
responseTime = sdf.parse(groupStr).getTime();
}catch(Exception ex){}
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                                             rowRes.createCell((short)1).setCellValue(actName);
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                                             rowRes.createCell((short)2).setCellValue(groupStr);
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                                             rowRes.createCell((short)6).setCellValue(resDataSize);
                                             hasTime = 0;
                                             hasCalls = 0;
                                             counter = counter + 1 ;
sBuf.setLength(0);
readed = false;
          wb.write(fileOut);
          } // End of for (int fileNo = 0; fileNo < children.length; fileNo++ )
}     //End of else
          fileOut.close();
} //End of public static void main
} // End of Class

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