Automatic flushing of response

Hi

I am using JSP code to send an email(SendEmail is class file which extends mail API)

JSP
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<%@ page import="java.sql.*"%>
<%@ page import="java.io.*"%>
<%@ page import="example.*"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>
<head>
<script type="text/javascript">
    function toggle_visibility(id) {
       var e = document.getElementById(id);
       if(e.style.display == 'block')
          e.style.display = 'none';
       else
          e.style.display = 'block';

}
    </script>
    </head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title><link href="reportng.css" rel="stylesheet" type="text/css" ></head>
<body>
<%@include file="MetaData.jsp" %>
<% 
String timestamp = (String)application.getAttribute("ReportDate") + (String)application.getAttribute("ReportTime");
boolean mailsent = false;
/* Create string of connection url within specified format with machine
name, port number and database name. Here machine name id localhost and 
database name is student. */

String connectionURL = (String) application
.getAttribute("DatabaseURL")
+ (String) application.getAttribute("DatabaseName");

// declare a connection by using Connection interface
Connection connection = null;

/* declare object of Statement interface that is used for executing sql 
statements. */
Statement statement = null;

// declare a resultset that uses as a table for output data from tha table.
ResultSet rs = null;

try{
	//Load JBBC driver "com.mysql.jdbc.Driver"
	Class.forName((String) application.getAttribute("DatabaseDriver"))
			.newInstance();

/* Create a connection by using getConnection() method that takes parameters 
	 of string type connection url, user name and password to connect to database.*/
	connection = DriverManager.getConnection(connectionURL,(String) application.getAttribute("DatabaseUsername"),(String) application.getAttribute("DatabasePassword"));
			
}catch(Exception e){
	out.println("We are not able to connect to Database server.Make sure there is no network isssue." +
			"Check if you can connec to database server manually.If yes try again and if it still fails" +
			"consult your development team");
}
try{

/* createStatement() is used for create statement object that is used for 
 sending sql statements to the specified database. */
statement = connection.createStatement();

String buildname = (String)application.getAttribute("BuildNumber");
String arrayForStackTracesTokens[];
String partialclassname[];
String classname ="";
String HTMLCONTENTS = "<html><head> <style =\"text/css\">"+
  "*                        {padding: 0; margin: 0;}"+
"a                        {color: #006699;}"+
"a:visited                {color: #003366;}"+
"body                     {font-family: Lucida Sans Unicode, Lucida Grande, sans-serif; line-height: 1.8em; font-size: 62.5%; margin: 1.8em 1em;}"+
"h1                       {font-family: Arial, Helvetica, sans-serif; font-weight: bold; font-size: 2.7em; margin-bottom: 0.6667em;}"+
"h2                       {font-family: Arial, Helvetica, sans-serif; font-weight: bold; font-size: 1.8em; margin-bottom: 0;}"+
"p                        {font-size: 1.3em;}"+
"td                       {font-size: 1.3em;}"+

".header                  {font-size: 1.4em; font-weight: bold; text-align: left;}"+
".passed                  {background-color: #44aa44;}"+
".skipped                 {background-color: #ffaa00;}"+
".failed                  {background-color: #ff4444;}"+
".failedConfig            {background-color: #800000; color: #ffffff}"+
".skippedConfig           {background-color: #cc6600; color: #ffffff}"+
".totalLabel              {font-weight: bold; background-color: #ffffff;}"+

".suite                   {background-color: #999999; font-weight: bold;}"+
".test                    {background-color: #eeeeee; padding-left: 2em;}"+
".test .passed            {background-color: #88ee88;}"+
".test .skipped           {background-color: #ffff77;}"+
".test .failed            {background-color: #ff8888;}"+
".group                   {background-color: #cccccc; color: #000000; font-weight: bold;}"+
".suiteLinks              {float: right; font-weight: normal; vertical-align: middle;}"+
".suiteLinks a            {color: #ffffff; margin-left: .5em;}"+
".passRate                {font-weight: bold; text-align: right;}"+
".duration                {text-align: right;}"+
".thread                  {white-space: nowrap;}"+

".resultsTable            {border: 0; width: 100%; margin-top: 1.8em; line-height: 1.7em; border-spacing: 0.1em;}"+
".resultsTable .method    {width: 18em;}"+
".resultsTable .duration  {width: 6em;}"+
".resultsTable td         {vertical-align: top; padding: 0 1em;}"+
".resultsTable th         {padding: 0 .5em;}"+
".number                  {text-align: right;}"+
".zero                    {font-weight: normal;}"+
".columnHeadings          {font-size: 1em;}"+
".columnHeadings th       {font-weight: normal;}"+

".configTable             {border: 1px solid #800000; color: #800000; margin-bottom: 1.5em;}"+

"#sidebarHeader           {padding: 1.8em 1em; margin: 0 -1em 1.8em -1em;}"+
"#suites                  {line-height: 1.7em; border-spacing: 0.1em; width: 100%;}"+
".tests                   {display: table-row-group;}"+
".header.suite            {cursor: pointer; clear: right; height: 1.214em; margin-top: 1px;}"+
"div.test                 {margin-top: 0.1em; clear: right; font-size: 1.3em;}"+

/* The +/- toggle used in the navigation frame. */

".successIndicator        {float: right; font-family: monospace; font-weight: bold; padding-right: 2px; color: #44aa44;}"+
".skipIndicator           {float: right; font-family: monospace; font-weight: bold; padding-right: 2px; color: #ffaa00;}"+
".failureIndicator        {float: right; font-family: monospace; font-weight: bold; padding-right: 2px; color: #ff4444;}"+

/* These classes are for information about an individual test result. */
".result                  {font-size: 1.1em; vertical-align: middle;}"+

".testOutput              {font-family: Lucida Console, Monaco, Courier New, monospace; color: #666666;}"+

".description             {border-bottom: 1px dotted #006699;}"+

"#meta                    {font-size: 1em; text-align: right; float: right;}"+
"#systemInfo              {color: #666666;}"+

/* Reporter log output (individual test ouput is style by "testOutput" above). */
"#log                     {font-family: Lucida Console, Monaco, Courier New, monospace; font-size: 1.3em; margin-top: 1.8em;}"+

".overviewTable           {width: 100%; margin-top: 1.8em; line-height: 1.7em; border-spacing: 0.1em;}"+
".overviewTable td        {padding: 0 1em;}"+
".overviewTable th        {padding: 0 .5em;}"+
".overviewTable .duration {width: 6em;}"+
".overviewTable .passRate {width: 6em;}"+
".overviewTable .number   {width: 5em;}"+
".overviewTable tr        {height: 1.6em;}"+

"</style></head>";

//buildname = request.getParameter("buildname");

//Including MetaData in Emailable Report

/*HTMLCONTENTS = HTMLCONTENTS + "<b><font sze = \"3\">"+application.getAttribute("Title")+"</font></b><br>          "+
               "                           "+
               "                           "+
               "                           "+
               "                           "+
               "                           "+
               "    Generated by EnhancedReporting at "+application.getAttribute("ReportTime")+ " on "+application.getAttribute("ReportDate")+
               "<br>                           "+
               "                           "+
               "                            "+
               "                            "+
               "                            "+
               "   " + application.getAttribute("Host")+" "+application.getAttribute("Platform")+" " + application.getAttribute("JavaInfo");*/
               
               
    HTMLCONTENTS = HTMLCONTENTS + "<b><font sze = \"3\">"+application.getAttribute("Title")+"</font></b><br>"+
                   "<p align = \"right\">Generated by EnhancedReporting at "+ application.getAttribute("ReportTime") + " on "+ application.getAttribute("ReportDate")+" </p>"+
                   "<br><p align = \"right\"> "+ application.getAttribute("Host") + " "+ application.getAttribute("Platform")+ " "+ application.getAttribute("JavaInfo")+" </p>";
//Table Creation for Emailable Report
int size;
	int buildpassed = 0;
	int buildfailed = 0;
	int buildskipped = 0;
	int total = 0;

double passrate;

//buildname = request.getParameter("buildname");

//For Failed

rs = statement.executeQuery("select * from " + buildname
			+ " where Method_Status = 'Failed' and Time_Stamp = '" + timestamp + "'");

if (rs.next()) {

rs.beforeFirst();

rs.last();

size = rs.getRow();

buildfailed = size;

}
	rs.close();
	
	//For Skipped

rs = statement.executeQuery("select * from " + buildname
			+ " where Method_Status = 'Skipped' and Time_Stamp = '" + timestamp + "'");

if (rs.next()) {

rs.beforeFirst();

rs.last();

size = rs.getRow();

buildskipped = size;

}
	rs.close();
	
	
	//For Passed

rs = statement.executeQuery("select * from " + buildname
			+ " where Method_Status = 'Passed' and Time_Stamp = '" + timestamp + "'");

if (rs.next()) {

rs.beforeFirst();

rs.last();

size = rs.getRow();

buildpassed = size;

}
	rs.close();
	
	total = (buildpassed + buildfailed + buildskipped);
	
	passrate = ((double)buildpassed/(double)total)*100;

HTMLCONTENTS = HTMLCONTENTS + "<table border=\"1\" class=\"overviewTable\"><tr><th colspan=\"6\" class=\"header suite\">"+application.getAttribute("SuiteName")+
	                "</th></tr><tr class=\"columnHeadings\"><td> </td><th>Duration</th><th>Passed</th><th>Skipped</th><th>Failed</th><th>Pass Rate</th>"+
	                "</tr> <tr class=\"test\"> <td class=\"test\">Complete Details</td><td class=\"duration\">"+ application.getAttribute("Duration")+application.getAttribute("DurationForReRun") +"</td> <td class=\"zero number\">"+buildpassed+"</td>"+
	                "<td class=\"skipped number\">"+buildfailed +"</td> <td class=\"failed number\">"+buildskipped+"</td><td class=\"passRate\">"+passrate+
	                "</td> </tr></table><br><br>";
	%>

<%

//For Failed

rs = statement.executeQuery("select * from " + buildname
					+ " where Method_Status = 'Failed' and Time_Stamp = '" + timestamp + "'");

%>

<br>
<Table border="1" class="resultsTable">
 <tr><th colspan="3" class="header failed">Failed Tests</th></tr>
          <tr>
<TR>
<TD >ClassName</TD>
<TD >Status</TD>
<TD >StackTraces</TD>
</TR>
<%
HTMLCONTENTS = HTMLCONTENTS + "<br><Table border=\"1\" class=\"resultsTable\"><tr><th colspan=\"3\" class=\"header failed\">Failed Tests</th></tr><tr><TR><TD >ClassName</TD><TD >Status</TD><TD >StackTraces</TD></TR>";
if(rs.next()){
while(rs.next()){

%>
<TR>
<%
HTMLCONTENTS = HTMLCONTENTS + "<TR>";
classname = rs.getString(2).substring(rs.getString(2).lastIndexOf(".")+1);
%>
<TD ><%=classname%></TD>
<TD ><%=rs.getString(4)%></TD>
<%
HTMLCONTENTS = HTMLCONTENTS + "<TR><TD >" + classname + "</TD><TD >" + rs.getString(4) + "</TD>";
arrayForStackTracesTokens = rs.getString(6).split(";");
HTMLCONTENTS = HTMLCONTENTS + "<TD ><font color = #0000FF>"+arrayForStackTracesTokens[0]+"</a></font></TD>";
%>
<TD ><font color = #0000FF><a href ="#" onClick="toggle_visibility('Details')"><%= arrayForStackTracesTokens[0] %></a></font>
<div id="Details" style="display:none" ><%= arrayForStackTracesTokens[1] %></div></TD>
<TD ><div style="2px" ; width:100px; height:20px;">
<object width="60" height="20">
<PARAM NAME=FlashVars VALUE="txtToCopy=cfRuss.blogspot.com&js=alertUser()">
<param name="movie" value="copyButton.swf">
<embed src="copyButton.swf" flashvars="txtToCopy=<%=rs.getString(6)%>" width="80" height="20">
</embed>
</object>
</div></TD>
<TD><a href = "http://192.16.17.140/vertexbugs" target = "_blank">ReportDefect</a></TD>
</TR>
<%

}              
}

rs.close();
%>

</Table>
<%
HTMLCONTENTS = HTMLCONTENTS + "</Table>";
//For Skipped
rs = statement.executeQuery("select * from " + buildname
					+ " where Method_Status = 'Skipped' and Time_Stamp = '" + timestamp + "'");

HTMLCONTENTS = HTMLCONTENTS + "<br><br><Table border=\"1\" class=\"resultsTable\"><tr><th colspan=\"3\" class=\"header skipped\">Skipped Tests</th></tr><tr><TR><TD >ClassName</TD><TD >Status</TD></TR>";
%>
<br><br>

<Table border="1" class="resultsTable">
 <tr><th colspan="3" class="header skipped">Skipped Tests</th></tr>
          <tr>
<TR>
<TD >ClassName</TD>
<TD >Status</TD>
</TR>
<%
if(rs.next()){
	
while(rs.next()){

%>
<%
classname = rs.getString(2).substring(rs.getString(2).lastIndexOf(".")+1);
HTMLCONTENTS = HTMLCONTENTS + "<TR><TD>"+ classname + "</TD><TD>"+rs.getString(4)+"</TD></TR>";

%>
<TR>
<TD><%=classname%></TD>
<TD ><%=rs.getString(4)%></TD>
</TR>
<%

}
}
rs.close();
%>
</Table>
<%
HTMLCONTENTS = HTMLCONTENTS + "</Table>";
//For Passed
rs = statement.executeQuery("select * from " + buildname
					+ " where Method_Status = 'Passed' and Time_Stamp = '" + timestamp + "'");

HTMLCONTENTS = HTMLCONTENTS + "<br><br><Table border=\"1\" class=\"resultsTable\"><tr><th colspan=\"3\" class=\"header passed\">Passed Tests</th></tr><tr><TR><TD >ClassName</TD><TD >Status</TD></TR>";
%>
<br><br>

<Table border="1" class="resultsTable">
 <tr><th colspan="3" class="header passed">Passed Tests</th></tr>
          <tr>
<TR>
<TD >ClassName</TD>
<TD >Status</TD>
</TR>
<%
if(rs.next()){

while(rs.next()){

%>
<%
classname = rs.getString(2).substring(rs.getString(2).lastIndexOf(".")+1);
%>
<TR>
<TD ><%=classname%></TD>
<TD ><%=rs.getString(4)%></TD>
</TR>
<%
HTMLCONTENTS = HTMLCONTENTS + "<TR><TD >"+classname+"</TD><TD>"+rs.getString(4)+"</TD></TR>"; 
}
}

HTMLCONTENTS = HTMLCONTENTS + "</Table>";

byte b[] = HTMLCONTENTS.getBytes();

File f1 = new File ("webapps\\EnhancedReportingServerCode\\EmailableReport.html");

FileOutputStream fos = new FileOutputStream(f1);

fos.write(b);

SendEmail sendEmail = new SendEmail();
mailsent = sendEmail.init((String)application.getAttribute("SendEmail"),(String)application.getAttribute("EmailAddressee"),(String)application.getAttribute("EmailSender"),(String)application.getAttribute("EmailSmtp"),(String)application.getAttribute("EmailUserName"),(String)application.getAttribute("EmailPassword"));
if(mailsent){
	application.setAttribute("EmailStatus", "true");
}
else{
	application.setAttribute("EmailStatus", "false");
}
String strViewPage = "Start.jsp";
		
		RequestDispatcher dispatcher = request
				.getRequestDispatcher(strViewPage);
		if (dispatcher != null) {
			dispatcher.forward(request, response);
		}

}catch(SQLException se){
	//out.println("There is following SQL Exception in EmailableReport.jsp --->" + se.getMessage()+" Try to Rerun the Start.html." +
			//"We can refer TESTNG report for immediate assistance" );
	
}

catch(Exception e){
	
	if(!mailsent){
		application.setAttribute("EmailStatus", "false");
	}
	
	//out.println("There is following Exception in EmailableReport.jsp --->" + e.getMessage()+" Try to Rerun the Start.html." +
			//"We can refer TESTNG report for immediate assistance" );
}
%>

</Table>
</body>
</html>

Class File

package example;

import java.io.PrintStream;
import java.util.Date;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Message.RecipientType;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

public class SendEmail
{
  public boolean init(String sendEmail, String to, String from, String host, String username, String password)
  {
    if (sendEmail.equalsIgnoreCase("false")) {
      System.out
        .println("Email is not sent as SendEmail attribute is N0 in properties file");

return false;
    }

String[] addressees = to.split(",");

String filename = "webapps\\EnhancedReportingServerCode\\EmailableReport.html";

String msgText1 = "Testing Report.\n";
    String subject = "Testing Report";

Properties props = System.getProperties();
    props.put("mail.smtp.host", host);

Session session = Session.getInstance(props, null);
    try
    {
      MimeMessage msg = new MimeMessage(session);
      msg.setFrom(new InternetAddress(from));
      InternetAddress[] address = new InternetAddress[addressees.length];
      for (int i = 0; i < addressees.length; i++) {
        address[i] = new InternetAddress(addressees[i]);
      }
      msg.setRecipients(Message.RecipientType.TO, address);
      msg.setSubject(subject);

MimeBodyPart mbp1 = new MimeBodyPart();
      mbp1.setText(msgText1);

MimeBodyPart mbp2 = new MimeBodyPart();

FileDataSource fds = new FileDataSource(filename);

mbp2.setDataHandler(new DataHandler(fds));
      mbp2.setFileName("TestingReport");

Multipart mp = new MimeMultipart();
      mp.addBodyPart(mbp1);
      mp.addBodyPart(mbp2);

msg.setContent(mp);

msg.setSentDate(new Date());

Transport t = session.getTransport("smtp");
      try {
        t.connect(host, username, password);

t.sendMessage(msg, msg.getAllRecipients());
      }
      finally {
        t.close();
      }

System.out
        .println("Email has been sent to the recepients listed in properties file");
    }
    catch (Exception mex) {
      mex.printStackTrace();
      Exception ex = null;

ex.printStackTrace();
    }

return true;
  }
}

Now when the data is less mail is being sent and the page is being forwarded

But when dat is large the mailisent but forwarding is not done
It is saying "Cannot write the response once it is commited(Something like this)"

I am quite sure that thi s is problem of automatic flushing of output stream

How can I avoid this problem?
Thanks

Move the Java code out of a JSP and into a Java class where it belongs.