Code include from database through servlet into jsp

Hi all,
Im alittle stuck at the moment. I need to store code in a database that will be retrieved and displayed on a webpage. I know how to retrieve the information and display it if it is just normal data. The data in the database will be html along with java code that has to be included into the jsp page. Im doing the retrieve in a java bean and the servlet uses that bean to pass the information to the jsp.
How can i include to code into the jsp so that it doesnt show as text but is included into the jsp?? Is this possible??
Niall

Hi,
If you are storing Java code in your database (a Java class file), perhaps you could use class loader and 1) retrieve your code as regular file, 2) use class loader to load it, 3) run methods from your newly created class.
Maybe you can write some sample code that loads any class from a file and calls methods on it, then you could modify that code and fit it in your servlet/JSP code.
Mark

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Not able to retrieve data from database through servlet

Hi friends,
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i m also pasting the code here
// Decompiled by Jad v1.5.8f. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://www.kpdus.com/jad.html
// Decompiler options: packimports(3)
// Source File Name:   EmployeeData.java
import java.io.*;
import java.sql.*;
import javax.sql.*;
import javax.servlet.ServletException;
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post the table format in SQL

Retrieve multiple images from database to servlet

Hi there,
I try to retrieve more than one images from database to Servlet/JSP . However, I get only one images in the result set. Here is my code. Please Help .
How do I display more than one images ( multiple rows ) from database to Servlet ?.
When I retrieve, I got 3 rows of binary data, but I don't know how to display it on the Servlet/JSP pages.
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import java.lang.*;
import java.sql.*;
import com.sybase.jdbcx.*;
public class RetrievePhoto extends HttpServlet {
static ResultSet rs;
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static Connection NGScon = null;
static SybDriver _driver = null;
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ServletException, IOException {
ServletOutputStream os = res.getOutputStream();
String driver = ""
String URL = "";
String Host = "";
String UN = ""; //assign your username here
String PW = ""; //assign your password here
try {
Class c = Class.forName( driver );
_driver = (SybDriver) c.newInstance();
DriverManager.registerDriver( (SybDriver) _driver );
NGScon = DriverManager.getConnection( URL + Host, UN, PW );
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// Got some other type of exception. Dump it.
os.println("Exception - java lang " + ex.getMessage() );
String PID = req.getParameter("PID"); //passing parameters from Servlet
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synchronized (NGSIDBstmt)
NGSstmt.setString(1, PID); //passing parameter to store procedure
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res.setContentType("image/gif");
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while( rs.next() ) {
is = rs.getBinaryStream("PHOTO");
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os.write(stuff);
if ( bytesRead == -1 ) break;
rs.close();
os.flush();
os.close(); //close outputstream
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When I retrieve, I got 3 rows of binary data, but I don't know how to display it on the Servlet/JSP pages.I will pick this bit of your post, because you seemed to have several partly-overlapping questions.
You are going about this wrong. You need to decide what your HTML will look like before you start writing servlet code. In this case you want to have something like a table, with an image in each row, right? Now what does the HTML for that look like? It's a <table> element, and so on, but what about the images? Well this is HTML, so it can't contain the binary images. It has to contains links to the images, and the browser will download the image from each of those links and put all of the downloads together into the page it displays.
That means you can't do it all with one servlet. You need a main servlet that generates the HTML, with the <table> element and the links to the images. Probably you need some DB calls here to find out how many images you're going to have, but you don't need to get them in this servlet. You just need to generate a link for each of them.
Then you need a second servlet that gets an image. It's going to get a single row from the DB and return the binary image you read from that row. Make sure to use "image/jpg" or whatever's appropriate instead of "text/html" in your response's content type here.
I will leave you to carry on from here. First step is to design the HTML that your main servlet will produce; remember that the links it generates need to carry enough information for the second servlet to be able to find the right image in the DB.
PC²

How to convert this Servlet into JSP

I am trying to convert this Servlet into JSP page.
How do I go about doing this?
Thanks.
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
import java.text.*;
/** Shows all items currently in ShoppingCart. Clients
* have their own session that keeps track of which
* ShoppingCart is theirs. If this is their first visit
* to the order page, a new shopping cart is created.
* Usually, people come to this page by way of a page
* showing catalog entries, so this page adds an additional
* item to the shopping cart. But users can also
* bookmark this page, access it from their history list,
* or be sent back to it by clicking on the "Update Order"
* button after changing the number of items ordered.
* <P>
* Taken from Core Servlets and JavaServer Pages 2nd Edition
* from Prentice Hall and Sun Microsystems Press,
* http://www.coreservlets.com/.
* © 2003 Marty Hall; may be freely used or adapted.
public class OrderPage extends HttpServlet {
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
HttpSession session = request.getSession();
ShoppingCart cart;
synchronized(session) {
cart = (ShoppingCart)session.getAttribute("shoppingCart");
// New visitors get a fresh shopping cart.
// Previous visitors keep using their existing cart.
if (cart == null) {
cart = new ShoppingCart();
session.setAttribute("shoppingCart", cart);
String itemID = request.getParameter("itemID");
if (itemID != null) {
String numItemsString =
request.getParameter("numItems");
if (numItemsString == null) {
// If request specified an ID but no number,
// then customers came here via an "Add Item to Cart"
// button on a catalog page.
cart.addItem(itemID);
} else {
// If request specified an ID and number, then
// customers came here via an "Update Order" button
// after changing the number of items in order.
// Note that specifying a number of 0 results
// in item being deleted from cart.
int numItems;
try {
numItems = Integer.parseInt(numItemsString);
} catch(NumberFormatException nfe) {
numItems = 1;
cart.setNumOrdered(itemID, numItems);
// Whether or not the customer changed the order, show
// order status.
response.setContentType("text/html");
PrintWriter out = response.getWriter();
String title = "Status of Your Order";
String docType =
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 " +
"Transitional//EN\">\n";
out.println(docType +
"<HTML>\n" +
"<HEAD><TITLE>" + title + "</TITLE></HEAD>\n" +
"<BODY BGCOLOR=\"#FDF5E6\">\n" +
"<H1 ALIGN=\"CENTER\">" + title + "</H1>");
synchronized(session) {
List itemsOrdered = cart.getItemsOrdered();
if (itemsOrdered.size() == 0) {
out.println("<H2><I>No items in your cart...</I></H2>");
} else {
// If there is at least one item in cart, show table
// of items ordered.
out.println
("<TABLE BORDER=1 ALIGN=\"CENTER\">\n" +
"<TR BGCOLOR=\"#FFAD00\">\n" +
" <TH>Item ID<TH>Description\n" +
" <TH>Unit Cost<TH>Number<TH>Total Cost");
ItemOrder order;
// Rounds to two decimal places, inserts dollar
// sign (or other currency symbol), etc., as
// appropriate in current Locale.
NumberFormat formatter =
NumberFormat.getCurrencyInstance();
// For each entry in shopping cart, make
// table row showing ID, description, per-item
// cost, number ordered, and total cost.
// Put number ordered in textfield that user
// can change, with "Update Order" button next
// to it, which resubmits to this same page
// but specifying a different number of items.
for(int i=0; i<itemsOrdered.size(); i++) {
order = (ItemOrder)itemsOrdered.get(i);
out.println
("<TR>\n" +
" <TD>" + order.getItemID() + "\n" +
" <TD>" + order.getShortDescription() + "\n" +
" <TD>" +
formatter.format(order.getUnitCost()) + "\n" +
" <TD>" +
"<FORM>\n" + // Submit to current URL
"<INPUT TYPE=\"HIDDEN\" NAME=\"itemID\"\n" +
" VALUE=\"" + order.getItemID() + "\">\n" +
"<INPUT TYPE=\"TEXT\" NAME=\"numItems\"\n" +
" SIZE=3 VALUE=\"" +
order.getNumItems() + "\">\n" +
"<SMALL>\n" +
"<INPUT TYPE=\"SUBMIT\"\n "+
" VALUE=\"Update Order\">\n" +
"</SMALL>\n" +
"</FORM>\n" +
" <TD>" +
formatter.format(order.getTotalCost()));
String checkoutURL =
response.encodeURL("../Checkout.html");
// "Proceed to Checkout" button below table
out.println
("</TABLE>\n" +
"<FORM ACTION=\"" + checkoutURL + "\">\n" +
"<BIG><CENTER>\n" +
"<INPUT TYPE=\"SUBMIT\"\n" +
" VALUE=\"Proceed to Checkout\">\n" +
"</CENTER></BIG></FORM>");
out.println("</BODY></HTML>");
}

Sorry.
actually this is my coding on the bottom.
Pleease disregard my previous coding. I got the different one.
My first approach is using <% %> around the whole doGet method such as:
<%
String[] ids = { "hall001", "hall002" };
setItems(ids);
setTitle("All-Time Best Computer Books");
out.println("<HR>\n</BODY></HTML>");
%>
I am not sure how to break between code between
return;
and
response.setContentType("text/html");
Here is my coding:
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException
     String[] ids = { "hall001", "hall002" };
     setItems(ids);
     setTitle("All-Time Best Computer Books");
if (items == null) {
response.sendError(response.SC_NOT_FOUND,
"Missing Items.");
return;
response.setContentType("text/html");
PrintWriter out = response.getWriter();
String docType =
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 " +
"Transitional//EN\">\n";
out.println(docType +
"<HTML>\n" +
"<HEAD><TITLE>" + title + "</TITLE></HEAD>\n" +
"<BODY BGCOLOR=\"#FDF5E6\">\n" +
"<H1 ALIGN=\"CENTER\">" + title + "</H1>");
CatalogItem item;
for(int i=0; i<items.length; i++) {
out.println("<HR>");
item = items;
if (item == null) {
out.println("<FONT COLOR=\"RED\">" +
"Unknown item ID " + itemIDs[i] +
"</FONT>");
} else {
out.println();
String formURL =
"/servlet/coreservlets.OrderPage";
formURL = response.encodeURL(formURL);
out.println
("<FORM ACTION=\"" + formURL + "\">\n" +
"<INPUT TYPE=\"HIDDEN\" NAME=\"itemID\" " +
" VALUE=\"" + item.getItemID() + "\">\n" +
"<H2>" + item.getShortDescription() +
" ($" + item.getCost() + ")</H2>\n" +
item.getLongDescription() + "\n" +
"<P>\n<CENTER>\n" +
"<INPUT TYPE=\"SUBMIT\" " +
"VALUE=\"Add to Shopping Cart\">\n" +
"</CENTER>\n<P>\n</FORM>");
out.println("<HR>\n</BODY></HTML>");

How to specifiy the provider to be Oracle.ManagedDataAccess.Client when creating a dynamic connection string with EF Code First from Database?

I am trying to use the relatively new Code First from Database with the newest EF (6.x) and on an Oracle database (11g, but I have installed the newest ODTwithODAC). First of all, it works fine as long as the connection string is inside the App.Config file. But when I try to build it dynamically in the C# code (or rather, statically at the moment) it fails. I have it working with a dynamically built connection string when doing Model from Database though, so I'm at a loss right now.
First, I have created a second constructor for the context class that takes a string and does base(connectionString). Then I build the connection string via
OracleConnectionStringBuilder oracleBuilder = new OracleConnectionStringBuilder();
oracleBuilder.DataSource = "TEST.BLA.COM";
oracleBuilder.UserID = "ABC";
oracleBuilder.Password = "abc";
oracleBuilder.PersistSecurityInfo = true;
string connection = oracleBuilder.ToStrin();
Now trying to open an EntityConnection by giving to it this provider-specific connection string (or even the static one from the App.Config) doesn't work; I get "keyword not supported: user id"). Trying it by creating a context and giving this connection string doesn't work either. I'm pretty sure that this is because I didn't specify the provider to use; after all, it should use the Oracle.ManagedDataAccess.Client provider and not an SQL Server based one.
I then tried to get around this by using an EntityConnectionStringBuilder on top and specifying the provider keyword there, but then I get "keyword not supported: provider" when using it in the context constructor, and "the 'metadata' keyword is always required" when using it with the EntityConnection constructor.
As I said above: I bet it's the provider that I have to specify somehow, but I don't know how. The code that does work is the following:
using (var context = new Model())
context.Database.Connection.Open();
context.Database.Connection.Close();
When I read context.Database.Connection.ConnectionString, it is exactly the provider-specific connection string I created above, but I don't know where to specify the provider again. Do you know of any way to do this? Certainly there must be one.
PS: I have also posted this question on http://stackoverflow.com/questions/27979454/ef-code-first-from-database-with-managed-oracle-data-access-dynamic-connection because it is quite urgent and I'd like to use Code First from Database. Otherwise I'd have to go "back" to using Model from Database again, which is not ideal because we have updatable views where the .edmx-file has to be edited after every reload of the model, while with Code First from DB inserting into the view automatically works.

I am trying to use the relatively new Code First from Database with the newest EF (6.x) and on an Oracle database (11g, but I have installed the newest ODTwithODAC). First of all, it works fine as long as the connection string is inside the App.Config file. But when I try to build it dynamically in the C# code (or rather, statically at the moment) it fails. I have it working with a dynamically built connection string when doing Model from Database though, so I'm at a loss right now.
First, I have created a second constructor for the context class that takes a string and does base(connectionString). Then I build the connection string via
OracleConnectionStringBuilder oracleBuilder = new OracleConnectionStringBuilder();
oracleBuilder.DataSource = "TEST.BLA.COM";
oracleBuilder.UserID = "ABC";
oracleBuilder.Password = "abc";
oracleBuilder.PersistSecurityInfo = true;
string connection = oracleBuilder.ToStrin();
Now trying to open an EntityConnection by giving to it this provider-specific connection string (or even the static one from the App.Config) doesn't work; I get "keyword not supported: user id"). Trying it by creating a context and giving this connection string doesn't work either. I'm pretty sure that this is because I didn't specify the provider to use; after all, it should use the Oracle.ManagedDataAccess.Client provider and not an SQL Server based one.
I then tried to get around this by using an EntityConnectionStringBuilder on top and specifying the provider keyword there, but then I get "keyword not supported: provider" when using it in the context constructor, and "the 'metadata' keyword is always required" when using it with the EntityConnection constructor.
As I said above: I bet it's the provider that I have to specify somehow, but I don't know how. The code that does work is the following:
using (var context = new Model())
context.Database.Connection.Open();
context.Database.Connection.Close();
When I read context.Database.Connection.ConnectionString, it is exactly the provider-specific connection string I created above, but I don't know where to specify the provider again. Do you know of any way to do this? Certainly there must be one.
PS: I have also posted this question on http://stackoverflow.com/questions/27979454/ef-code-first-from-database-with-managed-oracle-data-access-dynamic-connection because it is quite urgent and I'd like to use Code First from Database. Otherwise I'd have to go "back" to using Model from Database again, which is not ideal because we have updatable views where the .edmx-file has to be edited after every reload of the model, while with Code First from DB inserting into the view automatically works.

Implementing Database codes FAIL /error in parsing data into jsp page

Hi there,
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This is the method i put in the beans to test out the database connection.
Thanks Loads
Quatre

Hi there,
Thanks for the reply, i thought that no one is going to reply me anymore. Thanks loads.
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Bean Packeage name: Beans1
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</hbj:content>
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import com.sapportals.htmlb.enum.*;
import com.sapportals.htmlb.event.*;
import com.sapportals.htmlb.page.*;
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import Beans1.Bean1;
import com.sapportals.htmlb.*;
import com.sapportals.htmlb.enum.*;
import com.sapportals.htmlb.event.*;
import com.sapportals.htmlb.page.*;
import com.sapportals.portal.htmlb.page.*;
import com.sapportals.portal.prt.component.*;
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                      myBean1 = (Bean1) o;
                    Object value = request.getSession().getValue("myBeans1");
                    if (value==null || (value instanceof Bean1)){
                         myBean1 = new Bean1();
                    request.getSession().putValue("myBean1", Object value);
          DataBase cn = new DataBase();
          name = cn.dataBaseConnection();
          myBean1.setName(name);
//name = "gir";
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// IPortalComponentRequest request = (IPortalComponentRequest) this.getRequest();
//IPortalComponentContext myContext = request.getComponentContext();
//Bean1 myNameContainer = (Bean1) myContext.getValue("myBean1");
//myNameContainer.setName(name);
      // fill your bean with data here...
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    public void doProcessBeforeOutput() throws PageException {
      this.setJspName("testDBv5.jsp");
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public static void main (String[] arg){
     testDBv5DynPage ef = new testDBv5DynPage();
           ef.doInitialization();
Thanks Loads
Quatre

Retriving data from database through EntityBean to WebDynpro

Dear SDN's,
I have integrated my EJB appliaction into WebDynpro via Data Access Command Bean.
Here is my scenario.
1.Created a Dictionary Project,
2.Created a EntityBean,
In Entity Bean, i have created a finder method using the query - FindByAllAccounts
used the EJB QL to retrieve the records from the database using the following syntax in EntityBean.
<b><query>
     <query-method>
             <method-name>findByAllAccounts</method-name>
            <method-params/>
   </query-method>
   <ejb-ql>select object(s) from ServiceTypeBean s</ejb-ql>
</query></b>
3.In Session bean, the viewAllServiceTypes method which will be invoked from within the Command Bean is called the entity bean of the local home, findByAllAccount
Command Bean invoked the session bean, viewAllServiceTypes. It returns the resultSet dataType
In Web Dynpro, add the code shown below in the QueryAll button and also, the EAR file is added to the Web Dynpro as a sharing reference
After the execution of my WebDynpro,
it returns no records. It should return 2 records. I dont know where it goes wrong.
Correct me if anything is worng here.
Here what my doubt is, the return of the Entity bean and Session Bean is Collection type.
If i store the retrieved records in collection Object like vector, how can i differentiate each record to display as individual.
anyway I tried by converting the Collection Object to ResultSet.
Here is the code in the command Bean,
public ResultSet execute1()
Collection col=new Vector();
ResultSet rs=null;
try{
col=theSrType.viewAllServiceTypes();
rs=(ResultSet) col.iterator();
}catch(Exception e){
e.printStackTrace();
return rs;
I am just calling the execute1() method in my Webdynpro program.
I know here something is wrong but my aim is to retireve set of records from database via Entity bean to display in WebDynpro Table.
Your help will be appreciated.
Regards,
Sireesha.B

For helper class you have to create a separate java project.
Auxillary class is required to store the data from the entity bean in a form that can be displayed.
For this purpose, the auxillary class must contain a field for each relevant value. The fields will be named similar to their definition in the entity bean.
For example:Entity Bean has persistent fields id, firstname, lastname.
Auxillary Class should contain all these fields and getter and setter method to access these fields.
In your EJB module project give this auxillary class project reference.
In the session bean parse the collection of Entitty Bean local references and convert it to collection of auxillary class reference.
In the command bean declare a collection type variable, write getter and setter methods for this variable, call the session bean method and assign it declared collection type variable.You dont need to write any logic inside command bean method.
Go through this URL for more information.
<a href="http://help.sap.com/saphelp_erp2005vp/helpdata/en/70/13353094af154a91cbe982d7dd0118/frameset.htm">http://help.sap.com/saphelp_erp2005vp/helpdata/en/70/13353094af154a91cbe982d7dd0118/frameset.htm</a>
Message was edited by:
        Monalisa Biswal

How to populate a field from database through personalization

I need to populate value of a field from database on self service transaction web page. This field is not configured as EIT or SIT, nor available in seeded transaction.I need to know abt creating some item through personalization where i can write a query . This item will execute the query and display the returned value on the page or something on the similar line.
Thanks in advance,
Tanveer

This workaround should be used as a one time approach till you move to 11.5.10 CU3.
Here are the details,
You just need to add the following tags inside the site or function level customization document, remember it should be either site or function only no other levels are supported for adding a new item.
before adding the following tags you need to find out the following details,
1. what is the last item in the advancedTable, column or columnGroup in the base metadata. Do not conside the columns inside the columnGroups for this, just the last item which might be a column or a columngroup. Get the if of that item.
2. You should know what is the view instance and viewattribute you will be attaching
3. Remember you can only add columns through personalization and not columnGroups.
4. Replace the appropriate values for the properties amrked with {...} with your own values. You can change the other properties to reflect any specific requirement you want. Make sure you provide correct values.
<insert after="{the id you got from step 1}">
<oa:column id="{yourid}" adminCustomizable="true" bandingShade="none"
cellNoWrapFormat="false" columnDataFormat="textFormat" displayGrid="true"
rendered="true" scope="." totalValue="false" userCustomizable="false"
xmlns:oa="http://xmlns.oracle.com/oa">
<ui:columnHeader xmlns:ui="http://xmlns.oracle.com/uix/ui">
<oa:sortableHeader id="{yourid}" adminCustomizable="true"
cellNoWrapFormat="false" initSortSeq="none" prompt="{your prompt}"
rendered="true" required="no" scope="." sortState="no"
userCustomizable="false"/>
</ui:columnHeader>
<ui:contents xmlns:ui="http://xmlns.oracle.com/uix/ui">
<oa:messageStyledText id="{yourid}" adminCustomizable="true"
cellNoWrapFormat="false" dataType="VARCHAR2" initSortSeq="none" queryable="false" rendered="true" required="no" scope="."
selectiveSearchCriteria="false"
serverUnvalidated="false" sortState="no" tipType="none" totalValue="false"
userCustomizable="false" vAlign="middle" viewAttr="{your view attribute}" viewName="{your view instance name}"
warnAboutChanges="true"/>
</ui:contents>
</oa:column>
</insert>
You can insert these tags at the end of any existing tags within the <modifications>
</modifications> tag in the document.

Uploading pictures into database through servlet

I'm having problems uploading pictures from servlet to a database:
public Exception storePicture(byte[] bytes, String fileName){
          int fileNo;
          try{
               if(!SELECT_FILENAME_NO.execute()){
                    return new Exception("number select");
               ResultSet resultSet = SELECT_FILENAME_NO.getResultSet();
               if( resultSet.next() ){
                    fileNo = resultSet.getInt( "nextval" );
               }else{
                    return new Exception("resultset number");
               INSERT_PICTURE_BYTES.setBytes(1, bytes);
               INSERT_PICTURE_BYTES.setString( 2, fileName );
               INSERT_PICTURE_BYTES.setInt(3, 0);
               if(INSERT_PICTURE_BYTES.executeUpdate() > 0){
                    return new Exception("insert_bytes");
          } catch (SQLException e) {
               e.printStackTrace();
               return e;
          return new Exception("end");
     }with this code I get error message: Data size bigger than max size for this type: 142485.
with a picture of only 150kB
The exception is thrown on the setBytes line.
I also tried to add
ByteArrayInputStream input = new ByteArrayInputStream(bytes);
INSERT_PICTURE_BYTES.setBinaryStream(1, input, bytes.length);and..
InputStream in = input;
INSERT_PICTURE_BYTES.setBinaryStream(1, in, bytes.length);...both giving error message: Io exception: Connection reset.
The exception is thrown on the setBinaryStream line.
I have never done this before and I can't figure out what to do. Anyone?
thanks

INSERT_PICTURE_BYTES = connection.prepareStatement("INSERT INTO pictures(picture, fileName, approved) values(?, ?, ?)");Io exception: Connection reset
oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179)
oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:333)
oracle.jdbc.driver.OracleStatement.executeNonQuery(OracleStatement.java:2061)
oracle.jdbc.driver.OracleStatement.doExecuteOther(OracleStatement.java:1940)
oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:2709)
oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:589)
rockIt.db.PictureDAO.storePicture(PictureDAO.java:113)
rockIt.control.DbController.storePicture(DbController.java:201)
servlets.main.Upload.doPost(Upload.java:69)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:825)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:731)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:526)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
java.lang.Thread.run(Thread.java:619)

Extracting a value from the j_security_check servlet into a JSP page

Hi Folks...
I have a problem as follows:
I log in into the web app, via my login.jsp page. Below is the code for the form that accepts the login information
<form method="POST" action="j_security_check">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
    <td align="right">Username: </td>
    <td><input type="text" name="j_username"></td>
</tr>
<tr>
    <td align="right">Password: </td>
    <td><input type="password" name="j_password"></td>
</tr>
<tr>
    <td></td>
    <td><input type="submit" value="Login"></td>
</tr>
</table>
</form>Login is sucessful and I am brought to the 'studentstub.jsp' page. I would like the user name to appear on the 'studentstub.jsp' page. I used the following code in the 'studentstub.jsp' page :
<td><%= request.getParameter("j_username")%></td> but all I am getting is a null. The 'j_security_check' servlet is not exactly part of my package, but the glassfish app server. Is there anything wrong in the way I am extracting the information from 'j_security_check' ? Hope someone can advise, thanks.

Hi Folks..
I managed to get a reply from another forum and the suggested solution works. I am going to share it with everyone here.
I repalced this line of code:
<td><%= request.getParameter("j_username")%></td>with this:
<td><%= request.getRemoteUser()%></td>The 'getRemoteUser' method from HttpServletRequest returns the name of the authenticated user. I hope this information will be helpful to those caught in a simillar problem. Thanks.

How to upload and store pic in database through Servlet

Hi
I am new to servlet programming. I need some help i am developing shopping cart of pictures
I have problem in admin module
When admin upload new picture and description of picture
i want to store information of uploaded picture in database so that user can view new photographs for shopping
Now problem is that how to upload and store picture in database and how to retrive picture from datebase and disply on user end
I am in great difficulty
I need some sample code
Can some one help me
I shall be very thankful

Use BLOBS to upload and download image files into the database....
Here is a sample code for doing it from one of my earlier posts....
http://forum.java.sun.com/thread.jsp?forum=31&thread=143837
Once you get the file from the database, use the image tag in HTML to display your picture....
Let me know if you have any further questions....

Determine an URL from an identifier (servlet name, jsp name or something)

I would like to write URLs in my JSP files, but I don't want to hardcode them. Is any way to use the datas from the web.xml?
So I would write the name of the Servlet / name of the JSP file and it would resolve to an URL.
Is any method for this?
Very thanks your help!

The server will load the properties file into memory so there will be some memory overhead. The actual amount of memory used will be server dependent. If you want to make sure the file is loaded just once and the data cached for the entire application set the scope in the fmt:setBundle tag to application. This means the file will be loaded once and stored in memory. The cache will be maintained for the life of the application.
If you want to free memory when the the properties aren't needed, then you can set the scope in the fmt:setBundle tag to page (the default), which will allow (but not force) the memory used by the cache to be released when memory is low.
Note that there are 2 scopes at play here, the properties file is loaded and cached in the resource-loading process so the file would only need to be re-loaded when the data changed. The second is the scope the bundle is stored in for the web application. As long as the web application holds the bundle, the resource cache will not be freed. When the reference is released by the web application the cache may be released if memory requires it, or may be kept so the next time the resource is needed there isn't an overhead related to loading the bundle again.
Setting the scope in the fmt:setBundle to page is the most flexible use, because it allows the Resource cache to hold the properties file in memory then just provide references as needed (much like if you had the scope set to application), but also allows the cache to be free its memory if required.
In the particular example provided above, you don't have control of the Resource Caching. You could implement your own implementation of a ResourceBundle and use ResourceBundle.Control to configure the Cache. This could be done invisibly behind the scenes if you find the memory used by the default implementation too much.

Send email from j2me through servlet

Hi people,
i hope you can help me because i am new in network programming.
I am trying to send email from j2me to googlemail account I have 2 classes EmailMidlet (which has been tested with wireless Toolkit 2.5.2 and it works) and the second class is the servlet-class named EmailServlet:
when i call the EmailServlet, i get on the console:
Server: 220 mx.google.com ESMTP g28sm19313024fkg.21
Server: 250 mx.google.com at your service
this is the code of my EmailServlet
import java.io.*;
import java.net.Socket;
import java.net.UnknownHostException;
import java.text.*;
import java.util.Date;
import javax.servlet.*;
import javax.servlet.http.*;
public class EmailServlet extends HttpServlet {
   public void doPost(HttpServletRequest request, HttpServletResponse response)
         throws IOException, ServletException {
      System.out.println("____emailservlet.doPost");
      response.setContentType("text/plain");
      PrintWriter out = response.getWriter();
      System.out.println("______________________________");
      out.println();
      String to = request.getParameter("to");
      System.out.println("____________________________to" + to);
      String subject = request.getParameter("subject");
      String msg = request.getParameter("msg");
      // construct an instance of EmailSender
      System.out.println("servlet_to" + to);
      send("[email protected]", to, subject, msg);
      out.println("mail sent....");
   public void send(String from, String to, String subject, String msg) {
      Socket smtpSocket = null;
      DataOutputStream os = null;
      DataInputStream is = null;
      try {
         smtpSocket = new Socket("smtp.googlemail.com", 25);
         os = new DataOutputStream(smtpSocket.getOutputStream());
         is = new DataInputStream(smtpSocket.getInputStream());
      } catch (UnknownHostException e) {
         System.err.println("Don't know about host: hostname");
      } catch (IOException e) {
         System.err
               .println("Couldn't get I/O for the connection to: hostname");
      if (smtpSocket != null && os != null && is != null) {
         try {
            os.writeBytes("HELO there" + "\r\n");
            os.writeBytes("MAIL FROM: " + from + "\r\n");
            os.writeBytes("RCPT TO: " + to + "\r\n");
            os.writeBytes("DATA\r\n");
            os.writeBytes("Date: " + new Date() + "\r\n"); // stamp the msg
                                                // with date
            os.writeBytes("From: " + from + "\r\n");
            os.writeBytes("To: " + to + "\r\n");
            os.writeBytes("Subject: " + subject + "\r\n");
            os.writeBytes(msg + "\r\n"); // message body
            os.writeBytes(".\r\n");
            os.writeBytes("QUIT\r\n");
            // debugging
            String responseLine;
            while ((responseLine = is.readLine()) != null) {
               System.out.println("Server: " + responseLine);
               if (responseLine.indexOf("delivery") != -1) {
                  break;
            os.close();
            is.close();
            smtpSocket.close();
         } catch (UnknownHostException e) {
            System.err.println("Trying to connect to unknown host: " + e);
         } catch (IOException e) {
            System.err.println("IOException: " + e);
   } 1.when i print "to" in EmailServlet also:
String to = request.getParameter("to");
      System.out.println("____________________________to" + to); it show null on the console :confused:
2. ist this right in case of googlemail.com?
smtpSocket = new Socket("smtp.googlemail.com", 25); I would be very grateful if somebody can help me.

jackofall
Please don't post in old threads that are long dead. When you have a question, please start a topic of your own. Feel free to provide a link to an old thread if relevant.
I'm locking this thread now.
db

How to fetch data from DataBase using Servlet ?

Hi all,
Till now, i was just sending values from web page and receive the data in excel format using servlets.
But, now, i want to fetch data from data base. I will be giving inputs in the web page(for the query)....ON click of submit button,
Servlet should be called.
Depending on the input, query has to be executed, and response should be sent to the user.
How to do it?
Code
import java.text.*;
import java.sql.*;
import java.util.*;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.OutputStream;
/** Simple servlet that reads three parameters from the html
form
public class Fetchdata extends HttpServlet
          String query=new String();
          String uid="ashvini";
          String pwd="******";
          try
               Connection con=null;
               Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
               String url = "jdbc:odbc:Testing";
               con = DriverManager.getConnection(url, uid, pwd);
               Statement s = con.createStatement();
               query = "select * from gowri.msllst1";
               ResultSet rs = s.executeQuery(query);
          public void doGet(HttpServletRequest request,HttpServletResponse response)
          throws ServletException, IOException
                    response.setContentType("application/vnd.ms-excel");
                    ServletOutputStream out=response.getOutputStream();
                    out.println("<HTML>" +"<BODY BGCOLOR=\"#FDF5E6\">\n" +
                    "<H1 ALIGN=CENTER>" + title + "</H1>\n" +
                    "<table>" +" <th>ITEM Code</th>");
                    while(rs.next())
                    out.println("<tr><td>" rs.getString(1).trim()"</tr></td>");
                    }//end of while
                    out.println("</table></BODY></HTML>");
               }//end of doGet method
     }catch(Exception e)
                    System.out.println(e);
It is giving error message as:
C:\Program Files\Apache Tomcat 4.0\webapps\general\srvlt>javac Fetchdata.java
Fetchdata.java:17: illegal start of type
try
^
Fetchdata.java:48: <identifier> expected
^
2 errors
Is this format is correct? am i placing this doGet method at the right place? is my program's logic is correct?
Please help me?
Regards
AShvini

There is some mistakes in ur code.....how can try catch exists outside a function???
make use of try catch isde ur doGet method and put
Connection con=null;
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url = "jdbc:odbc:Testing";
con = DriverManager.getConnection(url, uid, pwd);
Statement s = con.createStatement();
query = "select * from gowri.msllst1";
ResultSet rs = s.executeQuery(query);
isdie doGet method, for the time being,
i think u get me..
regards
shanu

Urgent help with simple BPEL process for reading data from database

Hello there,
I need help with BPEL project.
i have created a table Employee in Database.
I did create application, BPEL project and connection to the database properly using Database Adapter.
I need to read the records from the database and convert into xml fomat and it should to go approval for BPM worklist.
Can someone please describe me step by step what i need to do.
Thx,
Dps

I have created a table in Database with data like Empno,name,salary,comments.
I created Database Connection in jsp page and connecting to BPEL process.
It initiates the process and it goes automatically for approval.
Please refer the code once which i created.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<%@page import="java.util.Map" %>
<%@page import="com.oracle.bpel.client.Locator" %>
<%@page import="com.oracle.bpel.client.NormalizedMessage" %>
<%@page import="com.oracle.bpel.client.delivery.IDeliveryService" %>
<%@page import="javax.naming.Context" %>
<%@page import="java.util.Hashtable" %>
<%@page import="java.util.HashMap" %>
<%@ page import="java.sql.*"%>
<%@ page import= "jspprj.DBCon"%>
<html>
<head>
<title>Invoke CreditRatingService</title>
</head>
<body>
<%
DBCon dbcon=new DBCon();
Connection conn=dbcon.createConnection();
Statement st=null;
PreparedStatement pstmt=null;
Hashtable env= new Hashtable();
ResultSet rs = null;
Map payload =null;
try
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.evermind.server.rmi.RMIInitialContextFactory");
env.put(Context.PROVIDER_URL, "opmn:ormi://localhost:port:home/orabpel");//bpel server
env.put("java.naming.security.principal", "username");
env.put("java.naming.security.credentials", "password");//bpel console
Locator locator = new Locator("default","password",env);
IDeliveryService deliveryService =
(IDeliveryService)locator.lookupService(IDeliveryService.SERVICE_NAME );
// construct the normalized message and send to Oracle BPEL Process Manager
NormalizedMessage nm = new NormalizedMessage();
java.util.HashMap map = new HashMap();
st=conn.createStatement();
out.println("connected");
String query1="Select * from EMPLOYEE";
rs=st.executeQuery(query1);
/*reading Data From Database and converting into XML format
so that no need of going to BPEL console and entering the details.
while (rs.next()){
String xml1 = "<AsynchBPELProcess1ProcessRequest xmlns='http://xmlns.oracle.com/AsynchBPELProcess1'>"+
"<Empno>"+rs.getString(1)+"</Empno>"+
"<EmpName>"+rs.getString(2)+"</EmpName>"+
"<Salary>"+rs.getString(3)+"</Salary>"+
"<Comments>"+rs.getString(4)+"</Comments>"+
"</AsynchBPELProcess1ProcessRequest>";
out.println(xml1);
nm.addPart("payload", xml1 );
// EmployeeApprovalProcess is the BPEL process in which human task is implemented
deliveryService.post("EmployeeApprovalProcess", "initiate", nm);
// payload = res.getPayload();
out.println( "BPELProcess CreditRatingService executed!<br>" );
// out.println( "Credit Rating is " + payload.get("payload") );
//Incase there is an exception while invoking the first server invoke the second server i.e lsgpas13.
catch(Exception ee) {
//("BPEL Server lsgpas14 invoking error.\n"+ee.toString());
%>
</body>
</html>
Its working fine.And i want it for Bulk approvals.please help me step by step procedure if any other way to implement this.

Code include from database through servlet into jsp

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