Storing / Retrieving PDF using JSP and Oracle

Dear All
I am building web application using Macromedia Dreamweaver , using JSP , Tomcat and Oracle 10gR1.
I need to build a JSP to upload a PDF file to the database and have a way to retrieve it from the database ,, all through JSP .
I need hints about the building architecture and how it is done ,, samples of code will be great.
Thank You Very Much

Use JSP, Servlet and some third party API (Apache Common File Upload) to store the PDF document in blob column.
--Balaji S

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Database locking using JSP and Oracle database

Dear All
I am reading about how to do database locking in general and i want to implement these mechanisms using JSP pages and oracle database, but i have the following questions:-
1.If i write a “select for update” quesry in the JSP page will it locks the record ? or it will not lock the record because the connection between the JSP pages and the server will be stateless in most online systems?
2.If i write all my jave code in transaction , something like this:-
• Begin transaction
• Commit or
• Rollback
Then should i be worried about the locking issues or the database manger will handle the locking mechanisms to insure data integrity(and what the default mechanism (if any) that the oracle database manger use to do the locking)?
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One way to solve this issue is as follows:
* You add a new column to each database table called 'version' which is of int type.
* Each time you alter any field in a record, you increament the version number.
* When you read a record and display it, you store the version number in your code
* when you go to update the record, you write your sql something like this:
update person set firstName=? where personId=? and version=?
Where the version is whatever you stored locally. If someone altered the record in the database while your
end user was looking at it, the version numbers will not match and the sql statement will
return zero as the number of records it altered. If its zero, inform the end user someone altered the record
while he was looking at it and weather or not he wants to proceed.
The chances of two people altering the same record in a table while both are logged in and viewing the same set of data is small so such collisions will be few.
You only need transactions if you are updating more than one record at a time (in the same table or multiple tables).
You dont need it for reading records if you use a single sql statement to read (for example: to join multiple tables).
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How to upload an html file using jsp and jdbc

Hi,
im trying to upload an html page using JSP and jdbc. but of no success.
my aim is to keep some important html pages in the database.the file size can vary.the file has to be selected from a local machine (through the browser) and uploaded to a remote machine(where the databse resides).
any help/sample code or pointer to any helpful link is appreciated.
thanks in advance
javajar2003

When uploading a file, I use a byte array as a temporary buffer..
So, you should then be able to store the byte array in the
database as binary data.
example>
//Temporary Buffer To Store File
byte[] tmpbuffer = new byte[860];
//Some Code To Upload File...
//File Should Now Be In Byte Array
//Get DB Connection and execute Prepared Statement
Connection con=//GET DB CONNECTION;
String sql=insert into TABLE(page) values(?);
PreparedStatement ps=con.prepareStatement(sql);
ps.setBytes(1,tempbuffer);
ps.executeUpdate();
//Close PS and Free DB Connection
..... and this method looks like you dont even have
to store the file in a byte array, you can just give
it the input stream.
ps.setBinaryStream(int, inputStream, int);
You may have to make several attempts at this. I have
uploaded a file and temporarily stored it in a byte array,
but have never from there stored it in the DB as binary
data.. but this looks like it'll work.
Good Luck!

Create login page using jsp, servlet & Oracle

hi,
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sona

See
http://www.oracle.com/technology/products/jdev/collateral/papers/10g/adfstrutsj2eesec.pdf
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Using Coherence and Oracle Database as the CacheStore

We are working on implementing a solution using Coherence and Oracle Database as the CacheStore. We initially implemented the Cache as a distributed-scheme which in turn uses the backing-map-scheme. We are trying to introduce transaction management and I used a scheme-ref in a transactional-scheme to point to an already existing distributed-scheme. However when I bring up the server, my custom coherence-cache-config.xml file is not recognized and Coherence comes up with the default setting. Given below is the snippet of my configuration file.
1) I would like to understand why the below configuration doesn’t work and am I doing it the right way? If not, what is the correct way of doing it?
2) There are a multiple transaction management options given in the documentation. Which are the ones that will work with a distributed-scheme and read-write-backing-map-scheme?
3) If transactional-schemes cannot work with distributed-scheme, what is the best way to have a distributed cache with a oracle database as a cache store?
<caching-scheme-mapping>
<cache-mapping>
<cache-name>id<cache-name>
<scheme-name>example-transactional<scheme-name>
</cache-mapping>
</caching-scheme-mapping>
<caching-schemes>
<transactional-scheme>
<scheme-name>example-transactional</scheme-name>
<scheme-ref>distributedcustomcache</scheme-ref>
<thread-count>10</thread-count>
</transactional-scheme>
<distributed-scheme>
<scheme-name>distributedcustomcache</scheme-name>
<service-name>DistributedCache</service-name>
<backing-map-scheme>
<read-write-backing-map-scheme>
<internal-cache-scheme>
<local-scheme>

<scheme-name>inMemory</scheme-name>
</local-scheme>
</internal-cache-scheme>
<cachestore-scheme>
<class-scheme>
<class-name>spring-bean:coherenceCacheStore</class-name>
<init-params>
<init-param>
<param-name>setEntityName</param-name>
<param-value>{cache-name}</param-value>
</init-param>
</init-params>
</class-scheme>
</cachestore-scheme>

</read-write-backing-map-scheme>
</backing-map-scheme>
<autostart>true</autostart>
</distributed-scheme>

Hi,
If you look at the documentation for transactional-scheme here: http://docs.oracle.com/cd/E24290_01/coh.371/e22837/appendix_cacheconfig.htm#BHCIABHA
you will see that it says The transactional-scheme element defines a transactional cache, which is a specialized distributed cache. That means that a transactional-scheme is already a distributed-scheme.
You will see from the same documentation above that there is no way in a transactional-scheme to configure things like cache-stores or listeners or even the backing-map-scheme as these are not supported on a transactional-scheme - so you cannot use a cache store.
Personally I would not use transactional-scheme unless you have some really big reason to do so - the restrictions far outweigh any perceived advantage of having a transaction. There are better ways to build applications so they do not require transactions, that is what we have been doing for years with Coherence so far, and there is no real reason to change that.
JK

Have an Adobe PRO 11 user converting a word Document to PDF using PDFMAKER and all of the numbering is disappearing from left column,. Has anyone had this happen and if so what is the fix?

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Is it possible to post a sample page some place for us to try out (dropbox or acrobat.com)? Is your Acrobat updated? What version of WORD are you using?

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By theway, i'm using TOMCat 5.0 as my JSP container.

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I think that jsp and servlet can realize the same functions, because when run a jsp, it is transferred to a servlet program, so when to use jsp and when to use servlet?
I am now developing the input interface for a website, I just use jsp and javabean to connect to weblogic and database, and I didn't use servlet, Is there any unseemliness?
Thank you!

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Need Help Badly on Shopping Cart Using JSP And Java Servlet

Hi All,
This is the 1st time i am trying to create a shopping cart using JSP and Servlet.
I have read through a few acticles but i still do not get the whole idea of how it works.
Please guide me as i need help very badly.
Thanks.
This is one of the jsp page which displays the category of products user would like to buy : Products.jsp
<html>
<head>
<title>Purchase Order</title>
</head>
<body topmargin="30">
<table border="0" width="100%" id="table1" cellpadding="2">
 <tr>
 <td bgcolor="#990000" width="96">
 
 Code</td>
 <td bgcolor="#990000" width="260">
 
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 Brand
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 UOM
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 <td bgcolor="#990000" width="57">
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 Qty</td>
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 Add 
 To Cart</td>
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<tr>
<td align="center" width="96" bgcolor="#CCCCCC">
123
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Tom Yam
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<td align="center" width="130" bgcolor="#CCCCCC">
Nissin
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<td align="center" width="146" bgcolor="#CCCCCC">
12 x 10's
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<td align="center" width="62" bgcolor="#CCCCCC">
$46.2
</td>
<td align="center" width="36" bgcolor="#CCCCCC">

<input type="Integer" name="Q10005" size="1">
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<td align="center" width="65" bgcolor="#CCCCCC">
<input type="checkbox" name="checkbox" value="123">
</tr>
<tr>
</table>
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</div>
</td>
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</table>
</body>
</html>
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import javax.servlet.http.*;
import javax.servlet.*;
import java.io.*;
import java.util.*;
import java.util.ArrayList;
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 String action = req.getParameter("hAction");
 if (action.equals("AddToCart"))
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 public void addToCart(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException
 try
 String url = "";
 String[] addList = req.getParameterValues("checkbox");
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 //String sessionID = sess.getId();
 DBClass dbClass = new DBClass();
 ArrayList cartList = new ArrayList();
 for (int i = 0; i < addList.length; i++)
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 double totalUnitAmt = qty * product.getUnitPrice();
 double totalCartonAmt = qty * product.getCartonPrice();
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 sess.setAttribute("cartList", cartList);
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 rd.forward(req, res);
 catch (Exception e)
 System.out.println(e);
From here, i would get the list of items which user has selected and add to the cartList, then i would direct the user to CartDetails.jsp which displayed the items user has selected.
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How i do store all the items user has selected ... everytime he would wan to view his cart ...
As i would be calling from jsp to servlet .. or jsp to servlet ... and i do not know how i should go about in creating the shopping cart.

Hi !
Yon can use a data structure as vector and store the items selected by the user into the vector . Keep the vector in session using session object , so the user can access the entire shopping cart from anywhere in the application .
Then , you can change the cart accordingly .
Hope this works.
Cheers ,
Pranav

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Hi,
Pages I have:
SearchEmployee.jsp
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The servlet shouldn't be used to store ANY data, let alone data to be accessed by other sevlets. Put the object into the Session object.

Writing Html Content into PDF using JSP

Dear All,
I am using JSP to generate Employee payslip dynamically. Presently i am diplaying payslip as on-screen display.
Here i want to give option "Save as PDF". I am able to create PDF file using IText Libraries. i want to integrate HTML code into the PDF file.
Writing HTML Content (using HTML Tags) into PDF.

Well it is a difficult ask and i believe we are trying to re-invent the wheel
Just to make my life simple i could have choosen either sample API given below to serve my cause
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2).[http://jasperforge.org/plugins/project/project_home.php?group_id=102] (Just design a simple report template using iReport and create a jrxml files and write a small code snipett such that you can pass few details at the runtime and can export the report in different formats which includes PDF aswell)
3).[http://www.object-refinery.com/jfreereport/] (Is much similar to what jasper offers in order to compile these you can either use pentaho product IDE or BEA/Oracle Actuate report tools)
You can simply try searching for different examples for getting more help on using the respective API's
Hope that helps :)
REGARDS,
RaHuL

How to export pdf using jsp

hai friends
i know to export excel using jsp
but tried the same process to pdf, it s not work..
please give some solution......
thanks
rex

It's working absolutely fine for me. I suspect the problem is one of these two:
1. You're giving the incorrect path of the file. Check the size of the downloaded file, it's probably 0 bytes.
2. Check the file that has been created on the server first; is that fine? That could also be the origin of the problem.
This is th code I've used. I copied an existing PDF to my webapps root folder ( $CATALINA_HOME/webapps/myApp/test.pdf ) and hardcoded the values of filename to check it and it works for me.
BufferedOutputStream out = new BufferedOutputStream( resp.getOutputStream());
try
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Reports Requirements using R12 and Oracle 10g Reports

Hi All,
Looking forward to some valuable inputs to propose a technical solution in R12 using 10g Reports Developer.
Requirements are :
1. Report output should be in Excel Format. ( Is this possible without XML Publisher using 10g Reports only )
2. Report Parameters to have multi selection criteria. ( Is this possible in 10g Reports and Oracle Apps, Report Manager responsibility ?)
Regards,
Anand

>
1. Report output should be in Excel Format. ( Is this possible without XML Publisher using 10g Reports only )
>
Yes, Reports can create output in Excel - but XML Publisher offers better and easier options.
>
2. Report Parameters to have multi selection criteria. ...
>
Pl explain what you mean by multi selection criteria.
HTH
Srini

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I want to print a webpage using Chrome to PDF, and then save that PDF to a Word document.
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Im using Adobe Acrobat X, Chrome version 32.0.1700.107 m.
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The quality of Export from Acrobat or Adobe's online subscription services very much depends upon the "inner quality" of how the PDF was created.
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Good In Good Out -- Garbage In Garbage Out. Sounds like you have the later.
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Am I right in assuming that you can't use the FOP PDF generation utility with Oracle Express Edition Database? i.e. no oc4j directory etc..
regards
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Am I right in assuming that you can't use the FOP PDF generation utility with Oracle Express Edition Database? i.e. no oc4j directory etc..
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Storing / Retrieving PDF using JSP and Oracle

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