Passing Array from Class to JSP

Hoi all,
I am using MyEclipse Tomcat 4.1 and MySql
I am trying to pass a 2D array from my struts framework action class to the forwarding action JSP.
the Array is filled correctly, I check that by printing the values of the array as they are filled by my ResultSet into my console.
but when I pass the Array to my JSP the value is null.
I did the following in the class:
request.setAttribute("Aray",aray); and in the JSP i request the Attrebute as follows:
String[][] ary = request.getParameter("Aray"); Any help will be appreciated thx .

request.setAttribute("Aray",aray);
String[][] ary = request.getParameter("Aray");
See the difference?

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Can some one please help me understanding how can I pass array from JSP page to a stored procedure in database.
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Thanks.
I tried ArrayExampla.java and was successful in passing array values to the stored database procedure.
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ORA-00932 when trying to pass ARRAY from Java SP to PL/SQL

Hi all
I am trying to pass ARRAYs back and forth between PL/SQL and Java stored procedures. But I keep getting:
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create or replace type CONTENTP.sentences_array as VARRAY(1000) of CLOB
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declare
proc_clob CLOB;
arr SENTENCES_ARRAY;
begin
SELECT document_body
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from documents
where document_id = 618784;
arr := processdocument.sentencesplit (proc_clob);
end;
PROCESSDOCUMENT package definition:
CREATE OR REPLACE PACKAGE CONTENTP.PROCESSDOCUMENT AS
FUNCTION sentenceSplit(Param1 CLOB)
return SENTENCES_ARRAY
AS
LANGUAGE java
NAME 'com.contentp.documents.ProcessDocument.sentenceSplit(oracle.sql.CLOB) return oracle.sql.ARRAY';
FUNCTION removeHTML(Param1 CLOB)
return CLOB
AS
LANGUAGE java
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Connection conn = new OracleDriver().defaultConnection();
String[] arrSentences = sent.getsentences ( CLOBtoString (text) );
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I am trying to do something similar but seems like getting stuck at registerOutParameter for this.
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CREATE OR REPLACE
type APL_CCAM9.VARCHARARRAY as table of VARCHAR2(100)
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public static ARRAY fetchData (ARRAY originAreaCds, ARRAY serviceCds, ARRAY vvpcs) {
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String[] result = new String [2];
result[0] = "Foo";
result[1] = "Foo1";
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connection.commit ();
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try {
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} catch (SQLException exp) {
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Passing array from JS to method of applet

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Exception:
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     at sun.plugin.com.DispatchImpl.invokeImpl(Unknown Source)
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java.lang.Exception: java.lang.Exception: setTest{0} :no such method exists
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     at java.security.AccessController.doPrivileged(Native Method)
     at sun.plugin.com.DispatchImpl.invoke(Unknown Source)
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In the sub report:
whileprintingrecords;
shared stringvar str;
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whileprintingrecords;
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stringvar array arr;
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join(arr,",")
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I had fetched record from my database to my servlet and passed it to bean.
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leozeo write: I had fetched record from my database to my servlet and passed it to bean.
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Pass arrays from Java to PL/SQL procedure.

Hi All,
Can some body give an example, where an array of strings is passed from java to a PL/SQL procedure.
Any help in this regard is appreciated.
Thanks,
Prashant

Kiran Kumar Gunda wrote:
I would want to use Oracle provided (Oracle Extensions) API to pass arrays to PL/SQL
procedure from Java. I am using weblogic connection pool, but the 'createDescriptor'
method donot allow Pooled connection. So I have taken Physical Connection by casting
to 'WLConnection'. Now, weblogic strongly suggest NOT to use this,as pooling capabilities
will be disabled.
But by setting RemoveInfectedConnectionsEnabled to false, we can ask weblogic
to return the Physical Connection to Pool. I have tested this with the attached
code. I DON'T find any issue.Good. The only real risk to obtaining the physical connection is retaining and
using it beyond the current thread execution. Your code looks OK. The only thing
I'd suggest is to add to the finally block. I would put a separate try-catch-ignore
block around every action in the finally, so if one fails, the others are still
done.
As long as you're writing good JDBC like that, there is no risk to telling the
pool to trust the code, by setting RemoveInfectedConnectionsEnabled to false.
That way you'll retain all the performance of the pools.
Joe
>
I want your opinion in this, so that I will be confident in using this feature
in our application.
Note : Please look at the sample code that I am using. I AM NOT GOING TO USE PHYSICAL
CONNECTIONS for normal operations. I will use Physical Connection only when I
want to pass Arrays to Oracle.
Thanks
Kiran

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Hi,
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then i call a method. This method have an object. How i can pass this object to a JSP Page so that
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Thanks
Edited by: user9293762 on Sep 3, 2010 2:33 AM

Hi user9293762,
To pass the BPM object to the JSP page, please follow the below steps:
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Passing array from one servlet to other

I got values from jsp to servlet and i am storing them to
String[] test = req.getParameterValues("testOne");
Now i need to use redirect
req.sendRedirect("/servlet/myapp?test="+test);
Not working. Why?

String[] test = req.getParameterValues("testOne");This code creates a String array with 0 or more entries depending on the number of "testOne=" parameters in the request.
req.sendRedirect("/servlet/myapp?test="+test);The +test results in test.toString() on an array which will be some sort of class description, not the values in test.
What are you trying to do here? Do you want the servlet to process the same request, in which case why not use forward instead of reDirect?
If you must use reDirect and want to pass the test array to the servlet, you could add it as a session attribute. If you really insist on using the param string, try:
String s = "/servlet/myapp?";
for (int k = 0; k < test.length; k++) {
s += "test=" + test[k];
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Passing values from HTML to JSP method,

Hello:
I am starting to wonder if what I am doing will ever work...
Ok, I am trying to avoid javascript. I have a drop-down list named "year" and I wish to call a JSP method that is defined/declared in the same JSP.
First, I want to pass the chosen option to the method and then store the name/value in a global variable.
Second, depending on what the user selects, I will get values from an array defined/initialized on page load AND display those values in another drop-down list.
As a test, and until now, I have done this. I am not passing anything yet, I just wanted to test this "fuzzy logic" I am having:
<%!
String currentYear;
private void showDaysInDDList()
currentYear = request.getparameter("year");
%>
Then on the HTML part of the page I have a drop-down list:
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="style.css">
</head>
<body bgcolor="ffffcc">
<form method="POST" name="form1" action="left.jsp">
<select name="year" onchange="<%=showDaysInDDList()%>">
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     </select>
I am getting the following errors:
An error occurred at line: 105 in the jsp file: /p1/left.jsp
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....and regarding to the onchange="<%=showDaysInDDList()%>"> part I am getting the following:
An error occurred at line: 204 in the jsp file: /p1/left.jsp
The method print(boolean) in the type JspWriter is not applicable for the arguments (void)
In the action="left.jsp", left.jsp is the same page where the drop-down list and the method is. I am not sure if that is another error.
I will continue here with my coffee ... any help will be extremely appreciated !!..
I'll have to shut down my "asp.net mind" for a while..
I'll reply later,
MMS

Ok, this is a bit messy here. I don't know how much you've read up on JSP but you seem confused about some fundamentals to me. However, you mention that you've worked with ASP .net so I'm going to assume you do have some notion of how thing should work in general.
1. JSP is on the server-side and events like onchange that you've used take place on the client-side after the JSP/ servlet code has run and produced the HTML page. So calling your showDaysInDDList() will not work.
2. Are you sure you know how the declaration tags ( <%! %> ) work? When you normally write JSP code without these tags, all that code gets compiled into the service method of the corresponding servlet that the JSP gets turned into. But, you can declare your own methods and variables outside the service method by using these tags.
So what you're effectively doing is declaring
private String/ void showDaysInDDList()
}and followed by your usual _jspService()
public void _jspService(HttpServletRequest request,
   HttpServletResponse response)
     throws IOException, ServletException
}Now it may be clear, that the request object is not available in the showDaysInDDList() method by default; you'll either have to declare it ( not sure if it's good programming practice or not ) or pass the required parameters in the call.
3. Like you seem to have realized, that error about the printing of booleans was related to the return type of your method because <%= %> translates to out.println(); and since the argument was the method call, the return value was to be printed which here was a void ( not sure why it says boolean though :D ).
Read up on this introduction to JSPs http://java.sun.com/developer/onlineTraining/JSPIntro/contents.html, seems to be pretty good and covers everything in quick, short chunks.
Hope this helps.

Passing value from JApplet to Jsp page

Hello,
How can i pass a value that is entered in a JTextArea in a JApplet and fetch the entered value from JTextArea and display it in a JSP page.
It would be kindful if someone could help me with this problem.
Regards
Sanam

hello,
Thanks for ur reply,
Sorry to say that i did not understand where to implement ur code in my code.
Below is my code could u plz tell me where do i put in ur code.
My code works fine u can compile it.
javac *.java;
appletviewer BIA.java
Can u plz tell the JSP code.
It would be very kindful if u could please help me.
Thank you
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import java.awt.event.*;
import java.awt.geom.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.*;
import javax.imageio.ImageIO;
import javax.swing.*;
import java.util.Vector;
import java.applet.*;
import java.awt.image.*;
import javax.swing.*;
import javax.swing.event.*;
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</applet>
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//******************* BIAP.java*************
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.*;
import javax.imageio.ImageIO;
import javax.swing.*;
import java.util.Vector;
import java.applet.*;
import java.awt.image.*;
import javax.swing.*;
import javax.swing.event.*;
import java.lang.reflect.Field;
class BIAP extends JPanel
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          super.paintComponent(g);
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          int imageWidth = image.getWidth();
          int imageHeight = image.getHeight();
          int x = (w - imageWidth)/2;
          int y = (h - imageHeight)/2;
          g2.drawImage(image, x, y, this);
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          String fileName = "Terragen___Losing_Grip_by_Blackheart6004.jpg";
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//************************** TB*********************
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.*;
import javax.imageio.ImageIO;
import javax.swing.*;
import java.util.Vector;
import java.applet.*;
import java.awt.image.*;
import javax.swing.*;
import javax.swing.event.*;
class TB extends JPanel
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                         //panel.fileSave();
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How do i pass parameters from j2me to jsp?plz help

hi everyone...
i m doing my final year project
can anyone plz tell me how to pass parameters like user name,password,etc.. from a j2me midlet to a jsp page running in tomcat server?
i tried passing parameters in http connection through url as:
String url="http://localhost:8080/example/test.jsp?name=abc";
i need this info urgently as i am not able to proceed with my project... plz help
any suggestions or references would be appreciated...
thank u...
regards,
Rinzi

JHD
hi.
you have written in URL i sperfectly right but if this is also not complete one.
i.e url = "http://localhost:8080/dir/xxx.jsp?userName=jasmit&password=vala"
now when u establishing connection i.e
HttpConnection con = (HttpConnection) Connector.open(url,3);
this will work as an declaration but if u want to send that parameter for that you have to get response from the server and that time only original connection is going to establish i.e
when u r writting
int responseCode = con.getResponseCode();
if(reponseCode == 200)
then ur parameter were passed to jsp page.
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String userName = request.getParameter("userName").toString();
String password = request.getParameter("password").toString();
i hope this might solve ur problem.
Regards,
Jasmit vala
[email protected]

Help needed: clarifying the use of beans to pass data from database to JSP

Hi everyone,
I am sure you all get fed up with being asked this question as I can see it is asked a lot when googled, but the answers given have not cleared things up for me.
Anyway, I have a JSP page that contains a text box, submit button and a select box of size 10. The user enters a search string and the form submits the data and reloads the same page. From the code you can see the Name property of the bean is set.
<jsp:useBean id="vtm" class="FinalYearProject.Types.VtmType" scope="page" />
<jsp:setProperty name="vtm" property="NM" value="${param.NM}" />I then need to be able to use that name to query a postgresql database. I have a JDBCConnector class with the method:
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        for(int i = 0; i < names.length; i++) {
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My question really is what is the best way for me to take the name, get the resultset and pass back the VtmType objects to the jsp so that I can populate my select box, and where should each part be handled i.e. the JSP page, the VtmType, the JDBCConnector.
I may be going about it completely the wrong way and using beans incorrectly, but I just cant seem to get my head around the problem.
Any help would be much appreciated,
Thanks.

Hi,
Thanks for the help, I actually found some literature about the JSP Model 2 and realised that was what I needed to do. I have now re-written everything and it has made my life a lot eaiser, typically this was before I checked back on this post though!
Anyway, I now have JSP pages requesting Servlets which create beans and call classes that access the database. The servlet then forwards the beans and where necessary a small of html to another JSP. Like you have suggested.
One problem I have now however, is that the user needs to be logged in to access some of the pages. An error page with the correct message is displayed to the user when it is processed via the servlet.
//Servlet detects an error
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gotoPage("/loginError.jsp", request, response);
//JSP detects which errorMsg to display
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<c:if test="${empty user.username}">
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</c:if>The problem with this is that the only way I can see of checking the errorMsg type is with:
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Passing Array from Class to JSP

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