JavaRanch JSP

Need help for Displaying in jsp

Wed, 14 May 2008 07:03:14 MDT

Hello all Appfusers,

I am practically a newbie in this field.

I just got an error given below:

Error:

code:


 
WARN [btpool0-1] LookupUtil.<init>(99) | Exception: [.LookupUtil] Error looking up property "username" in object type "[Ljava.lang.Object;". Cause: Unknown property 'username'
java.lang.NoSuchMethodException: Unknown property 'username'
 at org.apache.commons.beanutils.PropertyUtilsBean.getSimpleProperty(PropertyUtilsBean.java:1122)
 at org.apache.commons.beanutils.PropertyUtils.getSimpleProperty(PropertyUtils.java:408)
 at org.displaytag.util.LookupUtil.getProperty(LookupUtil.java:271)
 at org....

Using Colour chooser and Font Chooser

Wed, 14 May 2008 04:35:14 MDT

Hi Folks,

I'm new to JSP.
I want to display Java Color chooser on JSP page on click of button.
Also I want to display Font chooser on click of button.
So how to do that? :banghead:

Thanks,
Rahul :beerchug:

doubts in Login page

Wed, 14 May 2008 02:11:13 MDT

Hi
This is a jsp login page .I have some doubts/problems in highlighted code in this page.Please anybody give solutions to my questions

Question 1.In input type element ,what is the use of id and value attributes?ex. <input type="text" name="user_id" id="user_id" value="" />

Question 2.What is the use of below 2 lines in this page?Why only first one is not sufficient and if sufficient then in what situation or condition we use 2nd line also?
<input type ="submit" name="submit" id="submit" value="Change Password" />
<input type="hidden" name="action_chngpswd" id="action_chngpswd" value="hrms_change_pswd_submit"/></td></tr>

Question 3.What is ....

HTML hyperlink problem

Wed, 14 May 2008 00:17:13 MDT

Hey everyone,

I am building a simple web page in JSP with an embedded java applet that runs an application (the page does not contain any JSP code *yet*, but is saved as a JSP file).

I am using Apache Tomcat 5.5 to render the page. On this page, I tried linking some local files on my workstation for testing purposes. Some samples are shown below:

<a href="C:\Program%20Files\Apache%20Software%20Foundation\Tomcat%205.5\webapps\GSDCRBTMindMapTest\GSDC_PolicyManual.mht"> Test </a>
<a href="C:\gsdcrbtframework.jpg"> Test 2 </a>

When I access the page through the page by typing localhost:8080/<appname> into my browser, these links don't work. Clicking on them does ...

problem in request.getparameter

Wed, 14 May 2008 00:07:13 MDT

I have one table with field

EMP_ID varchar(10) latin1_swedish_ci PRI

I am passing the value of emp_id from one page to another.In the second page using request.getParameter i am receiving the value
first page

code:


 out.println("<td><a href = viewEmp.jsp?id=" + id + " /a>View</td>");

in second page

code:


String tempQuery ="Select * from GSIS_EMP_MASTER where EMP_ID = "+ request.getParameter("id");

Above are working fine if the EMP_ID is integer.If it is not integer like 3sd or 1a... i am getting error of

Exception in co...

How to make doPost as default service

Tue, 13 May 2008 23:31:13 MDT
Hi,

I have a servlet and user directly can access the server something like :

http://localhost:8080/doSomeThing.do (http://localhost:8080/doSomeThing.do)

where doSomeThing.do is the URL pattern.

My web server is tomcat 6.

Now by default the http method here is Get and my doGet is getting called.

If i use RequestDispatcher's forward method to forward the request to any other Servlet and JSP then also its a GET and not POST.

Can i force it to call POST instead of GET?

Thanks.

Implicit methods

Tue, 13 May 2008 23:23:13 MDT
Hi,

Do we have any Implicit methods in Java?

If we have please list them and explain in brief.

Thanks,
Krishna

scope attributes forwarding problem

Tue, 13 May 2008 23:07:13 MDT
Hi all,

My codes are as follows:

page1.jsp

code:

<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jstl/fmt" %>
<%@ taglib prefix="ora" uri="orataglib" %>
<%@ page import="java.lang.*, java.util.*, java.text.* " %>
<%@ page language="java" contentType="text/html" %>
<html>
<head>
<title>toVerisign.jsp 1a-R1</title>
</head>
<body bgcolor="#FFFFFF" text="#000000" link="#006060" vlink="#006060">
<%
String firstName = (String)request.getAttribute("firstName");
System.out.println("firstN...

Custom Tag

Tue, 13 May 2008 21:51:13 MDT
My question is about when one creates a custom tag. If the <rtexprvalue> is set to true for a particular attribute and you send an object via EL "${sumthing}" you must use ExpressionEvaluatorManager.evaluate(blah, blah...) inside the doTag(). My question is why. Just looking for a plain english answer. Thanks for any interest.

jstl tags

Tue, 13 May 2008 08:51:11 MDT
Hi all.........

I have a table "URL" table (list of forwarding urls) in the database. is it possible to use the following codes in the jsps.....

code:

<sql:query var="URLVAR1">
SELECT URLvalue FROM URLTABLE where URLvariable="somewhere"
</sql:query>
<c:forEach var="row" items="${URLVAR1.rows}">
<c:set var="somewhere" value="${row.URLvalue}" scope="request">
</c:set>
</c:forEach>

....
....
....

<form name="frm<%=iter%>" action="${somewhere}" method="post">
....
....

My URLTABLE is ...

Regular JSP vs. JSP Document (XML format)

Tue, 13 May 2008 04:27:11 MDT
Hi Ranchers,

As you know JSP in XML format appeared in JSP 1.2, meaning long time ago. And I would like to ask a quick question:
If your manager ask you : "Why don't you use JSP Document instead of standard JSP?", how will you answer(justify to) him?

So far, I just get some answers:
* JSP documents can be passed directly to the container.
* The XML view of the JSP document can be used to validate the JSP document against a description of the set of valid pages.
* JSP documents can be manipulated via XML-aware tools.
* An XML transformation, like XSLT, can be used to generate a JSP document from a textual representation.

These reasons seem to be not so strong, huh!<...

How to forward a page from catch block

Tue, 13 May 2008 01:03:11 MDT
Hi all,

Here is my requirement:

<%
try{

String str = (String) session.getAttribute("hello");
if(str==null || str!="hello" || str.length() == 0 ) {
%>
<jsp:forward page="../failure.jsp"/>
<%
}
}

catch(NullPointerException e){
%>
<jsp:forward page="../failure.jsp"/>
<%
}
%>

The hello session variable have set to "hello" initially.

I have placed this code in one jsp file.

Im getting error at catch block, I dont know whether this is correct way or not, Please help me out.

My requirem...

not opening a page in browser

Mon, 12 May 2008 22:25:10 MDT
When i send request to jsp page using forward, it is not opening page in browser. I am calling this page from servlet.

Using debug, i pointed out that it is calling a jsp page, and not giving any exception on server console but it is not opening in browser.

Anybody can give possible reason for that or how to solve this problem?

Thanks in advance...........

how to get values from table in jsp

Mon, 12 May 2008 16:41:08 MDT
Hi,
I have a table in jsp with dynamically generated rows and coloumns.My first column is of check boxes,second is of some data,third of data and so on.Now when I select check boxes either 1 or more than 1 I need to get those values of that rows, from table in my jsp.So please help me in getting these values.

Thanks in advance..

Data share among JSPs among multiple J2EE apps with different context root

Mon, 12 May 2008 15:41:08 MDT
What are some of the best practices for sharing data in the GUI (JSP) level among different J2EE apps using different context root using WebSphere 5.1.x.

Portal would be a potential solution. But if Portal cannot be utilized, what are different approaches?

It is a lot easier to share data in business tier. But interested in knowing what can we do in GUI tier for doata interchange among multiple apps?

I am not typically fond of placing multiple apps under the webcontent and interchanging data.

Error in appearance

Mon, 12 May 2008 14:01:08 MDT
i am getting the following error in internet explorer "???" and in firefox "��"

on the top of the window
i think its due to the error in code.
but all my functions are working fine

can any one tell me what of type of error causes this

Thanks in advance

nested tags

Mon, 12 May 2008 12:29:08 MDT
Hello,

I am trying to understand how nested tags work for both classic and simple tags. This is my jsp snippet:

<mine:Classic>
<mine:Simple />
</mine:Classic>

where Classic represents a Classic tag and Simple a Simple one.

The code snippet for the Classic tag is as follows:

public int doStartTag() throws JspException {
nestedLevel = 0;
Tag parent = getParent();
try{
while(parent!=null){
parent = parent.getParent();
nestedLevel++;}
write.println(nestedLevel);
}catch(IOException ie){
throw new JspException("Exception " + ie);
}
return EVAL_BODY_INCLUDE;
}

The...

Reading mixed chars (characters from various charset) from one single form.

Mon, 12 May 2008 11:09:08 MDT
Hi experts,

I have a screen where user can supply any character in a textarea. A char may be ascii char or some japanese char.
On the server side I am trying to read input string by request.getParameter() method; And then I am setting this string into a preparedstatement to store value in database.
I have mentioned charset of html page as utf-8. Also, My database has been configured to store utf encode chars (And While setting up the connection I am setting the correct encoding UTF to specify the client encoding, results encoding etc)

When I read back the string on the screen. I do not see what I entered. However ascii characters are being read back from database and being shown on screen properly.

pagination in jsp

Mon, 12 May 2008 07:43:07 MDT
Hi All,
i am new in jsp. I want to give paginaiton using jsp in my application. I am able to show the records in browser. I want to display 5 records per page. I want to display them in google style like:
<<1 2 3 >>next

I am attatching my code herewith:

<%@ page import="java.sql.*" %>
<% String driverClass="com.mysql.jdbc.Driver";
String url="jdbc:mysql://localhost:3306/Test";
String userName="root";
String password="";
String user="";
String pword="";
Class.forName(driverClass);
Connection con=DriverManager.getConnection(url,userName,password);
out.println("Connection is established");
//String query="select * from userDetails ";
...

Code Review tool for JSP

Mon, 12 May 2008 07:17:07 MDT
I want code review tool for jsp of open source. Please give me the information.

jsp logout problem

Mon, 12 May 2008 03:39:07 MDT
hi all,
when i click on my logout link on my home page i call a logout.jsp page
<a href="<%=request.getContextPath()%>"+"/logout.jsp>" using this tag but when i click on the browser back button it takes me back to the previous which is not valid in my logout.jsp i remove the attributes and invalidated the session then to its not working. any ideas,hints all welcomed. thank you

JSP and Servlet specification

Mon, 12 May 2008 00:35:06 MDT
Hi

Where can i download jsp specification 2.1 and servlet specification 2.5 pdf release.

Implicit Objects

Sun, 11 May 2008 08:11:04 MDT
Hello,
Please explain this in brief:

We generally call request,responce,page,application,out etc these as Implicit Objects.

I want to know what are Implicit variables and implicit methods.

Please replay.
Thanks,
Krishna

How to use the Java variable inside the Javascript function

Sun, 11 May 2008 07:57:04 MDT
Hi All,
I wanted to know how can we use the variable declared and defined in Java inside the javascript function?

Suggestion required....

Example
code:

<java>
java.lang.String sMessage= " ABCD";
</java>
<javascript>
function useVariable()
{
var tempValue = sMessage;
}

</javascript>

What is the stylesheet and what is its use in jsp

Sun, 11 May 2008 02:49:04 MDT
Hi
Could anybody let me know What is the stylesheet and what is its use in jsp and why we use it?

Uploading images with jsp

Sun, 11 May 2008 02:33:03 MDT
Hi,
I trying to a HTML file which will let me choose 3 file and upload all of them at once.

There are also some text boxes.
<FORM METHOD=POST ENCTYPE="multipart/form-data" ACTION="FileUpload.jsp">
File to upload: <INPUT TYPE=FILE NAME="upfile1"><BR>
File to upload: <INPUT TYPE=FILE NAME="upfile2"><BR>
File to upload: <INPUT TYPE=FILE NAME="upfile3"><BR>
<INPUT TYPE=SUBMIT VALUE="Submit">

When subit is clicked the files should be stored on the server and the values in the text boxes should go to the db.I got the db part working[the easiest :)]But I have no idea how to pass multiple images at once.

hOW CAN I handle this in upload....

Authentication with LDAP

Sun, 11 May 2008 01:45:03 MDT
i want to know how to automate users authentication from ldap data store rather than from the server realm?i know how to use ldap(openldap) and ofcourse the JNDI API but is there any mapping tool in the sun application server to the ldap DIT initial context and the searching controls , filters and so on to ease this process?

problem in using context param for storing database connection information

Sat, 10 May 2008 11:27:02 MDT
Hello Friends,
I am new to struts & jsp.I am developing a project in struts.I have 1 jsp page called editProfile.jsp.On submitting this page it will call 1 action class.The action class in turn will call the Plain old java class where I have written the logic for updating User Profile.

I have created context-param in web.xml for database connection information like dbURL , dbUserName , dbPassword , jdbcDriver.Now I want to use these connection information in my Business logic(Plain Old Java Class).As we can use context parameter only in jsp & servlets , I am setting the variables of my business logic class with these context param in jsp itself.

now when I am calling the updateProfile method of Business logic cl...

clear body tag question

Sat, 10 May 2008 09:13:01 MDT
Hi,
I was searching for some tag examples and I see that sometimes the clearBody method of the BodyContent object is used like this:
code:

public int doAfterBody() throws JspTagException {
BodyContent body = getBodyContent();
try {
BodyContent bc = getBodyContent();
String body = bc.getString();
bc.clearBody();
getPreviousOut().print(process(body));
} catch(Exception e) {
throw new JspTagException("Error in tag doAfterBody " + e);
}
return SKIP_BODY;
}

If the tag instance is reused by the container, this is going to have a side effect for the next requ...

JSP can't find bean?

Sat, 10 May 2008 05:47:01 MDT
I am working with an older version of ServletExec 3.1 (yes, very old, but it is what my production app uses so that is why I am working with it).

Am trying to get a JSP example from the book "Inside Servlets, 2nd Edition" to work. It uses a Java bean class (EmployeeBean.class) and no matter what I do so far I can't seem to get it to find the EmployeeBean.class. Always get an error like this when try to access the JSP that uses the bean:

/home/lkennon/servletexec/ServletExecAS/se-red1/ServletExecData/default/is/pagecompile/_ch18/_param_xjsp.java:26: Class pagecompile._ch18.EmployeeBean not found.
EmployeeBean employee = (EmployeeBean)pageContext.getAttribute( "employee" );

I have tried the fo...

Any books recommended

Fri, 9 May 2008 21:39:00 MDT
hello,i want to learn jsp,any classic books for a beginner?it's better easy to go on with.

custom tags specification

Fri, 9 May 2008 11:34:59 MDT
Hi,
Can someone tell me the url where I can download the specification that describes custom tags ?

Thank you :)

Resubmitting Refresh Problem even [JAVARANCH] also faces this problem

Fri, 9 May 2008 07:12:58 MDT
Dear friends and respective Owners

How to avoid form resubmission when REFRESH clicked.
<form name="myForm" method="POST" action="Mt.do">
......
.....
<input type="hidden" value="EVALUATE_TEST" name="action">
<input type="submit" value="EVALUATE_TEST">
</form>

when i click the refresh button, the form resubmit the hidden variables..

Even Javaranch fails

when i refresh the forgot password page it resubmits the page,
i got 5 respond pages to my mail

how to solve this..............

JavaScript in JSP

Fri, 9 May 2008 06:28:58 MDT
Hi,

I have a jsp page which I had a form to be fill out.Now I have created a javascript file where i have some functions. How can I import this javascript into my jsp in order to use it.
I have write this: <%@ include file="Scripts/option.js" %> but it doesn't work

Help...

JSTL looping problem

Fri, 9 May 2008 02:42:58 MDT
Have some problem with JSTL forEach with collections.
I can not understand what the problem really is. When sending a collection over to the JSP I get an exception when I try to loop through it with an c:forEach.

I have tried with both JSTL 1.1.2 JSP 2.0 and JSTL 1.2 and JSP 2.1 with same result.

I am running in a Jetty server. I have been developing the application using IBM RAD and WebSphere and have recently moved som code over the Jetty version of the same application. It was then the problem occured. I can not go back since the jetty version of the application is not in SVN nor does I have a local backup. So I have to figure out what the problem is.

All the information the exception message give...

Window's Domain level authentication for JSP Pages

Fri, 9 May 2008 00:08:57 MDT
Hi all,
Is this possible to put window's Domain level authentication to JSP page.
For eg. if a User want to access a jsp page say "http://localhost:8080/test/index.jsp" and if the server which serves this page resides on Domain say "synapse" then the user gets a window login page for the domain "synapse".so the user can only access this page if he has account for given domain.

I know microsoft IIS Server does provide window level authentication for *.aspx pages, but no idea whether J2ee container leverages us this functionality or not.

Please suggest.

Thanks and Regards
Amit

Data type in JSTL

Thu, 8 May 2008 10:40:55 MDT
Hi,

How to check whether the object has numeric value or String value in JSTL. I looked at functions tag library but i dont see any one.
Any help is appreciated.

regards
sudha

Looking for a way to do load/ performance test and/ or security test for my web appli

Thu, 8 May 2008 09:34:55 MDT
I'm looking for a way to do load/ performance test and/ or security test for my web application. I'm wondering if anyone has experience in this and could advise some good tools that I can use.
I'm looking for open source or freeware if possible.

Thanks in advance for the help! :)

Jsp page export to Word Document

Thu, 8 May 2008 08:50:55 MDT
Hi...again

How can I export a jsp page to word document. I have created an XML file of this page.Next...what can I do or I can't. Is there any other way to do it?Any reference?

Please help me...
Thanks

Submit from a JSP page based on a choice

Thu, 8 May 2008 03:40:55 MDT
Hi,

I have a JSP page where I have given two choices to the user.
Now based on the selected choice - I have to submit the form to a servlet.

To be specific there are two radio buttons -
if user select radio button 1 - he should be redirected to URl abc
if user select radio button 2 - he should be redirected to URl xyz

could anybody please guide me what approach I should take
Thanks

Session expired

Thu, 8 May 2008 01:54:55 MDT
If session is expired and the user clicks submit button, he should be transfer to a page.
Is it possible

Thanks in advance

about accesing js function in JSP

Thu, 8 May 2008 00:22:54 MDT
HI,
i have query regarding including js funtion in jsp. the problem is i have one jsp say
main.jsp , i am including another jsp
say include1.jsp , in this include1.jsp i am calling js funtion

<script language="javascript" src="scripts/jsFuntion.js"></script>

the directory sructure is as follows

root
|--folder1
|_ ____ scripts/
|_______includedJSp/ include1.jsp

|____folder2/jsp/main.jsp

so probelm is when i includes include1.sjp the js funtion is not getting called

it takes its path as folder2/scripts/ instead of folder1/scripts

any idea about this

thanks in advance

How to submit Jsp page

Wed, 7 May 2008 22:52:55 MDT
There is one menu in my page. I have created menu using <DEV> grouping tag.

As per form action, action servlet is being called by controller.

Now i want to set form action in bean using jsp:setproperty on onclick event of that menu item. At the same time i want to submit my page also.

I dont have idea how to do two things at same time. Yes using java script we can write the method and can call that function, but we cant set property in javascript using jsp:setproperty

Please give me some idea........

Thanks in advance....................

how to retrieve "c#" from response

Wed, 7 May 2008 06:40:52 MDT
hi,
In jsp page i have a link which will pass a parameter "skill" and its value is "c#". when i am retrieving that skill from response using request.getParameter("skill"), i am only getting "c" not c#.

how can i retrieving "c#" from response.
please help me..

To store multiple data in ResultSet

Wed, 7 May 2008 04:04:52 MDT
HI All,

Can any body help me to say what is process to store multiple data with ResultSet.

I want to write a code that shows multiple rows, selected by the previous jsp page, but i'm fail. It shows only one row in current page whether i select multiple rows in previous page.

My code is following: -

<% PreparedStatement ps=null;
Connection con=null;
ResultSet rs=null;
int m=0;
Class.forName("oracle.jdbc.driver.OracleDriver");
con=DriverManager.getConnection("jdbc:oracle:thin:@172.16.90.139:1531:PROD","apps","apps");
String[] kys= request.getParameterValues("pkey");

ps=con.prepareStatement("SELECT distinct a.vendor_id,a.vendor_name,b.pan_...

jsp control problem

Tue, 6 May 2008 22:14:51 MDT
In our project we are Calling java class from a JSP page through Shellscript.Every thing is working fine. but the problem is getting the control back... our requirement is when user clicks process button in JSP we are calling one shellscript and code in shell script calling java class.(ie classname ).But once the user clicks on process button we need to call the Shell script and control should come back to the JSP ....but currently we are receving control after processing of java file....

Please let me know how to get control back to my JSP (immediate call of Shellscript and java program should run in background)

Thanks in advance
Aravind

Problem in downloading file from server to client

Tue, 6 May 2008 20:20:51 MDT
Hi friends

In my program when i try to download file from the server to client i am getting the file which is the output of currently running jsp file pls help

below is the code
code:

try {
// path where the file is stord
//String idocPath = config.getServletContext().getInitParameter("http://203.345.888.81/var/tomcat/webapps/ROOT/invoiceline/");
String idocPath ="http://203.345.888.81/var/tomcat/webapps/ROOT/invoiceline/";
out.println("fle path idocpath"+idocPath+"<br>");
//if (request.getParameter("fileName") != null) {
String fileName ="out_invoiceline.txt";

{
String filePath = idocPath + " " +fileName;
out.println("file...

Preventing page refresh in jsp pages

Tue, 6 May 2008 14:36:50 MDT
Hi All,

I generated a web application using jsp related to online shopping. After submitting a record addition, if I press refresh button, again it adds the same information as another record to the database. Is there any clear way to prevent page refresh in jsp pages?

Regards,
Ramesh Kangamuthu

how to get servletcontext attribute in jsp

Tue, 6 May 2008 09:00:49 MDT
hi guys
i have set attribute in servletcontext
but when i tried to get that attribute in jsp iam not able to retrive

in my servlet i use the following code set the servletcontext parameter

code:
Collection cTree = pProcessor.loadTree();
getServlet().getServletContext().setAttribute("cTree",cTree);

also iam able to get this parameter in other servlet

the following is the code used in my jsp

code:

<%Collection c=Application.getAttribute("cTree"); %>

looking for your replies
amir

runtime encoding probolem

Tue, 6 May 2008 01:00:48 MDT
Hi folks
In my jsp iam going to populate special characters (<>(*&), it is
working fine, but if i substring that one to certain limit(for ex:10)
for example if i give like --> &<> to populate in jsp it is
taking as --> &<> and it is going to substring and it is
taking upto--> &<&
but the xml parser not able to parse and thrown NotWellFormed exception
how can i overcome this one.
Advance appreciation for any ideas..

-Naresh :banghead: