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Data Alignment

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posted 16 years ago

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Hi Ranchers
I'm displaying data using JSTL and JSP by fetching data from the database(back-end, Servlets and Beans). I'm able to display the data successfully but the problem is the alignment of the data. Here's a piece of code from JSP:

Now the data is getting displayed vertically while the table is horizontal. I mean, the headers of the table are Name and Age and the fetched from the db is getting displayed under the Name header only.. i.e. Under Name header itself Age(along with Name) is also getting displayed. I want Name to be displayed under Name header and Age to be displayed under Age.

I know that it is a simple task in HTML but have no idea how to display the same using JSTL. This may be a silly question but any help in this regards would be much appreciated.

Thanks & Regards
Swapna Gouri
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Bear Bibeault

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posted 16 years ago

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All that matters to the browser is the HTML that is sent to it. Do a View Source at the browser to see what's being sent. Is it correct?

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Bear Bibeault

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posted 16 years ago

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Hint: you are only creating one <td> so how could you expect two columns?

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Swapna Gouri Kalanidhi

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posted 16 years ago

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Hi Bear
The View Source seems to be weird. Here's the View Source:

<html><head><title>Apache Tomcat/6.0.18 - Error report</title><style></style> </head><body><h1>HTTP Status 405 - HTTP method GET is not supported by this URL</h1><HR size="1" ><p><b>type</b> Status report</p><p><b>message</b> <u>HTTP method GET is not supported by this URL</u></p><p><b>description</b> <u>The specified HTTP method is not allowed for the requested resource (HTTP method GET is not supported by this URL).</u></p><HR size="1" ><h3>Apache Tomcat/6.0.18</h3></body></html>

Is my code incorrect ?
And I'm fetching data using a loop, so how can I use 2 <td> ? If I use it twice then both the fields are displaying twice.

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Swapna Gouri
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Seetharaman Venkatasamy

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posted 16 years ago

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well, How you set the Name and Age in request scope(to display that on front end ). can you post the code?

Seetharaman Venkatasamy

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posted 16 years ago

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Anyway i tell you the way,

in servlet (backend):

set the bean value into List like below

in jsp display like below:

And ,Swapna i encourage you to use jstl

Hope this helps

Bauke Scholtz

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posted 16 years ago

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Swapna Gouri Kalanidhi wrote:Hi Bear
The View Source seems to be weird. Here's the View Source:
<html><head><title>Apache Tomcat/6.0.18 - Error report</title><style></style> </head><body><h1>HTTP Status 405 - HTTP method GET is not supported by this URL</h1><HR size="1" ><p><b>type</b> Status report</p><p><b>message</b> <u>HTTP method GET is not supported by this URL</u></p><p><b>description</b> <u>The specified HTTP method is not allowed for the requested resource (HTTP method GET is not supported by this URL).</u></p><HR size="1" ><h3>Apache Tomcat/6.0.18</h3></body></html>

Are you serious? That's just the source of an ordinary HTTP 405 error.

Swapna Gouri Kalanidhi

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posted 16 years ago

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@ SeethaRaman
My code is almost similar to the one you have posted. The only difference is the data being fetched from the database. Here's the code:

This is a code snippet from the bean class. And yes, I have setters and getters too...

@ Bauke
Yes, I'm dead serious, that's what is getting displayed as the page source on the browser. But why is it displaying that way? Is it a problem with my code or with my browser? I'm really confused.

:roll:

Thanks & Regards
Swapna Gouri
I "try", I "catch" and "finally" WIN !!!

Swapna Gouri Kalanidhi

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@Bauke
If that's the source for 404 error, then how am I able to view the desired output? This is even more confusing.

Thanks & Regards
Swapna Gouri
I "try", I "catch" and "finally" WIN !!!

Bauke Scholtz

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posted 16 years ago

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Swapna Gouri Kalanidhi wrote:@Bauke
If that's the source for 404 error, then how am I able to view the desired output? This is even more confusing.

Look, it's a 405, not a 404. Look like that your webbrowser fires a brand new GET request on view source of a POST. Try another webbrowser.

That headbanging isn't needed dude. That smiley annoys me.

Vadim Vararu

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posted 16 years ago

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The first problem is in you first code snippet. You have two columns in the upper row and just one in the bottom row. After the next HTML result you've given us, we can conclude that you have another problem that has nothing to do with columns and even with HTML markup.

P.S. Tomcat generates an extremely ugly error page html markup

If you think you've done too much, usually it means you've done too few.

Swapna Gouri Kalanidhi

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@ Bauke
Yes, that seems to be a problem with my browser. I was using Google Chrome and when I tried with IE, I faced no problems. I'm able to view the same HTML code that I have written.
And sorry, for that smiley that annoyed you.

@ Vadim
Yes, after viewing the page source, I understood where the problem is. Will modify the code and get back if I have any doubts.

Thanks all for helping me...!

Thanks & Regards
Swapna Gouri
I "try", I "catch" and "finally" WIN !!!

Bauke Scholtz

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Yes, after viewing the page source, I understood where the problem is. Will modify the code and get back if I have any doubts.

Thanks all for helping me...!

You're welcome.

Swapna Gouri Kalanidhi

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posted 16 years ago

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This time I'm facing a different error if I try to access the attributes individually. Here's what I'm doing exactly.

Bean class:

The other part of the code was already posted by me, refer the method getCSVDData() in the thread above.

Servlet class:

Now I have modified the JSP a little bit:

Now when I use value.dispatchDate, am getting this HTTP 500 error:

HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: An exception occurred processing JSP page /CSVD.jsp at line 40

37: 	
38: 	<c:forEach var = "value" items="${data}">
39: 	<tr>
40: 		<td>${value.DispatchDate}</td>
41: 		<td>${value.Date}</td> 
42: 	</tr>
43: 	
Stacktrace:
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:505)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	com.gox.servlet.CSVD.doPost(CSVD.java:28)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
root cause

javax.el.PropertyNotFoundException: Property 'DispatchDate' not found on type java.lang.String
	javax.el.BeanELResolver$BeanProperties.get(BeanELResolver.java:193)
	javax.el.BeanELResolver$BeanProperties.access$400(BeanELResolver.java:170)
	javax.el.BeanELResolver.property(BeanELResolver.java:279)
	javax.el.BeanELResolver.getValue(BeanELResolver.java:60)
	javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
	org.apache.el.parser.AstValue.getValue(AstValue.java:118)
	org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
	org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:925)
	org.apache.jsp.CSVD_jsp._jspx_meth_c_005fforEach_005f0(CSVD_jsp.java:141)
	org.apache.jsp.CSVD_jsp._jspService(CSVD_jsp.java:103)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	com.gox.servlet.CSVD.doPost(CSVD.java:28)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.18 logs.
Apache Tomcat/6.0.18

It's clearly saying that it's not able to find the attributes. How should I handle this error?

Thanks & Regards
Swapna Gouri
I "try", I "catch" and "finally" WIN !!!

Seetharaman Venkatasamy

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posted 16 years ago

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Hi swapna,

i mentioned that already about naming convention of bean method

if you make this, code should work.

Swapna Gouri Kalanidhi

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posted 16 years ago

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@SeethaRaman
I have tried all possible combinations to get the output but still getting the same error.

I'm not able to understand why that error is popping up. How should I move forward from here? :roll:

Thanks & Regards
Swapna Gouri
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Seetharaman Venkatasamy

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posted 16 years ago

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ohhhhh.... sorry , i did not see your bean class properly

ops: . if this is your java bean methods

then you need to do this

and also let me know, if problem is not solve

Swapna Gouri Kalanidhi

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Hello SeethaRaman
I'm getting the same error still.

What should I do now? I'm not able to make out where the error is lying. I'm afraid if I have coded improperly or have made any silly mistake.

:roll:

I really appreciate your patience and help that you are lending me to solve this problem. Thanks a bunch !

Thanks & Regards
Swapna Gouri
I "try", I "catch" and "finally" WIN !!!

Seetharaman Venkatasamy

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posted 16 years ago

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Swapna Gouri Kalanidhi wrote:
I'm afraid if I have coded improperly

yes.

here(in your getCSVMethod) you are not using the javabean.

you need to do some thing like this

Swapna Gouri Kalanidhi

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posted 16 years ago

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Here's the servlet code:

Thanks & Regards
Swapna Gouri
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Seetharaman Venkatasamy

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posted 16 years ago

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hi, see my previous edited post . you are not setting the values into your javabean. got it?

Swapna Gouri Kalanidhi

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Yeah, I got it. But now am facing a different problem. The intensity is less, though. The setXXX() methods seem to accept only boolean, but what I'm trying to add are Strings. And because of this am getting errors that it cannot take String arguments. If this is the case then I need to change the return type of setters and getters too.

Is "Bean" a predefined class in Java, that I need to import for my purpose? I mean do I need to call the constructor of this predefined Bean class, if one exist, to solve this problem? I have seen something called as "Beans" class but not a "Bean" class. Now what should I do to get rid of this new error? Should I change the return types of my setters and getters to boolean? I don't think this will work, though.

Thanks & Regards
Swapna Gouri
I "try", I "catch" and "finally" WIN !!!

Seetharaman Venkatasamy

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posted 16 years ago

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hi swapna,

Here i mean ,Bean means TransferObject. your java class here is fine. i dont see any boolean return type . and also you go through my 2nd post of this tread .

Swapna Gouri Kalanidhi

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posted 16 years ago