JSP-HTML communication

          I have a HTML form that supplies 3 parameters to a jsp file. Inside the Jsp file,
          I validate those 3 parameters and throw an exception if any of them are null.
          How would I tell the HTML file if there happens an exception in the Jsp file.?Thanks

one approach is inform thru the query string the posting page.
          other appraach is use the server variables collection to determine the
          referrer(i.e the calling page)
          Oscar Dash <[email protected]> wrote in message
          news:[email protected]..
          >
          > Ok, I converted my form into a jsp as well. When an exception occurs, I am
          doing
          > sendError(500) from the target jsp. How does the first jsp (one who is
          posting
          > the data) knows about that error code?
          >
          > Michael Young <[email protected]> wrote:
          > >Hi.
          > >
          > >You can't tell the html file anything, really. HTML files are static
          > >and dumb. To do
          > >anything intelligent in a form you will probably need to convert it to
          > >a JSP as well in
          > >order to code some intelligence into it.
          > >
          > >Regards,
          > >Michael
          > >
          > >Oscar Dash wrote:
          > >
          > >> I have a HTML form that supplies 3 parameters to a jsp file. Inside
          > >the Jsp file,
          > >> I validate those 3 parameters and throw an exception if any of them
          > >are null.
          > >> How would I tell the HTML file if there happens an exception in the
          > >Jsp file.?Thanks
          > >
          > >--
          > >Michael Young
          > >Developer Relations Engineer
          > >BEA Support
          > >
          > >
          >

Similar Messages

How do you make JSF draw frame in browser w/o JSP & HTML ?

Hi all,
I already have small web application which uses HTML & JSP and I want to convert it to JSF based application.
I've read O'Reilly JSF books written by Hans Bergsten and in Chapter 15 he states that you can use pure Java classes only (without JSP & HTML) in your web application.
My web application contains some frames. Since I only want to use pure Java classes using JSF what component should I use to draw frame ?
I use MyFaces implementation of JSF.
Any advice would be greatly appreciated.
Best Regards,
Setya

I don't know anything about myFaces, but as far as I know, there is no component to draw frames. The JSF book you read is correct to a degree... It's possible to write completely with JSF tags, but it can be cumbersome sometimes.
To output frame tags using a JSF tag, you can use one of two methods.
First, you can use the outputText tag with escape attribute set to false.
<h:outputText value="<FRAMESET blah blah blah>" escape="false" />The second way is to just wrap HTML in f:verbatim tags.
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How to convert the source code in JSP,HTML&BEANS into executable files?

Sir,
We are developing one s/w product in JSP,HTML&BEANS.Now we are in the implementation phase.During the time of Installation,without copying our source code in the customer's site I want to copy the executable files of the entire source codes? Is it possible in JSP,HTML&BEANS?

In theory you can do it even with JSP but the you will be unable to run it on the standard JSP engine. :-)
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How to get the size of JSP html output?

Hi,
Is there a JSP method to get the size of JSP HTML output.
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Any ideas? Thanks.
George
Edited by: googchro on Jan 5, 2010 4:45 PM

Would you like to print "the size of this page is..." before or after you calculate the size of the page.
Because adding that bit of text to the page will make the page bigger...
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A client side tool measuring the amount of bytes received would probably be easier though.
You can always look at the Content-length header sent with a response. Though you normally don't have access to that on the java/jsp side, as it is sent by the container.
cheers,
evnafets

Print JSP/HTML Pages (perhaps PDF?)

Hi,
i have a table in HTML generated by JSP.
Just like the following simple example:
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for( Enumeration et = free.getSqlIDs().elements(); et.hasMoreElements();)
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No i want to give a button to the user. When pressed, the HTML-Page should transform to PDF.
With such a method i want to print the HTML-Page.
I Know that this is possible with the help of XML/XSP and a stylesheet. But i like to do that with this way:JavaBeans-->JSP-->HTML-->PDF
Anyone a solution, some code examples for me?
Or perhaps another solution to print HTML-Pages in a fine design?
Thank you for your help
Andy

Hi,
no one any idea?
How do you print Jsp Pages?
Thank you
Bye
Andy

Tomcat Vs Weblogic .. jsp/html file path issue..

Tomcat gurus, please help !!!
Development Env. :
OS: Window NT 4.0 SP6
Web Server: Tomcat 4.1.12
Sun JDK 1.3.1
IDE : Eclipse 2.1
Deployment/Testing/Prod Env:
OS: Sun Solaris 2.8
Web Server: Weblogic 5.1 SP 12
Sun JDK 1.3.1 IDE : N/A
Confession: New to Tomcat world.
Note: Reason why I'm using Tomcat for development though I can use Weblogic, Eclipse IDE with Tomcat plugin provides debuging functionality, thus the problem. I have an enterprise application being built and kind of stepped into a problem. I have a Servlet that marshals all the calls and process them through java beans ( about 50+ ) and content displayed through JSPs.
Here is the directory structure,
/AppContext
| +- src
| +- com.xyz.wfservices
+- jsp
main.jsp
+- WEB-INF
|
+ classes
+ com.xyz.wfservices ( compiled classes )
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and to register instance,
weblogic.httpd.register.WfServices=com.xyz.wfservices.WfSvcsController
weblogic.httpd.initArgs.WfServices=\
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<servlet>
<servlet-name>WfServices</servlet-name>
<servlet-class>com.xyz.wfservices.WfSvcsController</servlet-class>
<init-param>
<param-name>main.properties</param-name>
<param-value>c:\wfservices\properties\config.properties</param-value>
</init-param>
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Probem: Accessing JSP/Html ... documents. weblogic accessing / calling jsp ..
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Thanks
Meher

I ran into this same problem before, so I created a utility class that would map out a URI or URL given a relative path. It's nice because it will detect and include non-standard ports for both the HTTP and HTTPS protocols. If you access a servlet/jsp using HTTP, it will return a URL for the HTTP protocol and the same for HTTPS. So, that means you don't need any code changes to access things through HTTP or HTTPS :) Here it is, hope it helps you out:
import javax.servlet.*;
import javax.servlet.http.*;
public class ContextMapper
    private static final int HTTP_PORT = 80;
    private static final int HTTPS_PORT = 443;
     * This method will return a URI to access a resource given its relative
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     * @param HttpServletRequest request
     * @param HttpServletResponse response
     * @param String relativePath
     * @return String
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     * This method will return a URL to access a resource given its relative
     * path. Please note that the relative path should start in the directory
     * where the web application is deployed to. Also, the protocol will be
     * automatically detected from the request. Supported protocols include
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     * returned unmodified.
     * @param HttpServletRequest request
     * @param HttpServletResponse response
     * @param String relativePath
     * @return String
    public static String getUrl (HttpServletRequest request, HttpServletResponse response, String relativePath)
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            switch (request.getServerPort())
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                    return "http://" + request.getServerName() + request.getContextPath() + relativePath;
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                    return "https://" + request.getServerName() + ":" + request.getServerPort() + request.getContextPath() + relativePath;
        else
            return relativePath;
}Here are a few examples of using this class:
String uri = ContextMapper.getUri(request, response, "/css/basic.css");
String url = ContextMapper.getUrl(request, response, "/css/basic.css");
String uri = ContextMapper.getUri(request, response, "/images/image.gif");
String url = ContextMapper.getUrl(request, response, "/images/image.gif");
String uri = ContextMapper.getUri(request, response, "/jsp/HelloWorld.jsp");
String url = ContextMapper.getUrl(request, response, "/jsp/HelloWorld.jsp");
String uri = ContextMapper.getUri(request, response, "/servlet/HelloWorld");
String url = ContextMapper.getUrl(request, response, "/servlet/HelloWorld");

JSP, HTML, CLASS, JAVASCRIPTS TO EXE OR PACKAGES

Sir / Madam,
I am a student, I am learning by myself. Plz help me.
Can we create a package or exe which contains all JSP , HTML and their corresponding Images and Javascripts. Then extract in the server.
ie: Server should not contain source code. It should in the form of EXE or other forms.
Expecting Early replay.
Thank You,
Rengaraj

hI renga_murali, well here is my openion about your thread. Hope you will get what you are looking for exactly.
JAR files = collection of class files
WAR files = collection of class, JSP, XML files
EAR files = collection of JAR, WAR, and EJBs
There are no structural differences between the files; they are all archived using zip/jar compression. However, they are intended for different purposes.
Jar files (files with a .jar extension) are intended to hold generic libraries of Java classes, resources, auxiliary files, etc.
War files (files with a .war extension) are intended to contain complete Web applications. In this context, a Web application is defined as a single group of files, classes, resources, .jar files that can be packaged and accessed as one servlet context.
Ear files (files with a .ear extension) are intended to contain complete enterprise applications. In this context, an enterprise application is defined as a collection of .jar files, resources, classes, and multiple Web applications.
Each type of file (.jar, .war, .ear) is processed uniquely by application servers, servlet containers, EJB containers, etc.
ALSO REFER :
Creating a JAR File : http://java.sun.com/docs/books/tutorial/jar/basics/build.html
Creating a WAR File :
http://access1.sun.com/techarticles/simple.WAR.html
Creating a EAR File :
http://access1.sun.com/techarticles/DissectingEARs/DissectingEARs.html
Threads :
http://forum.java.sun.com/thread.jspa?threadID=483657&messageID=2258904
http://forum.java.sun.com/thread.jspa?threadID=455102&messageID=2075155
Explaination :
http://www.cezwright.com/tools/java/jar_war_ear.htm

Jsp&html urgent

hello ,
Im writing a page that uses the ahref attribute to navigate bw two JSP pages and the pages do some queries . i need to process the queries based on the value which the user clicks Can anybody help mw out to pass values in Ahref syntax and capturing it in the next Jsp page
Thankx

hello ,
Im writing a page that uses the ahref attribute to
navigate bw two JSP pages and the pages do some
queries . i need to process the queries based on the
value which the user clicks Can anybody help mw out
to pass values in Ahref syntax and capturing it in
the next Jsp page
ThankxPal,
u mean u'l hav a link(ie <a href attrib....>) in both the jsp pages..n those queries if done for accessin a database cud b dne bettre using a bean....anyways
Pls b comprehensive about ur requirements...
This is whut i thought of :take this code ..hope it'l b of some use..
empbean.jsp:
<Html>
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package employee;
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Here this jsp page creates a bean object and passes on the parameters to the bean through bean properties tag..

Jsp/html form- servlet- xml parsing

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will be appreciated..........thanks

Hi,
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well,I have one idea ok.
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best of luck..
With Regards
Lokesh T.C

Create Form Beans from JSP/HTML forms

In the Builder certification objectives, there is one called "Create Form Beans from JSP/HTML forms". How can I do that? How can I create a form beam starting from the JSP form or HTML form?

Guys, no one from forum can answer this question?

Controlling printmargins with java/jsp/html

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Is there any way for my application to set this values (including all other browsers as well) to print what I am presenting in my viewing.
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Cincerely P�l

Then this might not be a suited javaquestion;) But do you know where to start searching for a solution. I've been googling all over the place for a hint on how to sort this out.
P�l

JSP HTML parameter form to call report - Dependent drop down list

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JSP / HTML page does not load correctly in IE

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In case you need an HTML version of the code, please do mail me at [email protected]

Jaison_Sabu wrote:
I have a particular jsp page, which has heavy volume of data and it does not load completely in IE, but loads perfectly in Firefox and Safari.
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Hi,
Thanks for ur help...
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