Which part of container actually converts jsp to servlet

hi all,
although it's container's responsibility to convert
jsp to servlet, but can any body tell me
which part of that container is actually
is responsible for this conversion
thanx

At least for Tomcat, the engine that converts a JSP into Java code is Jasper. Then the container has to take the Java code and compile that to a .class file. Once it has that, it keeps reusing the .class file whenever you make a JSP call.
That's why first page access is often slow.
A way to speed it up is to pre-compile your JSPs.
%

Similar Messages

Converting JSP to servlet

Hi,
Can anyone show me how to convert my jsp to servlet. Then, from servlet to classes. Thanks.
cheers,

well, jsp pages are converted at run-time to servlets, e.g. if you are using tomcat as jsp engine, you will find the servlet java files somewhere under $TOMCAT_HOME/work/localhost. you can compile these java files to class files.
PS: There is a forum in here for JSP, and I would recommend that you post your questions there in the JSP forum (this one is about databases)

Convert jsp to servlet

is there any tool for translating a jsp code to be a servlet ?
I know that basically this is what happened but
this is my problem
we are making a product that can be implemented in many application servers
our problem,somtime , is that the jsp code should be changed for different application servers in order to work good
this , in my opinion want happen if the code will be in servlet
correct my if i am wrong
Thanks Shlomi

the server automatically creates this servlet. it's usually stored somewhere in the temporary directory that is specified in the context attribute javax.servlet.context.tempdir.
File directory=(File) getServletContext().get.Attribute("javax.servlet.context.tempdir");
But you are warned, the servlet's gonna be very complicated!!! And I don't know if it will help you with your problem...

Choice between JSP and Servlet

I am new to JSP and Servlet. I know JSP container will convert JSP to servlet
eventually. But in application development's standpoint, anything can be
done in servlet can also be done in JSP? Some people told me we can
use the combination of both in one application.
My question is in what situation we use JSP alone, servlet alone, or
combination of both??
Please advise. Thanks!!

Use a combination of both.
Your Web application should have a single servlet that all HTTP requests are POSTed to. All the servlet does is act like a traffic cop: it figures out what the request is, delegates to other objects that do the work, and forward the result to the next JSP, whatever that is. It's called a front controller servlet.
The JSPs should just be pure dynamic presentation. Everything displayed in the pages should have been generated by the servlet and its helper classes. No database queries, etc. Your JSPs will be a lot better off if you learn JSTL and eliminate all scriptlet code.
Check out frameworks like Struts.

Where can i see the java file of a container converted JSP file

I am using weblogic11g.
Where can i see the java file of a container converted JSP file .

Hello.
If you look for .class files, you will find them under $domain/servers/serverName/tmp/application/etc.
If you look after .java translated files, nowhere if you don't have "keepgenerated" param set to true in the appc/jspc command line (may be set in a web descriptor but can't find a reference). The foo.java will be find in .\WEB-INF\classes\jspservlet.
Edit: http://download.oracle.com/docs/cd/E12840_01/wls/docs103/webapp/weblogic_xml.html
Regards.
Aurélien.
Edited by: Aurelien DEHAY on 24 août 2009 17:12

In which part of the page i can write java script

Hi
I'm new with ADF and web development
I have a java script function that show a tooltip.
This is the function:
*function positionTip(evt) {*
*     if (!tipFollowMouse) {*
*          standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body*
*          mouseX = (ns5)? evt.pageX: window.event.clientX + standardbody.scrollLeft;*
*          mouseY = (ns5)? evt.pageY: window.event.clientY + standardbody.scrollTop;*
*     // tooltip width and height*
*     var tpWd = (ie4||ie5)? tooltip.clientWidth: tooltip.offsetWidth;*
*     var tpHt = (ie4||ie5)? tooltip.clientHeight: tooltip.offsetHeight;*
*     // document area in view (subtract scrollbar width for ns)*
*     var winWd = (ns5)? window.innerWidth-20+window.pageXOffset: standardbody.clientWidth+standardbody.scrollLeft;*
*     var winHt = (ns5)? window.innerHeight-20+window.pageYOffset: standardbody.clientHeight+standardbody.scrollTop;*
*     // check mouse position against tip and window dimensions*
*     // and position the tooltip*
*     if ((mouseX+offX+tpWd)>winWd)*
*          tipcss.left = mouseX-(tpWd+offX)+"px";*
*     else tipcss.left = mouseX+offX+"px";*
*     if ((mouseY+offY+tpHt)>winHt)*
*          tipcss.top = winHt-(tpHt+offY)+"px";*
*     else tipcss.top = mouseY+offY+"px";*
*     if (!tipFollowMouse) t1=setTimeout("tipcss.visibility='visible'",100);*
My ADF page source code is
*<?xml version = '1.0' encoding = 'windows-1252'?>*
*<page xmlns="http://xmlns.oracle.com/uix/controller"*
xmlns:ui="http://xmlns.oracle.com/uix/ui"
xmlns:data="http://xmlns.oracle.com/uix/ui"
xmlns:ctrl="http://xmlns.oracle.com/uix/controller"
xmlns:html="http://www.w3.org/TR/REC-html40" expressionLanguage="el"
xmlns:myTemplate="selfservice">
*<templates xmlns="http://xmlns.oracle.com/uix/ui">*
*<templateImport source="mainTemplate.uit"/>*
*</templates>*
*<content>*
*<dataScope xmlns="http://xmlns.oracle.com/uix/ui">*
*<provider>*
**
*</provider>*
*<contents>*
*<document>*
*<metaContainer>*
**
*<head title="General Manager"/>*
*</metaContainer>*
*<contents>*
*<body>*
*<contents>*
*<form name="form0">*
*<contents>*
*<myTemplate:SelfService title="General Manager">*
*<contents/>*
*<tabs/>*
*<pageButtons/>*
*<globalButtons/>*
*<pageHeader/>*
*<start/>*
*<end/>*
*<about/>*
*<copyright/>*
*<privacy/>*
*<corporateBranding/>*
*<productBranding/>*
*</myTemplate:SelfService>*
*<formValue name="${bindings.statetokenid}" value="${bindings.statetoken}" id="_uixState"/>*
*<table model="${bindings.HrsVEmpPhonesView1}" id="HrsVEmpPhonesView13" partialRenderMode="multiple" partialTargets="_uixState" showAll="yes" width="900">*
*<contents>*
*<column>*
*<columnHeader>*
*<sortableHeader model="${ctrl:createSortableHeaderModel(bindings.HrsVEmpPhonesView1,'EmpNameAr')}"/>*
*</columnHeader>*
*<contents>*
*<textInput model="${uix.current.EmpNameAr}" columns="10" readOnly="true" onMouseOver=""showTooltip(event,'This is a tooltip with a transparent shadow effect. Can you see the letters underneath the shadow?');return false""/>*
*</contents>*
*</column>*
*<column>*
*<columnHeader>*
*<sortableHeader model="${ctrl:createSortableHeaderModel(bindings.HrsVEmpPhonesView1,'JobDescr')}"/>*
*</columnHeader>*
*<contents>*
*<textInput model="${uix.current.JobDescr}" columns="10" readOnly="true"/>*
*</contents>*
*</column>*
*<column>*
*<columnHeader>*
*<sortableHeader model="${ctrl:createSortableHeaderModel(bindings.HrsVEmpPhonesView1,'PhoneExt')}"/>*
*</columnHeader>*
*<contents>*
*<textInput model="${uix.current.PhoneExt}" columns="10" readOnly="true"/>*
*</contents>*
*</column>*
*<column>*
*<columnHeader>*
*<sortableHeader model="${ctrl:createSortableHeaderModel(bindings.HrsVEmpPhonesView1,'CntCellPhone')}"/>*
*</columnHeader>*
*<contents>*
*<textInput model="${uix.current.CntCellPhone}" columns="10" readOnly="true"/>*
*</contents>*
*</column>*
*<column>*
*<columnHeader>*
*<sortableHeader model="${ctrl:createSortableHeaderModel(bindings.HrsVEmpPhonesView1,'CntHomePhone')}"/>*
*</columnHeader>*
*<contents>*
*<textInput model="${uix.current.CntHomePhone}" columns="10" readOnly="true"/>*
*</contents>*
*</column>*
*<column>*
*<columnHeader>*
*<sortableHeader model="${ctrl:createSortableHeaderModel(bindings.HrsVEmpPhonesView1,'IaigcEmail')}"/>*
*</columnHeader>*
*<contents>*
*<textInput model= "${uix.current.IaigcEmail}" columns="10" readOnly="true"/>*
*</contents>*
*</column>*
*</contents>*
*<tableSelection/>*
*</table>*
*</contents>*
*</form>*
*</contents>*
*</body>*
*</contents>*
*</document>*
*</contents>*
*</dataScope>*
*</content>*
*<handlers>*
**
*<event name="goto sort" source="HrsVEmpPhonesView13">*
*<invoke method="handleTableUiEvent" javaType="oracle.cabo.adf.rt.AdfUtils">*
*<parameters>*
*<parameter javaType="oracle.adf.model.binding.DCIteratorBinding" value="${bindings.HrsVEmpPhonesView1Iterator}"/>*
*<parameter javaType="oracle.cabo.servlet.expl.ControllerImplicitObject" value="${uix}"/>*
*</parameters>*
*</invoke>*
*</event>*
*<event name="select" source="HrsVEmpPhonesView13">*
*<set target="${bindings.HrsVEmpPhonesView1Iterator}" property="currentRowIndexInRange" value="${ui:tableSelectedIndex(uix, 'HrsVEmpPhonesView13')}"/>*
*</event>*
*</handlers>*
*</page>*
I want to add this function to my page
In which part exactly i can write this function
thanks in advance

To add to this, if you prefer you can separate your JavaScript from your JSF pages.
Add a folder (I named mine 'js') to your application's ViewController project's public_html folder.
Via JDeveloper, create a new JavaScript file inside your newly created folder and place your JavaScript functions inside it.
You can then 'load' the .js file using the method Shantala described, with the addition of an added 'source' property to the af:reference tag.
(This can also be a URI reference to a JavaScript file hosted on a web server)
<f:facet name="metaContainer">
<af:resource source="/js/myJsFile.js" type="javascript"/>
</f:facet>The benefits of this 'split' are cleaner JSF page source and also code-highlighting and formatting within the .js file making finding and fixing bugs in your JavaScript much easier.
It appears however, that when using <af:resource> to load scripts, once the page has been submitted even once, the JavaScript is no longer available to the page. Which isn't very useful.
A solution is to use <trh:script>.
Add xmlns:trh="http://myfaces.apache.org/trinidad/html" to your <jsp:root> tag and install the library.
then in place of the above code use:
<f:facet name="metaContainer">
<trh:script id="script1" source="/js/myJsFile.js"/>
</f:facet>Now after a page submit the JavaScript still functions.
Edited by: Matthew Carrigy on 12/08/2009 10:39

Which part of the machine is related to the keyboard flex problem ?

Mine is T420s
And I got a keyboard flex problem.
Actually which part is related to this problem ?
Isn't it inclusive to fix this problem in the warranty ?
thx

Mine doesn't exhibit any keyboard flex and I don't think it's a common issue with T420s; anyway:
http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/T420s-Keyboard-Flex/td-p/454851/highlight/t...
http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/t420s-keyboard-flex/m-p/755255/highlight/tr...
T420s i5-2520M HD3000 480GB Crucial M500 SSD 8GB RAM Ericsson F5521gw
T430 i5-3210M HD4000/NVIDIA 5400M 512GB Crucial MX100 SSD 12GB RAM Ericsson H5321gw

How to upgrade 6i form to 11g forms which includes OLE container ?

How to upgrade 6i form to 11g forms which includes OLE container ?

The migration assistant has no upgrade for that. You need to get a Javabean or PJC:
http://download.oracle.com/docs/cd/E17904_01/doc.1111/e10394/items.htm#sthref207
I don't know what kind of OLE files you have, but if it's just Word and Excel, I would you use browser functionality instead and get the doc's via web.show_document. That, however, doesn't give you update possibility.
You can also use webutil file transfer to get the file to the PC, modify it there, and transfer back to the database.
Then you still have a problem. Documents uploaded via Forms OLE container are actually modified by Forms before they are stored in the database. So, don't throw away your 6i version yet.
You need to get all the stored documents out via Forms 6i and save them as a normal document on the file system. Then you can store them back in the database using some other tool, like dbms_lob or webutil's file transfer.
There are some related discussions on his forum, so just use the Search option, e.g.
Oracle Forms 10g and OLE Containers, word documents?
Edited by: InoL on Jul 13, 2011 9:32 AM

SQLJ JSP and SERVLETS which Environment?

Hello,
I am attempting to run the samples on Chapter 5 of the
following documents with partial success.
http://technet.oracle.com/docs/products/oracle8i/doc_library/817_
doc/java.817/a83726/oraext2.htm
http://download-west.oracle.com/otndoc/oracle9i/901_doc/java.901/
a90208/oraext.htm#1015820
1. Do I need the Apache+Jserv environment to run SQLJ and JSP?
2. What do I need to do run SQLJ on oc4j if possible?
3. I dont know how to load(?) and/or run this .sqljsp file.
<%@ page language="sqlj"
import="sqlj.runtime.ref.DefaultContext,oracle.sqlj.runtime.Oracl
e" %>
<HTML>
<HEAD> <TITLE> The SQLJQuery JSP </TITLE> </HEAD>
<BODY BGCOLOR="white">
<% String empno = request.getParameter("empno");
if (empno != null) { %>
<H3> Employee # <%=empno %> Details: </H3>
<%= runQuery(empno) %>
<HR><BR>
<% } %>
<B>Enter an employee number:</B>
<FORM METHOD="get">
<INPUT TYPE="text" NAME="empno" SIZE=10>
<INPUT TYPE="submit" VALUE="Ask Oracle");
</FORM>
</BODY>
</HTML>
<%!
private String runQuery(String empno) throws
java.sql.SQLException {
DefaultContext dctx = null;
String ename = null; double sal = 0.0; String hireDate = null;
StringBuffer sb = new StringBuffer();
try {
dctx = Oracle.getConnection("jdbc:oracle:oci8:@", "scott",
"tiger");
#sql [dctx] {
select ename, sal, TO_CHAR(hiredate,'DD-MON-YYYY')
INTO :ename, :sal, :hireDate
FROM scott.emp WHERE UPPER(empno) = UPPER(:empno)
sb.append("<BLOCKQUOTE><BIG><B><PRE>\n");
sb.append("Name : " + ename + "\n");
sb.append("Salary : " + sal + "\n");
sb.append("Date hired : " + hireDate);
sb.append("</PRE></B></BIG></BLOCKQUOTE>");
} catch (java.sql.SQLException e) {
sb.append("<P> SQL error: <PRE> " + e + " </PRE> </P>\n");
} finally {
if (dctx!= null) dctx.close();
return sb.toString();
%>
I named above file as test2.sqljsp then I tried these procedures:
a) $ ojspc test2.sqljsp --these created all the files
b) $ loadjava -u -v scott/tiger _test2.class -resolve
this generated:
initialization complete
loading : _test2
creating : _test2
resolver :
resolving: _test2
errors : _test2
ORA-29521: referenced name test2$_jsp_StaticText could not
be found
ORA-29521: referenced name test2SJProfileKeys could not be
found loadjava: 2 errors
c) listed the directory and both these files are there but it
cannot resolve or find it?
d) I recall reading something about publishjsp command but I have
to establish a session shell with OSE? this part is very
confusing and am not sure what to do here.
e) not sure if i need to publish the loaded class (create a
procedure? so it can be known to the rest of plsql?)
A step by step procedure is very much appreciated. fyi.. I
have Oracle 8.1.7, + oc4j, I can run sqlj from command line
and class files generated I can run. I can also run JSP and
servlets on the oc4j accessing the database. It is this SQLJ
that throws me off balance. If you include Jdeveloper steps
ro run SQLJ thats also welcome.
Thanks in advance for kind responses posted.

In many Model-View-Controller web applications implemented using J2EE, servlets are as controllers to direct the flow between the model and view. While servlets can output HTML code directly, it is much better to use JSPs for the most part. JSPs contain HTML and possibly Java scriptlets. The J2EE container will typically compile JSPs into servlets. While you could use a JSP as a controller, there are drawbacks to that approach. To minimize the amount of Java code in your JSPs, you can either use the tags provided by the JSP spec or use tag libraries written by someone else or yourself. See the JSTL for one such example.
Also see:
http://wiki.java.net/bin/preview/Javapedia/MVC
http://wiki.java.net/bin/view/Javapedia/JavaServerPages

Which part of EP implementation requires webdynpro

Hi All,
       I am new to EP, and i know only how to create normal iviews(url iview & transactional iview only),worksets,roles. can anybody help me to know which part of EP implementation requires webdynpro and its importance.
Give some tips on some other important stuff which will be helpful for the implementation of EP
                  -- Jasmine.

hi,
   webdynpro is another kind of perspective.Where we can use components of portals like abstract,dynpage,jsp.. or webdypro which is another perspective for creating UI screens.
Web Dynpro is the SAP programming model used to develop professional Web UIs for business applications. It consists of a runtime environment and a graphical development environment with special Web-Dynpro tools that are integrated in the SAP NetWeaver Developer Studio.
The Web Dynpro tools support application development during the implementation and design phases. When a Web Dynpro application is developed, a platform-independent metamodel is created from which Java classed are generated.
Since Web Dynpro features a clear separation between layout data and business data, you can develop Web Dynpro applications with the same programming model both for mobile devices and conventional PCs.
Web Dynpro offers application developers the following advantages:
·        Different implementation languages are supported
·        The use of declarative and graphical tools significantly reduces the implementation effort
·        Web Dynpro supports a structured design process
·        Strict separation of layout data and business data through use of the Model View Controller concept
·        Reuse and better maintainability by using components
·        The layout and navigation is easily changed using the Web Dynpro tools
·        Stateful applications are supported that is, if the page is changed, the data that are required again remain intact, so you can access the data from a previous page again
·        Automatic data transport using data binding
·        Automatic input check
·        Automatic operation of the Web Dynpro application using the keyboard
·        Flicker-free screen construction
·        Syntax check at design time

In which folder should i save my jsp file in tomcat

Hi,
Actually i have installed j2sdk1.4 as well as Apache tomcat 4.1.2 version. Now i m very confused that in which directory should i save my JSP files to run the files in tomcat.
If possible pls give me alternate options also.I'll be highly thankful to u.Also is it needed to configure tomcat?
In waiting
thanx
Jassi

as far as i know, jsp can go anywhere in your webserver directory. if installed correctly that is. its like php, if u know anything about that.

Is the new mac pro 2014 upgradable? if so which parts?

I am a Video editor and graphic designer. i want to know how far can i expand the new mac pro 2014.. which parts on the machine are upgradable.

It is actually "Late 2013" in Apple parlance. Most use "nMP" for New Mac Pro" or you could call it a 6,1
There is no sign or confirmation that the Dxxx can be upgraded unless from another nMP, doubt there will be upgrades while SSD etc are and Apple shows how on product support page how to remove and install memory and the SSD device.

Which parts of the wirless fregment are encrypted by WEP?

which parts of the wirless fregment are encrypted by WEP?
a. payload of data
b. trailer
c. header
d. IV
which two of options are right?

The only portion of the ethernet frame that is encrypted with WEP is the payload. When the frame leaves the ethernet port of the AP, it is no longer encrypted at all. The header of the ethernet frame contains the source and destination MAC addresses, as well as an ethertype/length field.

Identifying which part of stored procedure is taking long time

Hi Everyone,
I have a stored procedure which is taking long time to execute. I am trying to understand which part/query in the stored procedure is taking long time.
It involves lots of table variables and n no of queries .Could anyone please help me in how to identify which query/part of the stored procedure is taking long time to execute?
Thanks in Advance

Hi Vivek -
I am only familiar with running the plan visualization for a single SQL query.
Could you please guide me how to run it for a procedure.
Thanks in Advance.

Timeline Playback Choppy - Which Part of my Hardware is the source of the problem?

Hello,
When I preview my videos using the preview frame in Premeire Pro CS5.5, I am experiencing choppy video playback. The preview starts out playing smoothly for approximately 3 seconds and then begins to go into choppy frames. Also, if it is relevant, I can play the videos perfectly fine on my computer without choppiness using any other player (i.e Windows Media Player).
The source video was taken on a GoPro Hero 3 camera and its properties are listed below:
Type: Movie
Video: 59.94 fps, 1920 x 1080 (1.0)
Audio: 48000 Hz - 32-bit Float - Stereo
In order to make sure that I was not messing up the sequence settings, I begin all of my video projects by right clicking on the source video and selecting "New Sequence from Clip
So: Onto my question: I REALLY need this problem fixed and I don't know how to do so. Could someone please tell me if this is a software or hardware issue, and if it is a hardware issue, which part do I need to replace in order to resolve? Thank you. My computer specs are listed below. Keep in mind that my computer knowledge is probably considered only slightly above average.
Processor:
Pentium(R) Dual-Core CPU E5200 @ 2.50GHz
Graphics Card:
Display adapter type
NVIDIA GeForce GTX 550 Ti
Total available graphics memory
3807 MB
      Dedicated graphics memory
1024 MB
      Dedicated system memory
0 MB
      Shared system memory
2783 MB
Display adapter driver version
9.18.13.697
Primary monitor resolution
1920x1080
DirectX version
DirectX 10
Hard Drive:
WDC WD6400AAKS-08A7B0 ATA Device
(I have no idea what that means, thats just what my device manager says.)
Memory:
8GB DDR3
Thank you very much to anyone who can provide help.
Korey

Thanks again for the responses. This is something along the lines of what I was thinking. I didn't honestly review your suggestions yet John but I certainly will. Also,just to keep in mind, in addition to video editing I need this to be a decent gaming machine.
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Which part of container actually converts jsp to servlet

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