JSF 2.0: Parameterizable Converter
Hey there,
I have implemented a custom converter for type String that checks the user input for forbidden characters. Additionally I 'm looking for a possibility to set a type parameter to change the list of forbidden characters depending on the input type.
I found some articles with different proposals for solution, but the easy ones don 't work and the less easy ones seem to me to be some kind of JSF 1.x solution.
That 's what I tried:
I added a property and an attribute node for my converter in my faces-config.xml, just to see if one that will work:
<converter>
<converter-id>secureStringConverter</converter-id>
<converter-class>de.unioninvestment.phoenix.tc.security.SecureStringConverter</converter-class>
<attribute>
<attribute-name>type</attribute-name>
<attribute-class>java.lang.String</attribute-class>
<default-value>Kontonummer</default-value>
</attribute>
<property>
<property-name>maxLength</property-name>
<property-class>int</property-class>
<default-value>1024</default-value>
</property>
</converter>
I added the Java Bean properties type and maxLength to my converter class.
I tried several ways to set the type inside my facelet:
<h:inputText id="belegnummer" value="#{nachrichtenBean.belegNr}" label="Belegnummer" >
<f:converter converterId="secureStringConverter" type="Belegnummer" >
</f:converter>
</h:inputText>
<h:inputText id="laufendeNummer" value="#{nachrichtenBean.laufendeNr}" label="Laufende Nummer" >
<f:converter converterId="secureStringConverter" >
<f:attribute name="type" value="LaufendeNummer" />
</f:converter>
</h:inputText>
<h:inputText id="kundennummer" value="#{nachrichtenBean.kundenNr}" label="Kundennummer" >
<f:converter converterId="secureStringConverter" >
</f:converter>
<f:attribute name="type" value="Kundennummer" />
</h:inputText>
I found some articles telling me that I have to provide a tag lib for my custom converter and I found some articles saying that I have to implement a tag handler, too. Honestly, I don 't wand to do neither of these... :-) Fact is now: The default values in the faces-config.xml are not set and the values in the facelet are not set, neither.
Any hint? Any good tutorial covering converter parameters?
Thanks,
Stephan
Post your code. It worked in 1.2.
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2. Whenever I click onThanks for the reference , I shall definitely go through it.
My immediate concern is to get the first program working.
Here is my source code for the bean.
package com.myjsf;
import java.io.Serializable;
public class UserBean implements Serializable {
private String userName;
public String getUserName() {
return userName;
public void setName(String userName) {
this.userName = userName;
}Here's my login.jsp which comes up fine
<f:view>
<h:form>
<h:messages/>
<h3>Please enter your name.</h3>
Name: <h:inputText id = "userName" value="#{user.userName}"/><br>
<h:commandButton value="Login" action="welcome"/>
</h:form>
</f:view>Here's my faces-config.xml
<faces-config>
<managed-bean>
<managed-bean-name>user</managed-bean-name>
<managed-bean-class>com.myjsf.UserBean</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
</managed-bean>
<navigation-rule>
<from-view-id>/login.jsp</from-view-id>
<navigation-case>
<from-outcome>welcome</from-outcome>
<to-view-id>/welcome.jsp</to-view-id>
</navigation-case>
</navigation-rule>
</faces-config> And this is the error that I get
"userName": Conversion error occurred. The page gets displayed again. One thing I noticed was that in the html - view source the action attribute of the form tag is set to /myjsf/faces/login.jsp. Shouldnt it be welcome.jsp rather ?
Iam at my wits end. I have decided to write a Converter which may solve my problem, but is it required ?
Please help.
Thanks,
Ram. -
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I have my existing application non-JSF and I am converting it to JSF one by one (one class/jsp every day). My Current application is simply JSP and Java Bean
.I have my backend data stored in hardware boxes (RAID subsystems)
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that helps a lot
--Urvish -
Hello
my question:
for example i have a h:selectOneMenu, witch present the streets in the any (chose before) town
this selection in xhtml page looks like
<h:selectOneMenu id="town_4" value="#{locationAddAction.street}" immediate="true">
<f:selectItems value="#{locationAddAction.streetLookup}" />
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</h:selectOneMenu>in my project i need to convert a string into Street object stored in DB
but there are can be many streets with the same names, but difference in town reference
so i need the town attribute in converter
my converter class extends javax.faces.convert.Converter
public class StreetConverter implements Converter {
private LocationService locationService = new LocationService();
private Town town;
@Override
public Object getAsObject(FacesContext arg0, UIComponent arg1, String arg2) {
Town town = locationService.getStreetByNameMatch(town,arg2)
return town;
@Override
public String getAsString(FacesContext arg0, UIComponent arg1, Object arg2) {
if (arg2 instanceof Street)
return ((Street) arg2).getName();
return null;
public Town getTown() {
return town;
public void setTown(Town town) {
this.town = town;
}i registered my converter with parameter in faces-config.xml
<converter>
<converter-id>streetConverter</converter-id>
<converter-class>package.StreetConverter</converter-class>
<attribute>
<attribute-name>town</attribute-name>
<attribute-class>package.Town</attribute-class>
</attribute>
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<tag>
<tag-name>streetConverter</tag-name>
<converter>
<converter-id>streetConverter</converter-id>
</converter>
</tag>PROBLEM:
any request to my converter (StreetConverter, <fmedia:streetConverter>) set the new creation of my Converter
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sorry my horrible english
thanks =)Use f:attribute:<h:someComponent>
<f:converter converterId="streetConverter" />
<f:attribute name="town" value="#{bean.town}" />
</h:someComponent>
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Object town = component.getAttributes().get("town");
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public X getAsX(FacesContext context, UIComponent component, Y value) {
Bean bean = (Bean) context.getApplication().evaluateExpressionGet(context, "#{bean}", Bean.class);
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at com.ibm.ws.bootstrap.WSLauncher.main(WSLauncher.java:94)
at com.ibm.etools.websphere.tools.runner.api.ServerRunnerV5$1.run(ServerRunnerV5.java:97)
[6/12/06 15:31:14:188 IST] 3e311815 WebGroup E SRVE0020E: [Servlet Error]-[ActionServlet]: Failed to load servlet: javax.servlet.UnavailableException: org.apache.commons.digester.SetPropertyRule tried to access method org/apache/commons/beanutils/BeanUtils.setProperty(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:366)
at javax.servlet.GenericServlet.init(GenericServlet.java:258)
at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doInit(StrictServletInstance.java:82)
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._init(StrictLifecycleServlet.java:147)
at com.ibm.ws.webcontainer.servlet.PreInitializedServletState.init(StrictLifecycleServlet.java:270)
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.init(StrictLifecycleServlet.java:113)
at com.ibm.ws.webcontainer.servlet.ServletInstance.init(ServletInstance.java:189)
at javax.servlet.GenericServlet.init(GenericServlet.java:258)
at com.ibm.ws.webcontainer.webapp.WebAppServletManager.addServlet(WebAppServletManager.java:870)
at com.ibm.ws.webcontainer.webapp.WebAppServletManager.loadServlet(WebAppServletManager.java:224)
at com.ibm.ws.webcontainer.webapp.WebAppServletManager.loadAutoLoadServlets(WebAppServletManager.java:542)
at com.ibm.ws.webcontainer.webapp.WebApp.loadServletManager(WebApp.java:1277)
at com.ibm.ws.webcontainer.webapp.WebApp.init(WebApp.java:283)
at com.ibm.ws.webcontainer.srt.WebGroup.loadWebApp(WebGroup.java:387)
at com.ibm.ws.webcontainer.srt.WebGroup.init(WebGroup.java:209)
at com.ibm.ws.webcontainer.WebContainer.addWebApplication(WebContainer.java:987)
at com.ibm.ws.runtime.component.WebContainerImpl.install(WebContainerImpl.java:136)
at com.ibm.ws.runtime.component.WebContainerImpl.start(WebContainerImpl.java:356)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:418)
at com.ibm.ws.runtime.component.DeployedApplicationImpl.fireDeployedObjectStart(DeployedApplicationImpl.java:787)
at com.ibm.ws.runtime.component.DeployedModuleImpl.start(DeployedModuleImpl.java:354)
at com.ibm.ws.runtime.component.DeployedApplicationImpl.start(DeployedApplicationImpl.java:575)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:271)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:249)
at com.ibm.ws.runtime.component.ContainerImpl.startComponents(ContainerImpl.java:536)
at com.ibm.ws.runtime.component.ContainerImpl.start(ContainerImpl.java:413)
at com.ibm.ws.runtime.component.ApplicationServerImpl.start(ApplicationServerImpl.java:125)
at com.ibm.ws.runtime.component.ContainerImpl.startComponents(ContainerImpl.java:536)
at com.ibm.ws.runtime.component.ContainerImpl.start(ContainerImpl.java:413)
at com.ibm.ws.runtime.component.ServerImpl.start(ServerImpl.java:183)
at com.ibm.ws.runtime.WsServer.start(WsServer.java:128)
at com.ibm.ws.runtime.WsServer.main(WsServer.java:225)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:41)
at java.lang.reflect.Method.invoke(Method.java:386)
at com.ibm.ws.bootstrap.WSLauncher.main(WSLauncher.java:94)
at com.ibm.etools.websphere.tools.runner.api.ServerRunnerV5$1.run(ServerRunnerV5.java:97)
(same error message re-iterates/repeats itself... and finally -
Error 503: Failed to load target servlet [ActionServlet] comes in web-browser
Following is the error which I get if I comment the <controller> element in the struts-config.xml file
and use a <s:form action="xxxxx.do"> in the struts converted jsf page. The web-server starts fine, but
accessing the jsf page givers error as:
[6/12/06 15:38:00:781 IST] 696f19de WebGroup I SRVE0180I: [Sample Struts-JSF integration application] [training2] [Servlet.LOG]: /jsp/welcomeF.jsp: init
[6/12/06 15:38:01:219 IST] 696f19de WebGroup E SRVE0026E: [Servlet Error]-[]: java.lang.NullPointerException
at org.apache.struts.faces.renderer.FormRenderer.encodeBegin(FormRenderer.java:114)
at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:683)
at javax.faces.webapp.UIComponentTag.encodeBegin(UIComponentTag.java:591)
at javax.faces.webapp.UIComponentTag.doStartTag(UIComponentTag.java:478)
at org.apache.jsp._welcomeF._jspService(_welcomeF.java:207)
at com.ibm.ws.webcontainer.jsp.runtime.HttpJspBase.service(HttpJspBase.java:89)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.ibm.ws.webcontainer.jsp.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:344)
at com.ibm.ws.webcontainer.jsp.servlet.JspServlet.serviceJspFile(JspServlet.java:662)
at com.ibm.ws.webcontainer.jsp.servlet.JspServlet.service(JspServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110)
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java:174)
at com.ibm.ws.webcontainer.servlet.IdleServletState.service(StrictLifecycleServlet.java:313)
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116)
at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283)
at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42)
at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:974)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:555)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:200)
at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322)
at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:130)
at org.apache.struts.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:130)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110)
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java:174)
at com.ibm.ws.webcontainer.servlet.IdleServletState.service(StrictLifecycleServlet.java:313)
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116)
at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283)
at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42)
at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:974)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:555)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:200)
at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1054)
at org.apache.struts.action.RequestProcessor.internalModuleRelativeForward(RequestProcessor.java:992)
at org.apache.struts.action.RequestProcessor.processForward(RequestProcessor.java:551)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:209)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1192)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:412)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110)
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java:174)
at com.ibm.ws.webcontainer.servlet.IdleServletState.service(StrictLifecycleServlet.java:313)
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116)
at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283)
at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42)
at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:974)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:555)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:200)
at com.ibm.ws.webcontainer.srt.WebAppInvoker.doForward(WebAppInvoker.java:119)
at com.ibm.ws.webcontainer.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:276)
at com.ibm.ws.webcontainer.cache.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:71)
at com.ibm.ws.webcontainer.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:182)
at com.ibm.ws.webcontainer.oselistener.OSEListenerDispatcher.service(OSEListener.java:334)
at com.ibm.ws.webcontainer.http.HttpConnection.handleRequest(HttpConnection.java:56)
at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:618)
at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:439)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:593)
Finally if I change my <s:form action="xxxxx.do"> tag to
<h:form>
<h:commandButton id="submit" action="xxxx.do" value="Submit" />
I see the webpage coming up in the browser (no controller element used in struts-config.xml file this time)
But in the html source of this html created from jsf I see
<form id="_id2" method="post" action="/training2/jsp/welcomeF.faces" enctype="application/x-www-form-urlencoded">
here form's action attribute is pointing to the same displayed page with the context name prefixed. I
assume it is because jsf could not resolve the "xxxx.do" action to anything so set it to the same displayed page.
May be I am wrong as usual...
Below is the simple struts jsp page which I need to convert to jsf page as I am converting only the View part of application.
I want to use the same struts beans and application logic at the back-end. At front-end I need UIComponents from JSF to be used.
Following is the struts jsp page
<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1" %>
<%@ taglib prefix="html" uri="/WEB-INF/lib/struts-html.tld" %>
<%@ taglib prefix="bean" uri="/WEB-INF/lib/struts-bean.tld" %>
<html:html>
<html:base/>
<html:messages id="messages" />
<font style="color:red; font=weight:italic; font-family: century gothic">
<html:errors/>
</font>
<BODY>
<P>Sample Struts and JSF integration example</P>
<P>This one is being displayed via Struts specific tags</P>
<html:form action="validateUser.do">
<bean:message key="label.name" /> : <html:text property="name" />
<bean:message key="label.password" /> : <html:password property="password" />
<bean:message key="label.age" /> : <html:text property="age" />
<bean:message key="label.city" /> : <html:text property="city" />
<bean:message key="label.address" /> : <html:text property="address" />
<html:submit property="submit" value="Show info via Struts" />
</html:form>
</BODY>
</html:html>
I have converted it into the following jsf page
<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1" %>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="http://struts.apache.org/tags-faces" prefix="s" %>
<f:view>
<HTML><BODY>
<f:verbatim><P>Sample Struts and JSF integration example</P></f:verbatim>
<f:verbatim><P>This one is being displayed via JSF tags</P></f:verbatim>
<h:form> <!-- Want to use s:form tag instead of this h:form tag -->
<h:inputText id="name" value="#{userForm.name}" /><f:verbatim>
</f:verbatim>
<h:inputSecret id="password" value="#{userForm.password}" /><f:verbatim>
</f:verbatim>
<h:inputText id="age" value="#{userForm.age}" /><f:verbatim>
</f:verbatim>
<h:inputText id="city" value="#{userForm.city}" /><f:verbatim>
</f:verbatim>
<h:inputText id="address" value="#{userForm.address}" /><f:verbatim>
</f:verbatim>
<h:commandButton id="submit" action="#{user.facesAction}" value="Show info via Struts" />
</h:form>
</BODY></HTML>
</f:view>
I am very hopeful of some answer from respected group experts, please help me.
I am in urgency of course but would not push for immed. response like other, just want some help for sure that is going to
be extremely valuable to me. Anticipating a helping hand...
Thanks and Regards
Vishal Sharm
Time's fun when you're having flies � Kermit, the Frog
-------------------------------------------------------------------------I've managed to get this working Ok from JDeveloper:
See:
http://www.groundside.com/blog/content/DuncanMills/J2EE+Development/?permalink=573FDB6F8D918B9704907899635CABB1.txt
http://www.groundside.com/blog/content/DuncanMills/J2EE+Development/?permalink=2B04ACE99A6437EDED775F15553D1DED.txt
Basically you just have to fiddle around with Library settings to get this working OK.
As to how useful this is, well that's up to you - I'd not regard Faces + Struts as a must use combination, rather it's a can mix if you really need to. Look at Faces and Faces navigation first and see if that actually gives you enough before you start to look at mixing. -
Converter for converting all HTML tags to JSF tags
hai all,
i am new to JSF. i need a suggestions to convert all my HTML pages to JSF pages bcoz i was already created more pages in HTML and now i want to convert all the pages to JSF. can u give any suggestion plz post it here or send me a mail to [email protected]
thanks in advance,
regards,
V.Sabarishhi roman,
thanks for ur reply. it converts the file but the links r not converting....so can u suggest me another way for converting a HTML tags to JSF tags. -
Strategy for converting HTML mockups to JSF
This is a summary of our front-end development process:
- designers create PNG mockups
- UXers create HTML mockups
- developers create final JSF
Now, these HTML mockups are pretty complete. They use all our in-house JavaScript widgets, production CSS files, responsive design, accesibility requirements, SEO-friendly code, proper semantics etc. So basically the final HTML we need from the JSFs has to nail these mockups, otherwise widgets might not work, styles might not appear correctly, accesibility errors might crop in and SEO might suffer. The developers tend to have limited experience in HTML/JavaScript/CSS/accesibility, especially compared to the UXers, so the less they can do to screw up the HTML the better.
With this in mind we tell our developers to just convert the very minimum to JSF. So that basically means forms & form elements and the occasional loop. For example we tell them to avoid h:dataTable and just use the given HTML table and a loop - for some reason (probably lack of experience) we found it very difficult to nail the right HTML in terms of thead, tbody, th and td (or to get a rowspanned "There are no results" output for empty lists). We even tell them to use straight EL instead of h:outputText (unless they really need it) for i18n literals or form outputs. Then there is the added complication in that we use HTML5 (currently using a RenderKit for that). I also prefer to avoid tying my HTML to a given technology: I don't want my JavaScript/CSS to depend on JSF (or PrimeFaces or whatever) output, I want it to depend on what we consider the "correct" HTML in terms of semantics (ie, unobtrusive frameworks).
Would you say this is a correct strategy? I find it helps reduce developer workload (less to convert), reduces front-end errors (less to screw up), and might it also reduce memory footprint on the server (less component tree)? Or am I missing something?Hi!
You can import your html page into project.
1) Click 'File->Add Existing Item->Web Page'.
2) In field 'File or URL' enter path to your html.
3) Check that 'Convert HTML tags to JSF Components' checkbox is checked.
4) Click OK.
Your HTML page will be transformed to JSP page.
Thanks,
Roman. -
i need to convert a JSF Page into a PDF Document .
any ideas how to do that?SACHINLINUX wrote:
BalusC wrote:
Why are you hijacking other's topic and acting like you're the topic starter? You're rude.Mr Balu. kindly tell the solution if you have instead of dictating rules. As far as rudeness concern i never seen a person rude like you.
Sachin KokchaMr Sachin Mr. BalusC is tellign right thing it is not your topic as well as you are telling that you have only one login name. So no need to act like the topic starter.
Every forum has it's own rules so please kindly obey these rules.
Gantu
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