Calling JavaBean From JSP

I wrote a very simple program to try to figure out how to use a javabean from multiple jsp pages. There are 2 jsps ("page1.jsp", "page2.jsp") and 1 bean ("TestBean.java"). The 1st JSP uses a bean called "myBean". It sets a value and successfully displays the value using the bean id ("myBean"). When I click the link to go to page2.jsp, however, I get a "cannot resolve symbol" error (italicized below). This error doesn't make sense to me because I set the bean to "session" scope and I never closed my browser during the session. I know I must be missing something very basic but I can't figure out what it is. Any help would be much appreciated!
C:\jakarta-tomcat-5.0.18\work\Catalina\localhost\test\org\apache\jsp\page2_jsp.java:46: cannot resolve symbol
symbol : variable myBean
location: class org.apache.jsp.page2_jsp
int beanInt = myBean.getMyInt();
^
1 error
Page1.jsp:
<jsp:useBean id="myBean" scope="session" class="test.TestBean" />
<jsp:setProperty name="myBean" property="myInt" value="99" />
<html><head> <title></title></head><body>
<% int someInt = myBean.getMyInt(); %>
<%= "someInt = " + someInt %>
<A href="page2.jsp">Continue</A>
</body></html>-----------------------------------------------------------
Page2.jsp:
<html>
<head><title></title></head><body>
<%
     int beanInt = myBean.getMyInt();
%>
<%= "beanInt = " + beanInt %>
</body></html>-----------------------------------------------------------
TestBean.java:
package test;
public class TestBean {
     int myInt;
     public void setMyInt(int a) {
          myInt = a;
     public int getMyInt() {
          return myInt;

Yes you set your bean to session scope,
but you need to include the useBean statement on every
page you want to use that bean in scriptlet code.
<jsp:useBean id="myBean" scope="session"
class="test.TestBean" />
It worked, thanks! I have a follow-up question though:
What if I decide in "page2.jsp" to change the definiton of my useBean statement (but NOT the "id")? For example, in "page2.jsp" what would the effect be if I wrote this statement (changes only in the scope of the bean)...
<jsp:useBean id="myBean" scope="application" class="test.TestBean" />...or...
<jsp:useBean id="myBean" scope="request" class="test.TestBean" />I chose those 2 scopes since one is broader and the other is "less broad". From the small amount of testing I've done it looks like any changes in the definition of the bean cause a new bean to be created (regardless of the "id" used). Does that sound correct to you or is there more to it than this? I just want to make sure I have the concept down. And, again, thanks very much for the help.

Similar Messages

How to call servlet from jsp

i m trying to call it from jsp using
<a href="../purchaseP?orderno=<%=pno%>"><%=pno%></a>
but its giving error..
type Status report
message HTTP method GET is not supported by this URL
description The specified HTTP method is not allowed for the requested resource (HTTP method GET is not supported by this URL).

i m trying to call it from jsp using
<a href="../purchaseP?orderno=<%=pno%>"><%=pno%></a>
but its giving error..
type Status report
message HTTP method GET is not supported by this URL
description The specified HTTP method is not allowed
for the requested resource (HTTP method GET is not
supported by this URL).Are you implementing the doGet or doPost method in your servlet? If you are calling from a hyperlink then it needs to be implementing the GET method. To access the POST method use a html form.

Wot all ways are there to call servlet from jsp

hi all
i want to know wot all methods are available
so that i can call servlet from jsp
the one which i know is using RequestDispatcher
wot are others ?
thanx

hi all
i want to know wot all methods are available
so that i can call servlet from jsp
the one which i know is using RequestDispatcher
wot are others ?
thanxhi here are few ways... to call servlet from jsp...
these are just generic syntax.
Form:
<form action="ServletPath">
Link:
Directives & Action tags :
<%@ page import="ServletPath" %>
     <%@ taglib uri="ServletPth" %>
     <jsp:include page="ServletPath">
     <jsp:forward page="ServletPath">
     <jsp:useBean class="ServletPath"> (Not sure about this useBean)
hope you got your answer.
regards,
immu

Calling JApplet from jsp

Hi,
Can any one tell me how to call JApplet from JSP? I am using <jsp:plugin>
tag but it is not working.

use the jsp:plugin tag like this in your jsp page..
<jsp:plugin type="applet"
     code="appletclsname.class"
     codebase="ourapplets"
     jreversion="1.5"
     width="400px"
     height="200px">
</jsp:plugin>

How to call Servlet from jsp page and how to run this app using tomcat..?

Hi ,
I wanted to call servlet from jsp action i.e. on submit button of JSP call LoginServlet.Java file.
Please tell me how to do this into jsp page..?
Also i wanted to execute this application using tomcat.
Please tell me how to do this...? what setting are required for this...? what will be url ..??
Thanks.

well....my problem is as follows:
whenever i type...... http://localhost:8080/appName/
i am getting 404 error.....it is not calling to login.jsp (default jsp)
but when i type......http://localhost:8080/appName/login.do........it executes servlet properly.
Basically this 'login.do' is form action (form action='/login.do').....and i wanted to execute this from login jsp only.(from submit button)
In short can anyone please tell me how to diaplay jsp page using tomcat 5.5
plz help me.

Error when call javabean from form6i

I try to call javabean from Form6i. I have downlaoded four excample from Oracle Sample Code. But I can't run the example whenever from Form Builder or browser. When I run the html in IE or Natscape browser, I meet a eorror message :
java.lang.NoClassDefFound Error: sun/applet/AppletViewer
I have copy all example classes into e:\orant\forms60\java\oracle\forms\demos\ directory and the jar file copy into e:\orant\forms60\java directory.
Inside the html I set the codebase to e:\orant\forms60\java.
Is there any error or I still need to set some anothers settings?
Help please?
null

Hi Adnan
I have configured my apps similary the example in
\orant\tools\devdem60\web then it rans fine.
Thanks,
Ruy Chicaco.
Adnan Imtiaz (guest) wrote:
: Hi there,
: I'm facing the same problem myself...but mine goes into doing
: something & returns an "Internal Error" message in the
: browser....
: Try running the static HTML file from its directory & see
whether
: that even runs or not....
: Any helpp would be greatly appreciated.....
: Thanks.
: Ruy chicaco (guest) wrote:
: : I have used OAS 4.0.7 with yt40.dll upgraded, NT 4.0
: : SP4 and Developer 6.
: : I have configured application cartridge according Developer6
: : Server doc instructions.
: : When I call fmx from browser Netscape 4.6
: : (http://hostname/webforms?module=fmx_name) the error "Applet
: : oracle.forms.engine.Main class oracle.forms.engine.Main could
: not
: : be loaded".
: : OAS inserts in file \orant\ows\website40\log the message
: : "Parameter module is missing from URL and cartridge settings"
: : Can anybody help me please?.
: : Ruy Chicaco
null

Can't create DeliveryBean when call bpel from jsp

Can't create DeliveryBean when call bpel from jsp
/*** code ********************************/
Properties props = new java.util.Properties();
java.net.URL url = ClassLoader.getSystemResource("context.properties");
props.load(url.openStream());
Locator locator = new Locator(domain, "bpel", props);
IDeliveryService deliveryService = (IDeliveryService)locator.lookupService(IDeliveryService.SERVICE_NAME);
NormalizedMessage nm = new NormalizedMessage();
String convId = GUIDGenerator.generateGUID();
nm.setProperty(NormalizedMessage.CONVERSATION_ID, convId);
nm.addPart("payload", xml);
NormalizedMessage res = deliveryService.request(processID,operationName, nm);
/*** code ********************************/
This code works well in java , but when I use it in jsp on tomcat server,
the following exception ocured:
Can not create "ejb/collaxa/system/DeliveryBean" bean; exception reported is: "javax.naming.NameNotFoundException: Name ejb is not bound in this Context at org.apache.naming.NamingContext.lookup(NamingContext.java:768) at org.apache.naming.NamingContext.lookup(NamingContext.java:151) at org.apache.naming.SelectorContext.lookup(SelectorContext.java:136) at javax.naming.InitialContext.lookup(InitialContext.java:351) at com.oracle.bpel.client.util.BeanRegistry.lookupDeliveryBean(BeanRegistry.java:279) at com.oracle.bpel.client.delivery.DeliveryService.getDeliveryBean(DeliveryService.java:250) at com.oracle.bpel.client.delivery.DeliveryService.request(DeliveryService.java:83) at com.oracle.bpel.client.delivery.DeliveryService.request(DeliveryService.java:53) at workflow.bpel.BpelProcessHelper.invokeSyncBpel(BpelProcessHelper.java:54) at
Will anyone to tell me where "ejb/collaxa/system/DeliveryBean" bean is?
Which jar file is this class in ?
Thanks

did you try including bpel/lib/orabpel.jar & bpel/system/server/j2ee/ob_ejb_engine.jar in your tomcat classpath.

Calling EJB from JSP in SSL Mode

Hi,
I need to call an EJB from JSP in SSL Mode.
How can i do that.
Regards,
S.V.Satish Kumar

In that case you can refer to the following documents:
Using JPA: http://help.sap.com/saphelp_nwce711/helpdata/en/44/eba6292f446c30e10000000a114a6b/frameset.htm
Accessing persistence functionality in EJB 3.0: http://help.sap.com/saphelp_nwce711/helpdata/en/46/307a2a50094f09e10000000a114a6b/frameset.htm
Tell me, if these documents help you. Otherwise, I will search for more information on the topic.
Best regards,
Ekaterina

Cant call localejbbean from jsp

hi all,
i try to call my LocalEjbBean from Jsp file , but i got this exception
this is my jsp file
<%
com.dcons.iss.HelloLocalHome home =null;
com.dcons.iss.HelloLocal hello=null;
Context ctx = new InitialContext();
Object obj=ctx.lookup("HelloLocalBean");
home = (com.dcons.iss.HelloLocalHome)obj;
hello = home.create();
hello.display();
%>
this is my ejb-jar xml
<ejb-jar>
<enterprise-beans>
<session>
<ejb-name>Hello</ejb-name>
<local-home>com.dcons.iss.HelloLocalHome</local-home>
<local>com.dcons.iss.HelloLocal</local>
<ejb-class>com.dcons.iss.HelloLocalBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
<ejb-local-ref>
<ejb-ref-name>HelloLocalBean</ejb-ref-name>
<ejb-ref-type>Session</ejb-ref-type>
<local-home>HelloLocal</local-home>
<local>HelloLocalHome</local>
<ejb-link>HelloLocalBean</ejb-link>
</ejb-local-ref>
</session>
</enterprise-beans>
</ejb-jar>
this is my weblogic -ejb-jar.xml
<weblogic-ejb-jar>
<weblogic-enterprise-bean>
<ejb-name>Hello</ejb-name>
<stateless-session-descriptor>
</stateless-session-descriptor>
<reference-descriptor>
<ejb-local-reference-description>
<ejb-ref-name>HelloLocalBean</ejb-ref-name>
<jndi-name>HelloLocalBean</jndi-name>
</ejb-local-reference-description>
</reference-descriptor>
<local-jndi-name>HelloLocalBean</local-jndi-name>
</weblogic-enterprise-bean>
</weblogic-ejb-jar>
Exception is
<May 17, 2004 12:53:00 PM GMT+05:30> <Error> <HTTP> <BEA-101017> <[ServletContex
t(id=14238425,name=TestServerPro,context-path=/TestServerPro)] Root cause of Ser
vletException.
javax.naming.LinkException: . Root exception is javax.naming.NameNotFoundExcept
ion: While trying to look up /app/ejb/LocalEJBProject.jar#Hello/local-home in /a
pp/webapp/TestServerPro/26623105.; remaining name '/app/ejb/LocalEJBProject/jar#
Hello/local-home'
at weblogic.jndi.internal.BasicNamingNode.newNameNotFoundException(Basic
NamingNode.java:858)
at weblogic.jndi.internal.ApplicationNamingNode.lookup(ApplicationNaming
Node.java:150)
at weblogic.jndi.internal.WLEventContextImpl.lookup(WLEventContextImpl.j
ava:237)
at weblogic.jndi.internal.WLContextImpl.lookup(WLContextImpl.java:336)
at weblogic.jndi.factories.java.ReadOnlyContextWrapper.lookup(ReadOnlyCo
ntextWrapper.java:45)
at weblogic.jndi.internal.AbstractURLContext.lookup(AbstractURLContext.j
ava:130)
at javax.naming.InitialContext.lookup(InitialContext.java:347)
at weblogic.jndi.internal.WLNamingManager.getObjectInstance(WLNamingMana
ger.java:96)
at weblogic.jndi.internal.ServerNamingNode.resolveObject(ServerNamingNod
e.java:265)
at weblogic.jndi.internal.BasicNamingNode.resolveObject(BasicNamingNode.
java:732)
at weblogic.jndi.internal.BasicNamingNode.lookup(BasicNamingNode.java:19
1)
at weblogic.jndi.internal.WLEventContextImpl.lookup(WLEventContextImpl.j
ava:237)
at weblogic.jndi.internal.WLContextImpl.lookup(WLContextImpl.java:336)
at javax.naming.InitialContext.lookup(InitialContext.java:347)
at jsp_servlet.__index._jspService(index.jsp:20)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run
(ServletStubImpl.java:971)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:402)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:28)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.ja
va:27)
at com.bea.wlw.netui.pageflow.PageFlowJspFilter.doFilter(PageFlowJspFilt
er.java:208)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.ja
va:27)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispat
cherImpl.java:305)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.superForward(Page
FlowRequestProcessor.java:1304)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor$DefaultHttpRedire
ctor.forward(PageFlowRequestProcessor.java:1320)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.doForward(PageFlo
wRequestProcessor.java:1200)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.processForwardCon
fig(PageFlowRequestProcessor.java:1094)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.ja
va:279)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.process(PageFlowR
equestProcessor.java:651)
at com.bea.wlw.netui.pageflow.AutoRegisterActionServlet.process(AutoRegi
sterActionServlet.java:527)
at com.bea.wlw.netui.pageflow.PageFlowActionServlet.process(PageFlowActi
onServlet.java:152)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run
(ServletStubImpl.java:971)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:402)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:305)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispat
cherImpl.java:307)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.superForward(Page
FlowRequestProcessor.java:1304)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor$DefaultHttpRedire
ctor.forward(PageFlowRequestProcessor.java:1320)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.doForward(PageFlo
wRequestProcessor.java:1200)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.process(PageFlowR
equestProcessor.java:638)
at com.bea.wlw.netui.pageflow.AutoRegisterActionServlet.process(AutoRegi
sterActionServlet.java:527)
at com.bea.wlw.netui.pageflow.PageFlowActionServlet.process(PageFlowActi
onServlet.java:152)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run
(ServletStubImpl.java:971)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:402)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:305)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationActio
n.run(WebAppServletContext.java:6354)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Authenticate
dSubject.java:317)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:
118)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
rvletContext.java:3635)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:2585)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
>
javax.naming.LinkException: . Root exception is javax.naming.NameNotFoundException: While trying to look up /app/ejb/LocalEJBProject.jar#Hello/local-home in /app/webapp/TestServerPro/26623105.; remaining name '/app/ejb/LocalEJBProject/jar#Hello/local-home'
plz help me to solve this problem

Hi,
The portable way to lookup any resources within a J2EE component is to the private component namespace located under java:comp/env. Even though some products allow you to do a "global" lookup, that's not the preferred approach since it's not portable. Your deployment descriptors need to be changed since you need to define the ejb-local-ref within the descriptor of the client component, which in this case is the jsp. So, you would need to define the ejb-local-ref within the web.xml associated with the jsp. The ejb-ref-name within the ejb-local-ref should be appended to the java:comp/env lookup in your code. So, for your example, the jsp would ctx.lookup("java:comp/env/HelloLocalBean")
--ken

Calling Beans from JSP page

hi,
I tried to my best to call java beans from JSP page but it generate error that "unable to load class....", please help me that in which directory jsp file and bean *.class file reside, currently my setting are as follows.
Note: I am using tomcat server and my jsp and servlet files are running seccessfuly, there is any special change in classpath for java beans? if any please tell
My jsp file is in tomcat-->webapps-->jsp--><my file>
My bean (*.class) file-->webapps-->Root-->web-inf-->classes--><my file>
Pleae help me for the above problem.
Mubashar ([email protected])

According to J2EE standards:
The web appl directory structure should be:
WebAppRootDirectory
|
|---html, jsp, images etc
|
|---WEB-INF---
|---classes--
|---lib
|
|
1) Make sure WEB-INF is in capital letters
2) Place all ur beans in classes dir or sub-directory in
classes
3) In Tomcat place WebAppRootDirectory in webapps
directory
[email protected]

Calling RFC from JSP : development component

Hi everyone,
I created JSP that call RFC from SAP/R3.
I have problem with the DestinationService.
Without DCs, it worked very good.
But since I created a DC for my JSP project, I have exception at run time regarding
the java.lang.NoClassDefFoundError: com/sap/security/core/server/destinations/api/DestinationService.
Eventhough I add the specific jar, I get an excpetion.
Thanks for the help.
David

Go to the application-j2ee-engine.xml file and add following reference:
     <reference
          reference-type="weak">
          <reference-target
               provider-name="sap.com"
               target-type="interface">tcsecdestinations~interface</reference-target>
     </reference>

Calling method from jsp file

Hi
is it possible to call any method with in the class except handle method from jsp file?

You can call , but it would not be a good design approach.A droplet can do the same task for you.
otherwise :
eg :
<%@ page import="com.mypackage.MyClass"%>
for Static access :
<%
String test= MyClass.myMethod();
%>
for normal classes :
<%
MyClass object = new MyClass();
String test= object .myMethod();
%>
http://stackoverflow.com/questions/10918526/call-java-method-in-jsp-file
http://www.javaworld.com/javaworld/jw-05-2003/jw-0523-calltag.html?page=2
```
Praveer
Edited by: Praveer Rai on Mar 26, 2013 5:08 PM

Calling Report From JSP

Hello,
I would like to know whether it is possible to call Oracle Reports (Version 2.5/3.0) from JSP?.
Early reply is highly appreciated.
Thanks
Sekhar

Hi Kalyan,
I am assuming that your report itself is saved as a JSP. If you want to run the web layout inside your report (the JSP code in your report), you will have to deploy it to run it. If you want to run the paper layout of your report, you don't need to deploy it, but can call it by a URL in which you specify the report location.
http://machine:port/reports/rwservlet?report=...
Navneet.

Urgent: how to call servlet from JSP

I have a working servlet which returns a table in html format. I also updated the web.xml file according to the information I got from the previous message. My problem is how to correctly invoke the servlet in the JSF. I tried the following ways:
<jsp:include page="/report">
<jsparams>
<jsparam name="srcDev" value="#{Page1.srcDevice}"/>
<jsparam name="tgtDev" value="#{Page1.tarDevice}"/>
<jsparam name="format" value="complete"/>
</jsparams>
</jsp:include>
and
<frame src="/report?param1=val1&param2=val2" name="body" frameborder="YES" scrolling="YES" bordercolor="#999999" noresize>
both doesn't work.I am able to run the servlet within a html form. I just don't know what's the right syntax for calling the servlet inside a JSP page in JSF.
Can anybody help me?
Thanks,
Christine

Hi Christine,
This forum is exclusively for Sun Java Studio Creator related issues.
In case you are using Creator then you can find a sample application named RedirectionExample which makes use of a servlet and would be of help to you. You can find the tutorial on the following page:
http://developers.sun.com/prodtech/javatools/jscreator/reference/codesamples/sampleapps.html
Cheers
Giri :-)

Unable to call report from jsp - password contains special characters

Hi
I used the following url to call my oracle report from my JSP webpage but got the error mentioned below. It seems that this error occurs when i use the login id with password that contains special characters only. How can I overcome this problem?
Any help appreciated. Thx.
Regards,
Siti
URL used: -
"http://pc-325:8889/reports/rwservlet?server=pc-325&report=prodeff80120i&P_JDBCPDS="+vlogin1+"&destype=cache&desformat=pdf&paramform=no&p_type="+p_type;
Error encountered: -
REP-163: Invalid value for keyword DESTYPE.
Valid options are FILE, PRINTER, MAIL, INTEROFFICE, or CACHE.

Hi Stefan,
Many of the customers are located in hungary and they have created the userid using their keyboard. Hence for now I already have a userid with that hungarian characters, in the SAP system.
Only I would request for the help on how to interface these characters in SAP Business connector to call RFC.
Thanks,

Calling JavaBean From JSP

Similar Messages

Maybe you are looking for