Calling Runtime.freeMemory() from jsp

Is this not possible?
Receiving compile error:
non-static method freeMemory() cannot be referenced from a static context

As the message says, freeMemory() isn't static. You need an instance of Runtime to get it from:
Runtime.getRuntime().freeMemory()

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Calling web service from JSP

Can anyone help??
I'm trying to call a webservice from within a JSP and i havent a clue how its done,
i have my IF and Impl and Client Coded and my stubs generated and service deployed and running, but i cannot figure out how to call the service from my JSP web-app.
Any help appreciated!

Hi ,
Its easy to call a WS from jsp what you can do is this. Think in manner that u will be keeping the client classes on a particular container, then in same container you can refrence the classes and can invoke service through a jsp..this works in my case.. it depends what kind of client do u want to create may be static or proxy or DII

Calling java class from jsp page

Dear Friends.
I wrote jsp page and java class.
Am calling java class from jsp page. after processing result,
I have to refresh jsp page from java class.
processing time may take 5 minutes or 1 minute etc. that depends on user.
Can It be possible ? if possible , How ?

Ok, I get a very strange error now:
org.apache.jasper.JasperException: Unable to compile class for JSPerror: An error has occurred in the compiler; please file a bug report (http://java.sun.com/cgi-bin/bugreport.cgi).
What is this??? Anyone?

How to call a webservice from JSP

I want to call a webservice from JSP? How can I do that .

Check out this OBE and I think it's pretty well documented in JDeveloper help.
http://www.oracle.com/technology/obe/obe1013jdev/10131/wsfromplsqlpackage/devwsfrom%20plsql.htm
Thanks, Rob

How to call Java Beans from JSP (eg.put them in a WAR or package)

Can anyone explain to me what are the steps and ways to call java beans from JSP?

1st, put the javabean classes in the right place:
the web-inf/classes/your_bean.class directory of corresponding web application
2nd in your jsp page:
<jsp:useBean id="obj_var_name" class="your_bean"/>
<jsp:setProperty name="obj_var_name" property="smthg" value="smthg_calue"/>
Micheal

Calling an EJB from jsp - ServletException

I am unable to call an EJB from jsp, unless I put the actuall classes of
          the EJB into the classpath. Is this the right way to do it?
          The exception is:
          Servlet failed with ServletException
          javax.servlet.ServletException: Servlet class: 'jsp_servlet._result'
          could not be loaded - the requested class wasn't found in the
          classpath:
          '/local/apps/bea/wlserver6.0/config/gmodomain/applications/.wl_temp_do_not_delete/wl_local_comp34107.war:/local/apps/bea/wlserver6.0/./config/gmodomain/applications/.wl_temp_do_not_delete/WEB-INF/_tmp_war_gmo_gmo_webwar:/local/apps/bea/wlserver6.0/config/gmodomain/applications/.wl_temp_do_not_delete/WEB-INF/_tmp_war_gmo_gmo_webwar'
          at
          weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl.java:532)
          at weblogic.servlet.jsp.JspStub.prepareServlet(JspStub.java:191)
          at weblogic.servlet.jsp.JspStub.prepareServlet(JspStub.java:148)
          at
          weblogic.servlet.internal.ServletStubImpl.getServlet(ServletStubImpl.java:306)
          at
          weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:208)
          at
          weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:246)
          at
          weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:1265)
          at
          weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:1622)
          at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
          at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
          where result.jsp is the jsp page calling the EJB. I did an import of the
          EJB classes in the jsp.
          like i said, it works if I put the bean classes in the classpath. But is
          it right?
          if I have these in the exploded format, do I need to put anything in the
          application web.xml under:
          wlserver6.0/config/gmodomain/applications/DefaultWebApp_gmo/WEB-INF ?
          redhat 6.2, wl6.0sp1
          here are the xml files:
          web.xml:
          <?xml version="1.0"?>
          <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application
          2.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
          
          <web-app>
          <display-name>My Web Application</display-name>
          <description>none</description>
          <ejb-ref>
          <ejb-ref-name>MyWeb</ejb-ref-name>
          <ejb-ref-type>Session</ejb-ref-type>
          <home>com.blah.ejb.myweb.WyWebHome</home>
          <remote>com.blah.ejb.myweb.MyWeb</remote>
          </ejb-ref>
          </web-app>
          weblogic.xml:
          <!DOCTYPE weblogic-web-app PUBLIC "-//BEA Systems, Inc.//DTD Web
          Application 6.0//EN"
          "http://www.bea.com/servers/wls600/dtd/weblogic-web-jar.dtd">
          <weblogic-web-app>
          <jsp-descriptor>
          <jsp-param>
          <param-name>
          pageCheckSeconds
          </param-name>
          <param-value>
          1
          </param-value>
          </jsp-param>
          <jsp-param>
          <param-name>
          verbose
          </param-name>
          <param-value>
          true
          </param-value>
          </jsp-param>
          <jsp-param>
          <param-name>compileCommand</param-name>
          <param-value>/local/apps/jdk1.3.0_02/bin/javac</param-value>
          </jsp-param>
          </jsp-descriptor>
          <reference-descriptor>
          <ejb-reference-description>
          <ejb-ref-name>MyWeb</ejb-ref-name>
          <jndi-name>MyWeb</jndi-name>
          </ejb-reference-description>
          </reference-descriptor>
          </weblogic-web-app>
          thanks,
          Gary


Did you package your JSPs in a WAR and your EJBs in a JAR and package the
          WAR and JAR in an EAR? That is how to do it in 6.0. Works well.
          Peace,
          Cameron Purdy
          Tangosol, Inc.
          http://www.tangosol.com
          +1.617.623.5782
          WebLogic Consulting Available
          "gmo" <[email protected]> wrote in message
          news:[email protected]...
          > I am unable to call an EJB from jsp, unless I put the actuall classes of
          > the EJB into the classpath. Is this the right way to do it?
          > The exception is:
          > Servlet failed with ServletException
          > javax.servlet.ServletException: Servlet class: 'jsp_servlet._result'
          > could not be loaded - the requested class wasn't found in the
          > classpath:
          >
          '/local/apps/bea/wlserver6.0/config/gmodomain/applications/.wl_temp_do_not_d
          elete/wl_local_comp34107.war:/local/apps/bea/wlserver6.0/./config/gmodomain/
          applications/.wl_temp_do_not_delete/WEB-INF/_tmp_war_gmo_gmo_webwar:/local/a
          pps/bea/wlserver6.0/config/gmodomain/applications/.wl_temp_do_not_delete/WEB
          -INF/_tmp_war_gmo_gmo_webwar'
          >
          > at
          >
          weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl.jav
          a:532)
          >
          > at weblogic.servlet.jsp.JspStub.prepareServlet(JspStub.java:191)
          >
          > at weblogic.servlet.jsp.JspStub.prepareServlet(JspStub.java:148)
          >
          > at
          >
          weblogic.servlet.internal.ServletStubImpl.getServlet(ServletStubImpl.java:30
          6)
          >
          > at
          >
          weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
          :208)
          >
          > at
          >
          weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
          :246)
          >
          > at
          >
          weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletCo
          ntext.java:1265)
          >
          > at
          >
          weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java
          :1622)
          >
          > at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
          >
          > at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
          >
          > where result.jsp is the jsp page calling the EJB. I did an import of the
          > EJB classes in the jsp.
          > like i said, it works if I put the bean classes in the classpath. But is
          > it right?
          > if I have these in the exploded format, do I need to put anything in the
          > application web.xml under:
          > wlserver6.0/config/gmodomain/applications/DefaultWebApp_gmo/WEB-INF ?
          >
          > redhat 6.2, wl6.0sp1
          >
          > here are the xml files:
          > web.xml:
          >
          > <?xml version="1.0"?>
          > <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application
          > 2.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
          >
          > 
          >
          > <web-app>
          > <display-name>My Web Application</display-name>
          > <description>none</description>
          > <ejb-ref>
          > <ejb-ref-name>MyWeb</ejb-ref-name>
          > <ejb-ref-type>Session</ejb-ref-type>
          > <home>com.blah.ejb.myweb.WyWebHome</home>
          > <remote>com.blah.ejb.myweb.MyWeb</remote>
          > </ejb-ref>
          > </web-app>
          >
          > weblogic.xml:
          >
          > <!DOCTYPE weblogic-web-app PUBLIC "-//BEA Systems, Inc.//DTD Web
          > Application 6.0//EN"
          > "http://www.bea.com/servers/wls600/dtd/weblogic-web-jar.dtd">
          > <weblogic-web-app>
          > <jsp-descriptor>
          > <jsp-param>
          > <param-name>
          > pageCheckSeconds
          > </param-name>
          > <param-value>
          > 1
          > </param-value>
          > </jsp-param>
          > <jsp-param>
          > <param-name>
          > verbose
          > </param-name>
          > <param-value>
          > true
          > </param-value>
          > </jsp-param>
          > <jsp-param>
          > <param-name>compileCommand</param-name>
          > <param-value>/local/apps/jdk1.3.0_02/bin/javac</param-value>
          > </jsp-param>
          > </jsp-descriptor>
          > <reference-descriptor>
          > <ejb-reference-description>
          > <ejb-ref-name>MyWeb</ejb-ref-name>
          > <jndi-name>MyWeb</jndi-name>
          > </ejb-reference-description>
          > </reference-descriptor>
          > </weblogic-web-app>
          >
          > thanks,
          >
          > Gary
          >
          >

Calling jar file from jsp - serious problem !

Hi there, I'm trying to call a jar from a jsp file. I need an import clause in my jsp, to the class I want to use.
I'm using eclipse, and while i"m writing "<%= " and the begining of my class name , he autocompletes it and automatically puts an import of my class in the top of the html. It is very convenient , but the problem is that he underling the class name (in the impot: <%@page import="myClass"%>), and I get "The import myClass cannot be resolved" error.
I got an advice to put my class in a package, since it was in a default package. I did it. But now I have 2 problems:
1. I can't run my jar in command window: java - jar myJar.jar. in gives me: Exception in thread "main" java.lang.NoClassDefFoundError....
2. I still get an error - "The import myClass cannot be resolved" in the jsp, although I threw the old jar (that his class I want to use was out of package), and brought a new jar after creating it.
I hope I managed to clarify myself. I'll be thankful of any help !!!

Hi MSoldier.
There are two ways to do this:
1) You use the java.lang.Runtime classes to start the java application in your JAR file, just like you would have done it from the command line. The Runtime class has three different exec() methods that can be used to run any program just like you would from the command line. Remember, using this method you will have to write everything just like if you run your Java application from the command line, incl. classpath etc. This way your Java application will be run as a separate process. When the application finishes the process is shutdown and the resources (RAM etc.) taken by it freed, just like when you shutdown any other application.
2) You can open the JAR file yourself from inside the JSP page, look inside the META-INF file to find the main class, and then calls the main class main method. There is an example of how to do this in the Java Tutorial available from Sun under the JAR files track. Check these links :
The Java Tutorial at Sun
http://java.sun.com/docs/books/tutorial/
The JAR File Tutorial at Sun
http://java.sun.com/docs/books/tutorial/jar/index.html
Opening JAR Files via the Java JAR File API
http://java.sun.com/docs/books/tutorial/jar/api/index.html
Note however, if you have just created some classes that you want to use from inside your JSP pages, and not a separate application that needs to be run separately, you should just include the JAR file with your custom classes inside the WEB-INF/lib directory. These classes are then automatically available to your JSP pages, just like the rest of the Java API.
I hope this answers your questions,
Kind Regards,
Jakob Jenkov
Software Architect
Jenkov Development
www.jenkov.com

How to call RDF report from JSP page

Dear all,
I want to call a RDF report from JSP page. I am creating the JSP page using j developer 10G.
Can anyone help me out in this case. Is there any tag or procedure or any other way by of that i can perform this work.
please help and send the reply on [email protected],[email protected]
thanks
Ashok

Hi Ashok,
You can use rwservlet - nothing really to do with JDeveloper. Once you have report server up and running (hint: read http://download-uk.oracle.com/docs/cd/B14099_19/bi.1012/b14048/toc.htm), you can call a report like this:
http://server:port/rwservlet?report=my_report.rdf&destype=cache&desformat=html&p_my_parameter=xxx etcHope this helps,
John

Calling a Report from Jsp

dear all....
I am trying to call a report, from a JSP page, that's th steps i did:
1- I created the report with Oracle Reports
2- I saved it as .jsp 'Wos.jsp'
3- I integrated it in a new project, under Jdevelopper, i added the library, reports_tld.jar, to the classpath,
4- I made a new page, with a link to the Wos.jsp
The problem looks to be simple, when i Run that Wos.jsp, i have these messages .....
Error(1): java.lang.ClassNotFoundException: oracle.reports.jsp.ReportTagExtraInfo
Error(2): Impossible de charger la classe taghandler : reports_tld.jar
does any one have any idea?
regards!

either you don't have the jar/classes in the right place or the classpath isn't set correctly

How to call java bean from jsp

hi
How to call a java bean from jsp page..
Is any other way to call javabean from jsp page apart from this sample code...
<jsp:useBean id="obj" class="com.devsphere.articles.calltag.TestBean"/>
thnx in advance

If you also use servlets, you can attach beans to the request or session and use them directly in your JSP's. So if you do:
request.setAttribute("name", yourBean);and then forward to a JSP, you can reference the bean like:
${requestScope.name}

Call Unix Script from JSP.

Hi,
I need to run a unix script from a JSP page.
JSP pages reside on a different machine.
How can i call the unix script resides on different machine from JSP.
Thanks,
Narendra

yah. I can access that machine telnet and having all credentials of that system.
Can you please share the code needed for this.
Thanks,
Narendra

When call jasper report from jsp, occur error

I define a class call createReport that has a function call doReport to create report.
If i call doReport from application, notthing's happened.
But if i call doReport from jsp file, it occurs error ( 500 error ).
jsp file :
<%@ page import="myBean.createReport"%>
<%! createReport myReport = new createReport();%>
<%myReport.doReport("c:\\myJasper.jasper");%>c:\\myJasper.jasper is the path of report.
Do you have some sugguestions to solve that error?

Gosh, you better ask someone from Jasper support to help you...

Call jpf method from jsp

Is there anyway to call a method in Controller.jpf from a jsp page? I want to have my jsp page call a method from the jpf controller through an onChange event in the select tag. Otherwise I will have to write a large amount of javascript directly into my jsp page and really defeats the purpose of the MVC architecture. Any help is greatly appreciated. Thanks in advance.

The jsp might look something like this:
<netui:form action="DoThisOnChange">

<netui:select dataSource"" optionsDataSource="" onChange="this.form.submit()"/>
</netui:form>
And in JPF declare action named "DoThisOnChange" and write the logic to be done on event "onChange".
--SJ

Calling Actuate report from JSP

Hi All:
I am working on a small web JSP project that is supposed to call several existing Actuate 5 reports. Could anyone please direct me to (or perhaps send me) some code samples on how that needs to be done.
Thank you.
Regards,
Vince Walters
[email protected]

Hi ,
am also having same Requirment like u.. Can u help me out How do i view the Actuate report from JSP???
Regards.

How to call Crystal Reports10 from JSP?

Hi!
I want to generate a crystal report based on the parameters from database which in turn will be taken from jsp page.Can anybody help me on this?
Thanks in advance!

http://www.businessobjects.com/products/dev_zone/java/default.asp?ref=devzone_main
Check their top 5 java downloads for documentation on how it works.

Calling Runtime.freeMemory() from jsp

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