EL not working

[Sharmila Punde]

Dear All,
I am working on tomcat 5.5.28(latest release), where serlvets and jsp works fine.
Code of jsp is as -

    
        Person: ${person.name}
        <div>
        Servlet Engine:<%= session.getServletContext().getMajorVersion() %>.<%= session.getServletContext().getMinorVersion() %>
        </div>
        <div>
        JSP Engine:
        <%= JspFactory.getDefaultFactory().getEngineInfo().getSpecificationVersion()%>
         </div>
        <div>
        Application Server:
        <%= application.getServerInfo()%>
        </div>

And output of the jsp code is as -
Person: ${person.name}
Servlet Engine: 2.4
JSP Engine: 1.2
Application Server: Apache Tomcat/5.5.28

Into the web.xml

<el-ignored> false </el-ignored>

is added to

<jsp-config>

tag.

The files(jsp-api.jar(JSP 2.0 API), servlet-api.jar(Servlet 2.4 API), commons-el.jar (Commons Expression Language 1.0) mentioned into Into tomcat release notes are available into common/lib of tomcat file structure.

I have five questions -

1. Why output of jsp does not show JSP Engine: 2.0?
2. Is jsp engine version same as that of jsp-api.jar?
3. Why EL ${person.name} is not evaluated?
4. If jsp has page directive with isELIgnored, parsers throws invalid attribute error. And
jsp cannot be translated to .java file?
5. Is that the case, file jsp-api.jar along with tomcat 5.5.28 is not 2.0 version?

Please help me solve these problems?

Thanks in advance!

[raj malhotra]

May be your lib got corrupted due to manual overwriting of Jar.Best is reinstall tomcat and try again.If you still find this problem you should post here.

[Sharmila Punde]

Thanks Raj,
Let me give you more details, I downloaded apache-tomcat-5.5.28.tar.gz from http://tomcat.apache.org/download-55.cgi. My machine has Fedora os.
Now please see how i install tomcat-
gunzip apache-tomcat-5.5.28.tar.gz
Then i untared the apache-tomcat-5.5.28.tar into apache-tomcat-5.5.28/ folder.
All parts of web application works fine except EL.
I can see jsp-api.jar and other jar file into apache-tomcat-5.5.28/common/lib/.

Just now i reinstall tomcat and again it is having same problem.
Should i download only jsp-api.jar from jakarta, and check with it. But where to get only jsp-api.jar?
Thanks

[raj malhotra]

Try it from jsp-api.jar

[Christophe Verré]

<el-ignored> false </el-ignored>

You don't need this. If your web.xml is properly declared, EL will be automatically interpreted. Read this FAQ carefully. If it still doesn't work, post your web.xml here.

[Sharmila Punde]

Thanks Raj and Christophe,
I downloaded jsp-api.jar you given, it is still not working with that file. Do i have to put that file
in

/usr/java/jdk1.5.0_16/jre/lib/ext

. Because all these file are available into

tomcat_home/common/lib/

.

Christophe, just look at my web.xml please

  
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
    version="2.4">

    <jsp-config>
        <jsp-property-group>
            <url-pattern>*.jsp</url-pattern>
            <el-ignored> false </el-ignored>
            <scripting-invalid>
                false
            </scripting-invalid>
        </jsp-property-group>
    </jsp-config>
    
    <servlet>
        <servlet-name>Chapter8</servlet-name>
        <servlet-class>foo.Chapter8</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>Chapter8</servlet-name>
        <url-pattern>/Chap8</url-pattern>
    </servlet-mapping>
    
    <servlet>
        <servlet-name>Result</servlet-name>
        <jsp-file>/result.jsp</jsp-file>
        <init-param>
            <param-name>email</param-name>
            <param-value>[e-mail]</param-value>
        </init-param>
    </servlet>

    <servlet-mapping>
        <servlet-name>Result</servlet-name>
        <url-pattern>/pak.dum</url-pattern>
    </servlet-mapping>    
</web-app>
 

Thanks

[Christophe Verré]

It doesn't look wrong. What about your JSP file extension ? Is it ".jsp" ?

[Sharmila Punde]

Yes file name result.jsp and i access it using /result.jsp

[Christophe Verré]

Also, after you make changes to web.xml, make sure to clear Tomcat's cache. Remove the jsp-config tag from web.xml, clear the cache, and reaccess the page.

[Sharmila Punde]

Hi Christophe,
I removed jsp-config tag, cleared the browser cache. How to clear tomcat's cache. I just removed
.java and .class file related to result.jsp. Not getting the catch.

Thank you very much

[Christophe Verré]

I'm running out of idea here. The problem comes from the fact that, for some reason, JSP1.2 is being used. What is your CATALINA_HOME set to ?

[raj malhotra]

I feel only reason may be at run time server is referring wrong jar.May be there are more than two jars in the classpath and wrong one is declared before the correct one.

[Sharmila Punde]

Thanks Raj & Christophe
I will search the classpaths ,jars,CATALINA_HOME,CATALINA_BASE and will see it carefully
Regards

[Sharmila Punde]

Hello Christophe & Raj,
You are right, tomcat was looking for servlet and jsp jars into /usr/java/jdk1.5.0_16/jre/lib/ext. Now i have removed javax.servlet.jar(old version) and put jsp-api.jar and servlet-api.jar into /usr/java/jdk1.5.0_16/jre/lib/ext. But looks like these files are not proper, because now tomcat do not run
simple servlet. So will see downloading tomcat again. And do not know whether gunzip and untaring created
some problem. See tomcat release note

NOTE: The tar files in this distribution use GNU tar extensions, and must be untarred with a GNU compatible version of tar. The version of tar on Solaris and Mac OS X will not work with these files.

My machine is fedora 6. I had face this problem once before, file was looking intact in terms of size but we required to put it again to make it work.
Thanks for your cooperation. Hope now problem gets solve.
Regards