Hi Simon,
Thanks for the response but I don't think that is the issue. I can use the
<context-param> instead, but I want to use the initParam for the JSP page
which is named and mapped in the <servlet> element. Perhaps I'm still
missing something.
On Mon, Feb 10, 2020 at 12:00 PM Simon Funnell <simonfunn...@gmail.com>
wrote:
> In your web.xml you want:
>
> <context-param>
> <param-name>greeting_color</param-name>
> <param-value>green</param-value>
> </context-param>
>
> I think you have defined an initialization parameter for the servlet, not
> the context.
>
> On Mon, 10 Feb 2020 at 17:54, Richard Monson-Haefel <
> monsonhae...@gmail.com>
> wrote:
>
> > Hi,
> >
> > Tomcat version: 9.0.30
> > Operating System: macOS 10.15.2
> >
> > While I can access my initParam vis a JSP scriptlet I cannot access the
> > same initial paramter EL expression.
> >
> > Here is the JSP code I'm using
> >
> > <HTML>
> > <BODY>
> > <H1>
> > <font color="<%= config.getInitParameter("greeting_color")
> > %>">Hello</font><font color="black"> ${param.name} from hello.jsp</font>
> >
> > </H1>
> > color is ${initParam["greeting_color"]}
> > </BODY>
> > </HTML>
> >
> > Here is my web.xml declaring the initial parameters
> >
> > <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee";
> > xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
> > xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
> > http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd
> "
> > version="4.0"
> > metadata-complete="true">
> >
> >
> > <!-- JSP Mapping -->
> > <servlet>
> > <servlet-name>HiJsp</servlet-name>
> > <jsp-file>/hello.jsp</jsp-file>
> > <init-param>
> > <param-name>greeting_color</param-name>
> > <param-value>green</param-value>
> > </init-param>
> > </servlet>
> > <servlet-mapping>
> > <servlet-name>HiJsp</servlet-name>
> > <url-pattern>/hola/*</url-pattern>
> > </servlet-mapping>
> > </web-app>
> >
> > Here is the output (source)
> >
> > <HTML>
> > <BODY>
> > <H1>
> > <font color="green">Hello</font><font color="black"> richard from
> > hello.jsp</font>
> > </H1>
> > color is
> > </BODY>
> > </HTML>
> >
> > I don't understand why the JSP expression <%= %> works but the EL
> > expression ${ } doesn't. I've tried many variations and other EL
> implicit
> > objects I've tried worked fine.
> >
> > What am I missing?
> >
> > The WAR is attached for your convenience.
> >
> >
> >
> > --
> > Richard Monson-Haefel
> > https://twitter.com/rmonson
> > https://www.linkedin.com/in/monsonhaefel/
> >
> > ---------------------------------------------------------------------
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> > For additional commands, e-mail: users-h...@tomcat.apache.org
>
--
Richard Monson-Haefel
https://twitter.com/rmonson
https://www.linkedin.com/in/monsonhaefel/
