Hi all,
please can someone confirm whether I need to clarify anything in my
question or take a different approach since I have had no replies and am
anxious to make sure I am doing all I can to seek help in the correct
way. Please correct me if my approach is wrong!
many thanks
Iain
I D B Major wrote:
Hi
I am a student trying to set up a project using JSP with JSTL custom
tags to provide dynamic pages to allow a web-based ticketing system
for independent cinemas. I am at the early stages of testing that I
can use the technologies. I have installed and configured Tomcat to
allow password protection to the site and I have embedded a McKoi
database which I can access and use to do insert, update and delete
queries using a test JSP page which has customised JSTL tags that are
used to run the SQL query on the database.
I am now trying to display data from two separate databases. I can get
each to display separately but not both at once. My issues seem to be
around the details held in web.xml which are as follows;
<context-param>
<param-name>javax.servlet.jsp.jstl.sql.dataSource</param-name>
<param-value>jdbc/mydb</param-value>
</context-param>
<resource-ref>
<description>DB Connection</description>
<res-ref-name>jdbc/mydb</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
<context-param>
<param-name>javax.servlet.jsp.jstl.sql.dataSource</param-name>
<param-value>jdbc/curzon</param-value>
</context-param>
<resource-ref>
<description>DB Connection</description>
<res-ref-name>jdbc/curzon</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
If I change the name of either of the <param-name> then the other will
work and allow database access to that database (ie <Resource> details
in server.xml are correctly recorded) but the one which is altered is
not available so that Tomcat displays an error message to say the
table requested is not found;
org.apache.jasper.JasperException: javax.servlet.jsp.JspException:
select * from Film
: Table 'APP.Film' was not found.
I have googled and googled, read the apache website in all areas I can
think of to look up and have asked my tutor for help. All without
success. I have discovered that the <param-name> given above is a
default so I tried adjusting the names (setting first one and then the
other to javax.servlet.jsp.jstl.dataSource.other or
javax.servlet.jsp.jstl..otherdataSource or other.dataSource) and even
removing the <context-param> altogether but none of these work.
Please can someone point me in the right direction for how to find out
what the <param-name> needs to be set to in order to allow two
databases to be accessed at once?
many thanks,
Iain M
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