Context.xml question , Thanks

Question

Hi, developers:
I would like to connect to another server using context.xml. I did like the following link: < a href="http://tomcat.apache.org/tomcat-5.5-doc/jndi-resources-howto.html"> link to instruction</a>
In the "JDBC Data Source" :4 Configure Tomcat's Resource Factory part said a Context.xml tshould be stored in the META-INF directory .
My problem is:
1) where is /META-INF so I can find the contect.xml. I using tomcat5.5 and find only at Tomcat5.5\conf\context.xml?
2) When I restart with my context.xml below, the tomcat can start but application can NOT.
Error msd: Http status 404 : The requested resource (/account App) is not available.
code of context.xml is:
<?xml version='1.0' encoding='utf-8'?>
<Context displayName="account" path="/accountApp" debug="0" reloadable="true" docBase="serverdb">
<Resource name="jdbc/dbinstance" auth="Container" type="javax.sql.DataSource"
factory="org.apache.tomcat.dbcp.dbcp.BasicDataSourceFactory"
driverClassName="oracle.jdbc.OracleDriver"
url="jdbc:oracle:thin:@//dburl:1522/"
username="accuser"
password="accpw"
maxActive="20"
maxIdle="10"
maxWait="120000"
removeAbandoned="true"
logAbandoned="true"
removeAbandonedTimeout="300"
testOnBorrow="true"
testOnReturn="true"
validationQuery="select 1 from dual" />
</Context>
is some one can give me a help to solve it. Thanks in advance

Answer 1

The "context" here is an artifact of the way that Tomcat works. It contains deployment information - the path to the application files, the JNDI mappings and various other bits and pieces.
The "context" of a web application is the path to which it is deployed within the application server. An application deployed to a context called "foo" would probably be accessed by the following URL:
http://localhost:8080/foo/And the application files would probably be stored somewhere like this:
C:\Program Files\Apache Software Foundation\Tomcat 5.5\webapps\fooTomcat keeps its context information EITHER in a file called server.xml or in a seperate file named after the application's context. So typically it will be in one of these files (for our "foo" application):
C:\Program Files\Apache Software Foundation\Tomcat 5.5\conf\server.xml
C:\Program Files\Apache Software Foundation\Tomcat 5.5\conf\Catalina\localhost\foo.xmlYou can create the entry in one of several ways:
1. Edit server.xml manually
2. Edit foo.xml manually
3. Use an application such as the admin webapp to deploy your application
4. Include a Context.xml file in the META-INF directory of the application
The last option allows you to specify the default values that you want the application to take up when you deploy it to Tomcat. This saves time during development, but may cause problems for your clients when they come to deploy the application themselves.
It is this last file that you seem to be talking about. You would normally create it as a directory and file within the source directory for your application, from which you build and deploy a WAR file. For example, you might build the following files and directories into foo.war:
C:\dev\foo\index.jsp
C:\dev\foo\WEB-INF\web.xml
C:\dev\foo\META-INF\MANIFEST.MF
C:\dev\foo\META-INF\Context.xml
This would be built to a WAR file called foo.war that represents a Zip of the contents of the C:\dev\foo directory. Deploying this will cause Tomcat to notice Context.xml and extract its contents into the conf/Catalina/localhost directory as foo.xml