I've been learning about connection pools, and I have gotten one working by using Tomcat's PoolProperties. Now I would like to set one up using a context.xml file with Tomcat and IntelliJ, but I can't get this to work. How is this done?
A new project with a 4.0 Web Application framework can automatically create a web/WEB-INF directory with a web.xml file, but the web/META-INF directory containing a context.xml file is not created. If I do create web/META-INF/context.xml myself through the Tool Window > Project, and I use this to set up a connection pool as shown below, the file seems to be ignored.
This is my guess as to what might be happening, though I'm sure this is filled with errors: A WAR file is a packaged directory that is sent to Tomcat in an arrangement that Tomcat understands. web/WEB-INF/web.xml is a required file that is needed for a variety of reasons, one of which is to set up servlets. web/META-INF/context.xml is optional, and thus by default, IntelliJ does not create it. When a web/META-INF/context.xml is created manually, it must also be included into the WAR file otherwise IntelliJ will not send it to Tomcat.
Even if the previous paragraph is true though, I still have not gotten Tomcat to use context.xml after trying to add it to the WAR. Maybe I didn't add it correctly.
context.xml
<?xml version="1.0" encoding="UTF-8" ?> <Context> <Resource name="jdbc/sql_connection_03" auth="Container" driverClassName="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost:3306/follow_db_01" username="root" password="pass" maxactive="100" maxIdle="30" maxWait="10000" logAbandoned="true" removeAbandoned="true" removeAbandonedTimeout="60" type="java.sql.DataSource"/> </Context> index.jsp
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <sql:query var="rs" dataSource="jdbc/sql_connection_03"> select ID, Description, PackageSize from products; </sql:query> <html> <head> <title>Index</title> </head> <body> <c:forEach var="row" items="${rs.rows}"> ${row.ID}<br> ${row.Description}<br> ${row.PackageSize}<br> </c:forEach> </body> </html> 
