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Struts & Hibernate
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| | | Helping setting appropriate prefix when using ServletContext.getResourceAsStream | Helping setting appropriate prefix when using ServletContext.getResourceAsStream 2006-12-21 - By James Dekker
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Hello there,
I am using JDK 1.5 & Tomcat 5.5.9 on WinXP...
Set up my init servlet which is supposed to load my log4j.properties
file from myapp/WEB-INF/log4j.properties.
Here's my init servlet's source listing:
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-- ---- ---- ---- -----
package com.acme.logging;
import java.io.File  ;
import java.io.IOException ;
import java.io.InputStream ;
import java.util.Properties ;
import javax.servlet.ServletException ;
import javax.servlet.http.HttpServlet ;
import org.apache.log4j.PropertyConfigurator ;
public class Log4jInitServlet extends HttpServlet {
public void init() throws ServletException {
// String prefix = getServletContext().getRealPath("/");
Properties p = new Properties();
String prefix = "./";
String file = getInitParameter("log4j-init-file");
File propFile = new File(prefix+file);
System.out.println("propFile path is: " + propFile);
try {
InputStream is = getServletContext().getResourceAsStream("propFile");
if(!propFile.exists()){
System.out.println("log4j.properties not found, " +
propFile.getAbsolutePath());
}
p.load(is);
is.close();
} catch(IOException e) {
e.printStackTrace();
}
PropertyConfigurator.configureAndWatch(propFile.getAbsolutePath(),10000
);
}
}
Here's my web.xml file:
-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ------
-- ---- ---- ---- -----
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<display-name>MySampleApp</display-name>
<description>
MySampleApp
</description>
<servlet>
<servlet-name>MySampleAppServlet</servlet-name>
<servlet-class>com.acme.MySampleAppServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>MySampleAppServlet</servlet-name>
<url-pattern>/app</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>log4j-init</servlet-name>
<servlet-class>com.acme.logging.Log4jInitServlet</servlet-class>
<init-param>
<param-name>log4j-init-file</param-name>
<param-value>WEB-INF\log4j.properties</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>xml-config-init</servlet-name>
<servlet-class>com.acme.config.XmlConfigInitServlet</servlet-class>
<init-param>
<param-name>xml-config-file</param-name>
<param-value>WEB-INF\attributes-config.xml</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
</web-app>
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-- ---- ---- ---- -----
Now, when I deploy my app and run Tomcat this is what it says in the Console:
-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ------
-- ---- ---- ---- -----
Dec 21, 2006 4:53:14 PM org.apache.coyote.http11.Http11Protocol init
INFO: Initializing Coyote HTTP/1.1 on http-8080 (See http://ttp-8080.ora-code.com)
Dec 21, 2006 4:53:14 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 847 ms
Dec 21, 2006 4:53:14 PM org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
Dec 21, 2006 4:53:14 PM org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/5.5.9
Dec 21, 2006 4:53:14 PM org.apache.catalina.core.StandardHost start
INFO: XML validation disabled
Dec 21, 2006 4:53:15 PM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive affiliates.war
Dec 21, 2006 4:53:16 PM org.apache.catalina.loader.WebappClassLoader
validateJarFile
INFO: validateJarFile(C:\DevTools\tomcat\jakarta-tomcat-5 (See http://cat-5.ora-code.com).5.9\webapps
\affiliates\WEB-INF\lib\servlet-api.jar)
- jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending
class: javax/servlet/Servlet
log4j:WARN No appenders could be found for logger
(org.apache.catalina.session.ManagerBase ).
log4j:WARN Please initialize the log4j system properly.
propFile path is: .\WEB-INF\log4j.properties
log4j.properties not found,
C:\DevTools\tomcat\jakarta-tomcat-5 (See http://cat-5.ora-code.com).5.9\bin\.\WEB-INF\log4j.properties
Dec 21, 2006 4:53:18 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 3778 ms
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-- ---- ---- ---- -----
How should I set the prefix in my Log4jInitServlet to point to:
%CATALINA_HOME%/webapps/mywebapp/
Thank you so much!
-JD
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