super.init(config) calls init(config) in javax.servlet.GenericServlet
public void init(ServletConfig config) throws ServletException
{
_config = config;
log("init");
init();
}
If the call is missing, methods like getInitParameter, getServletName,
etc. do not work as well as logging methods. But, I think, there is not
serious consequences. There could be some problems if your servlet calls
getSelvletConfig to do any clean up job.
I think is a better practice to override init() method and not
init(ServletConfig config) method.
public void init() throws ServletException {
sc = getSelvletConfig().getServletContext() ;
try {
env = (Context) new InitialContext().lookup("java:comp/env");
...
Or even better
public void init() throws ServletException {
sc = getServletContext() ;
. . .
In init() method super().init() can be omitted safely.
Andrea Sodomaco
Andrea Sodomaco Consulenze Informatiche
Via Giacometti, 4 - 34146 TRIESTE
Tel.: 040 281648 / 338 3565702 - Fax: 040 46069349
www.sodomaco.it
-----Messaggio originale-----
Da: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Per conto di John Steel
Inviato: martedì 24 aprile 2007 17.05
A: resin-interest@caucho.com
Oggetto: [Resin-interest] What happens if you *don't* call
super.init(...)?
Just found (and corrected) a probable howler in a pretty busy servlet:
public void init(ServletConfig config) throws ServletException {
super.init(config);
sc = config.getServletContext();
try {
env = (Context) new InitialContext().lookup("java:comp/env");
pool = (javax.sql.DataSource)
env.lookup(System.getProperty("app.dbid"));
} catch (NamingException e) {
e.printStackTrace();
}
Locale.setDefault(Locale.ENGLISH);
logConfPath = sc.getRealPath("")+"WEB-INF/log/log.properties";
}
The super.init() line was missing. We didn't notice because it was
serving correctly, but have seen a gradual slowdown over a few days
usually cured by a restart. Could the missing line have caused it? If
not, what bad side effects could we have expected please?
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