asked on

init ServerConfig - ServerContext

What's the difference between :
1)
      public void init(){
            ServletConfig config=getServletConfig();
            urlErreur=config.getInitParameter("urlErreur");
            urlIndex=config.getInitParameter("urlIndex");
2)
      public void init(){
            ServletContext c=getServletContext();
            urlErreur=c.getInitParameter("urlErreur");
            urlIndex=c.getInitParameter("urlIndex");

rrz

>ServletConfig config=getServletConfig();
urlErreur=config.getInitParameter("urlErreur");
This refers to a parameter for a servlet. In context's web.xml file entries look like
<servlet>
.
.
<init-param>
<param-name>urlErreur</para-name>
<param-value>someValue</para-value>
</init-param>
</servlet>

>ServletContext c=getServletContext();
urlErreur=c.getInitParameter("urlErreur");
This refers to a context wide parameter. Its entry into the web.xml file looks like
<web-app ....>
.
.
.
<context-param>
<param-name>urlErreur</para-name>
<param-value>someValue</para-value>
</context-param>
</web-app>

SOLUTION

vikrant4u2

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matthew016

ASKER

So if I want to retrieve information that is specific to a servlet I use : ServletConfig

and to retrieve information that are shared for more servlets : ServletContext

or I didn't understand ?

ASKER CERTIFIED SOLUTION

rrz

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