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import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
public class MyServlet extends HttpServlet {
public void service(ServletRequest req, ServletResponse res)
throws ServletException, IOException {
res.setContentType("text/plain");
PrintWriter out = res.getWriter();
ServletContext context = getServletContext();
out.println("req.getServerName(): " + req.getServerName());
out.println("req.getServerPort(): " + req.getServerPort());
out.println("context.getServerInfo(): " + context.getServerInfo());
out.println("getServerInfo() name: " +
getServerInfoName(context.getServerInfo()));
out.println("getServerInfo() version: " +
getServerInfoVersion(context.getServerInfo()));
out.println("context.getAttributeNames():");
Enumeration e = context.getAttributeNames();
while (e.hasMoreElements()) {
String name = (String) e.nextElement();
out.println(" context.getAttribute(\"" + name + "\"): " +
context.getAttribute(name));
}
}
private String getServerInfoName(String serverInfo) {
int slash = serverInfo.indexOf('/');
if (slash == -1) return serverInfo;
else return serverInfo.substring(0, slash);
}
private String getServerInfoVersion(String serverInfo) {
// Version info is everything between the slash and the space
int slash = serverInfo.indexOf('/');
if (slash == -1) return null;
int space = serverInfo.indexOf(' ', slash);
if (space == -1) space = serverInfo.length();
return serverInfo.substring(slash + 1, space);
}
}
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Download: ServletGetAllServerRelatedParameters.zip( 89 k)