problem in getting mail exchange records(MX) using DNS in java

problem in getting mail exchange records(MX) using DNS in java

Hi,

jsp file:

<%@page import="javax.naming.NamingEnumeration"%>
<%@page import="javax.naming.Context"%>
<%@page import="java.util.Hashtable"%>
<%@page import="javax.naming.directory.Attribute"%>
<%@page import="javax.naming.directory.Attributes"%>
<%@page import="javax.naming.directory.InitialDirContext"%>
<%@page import="javax.naming.directory.DirContext"%>

<%

try{

InitialDirContext context = new InitialDirContext();
String tempdomain = "dns:/gmail.com";
Attributes attributes = context.getAttributes(tempdomain, new String[]{"MX"});
out.println("attributes...."+attributes);
Attribute attributeMX = attributes.get("MX");
out.println("attributeMX...."+attributeMX);

}

catch(Exception e){

out.println("Error ****"+e);
e.printStackTrace();;
}

%>

Error:

javax.naming.NotContextException: Not an instance of DirContext 


complete error stack trace:

SEVERE: javax.naming.NotContextException: Not an instance of DirContext
        at javax.naming.directory.InitialDirContext.getURLOrDefaultInitDirCtx(InitialDirContext.java:92)
        at javax.naming.directory.InitialDirContext.getAttributes(InitialDirContext.java:123)
        at org.apache.jsp.dummy_jsp._jspService(dummy_jsp.java from :73)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:403)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:492)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:378)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
        at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1534)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
        at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:389)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
        at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98)
        at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
        at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:326)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:227)
        at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:170)
        at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:822)
        at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:719)
        at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1013)
        at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
        at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
        at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
        at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
        at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
        at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
        at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
        at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
        at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
        at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
        at java.lang.Thread.run(Thread.java:619)

Note : I am using glassfish v3. above code works fine in tomcat.

Thanks, B.Sucharitha.

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