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Re: JNDI Lookup fails in JBoss AS 7 [java.naming.CommunicationException]
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created by <a href="http://community.jboss.org/people/abiya">abiya</a> in <i>JNDI and Naming</i> - <a href="http://community.jboss.org/message/638860#638860">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi Koushik,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I was trying to access in the init method of startupservlet</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left"><p><span style="color: #7f0055; font-size: 10pt;"><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p></span></p></p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="color: #7f0055; font-size: 10pt;"><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p></span></p><p><strong style="color: #7f0055; font-size: 10pt;"><strong style="color: #7f0055; font-size: 10pt;"><p align="left">public <span style="font-size: 10pt; color: #000000;"> </span><strong style="color: #7f0055; font-size: 10pt;"><strong style="color: #7f0055; font-size: 10pt;">class</strong></strong><span style="font-size: 10pt; color: #000000;"> <span style="text-decoration: underline;">StartupServlet</span> </span><strong style=": ; color: #7f0055; font-size: 10pt;">extends </strong><div><div align="left"><span style="color: #000000; font-size: 10pt;">HttpServlet</span></div></div></p></strong></strong><div> </div></p><p><span style="font-size: 10pt;"><p><p><p align="left">{</p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p></p></p></span></p><p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left"><div align="left"><span style="font-size: 10pt; color: #3f7f5f;"><div align="left"><span style="font-size: 10pt; color: #3f7f5f;">// Initializing Logger.</span></div></span></div></p><p><span style="font-size: 10pt;"><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p></span></p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left"><div align="left"><span style="font-size: 10pt; color: #3f7f5f;"><div align="left"><span style="font-size: 10pt; color: #3f7f5f;">//private static MLogger s_logger = new MLogger(ServeImagesServlet.class);</span></div></span></div></p><p><span style="font-size: 10pt;"><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p></span></p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left"><div align="left"><span style="font-size: 10pt; color: #3f5fbf;"><div align="left"><span style="font-size: 10pt; color: #3f5fbf;">/**</span></div></span></div></p><span style="color: #3f5fbf; font-size: 10pt;"><p align="left">* <span style="text-decoration: underline;">init</span> method</p><p align="left">*/</p></span><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p></p><p><span style="font-size: 10pt;"><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p></span><strong style="color: #7f0055; font-size: 10pt;"><strong style="color: #7f0055; font-size: 10pt;">public</strong></strong><span style="font-size: 10pt;"> </span><strong style="color: #7f0055; font-size: 10pt;"><strong style="color: #7f0055; font-size: 10pt;">void </strong></strong><span style="font-size: 10pt;">init(ServletConfig a_config) </span><strong style="color: #7f0055; font-size: 10pt;"><strong style="color: #7f0055; font-size: 10pt;">throws </strong></strong><div><span style="font-size: 10pt;"> ServletException</span></div></p><p><span style="font-size: 10pt;"><p><p align="left">{</p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p></p></span></p><p><strong style="color: #7f0055; font-size: 10pt;"><strong style="color: #7f0055; font-size: 10pt;">super</strong></strong><div><span style="font-size: 10pt;">.init(a_config);</span></div></p><p><span style="font-size: 10pt;"><p align="left">System.<em style="color: #0000c0; font-size: 10pt;"><em style="color: #0000c0; font-size: 10pt;">out</em></em><span style="font-size: 10pt;">.println(</span><span style="color: #2a00ff; font-size: 10pt;">"StartupServlet.init() called."</span><div align="left"><span style="font-size: 10pt;">);</span></div></p></span><span style="font-size: 10pt;"><p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p></p></span></p><p><p align="left"><strong style="color: #7f0055; font-size: 10pt;"><strong style="color: #7f0055; font-size: 10pt;">try</strong></strong></p></p><p><p align="left"><div align="left"><span style="font-size: 10pt;">{</span></div></p><div> </div></p><p><span style="font-size: 10pt;"><p align="left">InitialContext ctx = <strong style="color: #7f0055; font-size: 10pt;"><strong style="color: #7f0055; font-size: 10pt;">new</strong></strong><div align="left"><span style="font-size: 10pt;"> InitialContext();</span></div></p></span><span style="font-size: 10pt;"><p><span style="font-size: 10pt;">DataSource ds = (javax.sql.DataSource) ctx.lookup(</span><span style="color: #2a00ff; font-size: 10pt;">"<span style="color: #333333;">java:jboss/datasources/Test</span>"</span><span style="font-size: 10pt;">);</span></p></span><span style="font-size: 10pt;"><p><span style="font-size: 2;"><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p></span><span style="font-size: 2;"><p align="left">System.<em style="color: #0000c0; font-size: 10pt;"><em style="color: #0000c0; font-size: 10pt;">out</em></em><span style="font-size: 10pt;">.println(</span><span style="color: #2a00ff; font-size: 10pt;">"context info in StratupServlet init method...."</span></p></span><span style="font-size: 2;">+ds);</span><span style="font-size: 2;"><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p></span><span style="font-size: 10pt;"><p align="left">} </p></span><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><strong style="color: #7f0055; font-size: 10pt;"><strong style="color: #7f0055; font-size: 10pt;">catch</strong></strong><span style="font-size: 10pt;">(NamingException e) {</span></p><span style="font-size: 10pt;"><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p></span><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="color: #3f7f5f; font-size: 10pt;">// </span><strong style="color: #7f9fbf; font-size: 10pt;"><strong style="color: #7f9fbf; font-size: 10pt;">TODO</strong></strong></p><p align="left"><div align="left"><span style="font-size: 10pt; color: #3f7f5f;"><div align="left"><span style="font-size: 10pt; color: #3f7f5f;">Auto-generated catch block</span></div></span></div></p><p><p><div><span style="font-size: 10pt;"><p align="left">e.printStackTrace();</p><p align="left">}</p><p>}</p><p style="min-height: 8pt; height: 8pt; padding: 0px;">  </p></span></div></p><span style="font-size: 10pt;"><p>And I get the following error,</p><p><span style="font-size: 10pt;">17:58:09,306 ERROR [stderr] (MSC service thread 1-2) javax.naming.NameNotFoundException: java:jboss/datasources/Test</span></p><p><span style="font-size: 10pt;">17:58:09,306 ERROR [stderr] (MSC service thread 1-2)  at org.jboss.as.naming.InitialContext.lookup(InitialContext.java:55)</span></p><p><span style="font-size: 10pt;">17:58:09,306 ERROR [stderr] (MSC service thread 1-2)  at org.jboss.as.naming.NamingContext.lookup(NamingContext.java:209)</span></p><p><span style="font-size: 10pt;">17:58:09,306 ERROR [stderr] (MSC service thread 1-2)  at javax.naming.InitialContext.lookup(Unknown Source)</span></p><p><span style="font-size: 10pt;">17:58:09,306 ERROR [stderr] (MSC service thread 1-2)  at com.common.web.servlet.StartupServlet.init(StartupServlet.java:40)</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p></span></p></p></span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><div class="mcePaste" id="_mcePaste" style="left: 0px; position: absolute; top: 0px;"></div><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I get similar error when I try to access from init method of filter as well.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I have another basic question,</p><p>suppose I invoke a method in utility class from servlet.... will I be able to get the initialcontext using<div> </div></p><p><span style="font-size: 10pt;"><p>InitialContext ctx = <strong style="color: #7f0055; font-size: 10pt;"><strong style="color: #7f0055; font-size: 10pt;">new</strong></strong><span style="font-size: 10pt;"> InitialContext(); in the utility class?</span></p></span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;">  </p><p><span style="font-size: 10pt;">Thanks,</span></p><p><span style="font-size: 10pt;">Abiya</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p></div>
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