Hello,
I am testing a servlet, just the init() method like this:
public void testPostMethod() throws ServletException
{
InscribeServlet inscribeServlet = new InscribeServlet();
inscribeServlet.init(config);
}
I get a java.lang.NullPointerException when calling getServletContext()...
in the init() method, my servlet calls getServletContext().getRealPath(). I guess
there is where the exception occurs. It could also be in a call to get the DataSource
via InitialContext. Attached is the stack trace and the init() method of my Servlet.
Does anyone knows what am I doing wrong???? thanks in advance.
Jose
Stack Trace
============
test2:
[junit] Running com.cevex.servlet.TestInscribeServlet
[junit] Tests run: 1, Failures: 0, Errors: 1, Time elapsed: 1.562 sec
[junit] Testsuite: com.cevex.servlet.TestInscribeServlet
[junit] Tests run: 1, Failures: 0, Errors: 1, Time elapsed: 1.562 sec
[junit] Testcase: testPostMethod took 1.514 sec
[junit] Caused an ERROR
[junit] null
[junit] java.lang.NullPointerException
[junit] at
javax.servlet.GenericServlet.getServletContext(GenericServlet.java:204)
[junit] at com.cevex.servlet.InscribeServlet.init(Unknown Source)
[junit] at javax.servlet.GenericServlet.init(GenericServlet.java:256)
[junit] at com.cevex.servlet.TestInscribeServlet.testPostMethod(Unknown Source)
[junit] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[junit] at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
[junit] at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[junit] at
org.apache.cactus.internal.server.ServerTestCaseDelegate.runServerTest(ServerTestCaseDelegate.java;org/apache/cactus/util/log/LogAspect.aj[1k]:214)
[junit] at org.apache.cactus.ServletTestCase.runTest(ServletTestCase.java:280)
[junit] at org.apache.cactus.ServletTestCase.runBare(ServletTestCase.java:251)
[junit] at
org.apache.cactus.server.AbstractWebTestCaller.doTest(AbstractWebTestCaller.java:156)
[junit] at
org.apache.cactus.server.AbstractWebTestController.dispatch133_handleRequest(AbstractWebTestController.java;org/apache/cactus/util/log/LogAspect.aj[1k]:130)
[junit] at
org.apache.cactus.server.AbstractWebTestController.around133_handleRequest(AbstractWebTestController.java;org/apache/cactus/util/log/LogAspect.aj[1k]:1158)
[junit] at
org.apache.cactus.server.AbstractWebTestController.handleRequest(AbstractWebTestController.java;org/apache/cactus/util/log/LogAspect.aj[1k]:101)
[junit] at
org.apache.cactus.server.ServletTestRedirector.dispatch160_doPost(ServletTestRedirector.java;org/apache/cactus/util/log/LogAspect.aj[1k]:125)
[junit] at
org.apache.cactus.server.ServletTestRedirector.around160_doPost(ServletTestRedirector.java;org/apache/cactus/util/log/LogAspect.aj[1k]:1158)
[junit] at
org.apache.cactus.server.ServletTestRedirector.doPost(ServletTestRedirector.java;org/apache/cactus/util/log/LogAspect.aj[1k]:109)
[junit] at
org.apache.cactus.server.ServletTestRedirector.dispatch159_doGet(ServletTestRedirector.java;org/apache/cactus/util/log/LogAspect.aj[1k]:96)
[junit] at
org.apache.cactus.server.ServletTestRedirector.around159_doGet(ServletTestRedirector.java;org/apache/cactus/util/log/LogAspect.aj[1k]:1158)
[junit] at
org.apache.cactus.server.ServletTestRedirector.doGet(ServletTestRedirector.java;org/apache/cactus/util/log/LogAspect.aj[1k]:92)
[junit] at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
[junit] at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
[junit] at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
[junit] at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
[junit] at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:260)
[junit] at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
[junit] at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[junit] at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[junit] at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
[junit] at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
[junit] at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[junit] at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[junit] at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415)
[junit] at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
[junit] at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
[junit] at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
[junit] at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
[junit] at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
[junit] at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
[junit] at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:509)
[junit] at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
[junit] at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[junit] at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[junit] at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
[junit] at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
[junit] at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[junit] at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[junit] at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
[junit] at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:432)
[junit] at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:386)
[junit] at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:534)
[junit] at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:530)
[junit] at java.lang.Thread.run(Thread.java:536)
And the init() method of my Servlet
===================================
public void init() throws CevexServletException
{
try
{
// get the initial context
Context initCtx = new InitialContext();
Context envCtx = (Context) initCtx.lookup("java:comp/env");
// get the datasource
ds = (DataSource) envCtx.lookup("jdbc/cevexDB");
/* something is worng with the mail session, check later */
//session = (Session) envCtx.lookup("mail/Session");
// initialize new mail seession
Properties props = new Properties();
props.put("mail.smtp.host", "localhost");
Session session = Session.getDefaultInstance(props, null);
session.setDebug(false);
// Read email strings from files
String realPath = getServletContext().getRealPath("/");
mailInscripcionMasc = new CevexMail(session, realPath +
getInitParameter("mailInscripcionMasc"));
mailInscripcionFem = new CevexMail(session, realPath +
getInitParameter("mailInscripcionFem"));
mailInscripcionConInvitacionMasc = new CevexMail(session, realPath +
getInitParameter("mailInscripcionConInvitacionMasc"));
mailInscripcionConInvitacionFem = new CevexMail(session, realPath +
getInitParameter("mailInscripcionConInvitacionFem"));
} // end try
.... catch statements
}
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