FAIL - Application at context path Hello could not be started

Question

I m trying to deploy new web application in Tomcat 6 0  but whenever I click on start button  I repeatedly getting  FAIL - Application at context path  Hello could not be started  Other deployed application running fine  whenever I click on start button  But why not this application   web-xml     lt web-app xmlns  http   java sun com xml ns j2ee          xmlns xsi  http   www w3 org 2001 XMLSchema-instance           xsi schemaLocation  http   java sun com xml ns j2ee http   java sun com xml ns j2ee web-app 2 4 xsd           version  2 4  gt    lt servlet gt   lt servlet-name gt j security check lt  servlet-name gt   lt servlet-class gt EmailHander lt  servlet-class gt   lt  servlet gt    lt login-config gt   lt auth-method gt FORM lt  auth-method gt   lt form-login-config gt   lt form-login-page gt  login jsp lt  form-login-page gt   lt form-error-page gt  fail login html lt  form-error-page gt   lt  form-login-config gt   lt  login-config gt   lt web-app gt    This is what Exception I m getting in catalina log file   Jan 23  2010 6 49 31 PM org apache catalina startup ContextConfig applicationWebConfig SEVERE  Parse error in application web xml file at jndi  localhost Hello WEB-INF web xml org xml sax SAXParseException  XML document structures must start and end within the same entity      at com sun org apache xerces internal parsers AbstractSAXParser parse AbstractSAXParser java 1231      at com sun org apache xerces internal jaxp SAXParserImpl JAXPSAXParser parse SAXParserImpl java 522      at org apache tomcat util digester Digester parse Digester java 1644      at org apache catalina startup ContextConfig applicationWebConfig ContextConfig java 365      at org apache catalina startup ContextConfig start ContextConfig java 1066      at org apache catalina startup ContextConfig lifecycleEvent ContextConfig java 261      at org apache catalina util LifecycleSupport fireLifecycleEvent LifecycleSupport java 119      at org apache catalina core StandardContext start StandardContext java 4339      at org apache catalina manager ManagerServlet start ManagerServlet java 1249      at org apache catalina manager HTMLManagerServlet start HTMLManagerServlet java 612      at org apache catalina manager HTMLManagerServlet doGet HTMLManagerServlet java 136      at javax servlet http HttpServlet service HttpServlet java 617      at javax servlet http HttpServlet service HttpServlet java 717      at org apache catalina core ApplicationFilterChain internalDoFilter ApplicationFilterChain java 290      at org apache catalina core ApplicationFilterChain doFilter ApplicationFilterChain java 206      at org apache catalina core StandardWrapperValve invoke StandardWrapperValve java 233      at org apache catalina core StandardContextValve invoke StandardContextValve java 191      at org apache catalina authenticator AuthenticatorBase invoke AuthenticatorBase java 525      at org apache catalina core StandardHostValve invoke StandardHostValve java 128      at org apache catalina valves ErrorReportValve invoke ErrorReportValve java 102      at org apache catalina core StandardEngineValve invoke StandardEngineValve java 109      at org apache catalina connector CoyoteAdapter service CoyoteAdapter java 293      at org apache coyote http11 Http11Processor process Http11Processor java 849      at org apache coyote http11 Http11Protocol Http11ConnectionHandler process Http11Protocol java 583      at org apache tomcat util net JIoEndpoint Worker run JIoEndpoint java 454      at java lang Thread run Thread java 619    What is the reason of that error in web-xml file

User · Answer

Is EmailHandler really the full name of your servlet class  i e  it s not in a package like com something EmailHandler  It has to be fully-qualified in web xml

User · Answer

I ve had the same problem  was missing a slash in servlet url in web xml  replace   lt servlet-mapping gt       lt servlet-name gt jsonservice lt  servlet-name gt       lt url-pattern gt jsonservice lt  url-pattern gt   lt  servlet-mapping gt    with   lt servlet-mapping gt       lt servlet-name gt jsonservice lt  servlet-name gt       lt url-pattern gt  jsonservice lt  url-pattern gt   lt  servlet-mapping gt

User · Answer

1st Reason could be the ending tag of your application s web xml file which could not have been closed properly   web xml might be ending with  lt web-app gt   but must end with  lt  web-app gt   2nd Reason which worked in my case could be the lib folder of your tomcat must contain the supporting jar file of your database   ojdbc on case of Oracle or sqljdbc in case of SqlServer

User · Answer

check web xml file maybe servletContextlistener not doing well   in my case i added servletContextlistener and let him an empty and gave me the same error  i tried to delete it from project files but it still  in web xml file  finally i delete it from the web xml and save the file   run the project and it stated successfully

User · Answer

You need to close the XML with  lt  web-app gt   not with  lt web-app gt

User · Answer

Your web xml ends with  lt web-app gt   but must end with  lt  web-app gt   Which by the way is almost literally what the exception tells you

[deployment] FAIL - Application at context path /Hello could not be started

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