java.io.IOException: Server returned HTTP response code: 500 for URL: http://localhost/HSMS/xmlcomm.

[mallikarjun dontamsetti]

Hi,
I have an application that is developed on SWINGS and applet and servlet. My database will be on different system(server oracle database) and when i try to run the application it is giving the fallowing errors

java.io.IOException: Server returned HTTP response code: 500 for URL: http://localhost/HSMS/xmlcomm.do
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1241)
at mil.navy.hsms.xmlcomm.client.HSMSCommManager.sendReceiveEvent(HSMSCommManager.java:241)
at mil.navy.hsms.xmlcomm.client.HSMSCommManager.postEventSync(HSMSCommManager.java:128)
at mil.navy.hsms.xmlcomm.client.HSMSCommManager.postEvent(HSMSCommManager.java:115)
at mil.navy.hsms.client.ModelProxy$Implementation.hsmsEventHappened(ModelProxy.java:63)
at mil.navy.hsms.events.HSMSEventPublisher$Implementation.processHSMSEvent(HSMSEventPublisher.java:133)
at mil.navy.hsms.logon.client.HSMSLogin.processEventer(HSMSLogin.java:250)
at mil.navy.hsms.client.MainClientController.startApp(MainClientController.java:159)
at mil.navy.hsms.client.HSMSApplet.main(HSMSApplet.java:45)

my server error log is
[20/Jul/2011:17:04:40] info ( 2224): CORE3282: stdout: XMLCommServlet-17689439 Info: [] Error: Authentication has failed. Error as follows:com.rp.database.ConnectionManagerBroker::getConnectionManager::SQLException java.sql.SQLException: ConnectionPool:init()::SQLException--java.sql.SQLException: ConnectionPool:createConnection::SQLException java.sql.SQLException: Io exception: The Network Adapter could not establish the connection
[20/Jul/2011:17:04:40] failure ( 2224): for host 127.0.0.1 trying to POST /HSMS/xmlcomm.do, service-j2ee reports: StandardWrapperValve[xmlcomm]: WEB2792: Servlet.service() for servlet xmlcomm threw exception
java.lang.NullPointerException
at mil.navy.hsms.logon.LogonHSMSEvent.accept(LogonHSMSEvent.java:16)
at mil.navy.hsms.xmlcomm.server.XMLCommServlet.processRequest(XMLCommServlet.java:301)
at mil.navy.hsms.xmlcomm.server.XMLCommServlet.doPost(XMLCommServlet.java:54)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:807)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:908)
at org.apache.catalina.core.StandardWrapperValve.invokeServletService(StandardWrapperValve.java:771)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:322)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:509)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:212)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:509)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:209)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:509)
at com.iplanet.ias.web.connector.nsapi.NSAPIProcessor.process(NSAPIProcessor.java:161)
at com.iplanet.ias.web.WebContainer.service(WebContainer.java:580)


Please help me..

[Prasad Krishnegowda]

The servlet cannot establish a connection to the database, it tells authentication failed, are you sure, you are giving the correct credentials?

[mallikarjun dontamsetti]

We make this application some modifications as client requested that he don't want to enter user name and password then we remove that one give access to application directly.
It works fine in all systems but when we try it in a new laptop it is shoeing this error

[Prasad Krishnegowda]

Can you connect to oracle database from your laptop?

[mallikarjun dontamsetti]

yes i can access the data base from sql developer and shared folders in server but application is showing this server communication error