Exception when using Apache POI in ADF

Question

Goodmorning;
i'm using jdev 11g, i m trying to use Apache POI to import the content of Microsoft XL file into my database.
i already do that succesfully on netbeans. but not on jdev.
first i download the POI package from the apache web site, and i create a librarie and add the jar files to the jdev by using Tools --> Manage Libraries, this is the list of the jar file : poi-3.6-20091214.jar, poi-contrib-3.6-20091214.jar, poi-ooxml-3.6-3-20091214.jar and poi-scratchpad-3.6-20091214.jar.
next, create a jsf page with a boutton, then i enable the binding of this page by using Design --> Page Properties --> component binding --> check Auto Bind
in the action method of the buton i put the following code :
public String cb1_action() throws FileNotFoundException, IOException {
Connection conn = null;
String url = "jdbc:mysql://localhost:3306/";
String dbName = "test";
String driver = "com.mysql.jdbc.Driver";
String username = "root";
String userPassword = "";
try {
InputStream fs = new FileInputStream("/home/Rachid/test1.xls");
HSSFWorkbook wb = new HSSFWorkbook(fs);
HSSFSheet sheet = wb.getSheetAt(0);
HSSFRow row = null;
for (Iterator rowIt = sheet.rowIterator(); rowIt.hasNext();) {
row = (HSSFRow) rowIt.next();
HSSFCell code = row.getCell(0);
HSSFCell nom = row.getCell(1);
HSSFCell dt = row.getCell(2);
java.util.Date date = dt.getDateCellValue();
System.out.println("code "+code+" % nom "+nom +" % date " +date);
try {
Class.forName(driver).newInstance();
} catch (ClassNotFoundException e) {
} catch (InstantiationException e) {
} catch (IllegalAccessException e) {
try {
conn = DriverManager.getConnection(url+dbName,username,userPassword);
} catch (SQLException e) {
Statement stmt = null;
try {
stmt = conn.createStatement();
} catch (SQLException e) {
String strQuery = "insert into importxl values ("+code+",'"+nom+"','"+date.getDay()+"/"+date.getMonth()+"/"+date.getYear()+"')";
System.out.println(strQuery);
try {
stmt.close();
} catch (SQLException e) {
try {
conn.close();
} catch (SQLException e) {
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
return null;
and when i run my page and click on the button, this exception page appear :
Error 500--Internal Server Error
javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/apache/poi/hssf/usermodel/HSSFWorkbook
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:277)
     at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
     at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
     at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:191)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:97)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:420)
     at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:60)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:420)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:247)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:157)
     at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:94)
     at java.security.AccessController.doPrivileged(Native Method)
     at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:313)
     at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:414)
     at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:138)
     at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.dms.wls.DMSServletFilter.doFilter(DMSServletFilter.java:330)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.doIt(WebAppServletContext.java:3684)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3650)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
     at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
     at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2268)
     at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2174)
     at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1446)
     at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
     at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
Caused by: javax.faces.el.EvaluationException: java.lang.NoClassDefFoundError: org/apache/poi/hssf/usermodel/HSSFWorkbook
     at org.apache.myfaces.trinidad.component.MethodExpressionMethodBinding.invoke(MethodExpressionMethodBinding.java:51)
     at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
     at org.apache.myfaces.trinidad.component.UIXCommand.broadcast(UIXCommand.java:190)
     at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:475)
     at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:756)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._invokeApplication(LifecycleImpl.java:698)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:285)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:177)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
     ... 35 more
Caused by: java.lang.NoClassDefFoundError: org/apache/poi/hssf/usermodel/HSSFWorkbook
     at Mybean.bean1.wrc(bean1.java:23)
     at Mybean.MybeanImport.cb1_action(MybeanImport.java:53)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at com.sun.el.parser.AstValue.invoke(AstValue.java:157)
     at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:283)
     at org.apache.myfaces.trinidad.component.MethodExpressionMethodBinding.invoke(MethodExpressionMethodBinding.java:46)
     ... 43 more
Caused by: java.lang.ClassNotFoundException: org.apache.poi.hssf.usermodel.HSSFWorkbook
     at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:280)
     at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:253)
     at weblogic.utils.classloaders.ChangeAwareClassLoader.findClass(ChangeAwareClassLoader.java:56)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
     at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:177)
     at weblogic.utils.classloaders.ChangeAwareClassLoader.loadClass(ChangeAwareClassLoader.java:37)
     ... 52 more

Answer 1

Hi John,
Ya ur right i too agree we can go for shared Libraries for reusable or massive apps but we still dont know whether OP is gng on the way and also i never said dont go for shared Libraries+
May be he will be running the application locally for any testing purpose..... if it so i have suggested him not to keep the jar files in the folders outside the project....
Why becoz incase the jar file kept in outside folder,
if the folder gets deleted or some times if it kept in any shared folder and user loses the permission error will be thrown it cant be traced why the error gets throwned....
if the jar is gng to be referred from local best way is to keep it in the project folder itself.............
Regards,
Suganth.G