Hanging application while created workbook XSSF (Apache POI)

Similar Questions

• Exception if you use Apache POI in ADF

  Goodmorning;
  
  I use jdev 11g, I'm trying to use Apache POI to import the content of Microsoft XL file in my database.
  
  I already do this with success on netbeans. but not on jdev.
  
  first of all, I have download the POI package on the site web apache, and I create a library and add the jdev jar files 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-block-notes - 3.6 - 20091214.jar.
  
  Create a page with a button jsf, then activate the link to this page using the design-> Page-> binding component properties-> check Auto link
  
  in the action of the buton method, 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);
  Line HSSFRow = null;
  for (Iterator Tricard = sheet.rowIterator (); rowIt.hasNext ();) {
  
  line = rowIt.next () (HSSFRow);
  Code HSSFCell = row.getCell (0);
  Name HSSFCell = row.getCell (1);
  HSSFCell dt = row.getCell (2);
  java.util.Date date = dt.getDateCellValue ();
  System.out.println ("code" + code + "% name" + name + "% 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 exception) e {}
  e.printStackTrace ();
  } catch (IOException e) {}
  e.printStackTrace ();
  }
  Returns a null value.
  }
  }
  
  
  
  and when I run my page and click on the button, this exception page appears:
  
  Error 500 - Internal server error
  
  javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/apache/poi/rich/usermodel/HSSFWorkbook
  at javax.faces.webapp.FacesServlet.service(FacesServlet.java:277)
  to 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)
  to org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$ FilterListChain.doFilter (TrinidadFilterImpl.java:420)
  at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:60)
  to 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)
  to 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)
  to weblogic.servlet.internal.WebAppServletContext$ ServletInvocationAction.doIt (WebAppServletContext.java:3684)
  to 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/rich/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/rich/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)
  ... more than 43
  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

  Have you checked "Deploy default" when you created the library?

  John

• How to create multiple thumbnail images while creating the Image assets

  Hi all!

  
  

  I have a requirement to create several thumbnail images (of different sizes), while creating new assets of image. These vignettes must be associated with different attributes after the recording of assets. I thought you used miniature filter, but I read that it uses a library of swing, it's very very inefficient memory-wise and we can experience the memory leak and crashes with only a very limited number of images... Another solution is to set up the filter citing ImageMagick with a system exec: it's fast, it does not have the memory and it also generates a much greater quality of thumbnail image resizer that comes with swing.

  
  

  What do you think, and how can I implement this?

  
  

  Thank you very much!
  

  Hello Elena,

  We noticed some performance issues in our current client, so we changed the miniature filter by default:

  A temporary file is no longer used for the input image. The source image is used directly, because it is not changed by the thumbnail generator.

  This avoids some performance issues, we have detected. First of all, because of the way the image has been copied (a byte is read and written each time), and second, because of some file systems environments run badly.

  In addition, it relies on "deleteOnExit", which can produce an impact on the performance of the application server, as the JAVA virtual machine must maintain a list of files to delete when leaving, and which consumes memory. It is even more problematic on servers that are not restarted very often.  And if at the end the application server is not normally off, these files would not be removed.

  On the other hand it seems that the thumbnail generator is not necessary that the image source file ends with the extension of the right.

  Now we use the provided source image directly, it's a ".tmp" instead of a file (for example) the file ".gif".

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• [ADF, JDev12.1.3] Problem of formatting attribute VO MONEY when exports it as an Excel file using apache.poi

  Hallo,

  I have a VO with an attribute based on the field of database of MONEY.

  In the configuration of the VO for the attribute I put:

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  • In the "Indications of the UI" tab: Format type and Type like the image below

  

  These settings allow the value of the attribute (in the table, inputText) appears with thousands and decimal separator that according to my language - Italian - are. (point) and, (comma).

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• Difficulty facing export .xlsx by Apache POI

  I use Jdeveloper 11.1.1.7

  I need to export .xlsx file af:table using Apache POI. I have not used all the attributes of VO in my af:table. I need to export only the visible columns in the same order as in the user interface.  The user may change the order of the columns in the user interface, so I need to look at also.

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  Thank you and best regards,

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  I am totally new to processing the files using Java Microsoft Excel and embarks on Apache POI. Now it seems that I might be completely out of luck because of Excel files, I'm in the process.
  
  Now looking back, I realize account I got what I got with Excel file (.xls file) was opened in Excel 2007 and clicked on the "Save" button. And it's all OK POI learning by the transformation of this file. Now, after all the work I've done with this file, I trashed it and got a copy of the original Excel file - as is, without first loading in Excel 2007 and recording - and run my java program on it. And I got the following error message speaks BIFF5 and BIFF8:
  
  
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