How to solve this java lang NoClassDefFoundError org apache commons io output DeferredFileOutputStream

Question

I am using the below code to upload a file in to tomcat5 5 and it gives me the following exception   java lang NoClassDefFoundError  org apache commons io output DeferredFileOutputStream  could you please help me to find it out   import java io File  import java io IOException  import java util Iterator  import java util List   import javax servlet ServletException  import javax servlet http HttpServlet  import javax servlet http HttpServletRequest  import javax servlet http HttpServletResponse   import org apache commons fileupload FileItem  import org apache commons fileupload FileItemFactory  import org apache commons fileupload FileUploadException  import org apache commons fileupload disk DiskFileItemFactory  import org apache commons fileupload servlet ServletFileUpload          Servlet implementation class FileUploadServlet     public class FileUploadServlet extends HttpServlet       private static final long serialVersionUID   1L                   see HttpServlet HttpServlet               public FileUploadServlet             super               TODO Auto-generated constructor stub                        see HttpServlet doGet HttpServletRequest request  HttpServletResponse response               SuppressWarnings  rawtypes       protected void doGet HttpServletRequest request  HttpServletResponse response  throws ServletException  IOException                           see HttpServlet doPost HttpServletRequest request  HttpServletResponse response              protected void doPost HttpServletRequest request  HttpServletResponse response  throws ServletException  IOException              TODO Auto-generated method stub         boolean isMultipart   ServletFileUpload isMultipartContent request           System out println  Status     isMultipart           if  isMultipart                FileItemFactory factory   new DiskFileItemFactory                ServletFileUpload upload   new ServletFileUpload factory                try                   List items   upload parseRequest request                   Iterator iterator   items iterator                    while  iterator hasNext                          FileItem item    FileItem  iterator next                         if   item isFormField                              String fileName   item getName                             String root   getServletContext   getRealPath                               File path   new File root     uploads                            if   path exists                                  boolean status   path mkdirs                                                       File uploadedFile   new File path         fileName                           System out println uploadedFile getAbsolutePath                             item write uploadedFile                                                         catch  FileUploadException e                    e printStackTrace                  catch  Exception e                    e printStackTrace                                    response sendRedirect  upload jsp               this is the jar i use commons-fileupload-1 2 2 jar

User · Answer

Solution  By default  Struts is using Apache    commons-io jar    for its file upload process  To fix it  you have to include this library into your project dependency library folder    Get Directly   Get    commons-io jar    from official website     http   commons apache org io    Get From Maven   The prefer way is get the    commons-io jar    from Maven repository  File   pom xml     lt dependency gt       lt groupId gt commons-io lt  groupId gt         lt artifactId gt commons-io lt  artifactId gt       lt version gt 1 4 lt  version gt     lt  dependency gt

User · Answer

use maven dependency    lt dependency gt      lt groupId gt org apache commons lt  groupId gt     lt artifactId gt commons-io lt  artifactId gt      lt version gt 1 3 2 lt  version gt    lt  dependency gt     or download commons-io 1 3 2 jar to your lib folder

User · Answer

You will have to download file from here https   commons apache org proper commons-io download io cgi and select https   prnt sc tk5ewt Now  Next add this downloaded files into your project  Right click to your project - gt Build path- gt Configure BuidPath - gt  https   prnt sc tk5d93

User · Answer

just put all apache comons jar and file upload jar in lib folder of tomcat

User · Answer

If you are receiving this error in a WebSphere container  then make sure you set your Apps class loading policy correctly  I had to change mine from the default to  parent last  and also    Single class loader for application    for the WAR policy  This is because in my case the commons-io  jar was packaged with in the application  so it had to be loaded first

User · Answer

The particular exception message is telling you that the mentioned class is missing in the classpath  As the org apache commons io package name hints  the mentioned class is part of the http   commons apache org io project  And indeed  Commons FileUpload has Commons IO as a dependency  You need to download and drop commons-io jar in the  WEB-INF lib as well  See also   How to upload files to server using JSP Servlet  How to add JAR libraries to WAR project without facing java lang ClassNotFoundException  Classpath vs Build Path vs  WEB-INF lib How do I import the javax servlet API in my Eclipse project

[servlets] How to solve this java.lang.NoClassDefFoundError: org/apache/commons/io/output/DeferredFileOutputStream?

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