null pointer exception while uploading the file using struts 2

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er.s...@gmail.com

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Jun 2, 2013, 1:49:46 AM6/2/13

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login .jsp
<%@ page contentType="text/html; charset=UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
<head>
<title>Devmanuals.com-Hello World Struts Tutorial</title>
</head>

<body>
<h2>Struts 2 Login Example</h2>
<s:actionerror />
<s:form action="login" method="post" enctype="multipart/form-data">
    <s:textfield name="username" key="username" size="20" />
    <s:password name="password" key="password" size="20" />
    <s:file name="myFile" key="myFile" />
    <s:submit value="upload" align="center" />
</s:form>
</body>
</html>

   struts.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
    <constant name="struts.enable.DynamicMethodInvocation"
        value="false" />
    <constant name="struts.devMode" value="false" />
    <constant name="struts.custom.i18n.resources"
        value="ApplicationResources" />
        <constant name="struts.multipart.saveDir" value="C:/Users/satbir/Desktop/apache-tomcat-7.0.40/work" />

    <package name="default" extends="struts-default" namespace="/">
        <action name="login" class="com.devmanuals.LoginAction">
        <interceptor-ref name="basicStack"></interceptor-ref>
       <interceptor-ref name="fileUpload">
       <param name="maximumSize">10240</param>
           <param name="allowedTypes">text/html</param>
       </interceptor-ref>
            <result name="success">Welcome.jsp</result>
            <result name="error">Login.jsp</result>
        </action>
    </package>
</struts>

LoginAction.java
package com.devmanuals;

import java.io.File;

import org.apache.commons.io.FileUtils;

import com.opensymphony.xwork2.ActionSupport;

public class LoginAction {
    private String username;
    private String password;
    private File myFile;
       private String myFileContentType;
       private String myFileFileName;
       private String destPath;

    public String execute() {
        String nm= getMyFileContentType();
        System.out.println("Src File name: " + nm);
        System.out.println("Dst File name: " + myFileFileName);
        try
        {

        if (this.username.equals("user")
                && this.password.equals("user007")) {
            destPath = "C:/Users/satbir/Desktop/apache-tomcat-7.0.40/work";


                 System.out.println("Src File name: " + this.myFile);
                 System.out.println("Dst File name: " + myFileFileName);
                 System.out.println("Dst File name: " + myFileContentType);


                 System.out.println(" name: " + username);

                 File destFile = new File(destPath, this.myFileFileName);
                FileUtils.copyFile(this.myFile, destFile);

            return "success";
        }
              else {
            //addActionError(getText("error.login"));
            return "error";
        }
        }
        catch (Exception e)
        {
            System.out.println(e);
        }
        return "success";
        }


    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
    public File getMyFile() {
          return myFile;
       }
       public void setMyFile(File myFile) {
          this.myFile = myFile;
       }
       public String getMyFileContentType() {
          return myFileContentType;
       }
       public void setMyFileContentType(String myFileContentType) {
          this.myFileContentType = myFileContentType;
       }
       public String getMyFileFileName() {
          return myFileFileName;
       }
       public void setMyFileFileName(String myFileFileName) {
          this.myFileFileName = myFileFileName;
       }
}

console :
Jun 01, 2013 10:38:59 PM org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jre7\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:/Program Files/Java/jre7/bin/client;C:/Program Files/Java/jre7/bin;C:/Program Files/Java/jre7/lib/i386;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Program Files\Java\jdk1.7.0_13\bin;C:\Program Files\Microsoft SQL Server\90\Tools\binn\;C:\Program Files\Nmap;E:\eclipse;;.
Jun 01, 2013 10:38:59 PM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:Struts2Login' did not find a matching property.
Jun 01, 2013 10:39:00 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-bio-8080"]
Jun 01, 2013 10:39:00 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["ajp-bio-8009"]
Jun 01, 2013 10:39:00 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 1106 ms
Jun 01, 2013 10:39:00 PM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Catalina
Jun 01, 2013 10:39:00 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.40
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Parsing configuration file [struts-default.xml]
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Unable to locate configuration files of the name struts-plugin.xml, skipping
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Parsing configuration file [struts-plugin.xml]
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Parsing configuration file [struts.xml]
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.ObjectFactory)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.FileManagerFactory)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.conversion.impl.XWorkConverter)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.conversion.impl.CollectionConverter)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.conversion.impl.ArrayConverter)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.conversion.impl.DateConverter)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.conversion.impl.NumberConverter)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.conversion.impl.StringConverter)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.conversion.ConversionPropertiesProcessor)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.conversion.ConversionFileProcessor)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.conversion.ConversionAnnotationProcessor)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.conversion.TypeConverterCreator)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.conversion.TypeConverterHolder)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.TextProvider)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.LocaleProvider)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.ActionProxyFactory)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.conversion.ObjectTypeDeterminer)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (org.apache.struts2.dispatcher.mapper.ActionMapper)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (jakarta) for (org.apache.struts2.dispatcher.multipart.MultiPartRequest)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (org.apache.struts2.views.freemarker.FreemarkerManager)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (org.apache.struts2.components.UrlRenderer)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.validator.ActionValidatorManager)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.util.ValueStackFactory)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.util.reflection.ReflectionProvider)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.util.reflection.ReflectionContextFactory)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.util.PatternMatcher)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (org.apache.struts2.dispatcher.StaticContentLoader)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.UnknownHandlerManager)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (org.apache.struts2.views.util.UrlHelper)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Choosing bean (struts) for (com.opensymphony.xwork2.util.TextParser)
Jun 01, 2013 10:39:02 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
INFO: Loading global messages from [ApplicationResources]
Jun 01, 2013 10:39:02 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-bio-8080"]
Jun 01, 2013 10:39:02 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["ajp-bio-8009"]
Jun 01, 2013 10:39:02 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 2422 ms

***********************************************************************
*                               WARNING!!!                            *
*                                                                     *
* >>> FilterDispatcher <<< is deprecated! Please use the new filters! *
*                                                                     *
*           This can be a source of unpredictable problems!           *
*                                                                     *
*              Please refer to the docs for more details!             *
*            http://struts.apache.org/2.x/docs/webxml.html            *
*                                                                     *
***********************************************************************

Jun 01, 2013 10:39:15 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger warn
WARNING: No configuration found for the specified action: 'login' in namespace: ''. Form action defaulting to 'action' attribute's literal value.
Jun 01, 2013 10:39:16 PM com.opensymphony.xwork2.util.logging.commons.CommonsLogger warn
WARNING: No configuration found for the specified action: 'login' in namespace: ''. Form action defaulting to 'action' attribute's literal value.

***********************************************************************
*                               WARNING!!!                            *
*                                                                     *
* >>> FilterDispatcher <<< is deprecated! Please use the new filters! *
*                                                                     *
*           This can be a source of unpredictable problems!           *
*                                                                     *
*              Please refer to the docs for more details!             *
*            http://struts.apache.org/2.x/docs/webxml.html            *
*                                                                     *
***********************************************************************

Src File name: null
Dst File name: null
Src File name: null
Dst File name: null
Dst File name: null
name: user
java.lang.NullPointerException

alok mazumdar

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Jul 11, 2013, 10:32:03 AM7/11/13

to java-bra...@googlegroups.com

hi i have similar problem use defualt interceptors at the begining , now it won't show exception but allowed types are not working ok