Error 500 Java.lang.noclassdeffounderror Org.apache.log4j.logger
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Caused By: java.lang.NoClassDefFoundError: org/apache/log4j/Logger up vote 21 down vote favorite 2 I've got an interesting problem in which the org.apache.log4j.Logger class is not found during runtime. I'm trying to get authorized and that is where it's failing: OAuthAuthorizer oauthAuthorizer = new OAuthAuthorizer(OAUTH_CONSUMER_KEY, OAUTH_CONSUMER_SECRET, SAML_PROVIDER_ID, userId); I'm using JDeveloper 11.1.1.6. Here is what I know: I've looked in my UI.war/WEB-INF/lib directory and I see the log4j-1.2.17.jar there. The class complaining about it is org.opensaml.xml.XMLConfigurator Caused by: java.lang.NoClassDefFoundError: org/apache/log4j/Logger at org.opensaml.xml.XMLConfigurator.
Java Problem : You are getting Caused By: java.lang.NoClassDefFoundError: org/apache/log4j/Logger error in your Java application, which is using Log4j Logger either directly or indirectly via some popular Java framework like Spring, Struts or Hibernate. Cause : Caused By: java.lang.NoClassDefFoundError: org/apache/log4j/Logger error indicates that JVM is not able to found org.apache.log4j.Logger class in your application's CLASSPATH. Simplest reason of this error is missing log4j.jar file. Since org.apache.log4j.Logger class belongs to this JAR file, if its not available at run-time http://stackoverflow.com/questions/20909446/caused-by-java-lang-noclassdeffounderror-org-apache-log4j-logger then your program will fail. Similar issue is java.lang.NoClassDefFoundError org.apache.log4j.Appender, which also comes due to missing log4j.jar in CLASSPATH. You can check that org.apache.log4j.Appender also belongs to log4j.jar file. If you don't know how then let me tell you a quick tip. If you have your project setup then you can simply type http://www.java67.com/2015/08/caused-by-javalangnoclassdeffounderror-org-apache-log4j-Logger.html Ctrl+ T and name of class e.g.org.apache.log4j.Loggerand Eclipse will show all the class file with samename along with the JAR file on which they are packaged. I often use this trick to find out whether a particular class is present in CLASSPATH or not. Solution: If problem is caused due to missing log4j.jar file then you can fix it by adding relevant version of log4j.jar into your CLASSPATH. Now, which version of JAR file you should add will depend upon your application and library you are using but at safer side you can always add latest one. BTW, its worth remembering that there is huge difference between Log4j and Log4j2, which also provides asynchronous logging, so make sure you add right version of log4j library into your application's classpath. You can download log4j.jar file either from Maven central repository or directly from Apache Log4j website http://logging.apache.org/log4j/1.2/download.html. If you are using log4j 2 e.g. for asynchronous logging then you can
This Site Careers Other all forums Forum: Web https://coderanch.com/t/637159/Web-Services/java/java-lang-NoClassDefFoundError-org-apache Services java.lang.NoClassDefFoundError: org/apache/log4j/Logger error while deploying ear Saeed Amer Ranch Hand Posts: 140 posted 2 years ago update - http://forum.spring.io/forum/spring-projects/web/10606-noclassdeffounderror-org-apache-log4j-logmanager I solved the issue by deploying the missing jar files in the domain's lib folder -===== Hello there I have error 500 not done any java/web development in many years but now at work I have been asked to take over for a colleague who left the company. I have installed WLS 9.2 on my PC and have created required Domain error 500 java.lang.noclassdeffounderror and configured the JDBC Data Source, etc. Now I am trying to build and deploy WebServices application (which I copied as-is from my x-colleagues's PC) to this WLS 9.2. While deploying, I am getting following error:
and to http://spring.io/questions for a curated list of stackoverflow tags that Pivotal engineers, and the community, monitor. Announcement Announcement Module Collapse No announcement yet. NoClassDefFoundError: org/apache/log4j/LogManager Page Title Module Move Remove Collapse X Conversation Detail Module Collapse Posts Latest Activity Search Forums Page of 1 Filter Time All Time Today Last Week Last Month Show All Discussions only Photos only Videos only Links only Polls only Filtered by: Clear All new posts yzha Junior Member Join Date: Jun 2005 Posts: 5 #1 NoClassDefFoundError: org/apache/log4j/LogManager Nov 14th, 2005, 01:48 PM Hi, I have a J2EE web Application using Spring 1.1.2. It works fine under Websphere 5.1.2. Now I am trying to upgrade it to Websphere 6. After I deployed the EAR file, in start up, I got the following error. [11/14/05 11:41:41:205 PST] 0000002e ServletWrappe E SRVE0100E: Did not realize init() exception thrown by servlet Log4JLoader: java.lang.NoClassDefFoundError: org/apache/log4j/LogManager at org.apache.log4j.xml.XMLWatchdog.doOnChange(DOMCon figurator.java:815) at org.apache.log4j.helpers.FileWatchdog.checkAndConf igure(FileWatchdog.java:80) at org.apache.log4j.helpers.FileWatchdog.