Problem : You are getting Caused By: java.lang.NoClassDefFoundError: org/apache/log4j/Logger fault inwards your Java application, which is using Log4j Logger either straight or indirectly via around pop Java framework similar Spring, Struts or Hibernate.
Cause : Caused By: java.lang.NoClassDefFoundError: org/apache/log4j/Logger fault indicates that JVM is non able to institute org.apache.log4j.Logger shape inwards your application's CLASSPATH. Simplest argue of this fault is missing log4j.jar file. Since org.apache.log4j.Logger class belongs to this JAR file, if its non available at run-time together with then your plan volition fail. Similar outcome is java.lang.NoClassDefFoundError org.apache.log4j.Appender, which likewise comes due to missing log4j.jar inwards CLASSPATH. You tin banking venture fit that org.apache.log4j.Appender likewise belongs to log4j.jar file. If yous don't know how together with then allow me nation yous a quick tip. If yous accept your projection setup together with then yous tin exactly type Ctrl + T together with advert of shape e.g. org.apache.log4j.Logger and Eclipse volition demo all the shape file amongst same name along amongst the JAR file on which they are packaged. I oft operate this play a joke on to notice out whether a item shape is acquaint inwards CLASSPATH or not.
Solution: If work is caused due to missing log4j.jar file together with then yous tin develop it yesteryear adding relevant version of log4j.jar into your CLASSPATH. Now, which version of JAR file yous should add together volition depend upon your application together with library yous are using but at safer side yous tin ever add together latest one. BTW, its worth remembering that in that place is huge departure betwixt Log4j together with Log4j2, which likewise provides asynchronous logging, hence brand certain yous add together correct version of log4j library into your application's classpath.
You tin download log4j.jar file either from Maven fundamental repository or straight from Apache Log4j website http://logging.apache.org/log4j/1.2/download.html. If yous are using log4j ii e.g. for asynchronous logging together with then yous tin download log4j2.jar from here. It exists inwards same website but at dissimilar location.
If yous are using Maven together with then yous tin likewise add together next dependency inwards your pom.xml file to download Log4j.jar
That's all virtually how to develop Caused By: java.lang.NoClassDefFoundError: org/apache/log4j/Logger fault inwards Java application. In most of the cases, this outcome volition become away every bit shortly every bit yous add together log4j.jar file but if it notwithstanding persist together with then yous need to carefully banking venture fit your CLASSPATH setting. You tin meet hither to larn to a greater extent than virtually how to bargain amongst CLASSPATH intricacies inwards Java.
Other Related errors together with exceptions from Java programs :
Cause : Caused By: java.lang.NoClassDefFoundError: org/apache/log4j/Logger fault indicates that JVM is non able to institute org.apache.log4j.Logger shape inwards your application's CLASSPATH. Simplest argue of this fault is missing log4j.jar file. Since org.apache.log4j.Logger class belongs to this JAR file, if its non available at run-time together with then your plan volition fail. Similar outcome is java.lang.NoClassDefFoundError org.apache.log4j.Appender, which likewise comes due to missing log4j.jar inwards CLASSPATH. You tin banking venture fit that org.apache.log4j.Appender likewise belongs to log4j.jar file. If yous don't know how together with then allow me nation yous a quick tip. If yous accept your projection setup together with then yous tin exactly type Ctrl + T together with advert of shape e.g. org.apache.log4j.Logger and Eclipse volition demo all the shape file amongst same name along amongst the JAR file on which they are packaged. I oft operate this play a joke on to notice out whether a item shape is acquaint inwards CLASSPATH or not.
Solution: If work is caused due to missing log4j.jar file together with then yous tin develop it yesteryear adding relevant version of log4j.jar into your CLASSPATH. Now, which version of JAR file yous should add together volition depend upon your application together with library yous are using but at safer side yous tin ever add together latest one. BTW, its worth remembering that in that place is huge departure betwixt Log4j together with Log4j2, which likewise provides asynchronous logging, hence brand certain yous add together correct version of log4j library into your application's classpath.
You tin download log4j.jar file either from Maven fundamental repository or straight from Apache Log4j website http://logging.apache.org/log4j/1.2/download.html. If yous are using log4j ii e.g. for asynchronous logging together with then yous tin download log4j2.jar from here. It exists inwards same website but at dissimilar location.
<dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.15</version> </dependency>If yous are using log4j version ii together with then yous tin add together next Maven dependency :
<dependency> <groupId>org.apache.logging.log4j</groupId> <artifactId>log4j-api</artifactId> <version>2.3</version> </dependency>
That's all virtually how to develop Caused By: java.lang.NoClassDefFoundError: org/apache/log4j/Logger fault inwards Java application. In most of the cases, this outcome volition become away every bit shortly every bit yous add together log4j.jar file but if it notwithstanding persist together with then yous need to carefully banking venture fit your CLASSPATH setting. You tin meet hither to larn to a greater extent than virtually how to bargain amongst CLASSPATH intricacies inwards Java.
Other Related errors together with exceptions from Java programs :
- How to develop java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory [solution]
- How to solve java.lang.NoClassDefFoundError: org/apache/xmlbeans/XmlObject [solution]
- Could non practice the Java virtual machine Invalid maximum heap size: -Xmx [solution]
- How to develop java.lang.unsupportedclassversionerror unsupported major.minor version 49.0 50.0 [fix]
- How to bargain amongst java.lang.ClassNotFoundException: com.mysql.jdbc.Driver inwards Java [solution]
- How to solve java.lang.classnotfoundexception oracle.jdbc.driver.oracledrive inwards JDBC [solution]
- How to develop java.lang.NoClassDefFoundError: org/dom4j/DocumentException inwards Apache POI [fix]
- How to solve java.lang.ClassNotFoundException: org.Springframework.Web.Context.ContextLoaderListener inwards Spring [solution]
- Solution of java.lang.ClassNotFoundException: com.microsoft.sqlserver.jdbc.SQLServerDriver Error inwards JDBC [solution]
- Solution of java.lang.ClassNotFoundException: org.postgresql.Driver fault inwards Java? [solution]
0 Response to "Caused By: java.lang.NoClassDefFoundError: org/apache/log4j/Logger inwards Java"
Posting Komentar