I have a java web project which includes lo4j2. It is deploy on tomcat instance locally on my PC. I was debugging the java project. When debugger is on the instruction of Certificate class contructor and I see when the instruction 'CryptoProviderTools.installBCProvider();' is executed, it throws the following exception:
Servlet.service() for servlet [appServlet] in context with path [/myWebApp] threw exception [Request processing failed; nested exception is java.lang.NoClassDefFoundError: org/apache/log4j/Logger] with root cause
java.lang.ClassNotFoundException: org.apache.log4j.Logger
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1275)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1109)
at org.cesecore.util.CryptoProviderTools.<clinit>(CryptoProviderTools.java:39)
at common.Certificate.<init>(Ejbca.java:79)
The message shows 'org/apache/log4j/Logger' as if Java project is using log4j version 1 but it's actually using the log4j version 2. I don't know what does log4j1 have to do.
I got other java web project where CryptoProviderTools.installBCProvider() is working with lo4j2.
I'm showing you pom.file, log4j2.properties and Certificate.java files.
pom.xml file
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.17.1</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.17.1</version>
</dependency>
<dependency>
<groupId>cert-cvc-6</groupId>
<artifactId>cert-cvc-6</artifactId>
<version>6.0</version>
</dependency>
<dependency>
<groupId>ejbca-util-6</groupId>
<artifactId>ejbca-util-6</artifactId>
<version>6.0</version>
</dependency>
<dependency>
<groupId>ejbca-ws-cli-6</groupId>
<artifactId>ejbca-ws-cli-6</artifactId>
<version>6.0</version>
</dependency>
<dependency>
<groupId>ejbca-ws-6</groupId>
<artifactId>ejbca-ws-6</artifactId>
<version>6.0</version>
</dependency>
<dependency>
<groupId>cesecore-common-6</groupId>
<artifactId>cesecore-common-6</artifactId>
<version>6.0</version>
</dependency>
log4j2.properties file:
appenders=console, rolling
rootLogger.level = debug
rootLogger.appenderRefs=console,rolling
rootLogger.appenderRef.console.ref=ConsoleAppender
rootLogger.appenderRef.rolling.ref=DailyLog
appender.console.type = Console
appender.console.name = ConsoleAppender
appender.console.layout.type = PatternLayout
appender.console.layout.pattern = [%-5p] %d{dd-MM-yyyy HH:mm:ss} %l - %m%n
appender.rolling.type = RollingFile
appender.rolling.name = DailyLog
appender.rolling.fileName = ${catalina.base}/logs/myWebApp
appender.rolling.filePattern = ${catalina.base}/logs/myWebApp.%d{yyyy-MM-dd}
appender.rolling.layout.type = PatternLayout
appender.rolling.layout.pattern = [%-5p] %d{dd-MM-yyyy HH:mm:ss} %l - %m%n
appender.rolling.policies.type = Policies
appender.rolling.policies.time.type = TimeBasedTriggeringPolicy
Java class file:
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.cesecore.util.CryptoProviderTools;
public class Certificate {
private static final Logger LOG = LogManager.getLogger(Certificate.class);
protected Certificate() {
try{
CryptoProviderTools.installBCProvider(); // <-- the exception is threw here
...
...
}catch(Exception ex){
ex.printStackTrace();
}
}
}
What can I do so that CryptoProviderTools.installBCProvider() starts to work with log4j2?