Tomcat Error - java.util.concurrent.ExecutionException:org.apache.catalina.LifeException

 

This is an error-solving method that occurs when you run a Tomcat in Eclipse.

This usually occurs when you change the JAVA version or Tomcat version.

java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException

■ Cause

This occurs because the servlet.jar version is not compatible with the Tomcat version.

■ Solution

The following is the specification specified in Tomcat, and you can adjust the specification of that version.

http://tomcat.apache.org/whichversion.html

In my case, it happened when I changed from Tomcat7 to Tomcat8.

So, I solved it by changing the servlet version in myven.

Before	After
<dependency>     <groupId>javax.servlet</groupId>     <artifactId>servlet-api</artifactId>     <scope>provided</scope>     <version>2.5</version> </dependency>	<dependency>     <groupId>javax.servlet</groupId>     <artifactId>javax.servlet-api</artifactId>     <scope>provided</scope>     <version>3.1.0</version> </dependency>