Correct the classpath of your application so that it contains compatible versions of the classes TomcatWebServerFactoryCustomizer

Question

I have included tomcat in my pom

<dependencies>
    ...
    <dependency>
        <groupId>org.apache.tomcat.embed</groupId>
        <artifactId>tomcat-embed-core</artifactId>
        <version>8.5.32</version>
    </dependency>
</dependencies>

and when I run the spring boot application, I get the following message:

*************************** APPLICATION FAILED TO START

---

Description:

An attempt was made to call a method that does not exist. The attempt was made from the following location:

org.springframework.boot.autoconfigure.web.embedded.TomcatWebServerFactoryCustomizer.customizeMaxHttpRequestHeaderSize(TomcatWebServerFactoryCustomizer.java:264)

The following method did not exist:

'void org.apache.coyote.http11.AbstractHttp11Protocol.setMaxHttpRequestHeaderSize(int)'

The calling method's class, org.springframework.boot.autoconfigure.web.embedded.TomcatWebServerFactoryCustomizer, was loaded from the following location:

jar:file:/home/kamil/.m2/repository/org/springframework/boot/spring-boot-autoconfigure/3.1.0/spring-boot-autoconfigure-3.1.0.jar!/org/springframework/boot/autoconfigure/web/embedded/TomcatWebServerFactoryCustomizer.class

The called method's class, org.apache.coyote.http11.AbstractHttp11Protocol, is available from the following locations:

jar:file:/home/kamil/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/8.5.32/tomcat-embed-core-8.5.32.jar!/org/apache/coyote/http11/AbstractHttp11Protocol.class

The called method's class hierarchy was loaded from the following locations:

org.apache.coyote.http11.AbstractHttp11Protocol: file:/home/user/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/8.5.32/tomcat-embed-core-8.5.32.jar
org.apache.coyote.AbstractProtocol: file:/home/user/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/8.5.32/tomcat-embed-core-8.5.32.jar

Action:

Correct the classpath of your application so that it contains compatible versions of the classes org.springframework.boot.autoconfigure.web.embedded.TomcatWebServerFactoryCustomizer and org.apache.coyote.http11.AbstractHttp11Protocol

and when I remove it, the compiler doesn't see javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, and javax.servlet.http.FilterChain.

Answer 1

Remove the tomcat dependency. Spring Boot BOM is going to provide it for you. Change javax to jakarta as they were replaced in Spring Security 6.