Using Java EE with Spring Boot

Vaadin 6 / 7 / 8
1

Hello,

We have a Vaadin application that uses different features of Java EE (Interceptors, @Inject Instance<>, etc.) that we currently run in a TomEE application server. We’re trying to move this application to Spring Boot by doing as little change as possible.

As soon as I include the following dependency in the POM I get the following error when starting the Spring Boot app:

<dependency>
    <groupId>org.apache.openejb</groupId>
    <artifactId>tomee-embedded</artifactId>
    <version>1.7.4</version>
</dependency>
  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v1.4.2.RELEASE)

Nov 16, 2016 12:07:29 PM org.springframework.boot.SpringApplication reportFailure
SEVERE: Application startup failed
org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is java.lang.NoSuchMethodError: org.apache.tomcat.util.scan.StandardJarScanner.setJarScanFilter(Lorg/apache/tomcat/JarScanFilter;)V
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:137)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:536)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:761)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:371)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1186)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1175)
    at edu.self.vsb.VaadinSbApplication.main(VaadinSbApplication.java:18)
Caused by: java.lang.NoSuchMethodError: org.apache.tomcat.util.scan.StandardJarScanner.setJarScanFilter(Lorg/apache/tomcat/JarScanFilter;)V
    at org.springframework.boot.context.embedded.tomcat.SkipPatternJarScanner$Tomcat8TldSkipSetter.setSkipPattern(SkipPatternJarScanner.java:107)
    at org.springframework.boot.context.embedded.tomcat.SkipPatternJarScanner.setPatternToTomcat8SkipFilter(SkipPatternJarScanner.java:62)
    at org.springframework.boot.context.embedded.tomcat.SkipPatternJarScanner.<init>(SkipPatternJarScanner.java:57)
    at org.springframework.boot.context.embedded.tomcat.SkipPatternJarScanner.apply(SkipPatternJarScanner.java:88)
    at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.prepareContext(TomcatEmbeddedServletContainerFactory.java:207)
    at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:176)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer(EmbeddedWebApplicationContext.java:164)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:134)
    ... 8 more

Is there a way to use Java EE with Spring Boot, or must I convert all Java EE code into Spring code?

Thanks a lot

2

You got a “java.lang.NoSuchMethodError” error,
I think it may be caused by incorrect jar file version.

Some code is calling a method of some class, but your app is using a jar file of the wrong version,
so it can find the class, but the method signature is different.

From your excetption stack info, I guess:
(1)the code who is calling is
org.springframework.boot.context.embedded.tomcat.SkipPatternJarScanner$Tomcat8TldSkipSetter.setSkipPattern(SkipPatternJarScanner.java:107)

(2)the class and method called by (1) is:
org.apache.tomcat.util.scan.StandardJarScanner.setJarScanFilter(Lorg/apache/tomcat/JarScanFilter;)V
and the signature should be setJarScanFilter(org.apache.tomcat.JarScanFilter filter)

So, please check the source code of (1), and check the jar version and source code of (2),
see if they are compatible

3

Same error happened here:
http://stackoverflow.com/questions/33157970/spring-boot-exception-java-lang-nosuchmethoderror-standardjarscanner-setjarsca

You can read the answer, see if it can help you

4

Ok, thanks for you help. I managed to find and exclude the dependency that was causing the problem, but then another one caused the same problem, and then another one, etc. Maybe I should use another implementation of Java EE but I guess there will always be some kind of conflict…

5

What tool are you using to manage the jar depedency?
Maven? Ivy? or Gradle?

6

I’m using Maven.