This topic describes issues you may run into while setting up Enterprise Spring Boot Governance Starter in your application dependencies, along with solutions or workarounds.

Problems running your app as a fat jar

After adding Enterprise Spring Boot Governance Starter as a dependency to your application, you may run into the following error when running the fat jar produced by the Spring Boot plug-in:

11:42:15.126 [main] ERROR org.springframework.boot.SpringApplication -- Application run failed
org.bouncycastle.crypto.fips.FipsOperationError: Module checksum failed: unable to find
	at org.bouncycastle.crypto.fips.FipsStatus.checksumValidate(Unknown Source)
	at org.bouncycastle.crypto.fips.FipsStatus.isReady(Unknown Source)
    ...

Cause

The current version of Bouncy Castle is not compatible with the nested jar support in Spring Boot 3.2. For more details, see bc-fips and SpringBoot 3.2 compatibility issue.

Solution

Until the new Bouncy Castle fix is approved again, the workaround is to use the Spring Boot loader fallback option to your application:

• For Gradle:

  bootJar {
      loaderImplementation = org.springframework.boot.loader.tools.LoaderImplementation.CLASSIC
  }
  

• For Maven:

  <build>
  <plugins>
      <plugin>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-maven-plugin</artifactId>
          <executions>
          <execution>
              <goals>
                  <goal>repackage</goal>
              </goals>
              <configuration>
                  <loaderImplementation>CLASSIC</loaderImplementation>
              </configuration>
          </execution>
          </executions>
      </plugin>
  </plugins>
  </build>