要组合/构建我们的（liquibase）变更日志，我们可以：
1.使用（liquibase）include "attribute" (et al.)。（我还是更喜欢这个！）

• （使用spring）定义 * 多个 * @Bean SpringLiquibase：
• 简单如图here（调整后的副本见下图）。
• 或者（也可以停用，但是）使用spring-boot auto configuration...

Spring Boot（2.7.5）解决方案：

(main项目）application.properties：

spring.liquibase.change-log=classpath:/main.xml
# many more with same prefix ...
lib.liquibase.change-log=classpath:/library.xml
# according for lib.liquibase.* ...

主/配置类：

@SpringBootApplication(/* scanBasePackages = "com.example.lib" */)
// We need/want these:
@EnableConfigurationProperties(LiquibaseProperties.class)
public class Demo {

  @Bean // "main" liquibase: 
  // when order matters: @DependsOn("liquibaseLib") 
  @ConfigurationProperties("spring.liquibase") // !
  public SpringLiquibase liquibase( 
      ObjectProvider<DataSource> dataSource,
      @LiquibaseDataSource ObjectProvider<DataSource> liquibaseDataSource,
      LiquibaseProperties properties) {
    return liqui(dataSource, liquibaseDataSource, properties);
  }

  @Bean // lib liquibase:
  @ConfigurationProperties("lib.liquibase")
  public SpringLiquibase liquibaseLib(
      ObjectProvider<DataSource> dataSource,
      /* alternatively: @MyVeryCustomDataSource ... */
      @LiquibaseDataSource ObjectProvider<DataSource> liquibaseDataSource,
      LiquibaseProperties properties) {
    return liqui(dataSource, liquibaseDataSource, properties);
  }

  // pstvm...

  private SpringLiquibase liqui(ObjectProvider<DataSource> dataSource,
      ObjectProvider<DataSource> liquibaseDataSource, LiquibaseProperties properties) {
    // trick: Don't use LiquibaseConfiguration as `@Configuration/Bean`
    // , it is not "repeatable" (in regards of liquibase execution;(
    // , but rather as a "utility object"/factory:
    LiquibaseConfiguration helpr = new LiquibaseConfiguration(properties);
    return helpr.liquibase(dataSource, liquibaseDataSource);
  }
}

www.example.com的标题（包+导入）Demo.java:
package com.example.app;import javax.sql.DataSource; import liquibase.integration.spring.SpringLiquibase; import org.springframework.beans.factory.ObjectProvider; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.autoconfigure.liquibase.LiquibaseAutoConfiguration.LiquibaseConfiguration; import org.springframework.boot.autoconfigure.liquibase.LiquibaseDataSource; import org.springframework.boot.autoconfigure.liquibase.LiquibaseProperties; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.boot.context.properties.EnableConfigurationProperties; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.DependsOn;
See Also.

简单解决方案

...如2所示：

import liquibase.integration.spring.SpringLiquibase;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.DependsOn;
import javax.sql.DataSource;

@Configuration // scanned/imported/used by "main" !
public class MultipleLiquiaseConfiguration {

    @Bean
    public SpringLiquibase liquibaseLib(DataSource dataSource) { // !
        SpringLiquibase liquibase = new SpringLiquibase();
        liquibase.setDataSource(dataSource);
        liquibase.setChangeLog("classpath:library.xml"); // !
        return liquibase;
    }

    @Bean
    // when order matters: @DependsOn("liquibaseLib")
    public SpringLiquibase liquibaseMain(DataSource dataSource) { // !
        SpringLiquibase liquibase = new SpringLiquibase();
        liquibase.setDataSource(dataSource);
        liquibase.setChangeLog("classpath:main.xml"); // !
        return liquibase;
    }
}

关于：
该库只有一个属性...
我 * 希望 * 这是一个 * 测试 * 属性;）！