Question

我有使用2个数据库的spring boot应用程序。我定义了2个提供指定数据源的配置。我想让liquibase单独管理这些数据源。我定义了2个单独的更改日志文件。

问题是我无法为liquibase定义2个单独的bean。

以下是我的配置类：

...
public class CCSConfiguration {
    ...

    @Bean
    @ConfigurationProperties("ccs.liquibase")
    public LiquibaseProperties ccsLiquibaseProperties() {
        return new LiquibaseProperties();
    }

    @Bean
    public SpringLiquibase ccsLiquibase(LiquibaseProperties liquibaseProperties) {
        ...
    }
    ...
}



...
public class CCAConfiguration {
    ...
    @ConfigurationProperties("cca.liquibase")
    public LiquibaseProperties ccaLiquibaseProperties() {
        return new LiquibaseProperties();
    }

    @Bean
    public SpringLiquibase ccaLiquibase(LiquibaseProperties liquibaseProperties) {
        ...
    }
    ...
}

和属性：

cca:
    liquibase:
        change-log: classpath:config/liquibase/cca/master.xml
ccs:
    liquibase:
        change-log: classpath:config/liquibase/ccs/master.xml

使用此配置，我在运行应用程序时遇到以下错误：

2017-04-11 14:26:55.664  WARN 34292 --- [  restartedMain] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'liquibase' available
2017-04-11 14:26:55.711  WARN 34292 --- [  restartedMain] o.s.boot.SpringApplication               : Error handling failed (Error creating bean with name 'delegatingApplicationListener' defined in class path resource [org/springframework/security/config/annotation/web/configuration/WebSecurityConfiguration.class]: BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.cache.config.internalCacheAdvisor' defined in class path resource [org/springframework/cache/annotation/ProxyCachingConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cache.interceptor.BeanFactoryCacheOperationSourceAdvisor]: Factory method 'cacheAdvisor' threw exception; nested exception is java.lang.NullPointerException)
2017-04-11 14:26:55.939 ERROR 34292 --- [  restartedMain] o.s.b.d.LoggingFailureAnalysisReporter   : 

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

Description:

A component required a bean named 'liquibase' that could not be found.


Action:

Consider defining a bean named 'liquibase' in your configuration.

那么，是否可以为不同的数据源定义多个liquibase bean？

Answer 1

有两种选择：

您定义了一个名为liquibase的bean，让spring-boot集成进程在您的第一个DS上更新您的架构。你必须手动处理第二个
您在启动时使用

已启用：false

并定义DS和liquibase bean更新两个数据库的方式

弹簧靴中的多个liquibase配置

1 个答案: