在Spring 4中导入Groovy Bean定义？

Question

<import resource="/WEB-INF/config.groovy"/>

但这是行不通的。怎么了？

我的bean定义如下所示：

import org.apache.commons.dbcp.BasicDataSource

beans {
   dataSource(BasicDataSource) {
      driverClassName = "com.mysql.jdbc.Driver"
      url = "jdbc:mysql://localhost:3306/test"
      username = "root"
      password = "root"
   }
}

Answer 1

通过定义自己的BeanPostprocessor解决了这个问题：

public class GroovyConfigImporter implements BeanDefinitionRegistryPostProcessor {
    private static final Logger log = LoggerFactory.getLogger(GroovyConfigImporter.class);

    private final String config;

    public GroovyConfigImporter(String config) {
        this.config = config;
    }

    @Override
    public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry registry) throws BeansException {
        log.info("Loading Groovy config '{}'", config);

        GroovyBeanDefinitionReader reader = new GroovyBeanDefinitionReader(registry);
        try {
            reader.importBeans(config);
        } catch (IOException e) {
            throw new ApplicationContextException("Can't open Groovy config '" + config + "'");
        }
    }

    @Override
    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
    }
}

然后在XML中定义：

<bean class="my.package.GroovyConfigImporter">
    <constructor-arg value="myConfig.groovy"/>
</bean>