java - 在 Spring Boot 中使用 @PropertySource 读取属性文件时出错

Question

我是 Spring-Boot 应用程序的新手，尝试读取 Spring Boot 应用程序中的外部属性文件，该文件位于 application.properties 之外的资源文件夹中，但出现以下异常，

Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [com.test.config.MyInetgrationApplicationConfig]; nested exception is java.io.FileNotFoundException: Could not open ServletContext resource [/myIntegration.properties]
2017-09-06 17:27:04.866 ERROR 10512 --- [ost-startStop-1] o.s.b.f.s.DefaultListableBeanFactory     : Destroy method on bean with name 'org.springframework.boot.autoconfigure.internalCachingMetadataReaderFactory' threw an exception

java.lang.IllegalStateException: ApplicationEventMulticaster not initialized - call 'refresh' before multicasting events via the context: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@225fa519: startup date [Wed Sep 06 17:27:04 IST 2017]; root of context hierarchy
    at org.springframework.context.support.AbstractApplicationContext.getApplicationEventMulticaster(AbstractApplicationContext.java:414) [spring-context-4.3.10.RELEASE.jar:4.3.10.RELEASE]
    at org.springframework.context.support.ApplicationListenerDetector.postProcessBeforeDestruction(ApplicationListenerDetector.java:97) ~[spring-context-4.3.10.RELEASE.jar:4.3.10.RELEASE]
    at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:253) ~[spring-beans-4.3.10.RELEASE.jar:4.3.10.RELEASE]

我的Config类如下，

@Configuration
@PropertySource(name="myIntegrationProperties", value ="myIntegration.properties")
public class MyInetgrationApplicationConfig {

    /**
     * Rest template.
     *
     * @return the rest template
     */
    @Bean
    public RestTemplate restTemplate() {
        return new RestTemplate();
    }

    @Value("${datasource.name}")
    private String dataSourceName;

    @Value("${datasource.driver}")
    private String dataSourceDriver;

    @Value("${datasource.url}")
    private String dataSourceUrl;

    @Value("${datasource.username}")
    private String dataSourceUserName;

    @Value("${datasource.password}")
    private String dataSourcePassword;

    @Bean
    @Primary
    public DataSource dataSource() {
        DataSource dataSource = new DataSource();
        dataSource.setName(dataSourceName);
        dataSource.setUrl(dataSourceUrl);
        dataSource.setDriverClassName(dataSourceDriver);
        dataSource.setUsername(dataSourceUserName);
        dataSource.setPassword(dataSourcePassword);

        return dataSource;
    }
}

我的应用程序类，

@SpringBootApplication(scanBasePackages = { "com.test" })
public class MyInetgrationApplication extends SpringBootServletInitializer {
    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(MyInetgrationApplication.class);
    }

}

Answer 1

您需要添加claapath:

@PropertySource("classpath:myIntegration.properties")

myIntegration.properties 文件应放置在/src/main/resources 下，以便在运行时在classpath 上可用。