如果使用@PropertySource，则必须使用以下方法检索属性：
@AutowiredEnvironment env;// ...String subject = env.getProperty('mail.subject');
如果要使用@Value（“ $ {mail.subject}”）进行检索，则必须通过xml注册prop占位符。
如@cwash所说;
@Configuration@PropertySource('classpath:/test-config.properties')public class TestConfig { @Value('${name}') public String name; //You need this @Bean public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {return new PropertySourcesPlaceholderConfigurer(); }}解决方法
我有以下配置类：
@Configuration@PropertySource(name = "props",value = "classpath:/app-config.properties")@ComponentScan("service")public class AppConfig {
and I have service with property:
@Component public class SomeService { @Value("#{props[’some.property’]}") private String someProperty;
我想使用以下命令测试AppConfig配置类时收到错误消息
org.springframework.beans.factory.BeanCreationException: Error creating bean with name ’someService’: Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private java.lang.String service.SomeService.someProperty; nested exception is org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.expression.spel.SpelEvaluationException: EL1008E:(pos 0): Field or property ’props’ cannot be found on object of type ’org.springframework.beans.factory.config.BeanExpressionContext’
该问题记录在SPR-8539中
但无论如何，我无法弄清楚如何配置PropertySourcesPlaceholderConfigurer 使其正常工作。
编辑1这种方法适用于xml配置
<util:properties id="props" location="classpath:/app-config.properties" />
但我想使用Java进行配置。
