我有一个Spring @Configuration
注释类MappingsClientConfig
,其 bool(boolean) 字段为:
@Value("${mappings.enabled:true}")
private boolean mappingsEnabled;
此类被导入到另一个带有Spring注释的类中,如下所示:@Configuration
@Import(MappingsClientConfig.class)
public class LookupManagerConfig {
在测试用例中通过Spring上下文实例化类时,容器无法将字符串解析为 bool(boolean) 字段mappingsEnabled
,我得到:Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private boolean com.barcap.tcw.mappings.economic.client.config.EconomicMappingsClientConfig.economicMappingsEnabled; nested exception is org.springframework.beans.TypeMismatchException: Failed to convert value of type 'java.lang.String' to required type 'boolean'; nested exception is java.lang.IllegalArgumentException: Invalid boolean value [${mappings.enabled:true}]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:502)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:84)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:282)
... 138 more
Caused by: org.springframework.beans.TypeMismatchException: Failed to convert value of type 'java.lang.String' to required type 'boolean'; nested exception is java.lang.IllegalArgumentException: Invalid boolean value [${mappings.enabled:true}]
at org.springframework.beans.SimpleTypeConverter.convertIfNecessary(SimpleTypeConverter.java:61)
at org.springframework.beans.SimpleTypeConverter.convertIfNecessary(SimpleTypeConverter.java:43)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:718)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:703)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:474)
... 140 more
Caused by: java.lang.IllegalArgumentException: Invalid boolean value [${mappings.enabled:true}]
at org.springframework.beans.propertyeditors.CustomBooleanEditor.setAsText(CustomBooleanEditor.java:124)
at org.springframework.beans.TypeConverterDelegate.doConvertTextValue(TypeConverterDelegate.java:416)
at org.springframework.beans.TypeConverterDelegate.doConvertValue(TypeConverterDelegate.java:388)
at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:157)
at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:93)
at org.springframework.beans.SimpleTypeConverter.convertIfNecessary(SimpleTypeConverter.java:49)
... 144 more
关于我缺少什么的线索? 最佳答案
好像您缺少PropertyPlaceholderConfigurer。您需要将其注册为Bean工厂后处理器。从理论上讲,可以这样做:
public class PostProcessorConfig {
@Bean
public BeanFactoryPostProcessor getPP() {
PropertyPlaceholderConfigurer configurer = new PropertyPlaceholderConfigurer();
configurer.setLocations(new Resource[]{new ClassPathResource("/my.properties")});
return configurer;
}
}
但是,似乎有一个bug会导致其他问题,这是基于Java的配置造成的。解决方法请参阅票证。