我有一个类,我想从属性文件中设置它的参数之一:
import org.springframework.beans.factory.annotation.Value;
(..)
@Getter
@Setter
@NoArgsConstructor
public class ConvertNonStandardOfferRequestDtoWrapper {
private ConvertNonStandardOfferRequestDto convertNonStandardOfferRequestDto;
@Value("true")
private boolean documentPrintoutsRequired;
public ConvertNonStandardOfferRequestDtoWrapper(ConvertNonStandardOfferRequestDto convertNonStandardOfferRequestDto) {
this.convertNonStandardOfferRequestDto = convertNonStandardOfferRequestDto;
}
}
我在构造函数中看到的是 documentPrintoutsRequired
是 false
而不是 true
。我在构造函数内调试和设置断点时看到了这一点。我有这个模块的 pom 文件:
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>x</groupId>
<artifactId>policy</artifactId>
<version>4.0-SNAPSHOT</version>
</parent>
<artifactId>policy-api</artifactId>
<dependencies>
<dependency>
<groupId>x</groupId>
<artifactId>common-api</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>${guava.version}</version>
</dependency>
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
</dependency>
</dependencies>
<build>
(...)
</build>
</project>
我想知道为什么 @value
不能正常工作?
最佳答案
我建议您对所有属性使用构造函数注入(inject),这样您将在构造期间看到注入(inject)的@Value。
此外类必须是 Spring bean,因此添加 @Component 注解:
@Component
@Getter
@Setter
@NoArgsConstructor
public class ConvertNonStandardOfferRequestDtoWrapper {
private ConvertNonStandardOfferRequestDto convertNonStandardOfferRequestDto;
private boolean documentPrintoutsRequired;
public ConvertNonStandardOfferRequestDtoWrapper(ConvertNonStandardOfferRequestDto convertNonStandardOfferRequestDto,
@Value("${yourproperty}") boolean documentPrintoutsRequired) {
this.convertNonStandardOfferRequestDto = convertNonStandardOfferRequestDto;
this.documentPrintoutsRequired = documentPrintoutsRequired;
}
}
关于java - Spring @value 未设置属性,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/53833758/