CODEWITHSUNDEEP
javaspringspring-boot
tryingHard
tryingHard

Reputation: 2104

Spring @value does not set property

I have class that one of it's parameters i want to set from properties file:

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;
    }
}

What i see inside constructor is that documentPrintoutsRequired is false instead of true. I see that when debuging and setting breakpoint inside constructor. And i have a pom file for this module:

    <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>

I am wonderning why @value does not work correctly ?

Upvotes: 1

Views: 4795

Answers (3)

KimB
KimB

Reputation: 63

Did you try this:

@Value("${yourPropInPropertiesFile}")
private boolean documentPrintoutsRequired;

Upvotes: 0

codependent
codependent

Reputation: 24482

I'd advise you use constructor inyection for all attributes, this way you'll see the injected @Value during construction time.

Besides the class must be a Spring bean, so add @Component annotation:

@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;
    }
}

Upvotes: 5

mingle08
mingle08

Reputation: 150

You can read the value from properties file, such as username = Tom.

use @Value in Java, you can set a default value like this:

@Value("${username:Jack}")

If the username does not exist in properties file, it will be "Jack".

Upvotes: 1

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