在 pom.xml 中为 Spring Boot 项目指定 main 和 test 资源目录的正确方法

Question

I have 2 application.properties file in my small Spring Boot project. One is saved in /src/main/resources/application.properties and the other is in /src/test/resources/application.properties .

Some values in main doesn't necessarily have to be present in test .

Problem : When I do maven clean -> update project -> maven install in Spring Tool Suite IDE, I get multiple

Could not resolve placeholder 'JMS_URL' in value "${JMS_URL}"... and so on

But if I delete the application.properties file in test /src/test/resources/application.properties the error goes away and I get a successful maven install build.

I searched online and found that you need to specify the resources directory in pom.xml if you get that error.

Like so :

<resources>
    <resource>
        <directory>src/main/resources</directory>
        <filtering>true</filtering>
        <includes>
            <include>**/*.properties</include>
        </includes>
    </resource>
</resources>

In my case, adding that <resource> block still did not resolve my problem because it's only specifying the directory of application.properties in src/main/resources but not for test

What is the correct way of handling this kind of situation where you have 2 application.properties file in main and test resource folder?

I'd appreciate any comment.

Thank you.

Answer 1

The correct way of handling this kind of situation is naming the test properties file differently, like application-test.properties . Then you either run your tests with the test profile active or explicitly specify

@TestPropertySource("classpath:application-test.properties")

on your @SpringBootTest . Both ways you'll have all your properties from the main application.properties and application-test.properties active with properties from the latter having a higher priority.

Leaving the test properties file with the default name ( application.properties ) completely overrides the main properties file as you might have noticed. This way the test properties file has to have all the same required properties as the main one for the tests to work.