Spring boot，通过集成测试用例读取 yml 属性

Question

您好，我正在使用 Spring Boot，我想在 Bean 中注入 .yml 文件的值。我已经编写了集成测试用例，但看起来通过集成测试用例它没有注入值。

问题是 url 的值和 keyspaceApp 为空

豆子

    @ConfigurationProperties(prefix="cassandra")
public class TestBean {

    @Value("${urls}")
    private String urls;

    @Value("${keyspaceApp}")
    private String app;

    public void print() {
        System.out.println(urls);
        System.out.println(app);
    }

    public String getUrls() {
        return urls;
    }

    public void setUrls(String urls) {
        this.urls = urls;
    }
}

集成测试用例

@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = TestBean.class)
@IntegrationTest
public class CassandraClientTest {

    @Autowired
    private TestBean bean;

    @Test
    public void test() {
        bean.print();
    }
}

应用yml文件

cassandra:
  urls: lllaaa.com
  keyspaceApp: customer
  createDevKeyspace: true

Answer 1

这是我如何让它工作的：

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(initializers=ConfigFileApplicationContextInitializer.class)
public class MyTestClass {

  @Autowired
  private ConfigurableApplicationContext c;

  @Test
  public void myTestMethod() {            
     String value = c.getEnvironment().getProperty("myapp.property")
     ...
  }
}

Answer 2

试试这个：

@SpringApplicationConfiguration(classes = TestBean.class, initializers = ConfigFileApplicationContextInitializer.class)

来自其 JavaDocs：

* {@link ApplicationContextInitializer} that can be used with the
* {@link ContextConfiguration#initializers()} to trigger loading of
* {@literal application.properties}.

它说它适用于application.properties，但我想它也应该适用于application.yml。

Answer 3

如果资源文件夹中有“application-test.yml”。

你可以试试这个：

import org.springframework.test.context.ActiveProfiles;
@ActiveProfiles("test")

来自它的 Java 文档：

 * {@code ActiveProfiles} is a class-level annotation that is used to declare
 * which <em>active bean definition profiles</em> should be used when loading
 * an {@link org.springframework.context.ApplicationContext ApplicationContext}
 * for test classes.
 *
 * <p>As of Spring Framework 4.0, this annotation may be used as a
 * <em>meta-annotation</em> to create custom <em>composed annotations</em>.

Answer 4

SpringApplicationConfiguration 在 spring [Spring Boot v1.4.x] 中被弃用，并在 [Spring Boot v1.5.x] 中被删除。所以，这是一个更新的答案。

MyTestClass 类是这样的：

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.ConfigFileApplicationContextInitializer;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringRunner;
import static org.assertj.core.api.Assertions.assertThat;

@RunWith(SpringRunner.class)
@ContextConfiguration(classes = MyConfiguration.class, initializers = ConfigFileApplicationContextInitializer.class)
public class MyTestClass {
    @Autowired
    private MyYmlProperties myYmlProperties;

    @Test
    public void testSpringYmlProperties() {
        assertThat(myYmlProperties.getProperty()).isNotEmpty();
    }
}

MyYmlProperties 类是这样的：

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;

@Configuration
@ConfigurationProperties(prefix = "my")
public class MyYmlProperties {
    private String property;
    public String getProperty() { return property; }
    public void setProperty(String property) { this.property = property; }
}

我的application.yml 是这样的：

my:
  property: Hello

最后MyConfiguration 真的是空的:-) 你可以用你想要的来填充它：

import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Configuration;

@Configuration
@EnableConfigurationProperties(value = MyYmlProperties.class)
public class MyConfiguration {
}

Answer 5

这是另一种方式：[Spring Boot v1.4.x]

import org.springframework.boot.test.context.SpringBootTestContextBootstrapper;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@RunWith(SpringJUnit4ClassRunner.class)
@BootstrapWith(SpringBootTestContextBootstrapper.class)
public class CassandraClientTest {

  @Autowired
  private TestBean bean;

  @Test
  public void test() {
    bean.print();
  }
}

仅当“application.properties”文件也存在时才有效。

例如maven 项目：

src/main/resources/application.properties [ 文件可以为空，但必须填写！ ]
src/main/resources/application.yml [这是你真正的配置文件]