以编程方式更改 Spring Boot 属性

Cob*_*117 2 java spring spring-cloud

我正在尝试为使用@RefreshScope. 我想添加一个实际更改属性并断言应用程序正确响应的测试。我已经想出了如何触发刷新(自动装配RefreshScope和调用refresh(...)),但我还没有想出修改属性的方法。如果可能,我想直接写入属性源(而不是必须处理文件),但我不确定在哪里查看。

更新

这是我正在寻找的示例:

public class SomeClassWithAProperty {
    @Value{"my.property"}
    private String myProperty;

    public String getMyProperty() { ... }
}

public class SomeOtherBean {
    public SomeOtherBean(SomeClassWithAProperty classWithProp) { ... }

    public String getGreeting() {
        return "Hello " + classWithProp.getMyProperty() + "!";
    }
}

@Configuration
public class ConfigClass {
    @Bean
    @RefreshScope
    SomeClassWithAProperty someClassWithAProperty() { ...}

    @Bean
    SomeOtherBean someOtherBean() {
        return new SomeOtherBean(someClassWithAProperty());
    }
}

public class MyAppIT {
    private static final DEFAULT_MY_PROP_VALUE = "World";

    @Autowired
    public SomeOtherBean otherBean;

    @Autowired
    public RefreshScope refreshScope;

    @Test
    public void testRefresh() {
        assertEquals("Hello World!", otherBean.getGreeting());

        [DO SOMETHING HERE TO CHANGE my.property TO "Mars"]
        refreshScope.refreshAll();

        assertEquals("Hello Mars!", otherBean.getGreeting());
    }
}
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Dav*_*yer 5

你可以这样做(我假设你错误地省略了示例顶部的 JUnit 注释,所以我会为你添加它们):

@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = Application.class)
public class MyAppIT {

    @Autowired
    public ConfigurableEnvironment environment;

    @Autowired
    public SomeOtherBean otherBean;

    @Autowired
    public RefreshScope refreshScope;

    @Test
    public void testRefresh() {
        assertEquals("Hello World!", otherBean.getGreeting());

        EnvironmentTestUtils.addEnvironment(environment, "my.property=Mars");
        refreshScope.refreshAll();

        assertEquals("Hello Mars!", otherBean.getGreeting());
    }
}
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但是您并没有真正测试您的代码,只是测试 Spring Cloud 的刷新范围功能(已经针对此类行为进行了广泛测试)。

我很确定你也可以从现有的刷新范围测试中得到这个。