Java 弹簧启动测试用例不';不要使用自定义转换服务
我正在尝试编写一个带有Spring启动测试的集成测试用例 我定制了Java 弹簧启动测试用例不';不要使用自定义转换服务,java,spring,spring-boot,dependency-management,Java,Spring,Spring Boot,Dependency Management,我正在尝试编写一个带有Spring启动测试的集成测试用例 我定制了ConversionService,以了解新的java.time类型: @Configuration public class ConversionServiceConfiguration { @Bean public static ConversionService conversionService() { final FormattingConversionService reg = new
ConversionService
,以了解新的java.time
类型:
@Configuration
public class ConversionServiceConfiguration {
@Bean
public static ConversionService conversionService() {
final FormattingConversionService reg = new DefaultFormattingConversionService();
new DateTimeFormatterRegistrar().registerFormatters(reg);
return reg;
}
}
然后期待它能起作用:
@Component
class MyServiceConfig {
@Value("${max-watch-time:PT20s}")
private Duration maxWatchTime = Duration.ofSeconds(20);
}
在正常的SpringApplication.run下运行时,这似乎工作正常。但是,在我的测试用例中:
@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment=WebEnvironment.RANDOM_PORT, classes= {
MyServiceMain.class,
AttachClientRule.class
})
public class MyTest {
@Inject
@Rule
public AttachClientRule client;
@Test(expected=IllegalArgumentException.class)
public void testBad() throws Exception {
client.doSomethingIllegal();
}
}
它爆炸了:
原因:org.springframework.beans.factory.unsatifiedDependencyException:创建名为“AttachClientRule”的bean时出错:通过构造函数参数0表示的未满足依赖项:
创建名为“MyServiceConfig”的bean时出错:通过字段“maxWatchTime”表示的未满足的依赖关系:未能将类型为[java.lang.String]的值转换为所需类型[java.time.Duration]
嵌套异常为java.lang.IllegalStateException:无法将类型为[java.lang.String]的值转换为所需类型[java.time.Duration]:未找到匹配的编辑器或转换策略
深入查看执行实际转换的TypeConverterDelegate
,它似乎捕获了从DefaultListableBeanFactory
上的字段使用的ConversionService
。在设置该字段的位置设置观察点,我发现AbstractApplicationContext.refresh()
方法:
// Allows post-processing of the bean factory in context subclasses.
postProcessBeanFactory(beanFactory);
// Invoke factory processors registered as beans in the context.
invokeBeanFactoryPostProcessors(beanFactory);
// Register bean processors that intercept bean creation.
registerBeanPostProcessors(beanFactory);
// Initialize message source for this context.
initMessageSource();
// Initialize event multicaster for this context.
initApplicationEventMulticaster();
// Initialize other special beans in specific context subclasses.
onRefresh(); // <--- MyServiceConfig initialized here
// Check for listener beans and register them.
registerListeners();
// Instantiate all remaining (non-lazy-init) singletons.
finishBeanFactoryInitialization(beanFactory); // <--- DefaultListableBeanFactory.conversionService set here!!!
// Last step: publish corresponding event.
finishRefresh();
这会迫使初始化提前进行,但感觉不是正确的解决方案(至少没有这样的文档记录)
我哪里出错了?
弹簧4.3.0,弹簧防尘套1.4.0M3
编辑
现在我发现了另一种失败的方法!不使同一配置类实现环境感知
:
@Override
public void setEnvironment(Environment environment) {
((AbstractEnvironment) environment).setConversionService(conversionService());
}
我发现PropertySourcesPropertyResolver
使用了错误的(默认)ConversionService
。这让我快发疯了
原因:java.lang.IllegalArgumentException:无法将值[PT15s]从源类型[String]转换为目标类型[Duration]
位于org.springframework.core.env.PropertySourcesPropertyResolver.getProperty(PropertySourcesPropertyResolver.java:94)
位于org.springframework.core.env.PropertySourcesPropertyResolver.getProperty(PropertySourcesPropertyResolver.java:65)
位于org.springframework.core.env.AbstractPropertyResolver.getProperty(AbstractPropertyResolver.java:143)
位于org.springframework.core.env.AbstractEnvironment.getProperty(AbstractEnvironment.java:546)
在com.mycorp.DoSomething.go(DoSomething.java:103)
尝试从
conversionService
bean定义中删除static
关键字。Spring Boot开发人员已经确认,这是一个文档记录不完整的问题,不能按规定工作:谢谢,但这似乎没有帮助。
@Override
public void setEnvironment(Environment environment) {
((AbstractEnvironment) environment).setConversionService(conversionService());
}