spring java.lang.IllegalArgumentException：需要 ServletContext 来配置默认的 servlet 处理
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java.lang.IllegalArgumentException: A ServletContext is required to configure default servlet handling
提问by balteo
I have the following test class:
我有以下测试类：
@ActiveProfiles({ "DataTC", "test" })
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = {BaseTestConfiguration.class, DataTestConfiguration.class, JpaConfiguration.class, PropertyPlaceholderConfiguration.class })
public class RegularDayToTimeSlotsTest {
...
The issue seems to come from the BaseTestConfiguration class:
问题似乎来自 BaseTestConfiguration 类：
@Configuration
@ComponentScan(basePackages = { "com.bignibou" }, excludeFilters = { @Filter(type = FilterType.CUSTOM, value = RooRegexFilter.class),
@Filter(type = FilterType.ANNOTATION, value = Controller.class), @Filter(type = FilterType.ANNOTATION, value = ControllerAdvice.class) })
public class BaseTestConfiguration {
}
I systematically get this exception:
我系统地得到了这个例外：
Caused by: java.lang.IllegalArgumentException: A ServletContext is required to configure default servlet handling
at org.springframework.util.Assert.notNull(Assert.java:112)
at org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer.<init>(DefaultServletHandlerConfigurer.java:54)
at org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.defaultServletHandlerMapping(WebMvcConfigurationSupport.java:329)
at org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration$$EnhancerByCGLIB$$bb4ceb44.CGLIB$defaultServletHandlerMapping(<generated>)
at org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration$$EnhancerByCGLIB$$bb4ceb44$$FastClassByCGLIB$8bb5c1.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:326)
at org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration$$EnhancerByCGLIB$$bb4ceb44.defaultServletHandlerMapping(<generated>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:166)
... 43 more
I am not sure how to get around this issue. Somehow Spring is looking for a ServletContext when I run the test and I get the above exception...
我不知道如何解决这个问题。不知何故，当我运行测试时，Spring 正在寻找一个 ServletContext 并且我得到了上述异常......
回答by Sam Brannen
One of your @Configurationclasses is obviously annotated with @EnableWebMvc. That's how DelegatingWebMvcConfigurationends up in your stack trace, since it is importedby @EnableWebMvc.
你的一个@Configuration类显然用@EnableWebMvc. 这是如何DelegatingWebMvcConfiguration结束在你的堆栈跟踪，因为它是进口的@EnableWebMvc。
So although you thinkyou don't need a WebApplicationContext(and hence a ServletContext), you in fact do need it simply because you are loading an application context with @EnableWebMvc.
因此，尽管您认为不需要 a WebApplicationContext（因此不需要 a ServletContext），但实际上您确实需要它，因为您正在使用@EnableWebMvc.
You have two options:
您有两个选择：
- Compose the configuration classes for your integration test so that you are not including the web-related configuration (i.e., the
@Configurationclass(es) annotated with@EnableWebMvc). - Annotate your test class with
@WebAppConfigurationas suggested in other comments above.
- 为您的集成测试编写配置类，这样您就不会包含与 Web 相关的配置（即
@Configuration用 注释的类@EnableWebMvc）。 @WebAppConfiguration按照上面其他评论中的建议对您的测试类进行注释。
Regards,
问候，
Sam (author of the Spring TestContext Framework)
Sam（Spring TestContext 框架的作者）
回答by Sotirios Delimanolis
It seems like you are missing
好像你失踪了
@WebAppConfiguration
from your test class.
从你的测试课。
The documentationstates
该文件指出
The resource base path is used behind the scenes to create a MockServletContext which serves as the ServletContext for the test's WebApplicationContext.
资源基本路径在幕后用于创建 MockServletContext，该 MockServletContext 作为测试的 WebApplicationContext 的 ServletContext。
Typically a Servlet container would provide the ServletContext. Since you are in a testing environment, you need a fake. @WebAppConfigurationprovides that.
通常 Servlet 容器会提供ServletContext. 由于您处于测试环境中，因此您需要一个假的。@WebAppConfiguration规定。
回答by Hrishikesh
For you to instantiate the Servlet context, you would have to use the annotation.
为了实例化 Servlet 上下文，您必须使用注释。
@WebAppConfiguration
A class-level annotation that is used to declare that the ApplicationContext loaded for an integration test should be a WebApplicationContext. The mere presence of @WebAppConfiguration on a test class ensures that a WebApplicationContext will be loaded for the test, using the default value of "file:src/main/webapp" for the path to the root of the web application (i.e., the resource base path). The resource base path is used behind the scenes to create a MockServletContext which serves as the ServletContext for the test's WebApplicationContext.
用于声明为集成测试加载的 ApplicationContext 应该是 WebApplicationContext 的类级别注释。@WebAppConfiguration 在测试类上的存在确保为测试加载 WebApplicationContext，使用默认值“file:src/main/webapp”作为 Web 应用程序根目录的路径（即资源基本路径）。资源基本路径在幕后用于创建 MockServletContext，该 MockServletContext 作为测试的 WebApplicationContext 的 ServletContext。
回答by Robert Hunt
I was getting a similar error but whilst running the application normally rather than trying to run tests.
我遇到了类似的错误，但同时正常运行应用程序而不是尝试运行测试。
It turns out if you're making use of a custom PermissionEvaluatorthen you need to declare it in a separate @Configurationclass to the one with your main Spring security configuration in.
事实证明，如果您正在使用自定义，PermissionEvaluator那么您需要在一个单独的@Configuration类中将其声明为包含主要 Spring 安全配置的类。
See: How do I add method based security to a Spring Boot project?
请参阅：如何向 Spring Boot 项目添加基于方法的安全性？
There is also an open Github issue: https://github.com/spring-projects/spring-boot/issues/4875
还有一个开放的 Github issue：https: //github.com/spring-projects/spring-boot/issues/4875
