Spring 升级到新 spring 版本后 MockMvc UnsupportedOperationException

Question

我正在从 Spring 3.2.3.RELEASE 迁移到 Spring 4.2.0.RELEASE。我被卡住了，因为现有的测试开始失败。我的代码看起来像（简化）：

@WebAppConfiguration
@ContextConfiguration(classes = [TestConfig.class])
class MvcTest extends Specification {

    @Autowired
    WebApplicationContext context
    MockMvc mockMvc

    @Subject
    MyController controller

    def setup() {
        controller = new MyController()
        mockMvc = MockMvcBuilders.standaloneSetup(controller).build()
    }

    def "should not allow to save an invalid entity"() {
    when:

    def result = mockMvc.perform(post("/people")
                                         .content('''{
                                            "name": "",
                                            "age": 21,
                                            "sex": 1
                                         }''')
                                         .contentType(MediaType.APPLICATION_JSON)
                                         .accept(MediaType.APPLICATION_JSON))

    then:
    result.andDo(print())
          .andExpect(status().isBadRequest())
          .andExpect(jsonPath('$.message').value("Name cannot be empty."))
    }
}

MyController.java

@Controller
public class MyController {

    @RequestMapping(method = RequestMethod.POST, 
            value = "/people", 
            produces = "application/json", 
            consumes = "application/json")
    @ResponseBody
    public Response create(@RequestBody @Valid Person person) {
        //save person to repository. Debugger is not even entering this line...
    }
}

Person.java:

public class Person {

    private int age;

    @NotEmpty(message = "Name cannot be empty.")
    private String name;

    @NotNull
    @JsonSerialize(using = SexTypeSerializer.class)
    @JsonDeserialize(using = SexTypeDeserializer.class)
    private Sex sex;

    //getters, setters, other methods
}

TestConfig.groovy

@EnableWebMvc
@Configuration
class TestConfig {

    @Bean
    @Primary
    public ObjectMapper objectMapper() {
        def objectMapper = new ObjectMapper()
        def jacksonModule = new SimpleModule()
        jacksonModule.addDeserializer(Sex.class, new SexTypeDeserializer())
        jacksonModule.addSerializer(Sex.class, new SexTypeSerializer())

        objectMapper.registerModule(jacksonModule)
        objectMapper
    }
}

堆栈跟踪：

java.lang.UnsupportedOperationException
at org.springframework.test.web.servlet.setup.StubWebApplicationContext$StubBeanFactory.createBean(StubWebApplicationContext.java:369)
at org.springframework.http.converter.json.SpringHandlerInstantiator.deserializerInstance(SpringHandlerInstantiator.java:68)
at com.fasterxml.jackson.databind.deser.DefaultDeserializationContext.deserializerInstance(DefaultDeserializationContext.java:111)
at com.fasterxml.jackson.databind.deser.BasicDeserializerFactory.findDeserializerFromAnnotation(BasicDeserializerFactory.java:1436)
at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.constructSettableProperty(BeanDeserializerFactory.java:765)
at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.addBeanProps(BeanDeserializerFactory.java:544)
at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.buildBeanDeserializer(BeanDeserializerFactory.java:270)
at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.createBeanDeserializer(BeanDeserializerFactory.java:168)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer2(DeserializerCache.java:401)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer(DeserializerCache.java:350)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(DeserializerCache.java:263)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCacheValueDeserializer(DeserializerCache.java:243)
at com.fasterxml.jackson.databind.deser.DeserializerCache.hasValueDeserializerFor(DeserializerCache.java:193)
at com.fasterxml.jackson.databind.DeserializationContext.hasValueDeserializerFor(DeserializationContext.java:344)
at com.fasterxml.jackson.databind.ObjectMapper.canDeserialize(ObjectMapper.java:2035)
at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.canRead(AbstractJackson2HttpMessageConverter.java:151)
at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver.readWithMessageConverters(AbstractMessageConverterMethodArgumentResolver.java:187)
at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.readWithMessageConverters(RequestResponseBodyMethodProcessor.java:148)
at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.resolveArgument(RequestResponseBodyMethodProcessor.java:125)
at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:78)
at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:162)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:129)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:111)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:806)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:729)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:688)

还提供了自定义序列化程序，并且可以与以前版本的 spring 一起正常工作。我认为配置有问题，因为调用了这样的方法：

StubWebApplicationContext.java

@Override
public <T> T createBean(Class<T> beanClass) {
    throw new UnsupportedOperationException();
}

看起来应该使用一些其他的 createBean 实现。有什么想法吗？

Answer 1

这是 Spring Framework 4.1.3 中引入的重大更改。

我已经创建了一个错误报告来确保这个问题得到解决：

https://jira.spring.io/browse/SPR-13375

感谢您提醒我们注意此事！

顺便说一句，当你使用MockMvcBuilders.standaloneSetup()时，不需要通过@ContextConfiguration和[=13加载一个ApplicationContext =].如果你分析你的测试 class，你会发现你实际上什至没有使用你有 @Autowired 的 WebApplicationContext 到你的测试中。因此，您可以安全地删除所有该配置。

还请注意，您的 TestConfig 未在 MockMvc 中使用 ，因为您正在使用 MockMvcBuilders.standaloneSetup() 来测试控制器的实例直接地。换句话说，您的自定义 SexTypeDeserializer 未在这样配置的测试中使用。如果您想继续使用独立设置，您可以使用自定义配置的 ObjectMapper（连同您的自定义序列化程序等）配置 MappingJackson2HttpMessageConverter，并将其传递给 StandaloneMockMvcBuilder通过其 setMessageConverters(...) 方法。

作为替代方案，您可以考虑使用 MockMvcBuilders.webAppContextSetup(context) 以便在您的测试中实际使用您的 SexTypeDeserializer 以及其余的生产 Spring MVC 配置。

Spring 升级到新 spring 版本后 MockMvc UnsupportedOperationException

Spring MockMvc UnsupportedOperationException after upgrading to new spring version

java

spring

spring-mvc

spring-test

jackson