Spring 为 MethodArgumentNotValidException 使用 @ValidExceptionHandler 启动 @RequestBody
Spring boot @RequestBody with @Valid- ExceptionHandler for MethodArgumentNotValidException
我想将@Valid 注释与@RequestBody 注释一起使用，并在我自己的方法中处理错误，该方法使用@ExceptionHandler 注释进行注释。我总是想要 ReponseEntity 的 return 个实例。但是当我为 MethodArgumentNotValidException 创建 ExceptionHandler 时，我无法启动我的应用程序。我的控制器看起来像这样：
@PostMapping("/places/report")
public ResponseEntity<WrongPlaceReportDTO> report(@RequestHeader(value="Accept-Language") String acceptLanguage,
WrongPlaceReportDTO result = wrongPlaceReportService.save(wrongPlaceReportDto, Locale.forLanguageTag(acceptLanguage));
return new ResponseEntity<WrongPlaceReportDTO>(result, HttpStatus.OK);
}
我的全局异常处理程序如下所示：
@ControllerAdvice
public class RestResponseEntityExceptionHandler extends ResponseEntityExceptionHandler {
@ExceptionHandler(value = MethodArgumentNotValidException.class)
public ResponseEntity<RestResponse<Void>> handleMethodArgumentNotValidException(MethodArgumentNotValidException error, WebRequest request) {
return parseErrors(error.getBindingResult());
}
private ResponseEntity<RestResponse<Void>> parseErrors(BindingResult bindingResult){
return new ResponseEntity<RestResponse<Void>>(HttpStatus.BAD_REQUEST);
}
}
当我启动我的 SpringBoot 应用程序时，我得到了这个：
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'handlerExceptionResolver' defined in class path resource [org/springframework/boot/autoconfigure/web/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.web.servlet.HandlerExceptionResolver]: Factory method 'handlerExceptionResolver' threw exception; nested exception is java.lang.IllegalStateException: Ambiguous @ExceptionHandler method mapped for [class org.springframework.web.bind.MethodArgumentNotValidException]: {public org.springframework.http.ResponseEntity com.polibuda.pbl.endpoint.RestResponseEntityExceptionHandler.handleMethodArgumentNotValidException(org.springframework.web.bind.MethodArgumentNotValidException,org.springframework.web.context.request.WebRequest), public final org.springframework.http.ResponseEntity org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler.handleException(java.lang.Exception,org.springframework.web.context.request.WebRequest)}
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1173) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1067) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867) ~[spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543) ~[spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693) [spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360) [spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118) [spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107) [spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]
at com.polibuda.pbl.Application.main(Application.java:11) [bin/:na]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.web.servlet.HandlerExceptionResolver]: Factory method 'handlerExceptionResolver' threw exception; nested exception is java.lang.IllegalStateException: Ambiguous @ExceptionHandler method mapped for [class org.springframework.web.bind.MethodArgumentNotValidException]: {public org.springframework.http.ResponseEntity com.polibuda.pbl.endpoint.RestResponseEntityExceptionHandler.handleMethodArgumentNotValidException(org.springframework.web.bind.MethodArgumentNotValidException,org.springframework.web.context.request.WebRequest), public final org.springframework.http.ResponseEntity org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler.handleException(java.lang.Exception,org.springframework.web.context.request.WebRequest)}
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
... 18 common frames omitted
Caused by: java.lang.IllegalStateException: Ambiguous @ExceptionHandler method mapped for [class org.springframework.web.bind.MethodArgumentNotValidException]: {public org.springframework.http.ResponseEntity com.polibuda.pbl.endpoint.RestResponseEntityExceptionHandler.handleMethodArgumentNotValidException(org.springframework.web.bind.MethodArgumentNotValidException,org.springframework.web.context.request.WebRequest), public final org.springframework.http.ResponseEntity org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler.handleException(java.lang.Exception,org.springframework.web.context.request.WebRequest)}
at org.springframework.web.method.annotation.ExceptionHandlerMethodResolver.addExceptionMapping(ExceptionHandlerMethodResolver.java:109) ~[spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.web.method.annotation.ExceptionHandlerMethodResolver.<init>(ExceptionHandlerMethodResolver.java:76) ~[spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver.initExceptionHandlerAdviceCache(ExceptionHandlerExceptionResolver.java:269) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver.afterPropertiesSet(ExceptionHandlerExceptionResolver.java:245) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.addDefaultHandlerExceptionResolvers(WebMvcConfigurationSupport.java:883) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$EnableWebMvcConfiguration.configureHandlerExceptionResolvers(WebMvcAutoConfiguration.java:450) ~[spring-boot-autoconfigure-1.5.4.RELEASE.jar:1.5.4.RELEASE]
at org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.handlerExceptionResolver(WebMvcConfigurationSupport.java:826) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$dca415.CGLIB$handlerExceptionResolver(<generated>) ~[spring-boot-autoconfigure-1.5.4.RELEASE.jar:1.5.4.RELEASE]
at org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$dca415$$FastClassBySpringCGLIB$$b06cae28.invoke(<generated>) ~[spring-boot-autoconfigure-1.5.4.RELEASE.jar:1.5.4.RELEASE]
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:358) ~[spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$dca415.handlerExceptionResolver(<generated>) ~[spring-boot-autoconfigure-1.5.4.RELEASE.jar:1.5.4.RELEASE]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_152]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_152]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_152]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_152]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
... 19 common frames omitted
对于另一种类型的异常，一切正常，但我无法为 MethodArgumentNotValidException 创建 ExceptionHandler。我做错了什么？
Spring 对使用哪个处理程序感到困惑，因为父 class 方法 ResponseEntityExceptionHandler.handleException 已经在处理类型 MethodArgumentNotValidException.
的异常
不要用 ResponseEntityExceptionHandler 扩展你的 class 一切都会
工作正常。
可能会迟到，但如果您仍想扩展 ResponseEntityExceptionHandler，您可以覆盖 ResponseEntityExceptionHandler 中您想要更改的任何其他方法。例如，我的 ExceptionHandler 没有选择 HttpMessageNotReadableException 并且我仍然需要使用 ResponseEntityExceptionHandler 因为我们有其他自定义逻辑所以我覆盖了另一个负责我的情况的方法是添加这个。
@Override
protected ResponseEntity<Object> handleHttpMessageNotReadable(HttpMessageNotReadableException ex, HttpHeaders headers, HttpStatus status, WebRequest request) {
return super.handleHttpMessageNotReadable(ex, headers, status, request);
}
我想将@Valid 注释与@RequestBody 注释一起使用，并在我自己的方法中处理错误，该方法使用@ExceptionHandler 注释进行注释。我总是想要 ReponseEntity 的 return 个实例。但是当我为 MethodArgumentNotValidException 创建 ExceptionHandler 时，我无法启动我的应用程序。我的控制器看起来像这样：
@PostMapping("/places/report")
public ResponseEntity<WrongPlaceReportDTO> report(@RequestHeader(value="Accept-Language") String acceptLanguage,
WrongPlaceReportDTO result = wrongPlaceReportService.save(wrongPlaceReportDto, Locale.forLanguageTag(acceptLanguage));
return new ResponseEntity<WrongPlaceReportDTO>(result, HttpStatus.OK);
}
我的全局异常处理程序如下所示：
@ControllerAdvice
public class RestResponseEntityExceptionHandler extends ResponseEntityExceptionHandler {
@ExceptionHandler(value = MethodArgumentNotValidException.class)
public ResponseEntity<RestResponse<Void>> handleMethodArgumentNotValidException(MethodArgumentNotValidException error, WebRequest request) {
return parseErrors(error.getBindingResult());
}
private ResponseEntity<RestResponse<Void>> parseErrors(BindingResult bindingResult){
return new ResponseEntity<RestResponse<Void>>(HttpStatus.BAD_REQUEST);
}
}
当我启动我的 SpringBoot 应用程序时，我得到了这个：
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'handlerExceptionResolver' defined in class path resource [org/springframework/boot/autoconfigure/web/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.web.servlet.HandlerExceptionResolver]: Factory method 'handlerExceptionResolver' threw exception; nested exception is java.lang.IllegalStateException: Ambiguous @ExceptionHandler method mapped for [class org.springframework.web.bind.MethodArgumentNotValidException]: {public org.springframework.http.ResponseEntity com.polibuda.pbl.endpoint.RestResponseEntityExceptionHandler.handleMethodArgumentNotValidException(org.springframework.web.bind.MethodArgumentNotValidException,org.springframework.web.context.request.WebRequest), public final org.springframework.http.ResponseEntity org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler.handleException(java.lang.Exception,org.springframework.web.context.request.WebRequest)}
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1173) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1067) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867) ~[spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543) ~[spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693) [spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360) [spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118) [spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107) [spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]
at com.polibuda.pbl.Application.main(Application.java:11) [bin/:na]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.web.servlet.HandlerExceptionResolver]: Factory method 'handlerExceptionResolver' threw exception; nested exception is java.lang.IllegalStateException: Ambiguous @ExceptionHandler method mapped for [class org.springframework.web.bind.MethodArgumentNotValidException]: {public org.springframework.http.ResponseEntity com.polibuda.pbl.endpoint.RestResponseEntityExceptionHandler.handleMethodArgumentNotValidException(org.springframework.web.bind.MethodArgumentNotValidException,org.springframework.web.context.request.WebRequest), public final org.springframework.http.ResponseEntity org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler.handleException(java.lang.Exception,org.springframework.web.context.request.WebRequest)}
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
... 18 common frames omitted
Caused by: java.lang.IllegalStateException: Ambiguous @ExceptionHandler method mapped for [class org.springframework.web.bind.MethodArgumentNotValidException]: {public org.springframework.http.ResponseEntity com.polibuda.pbl.endpoint.RestResponseEntityExceptionHandler.handleMethodArgumentNotValidException(org.springframework.web.bind.MethodArgumentNotValidException,org.springframework.web.context.request.WebRequest), public final org.springframework.http.ResponseEntity org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler.handleException(java.lang.Exception,org.springframework.web.context.request.WebRequest)}
at org.springframework.web.method.annotation.ExceptionHandlerMethodResolver.addExceptionMapping(ExceptionHandlerMethodResolver.java:109) ~[spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.web.method.annotation.ExceptionHandlerMethodResolver.<init>(ExceptionHandlerMethodResolver.java:76) ~[spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver.initExceptionHandlerAdviceCache(ExceptionHandlerExceptionResolver.java:269) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver.afterPropertiesSet(ExceptionHandlerExceptionResolver.java:245) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.addDefaultHandlerExceptionResolvers(WebMvcConfigurationSupport.java:883) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$EnableWebMvcConfiguration.configureHandlerExceptionResolvers(WebMvcAutoConfiguration.java:450) ~[spring-boot-autoconfigure-1.5.4.RELEASE.jar:1.5.4.RELEASE]
at org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.handlerExceptionResolver(WebMvcConfigurationSupport.java:826) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$dca415.CGLIB$handlerExceptionResolver(<generated>) ~[spring-boot-autoconfigure-1.5.4.RELEASE.jar:1.5.4.RELEASE]
at org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$dca415$$FastClassBySpringCGLIB$$b06cae28.invoke(<generated>) ~[spring-boot-autoconfigure-1.5.4.RELEASE.jar:1.5.4.RELEASE]
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:358) ~[spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$dca415.handlerExceptionResolver(<generated>) ~[spring-boot-autoconfigure-1.5.4.RELEASE.jar:1.5.4.RELEASE]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_152]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_152]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_152]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_152]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
... 19 common frames omitted
对于另一种类型的异常，一切正常，但我无法为 MethodArgumentNotValidException 创建 ExceptionHandler。我做错了什么？
Spring 对使用哪个处理程序感到困惑，因为父 class 方法 ResponseEntityExceptionHandler.handleException 已经在处理类型 MethodArgumentNotValidException.
不要用 ResponseEntityExceptionHandler 扩展你的 class 一切都会
工作正常。
可能会迟到，但如果您仍想扩展 ResponseEntityExceptionHandler，您可以覆盖 ResponseEntityExceptionHandler 中您想要更改的任何其他方法。例如，我的 ExceptionHandler 没有选择 HttpMessageNotReadableException 并且我仍然需要使用 ResponseEntityExceptionHandler 因为我们有其他自定义逻辑所以我覆盖了另一个负责我的情况的方法是添加这个。
@Override
protected ResponseEntity<Object> handleHttpMessageNotReadable(HttpMessageNotReadableException ex, HttpHeaders headers, HttpStatus status, WebRequest request) {
return super.handleHttpMessageNotReadable(ex, headers, status, request);
}