我遇到了上述错误,是由于Jackson尝试反序列化我的POJO时出现了问题。
我已经对代码进行了调试,发现在Jackson的ObjectMapper中返回了false:
public boolean canRead(Type type, Class<?> contextClass, MediaType mediaType) {
JavaType javaType = getJavaType(type, contextClass);
return (this.objectMapper.canDeserialize(javaType) && canRead(mediaType));
}
this.objectMapper.canDeserialize(javaType) 返回 false 导致了错误。
我的控制器如下:
@Controller
public class CancelController {
@Autowired
private CancelService cancelService;
@RequestMapping( value="/thing/cancel", method=RequestMethod.POST, consumes="application/json" )
public @ResponseBody CancelThingResponseDTO cancelThing(@RequestBody CancelRequestDTO cancelThingRequest) {
return cancelService.cancelThing(cancelThingRequest);
}
我的CancelRequestDTO实现了Serializable接口:
public class CancelRequestDTO implements Serializable{
/**
* Default serialization ID
*/
private static final long serialVersionUID = 1L;
/**
* Reason code associated with the request
*/
private final String reasonCode;
/**
* Identifier of the entity associated with the request
*/
private final EntityIdentifier entityIdentifier;
/**
* Default constructor
*
* @param reasonCode Reason code associated with the request
* @param entityIdentifier Identifier of the entity associated with the request
*/
public CancelRequestDTO(String reasonCode, EntityIdentifier entityIdentifier) {
super();
this.reasonCode = reasonCode;
this.entityIdentifier = entityIdentifier;
}
/**
* @return Returns the reasonCode.
*/
public String getReasonCode() {
return reasonCode;
}
/**
* @return Returns the entityIdentifier.
*/
public EntityIdentifier getEntityIdentifier() {
return entityIdentifier;
}
}
我的Spring配置如下:
<!-- DispatcherServlet Context: defines this servlet's request-processing
infrastructure -->
<!-- Enables the Spring MVC @Controller programming model -->
<mvc:annotation-driven />
<!-- Scan for stereotype annotations -->
<context:component-scan base-package="com.cancel.web.controller" />
<bean id="viewNameTranslator"
class="org.springframework.web.servlet.view.DefaultRequestToViewNameTranslator" />
<bean class="org.springframework.web.servlet.view.BeanNameViewResolver" />
<bean id="jsonView"
class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" >
<property name="contentType" value="application/json;charset=UTF-8"/>
</bean>
<!-- Register JSON Converter for RESTful Web Service -->
<bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="messageConverters">
<list>
<bean
class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
</bean>
</list>
</property>
</bean>
有人知道是什么导致了这个反序列化问题吗?
谢谢