关于java：Spring MVC Rest Controller @RequestBody Parsing

Spring MVC Rest Controller @RequestBody Parsing

我有一个SpringRestWeb应用程序，它包含一个通用的REST控制器，如下所示。让Jackson将对象序列化为JSON，get方法工作得很好。但是，当我尝试调用save方法时，RequestBody参数将被转换为LinkedHashMap，而不是T泛型类型定义的类型。

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@RestController
public abstract class CrudAPI<T extends Object, ID extends Serializable>{

@Transactional
@RequestMapping(method = RequestMethod.POST, consumes ="application/json")
public ResponseEntity<Void> save(@RequestBody T entity){
service.save(entity);
return new ResponseEntity(HttpStatus.CREATED);
}

}

JSON：

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{
"id":null,
"version":null,
"name":"Copel",
"disabled":false,
"type":"P",
"labels":[
{
"id":null,
"version":null,
"name":"unidade consumidora"
}
]
}

号

我得到以下错误：

HTTP Status 500 - Request processing failed; nested exception is
org.springframework.beans.NotReadablePropertyException: Invalid
property 'version' of bean class [java.util.LinkedHashMap]: Could not
find field for property during fallback access!

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弹簧配置：

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@Configuration
@Import(Application.class)
@EnableWebMvc
@ComponentScan(basePackages = {"br.com.doc2cloud"})
public class WebConfig extends WebMvcConfigurerAdapter implements WebApplicationInitializer {

@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}

private MappingJackson2HttpMessageConverter jacksonConverter() {
ObjectMapper mapper = new ObjectMapper();
mapper.registerModule(new Hibernate5Module());
mapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
mapper.setDateFormat(new ISO8601DateFormat());
mapper.setVisibility(PropertyAccessor.ALL, Visibility.NONE);
mapper.setVisibility(PropertyAccessor.FIELD, Visibility.ANY);
mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);

MappingJackson2HttpMessageConverter jacksonConverter = new MappingJackson2HttpMessageConverter();
jacksonConverter.setObjectMapper(mapper);

return jacksonConverter;
}

@Override
public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
converters.add(jacksonConverter());
super.configureMessageConverters(converters);
}

@Override
public void onStartup(ServletContext servletContext) throws ServletException {
servletContext.setInitParameter("javax.servlet.jsp.jstl.fmt.localizationContext","messages");
EnumSet<DispatcherType> dispatcherTypes = EnumSet.of(DispatcherType.REQUEST, DispatcherType.FORWARD);
CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter();
characterEncodingFilter.setEncoding("UTF-8");
characterEncodingFilter.setForceEncoding(true);
FilterRegistration.Dynamic characterEncoding = servletContext.addFilter("characterEncoding", characterEncodingFilter);
characterEncoding.addMappingForUrlPatterns(dispatcherTypes, true,"/*");
}
}

我的代码有什么问题？