Question

我有一个POJO类和Mixin，如下所示。

在调用Jackson时，我希望{'enquiry_id':'1234'}可以工作，但是不会调用setter方法，并且getter返回null。当我将其作为{'enquiryId':'1234'}输入时，它会正确反序列化。

在使用Mixin之前，我直接在类中使用了相同的注释，并且没有遇到这个问题。

public class Party {
  private String enquiryId;
  public String getEnquiryId() {
    return enquiryId;
  }

  public String setEnquiryId(String enquiryId) {
    this.enquiryId = enquiryId;
  }
}

public abstract class PartyMixIn {
    @JsonProperty("enquiry_id") String enquiryId;
}

任何人都可以详细说明为何Jackson Mixin Deserializer不调用Party Class的setEnquiryId(String enquiryId)方法。

示例用法

import io.swagger.annotations.ApiOperation;
import io.swagger.annotation.Api;
@Api(value = "Party Api")
@RestController
public class MainController {
    @ApiOperation(value = "Process Party", notes = "Example usage {'enquiry_id':'1234'}")
    @RequestMapping(value = "process", method = RequestMethod.POST, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
    public Party process(@RequestBody Party party) throws IOException, HttpException {
        // Here i get party.getEnquiryId() as null
        return party;
    }
}

@Configuration
@EnableWebMvc
@EnableCaching
public class SpringConfig extends WebMvcConfigurerAdapter {

    @Override
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        for (HttpMessageConverter<?> mc : converters) {
             if (mc instanceof MappingJackson2HttpMessageConverter || mc instanceof MappingJackson2XmlHttpMessageConverter) {
                ((AbstractJackson2HttpMessageConverter) mc).getObjectMapper().addMixIn(Party.class, PartyMixIn.class);
            }
        }
        return;
    }
}

杰克逊·米金解串器未调用二传手

0 个答案: