封送JSON时，Jackson忽略XmlElement名称/大小写

Question

我正在尝试从XSD-> POJO-> JSON转到要区分大小写的UPS跟踪API。我在生成的JSON中使用Jackson 2.6.7。当我在下面看到时，我看到了骆驼箱的名称：

"TrackRequest": { "InquiryNumber": "1Z12345E6205277936" }

生成的Java bean的注释如下：

@XmlElement(name = "TrackRequest")
protected TrackRequest trackRequest;

我尝试了一些映射功能设置，例如USE_WRAPPER_NAME_AS_PROPERTY_NAME和USE_STD_BEAN_NAMING，它们似乎并没有达到预期的效果。

我正在生成JSON，如下所示：

ObjectMapper mapper = new ObjectMapper();
String jsonRequest = mapper.writeValueAsString(upsRequest);

upsRequest bean看起来像这样：

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = {
    "upsSecurity",
    "trackRequest"
})
@XmlRootElement(name = "Request")
public class Request {

    @XmlElement(name = "UPSSecurity")
    protected UPSSecurity upsSecurity;
    @XmlElement(name = "TrackRequest")
    protected TrackRequest trackRequest;

    /**
     * Gets the value of the upsSecurity property.
     * 
     * @return
     *     possible object is
     *     {@link UPSSecurity }
     *     
     */
    public UPSSecurity getUPSSecurity() {
        return upsSecurity;
    }

    /**
     * Sets the value of the upsSecurity property.
     * 
     * @param value
     *     allowed object is
     *     {@link UPSSecurity }
     *     
     */
    public void setUPSSecurity(UPSSecurity value) {
        this.upsSecurity = value;
    }

    /**
     * Gets the value of the trackRequest property.
     * 
     * @return
     *     possible object is
     *     {@link TrackRequest }
     *     
     */
    public TrackRequest getTrackRequest() {
        return trackRequest;
    }

    /**
     * Sets the value of the trackRequest property.
     * 
     * @param value
     *     allowed object is
     *     {@link TrackRequest }
     *     
     */
    public void setTrackRequest(TrackRequest value) {
        this.trackRequest = value;
    }

}

根据文档，除非缺少某些内容，否则我应该会获得所需的输出

Answer 1

默认情况下不支持JAXB批注。您需要添加jackson-module-jaxb-annotations模块，然后在中注册该模块ObjectMapper。

ObjectMapper mapper = new ObjectMapper();
mapper.registerModule(new JaxbAnnotationModule());