springmvc jackson Unrecognized field xx （大写字段不识别）

问题：

public class PhoneControl {

    private String IMEI;

    private String IMEI2;

    private String SN;

    private String verifyCode;

 

对如下JSON数据 ，

{"verifyCode":"23333333","SN":"3903C18704D00047","IMEI":"111112222334234","IMEI2":"111112222334234"}

进行转换时，报错如下：

com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException:

Unrecognized field "SN" (class com.test.vo.PhoneControl), not marked as ignorable (4 known properties: "imei", "imei2", "sn", "verifyCode"])
 at [Source: (String)"{"verifyCode":"23333333","SN":"3903C18704D00047","IMEI":"111112222334234","IMEI2":"111112222334234"}"; line: 1, column: 32] (through reference chain: com.tplink.vo.PhoneControl["SN"])
    at com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException.from(UnrecognizedPropertyException.java:60)

解决方法：

public class PhoneControl {

    @JsonProperty(value = "IMEI")
    private String IMEI;

    @JsonProperty(value = "IMEI2")
    private String IMEI2;

    @JsonProperty(value = "SN")
    private String SN;

    private String verifyCode;