com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException：無法識別的字段“消息”異常

Question

請檢查以下代碼

import java.util.HashMap;
import java.util.Map;

import com.fasterxml.jackson.annotation.*;

@JsonInclude(JsonInclude.Include.NON_NULL)
@JsonPropertyOrder({
        "countryCode",
        "description",
        "message"
})

public class Country {

    @JsonProperty("countryCode")
    private String countryCode;
    @JsonProperty("description")
    private String description;
    @JsonIgnore
    private Map<String, Object> additionalProperties = new HashMap<String, Object>();

    @JsonProperty("countryCode")
    public String getCountryCode() {
        return countryCode;
    }

    @JsonProperty("countryCode")
    public void setCountryCode(String countryCode) {
        this.countryCode = countryCode;
    }

    @JsonProperty("description")
    public String getDescription() {
        return description;
    }

    @JsonProperty("description")
    public void setDescription(String description) {
        this.description = description;
    }

    @JsonAnyGetter
    public Map<String, Object> getAdditionalProperties() {
        return this.additionalProperties;
    }

    @JsonAnySetter
    public void setAdditionalProperty(String name, Object value) {
        this.additionalProperties.put(name, value);
    }

}

下面是堆棧跟蹤

com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "message" (class Dialog.Api.Testing.ReferenceData.models.Country), not marked as ignorable (2 known properties: "countryCode", "description"])
     at [Source: (String)"{"message":"Success","code":"0000","traceId":"abc1234567","origin":"/reference-data/countries","details":"https://confluence.coe.dialog.lk/display/CRMREW/Error+Codes","timestamp":"2020-07-09 15:28:38","data":{"countries":[{"countryCode":"ALBVF","description":"ALBANIA"},{"countryCode":"ALG","description":"ALGERIA"},{"countryCode":"DZA","description":"ALGERIE"},{"countryCode":"AND","description":"ANDORA"},{"countryCode":"ANT","description":"ANTIGUA"},{"countryCode":"ARG","description":"ARGENTINA"}"[truncated 14184 chars]; line: 1, column: 13] (through reference chain: Dialog.Api.Testing.ReferenceData.models.Country["message"])

Answer 1

在你的@JsonInclude你放了 3 個屬性。 另一方面，您不會將 setter 和 getter 添加到消息屬性。

與： Jackson 與 JSON 重復：無法識別的字段，未標記為可忽略

Answer 2

您提到的 class 中沒有名稱為 message 的屬性。 您的代碼中是否缺少某些內容？ 如果您嘗試將消息值放入 map 中，則應刪除@JsonPropertyOrder處的消息屬性規范。