public class ResponseList implements Serializable { private String sku; private String query; private List<QAResponse> responses; // getter and setter}第二類：public class QAResponse implements Serializable { private AnswerLevel answerLevel; private double similarity; private String question; private String dataSource; private String answer; private String ensembleFlag; // getter and setter}我的 JSON (jsonOutput)：{ "sku":"4265252", "query":"\u8fd9\u6b3e\u662f\u5927\u4e00\u5339\u7684\u5440", "QAResponse":[ { "answerLevel":"L1", "similarity":"1.217891", "question":"\u51e0\u5339\u7684", "dataSource":"knowledge", "ensembleFlag":"YES", "answer":"1\u5339\u7684" }}那為什么我的 JSON 對象映射器失敗了呢？ResponseList responseList = null;if (jsonOutput != null) { ObjectMapper mapper = new ObjectMapper(); try { responseList = mapper.readValue(jsonOutput, ResponseList.class); } catch (IOException io) { LOGGER.error(" json mapping to Java object failed!"); io.printStackTrace(); }}錯誤信息：com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "QAResponse" (class com.jnlu.qe.model.ResponseList), not marked as ignorable (3 known properties: "query", "responses", "sku"]) at [Source: (String)"{"sku": "4265252", "query": "\u8fd9\u6b3e\u662f\u5927\u4e00\u5339\u7684\u5440", "QAResponse": [{"answerLevel": "L1", "similarity": "1.217891", "question": "\u51e0\u5339\u7684", "dataSource": "knowledge", "ensembleFlag": "YES", "answer": "1\u5339\u7684"}, {"answerLevel": "L1", "similarity": "1.193976", "question": "\u8fd9\u4e2a\u662f\u51e0\u5339\u7684", "dataSource": "knowledge", "ensembleFlag": "YES", "answer": "\u8fd9\u6b3e\u662f1\u5339\u7684"}, {"answerLevel": "L1", "similarity": "1.179149", ""[truncated 8542 chars]; line: 1, column: 96] (through reference chain: com.jnlu.qe.model.ResponseList["QAResponse"])Why doesn't the "QAResponse" not recognized?
3 回答
素胚勾勒不出你
TA貢獻1827條經驗 獲得超9個贊
它拋出異常，因為在 json 輸入“QAResponse”屬性中不存在。如果您不想將響應更改為類，請添加 @JsonProperty 注釋。
@JsonProperty(value = "QAResponse")
private List<QAResponse> responses;
慕俠2389804
TA貢獻1719條經驗 獲得超6個贊
ResponseList類中的字段名稱錯誤，而是：
private List<QAResponse> responses;
它應該是：
private List<QAResponse> QAResponse;
然而，QAResponse.answerLevel字段很可能是一個String除非AnswerLevel是一個枚舉。
慕尼黑5688855
TA貢獻1848條經驗 獲得超2個贊
我認為這是因為在 JSON 中一個屬性有一個名稱，QAResponse但在一個類中它是一個responses. 所以你必須讓它們具有相同的名稱
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