傑克遜Deserialising：com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException：

我想deserialise以下JSON轉換成Java對象，但抱怨它不能夠識別ACCESSLEVEL財產。請參閱以下內容：傑克遜Deserialising：com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException：

{ 
    "Role1": [ 
     { 
      "path": "/1_order/1_general/customer.comp.json", 
      "accesslevel": "ENABLED" 
     }, 
     { 
      "path": "/1_order/1_general/CustomerComponent.json", 
      "accesslevel": "DISABLED" 
     }, 
     { 
      "path": "/2_help/DummyComponent.json", 
      "accesslevel": "ENABLED" 
     } 
    ] 
}

Java對象的樣子：

public class AccessLevelConfigWrapper { 

    HashMap<String, List<AccessLevelDetails>> listOfRoles; 

    public AccessLevelConfigWrapper() { 

    } 

    public HashMap<String, List<AccessLevelDetails>> getListOfRoles() { 
     return listOfRoles; 
    } 

    public void setListOfRoles(HashMap<String, List<AccessLevelDetails>> listOfRoles) { 
     this.listOfRoles = listOfRoles; 
    } 

}

AccessLevelDetails：

public class AccessLevelDetails { 

    @JsonProperty 
    private String accessLevel; 
    @JsonProperty 
    private String path; 

    public String getAccessLevel() { 
     return accessLevel; 
    } 

    public void setAccessLevel(String accessLevel) { 
     this.accessLevel = accessLevel; 
    } 

    public String getPath() { 
     return path; 
    } 

    public void setPath(String path) { 
     this.path = path; 
    } 

}

我這是怎麼想deserialise它：

TypeReference<HashMap<String, List<AccessLevelDetails>>> typeRef = new TypeReference<HashMap<String, List<AccessLevelDetails>>>() { 
     }; 
     this.accessLevelConfigWrapper = new AccessLevelConfigWrapper(); 
     this.accessLevelConfigWrapper.setListOfRoles(
       (new ObjectMapper().readValue(JSONObject.valueToString(this.parentConfigWithPaths), typeRef)));

而且我得到以下例外：

com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "accesslevel" (class com.gatcbiotech.blueberry.gateway.authorization.model.AccessLevelDetails), not marked as ignorable (2 known properties: "accessLevel", "path"]) 
at [Source: {"CN=it-soft,CN=Groups,DC=intern,DC=gatc-biotech,DC=com":[{"path":"/1_order/1_general/customer.comp.json","accesslevel":"ENABLED"},{"path":"/1_order/1_general/CustomerComponent.json","accesslevel":"DISABLED"},{"path":"/2_help/DummyComponent.json","accesslevel":"ENABLED"}]}; line: 1, column: 122] (through reference chain: java.util.HashMap["CN=it-soft,CN=Groups,DC=intern,DC=gatc-biotech,DC=com"]->java.util.ArrayList[0]->com.gatcbiotech.blueberry.gateway.authorization.model.AccessLevelDetails["accesslevel"]) 
    at com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException.from(UnrecognizedPropertyException.java:51) 
    at com.fasterxml.jackson.databind.DeserializationContext.reportUnknownProperty(DeserializationContext.java:744) 
    at com.fasterxml.jackson.databind.deser.std.StdDeserializer.handleUnknownProperty(StdDeserializer.java:915) 
    at ....

來源

2016-11-04 Roxy

你有一個錯字（'accessLevel' vs'accesslevel'）。 JSON具有'accesslevel'，但在註釋中設置'accessLevel'。 – uthark

@uthark：我不相信，我花了1個小時找出解決方案。謝謝你 – Roxy

如果它有效，那麼將我的答案標記爲解決方案。 – uthark

修復一個錯字（accessLevel VS accesslevel）。 JSON有accesslevel，但在註釋中設置accessLevel。它們應該匹配，因爲傑克遜在解析JSON密鑰時區分大小寫。

來源

2016-11-04 13:25:57 uthark

傑克遜Deserialising：com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException：

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