JSONPatch WCF REST API 获取无效负载错误

Posted 2023-03-15

【中文标题】JSONPatch WCF REST API 获取无效负载错误

【英文标题】：JSONPatch WCF REST API getting invalid payload error

【发布时间】：2018-03-14 17:32:48

【问题描述】：

我正在尝试在我的 WCF REST API（ASP.NET v4.5）中使用 JSONPatch（KevinDockx 版本）。我的运营合同如下：-

[OperationContract]
[WebInvoke(UriTemplate = "/raceId/participants", Method = "PATCH")]
void UpdateRace(string id, JsonPatchDocument<ParticipantContract[]> participantsContract);

并实现如下：-

public void UpdateRace(string id, JsonPatchDocument<ParticipantContract[]> participantsContract)

    //Someoperation

我的数据类似于下面的格式，我想在参与者数组上执行添加、更新、删除、移动和交换操作。

    "raceId" : 1
    "participants": [
        
            "id": "abc",
            "car": "Mercedes",
            "model": "F1 W08 EQ Power",
            "teamname": "Mercedes-AMG Petronas Motorsport",
            "driver": 
                "id": "111",
                "firstname": "Lewis",
                "lastname": "Hamilton",
                "age": "29"
            ,
            "codriver": 
                "id": "222",
                "firstname": "Valtteri",
                "lastname": "Bottas",
                "age": "32"
            
        ,
        
            "id": "def",
            "car": "Ferrari",
            "model": "SF70H",
            "teamname": "Scuderia Ferrari",
            "borrower": 
                "id": "333",
                "firstname": "Sebastian",
                "lastname": "Vettel",
                "age": "30"
            ,
            "coborrower": 
                "id": "444",
                "firstname": "Kimi",
                "lastname": "Räikkönen",
                "age": "37"
            
        
    ]

在 JSON 反序列化时出现以下错误：-

    "summary": "Bad Request",
    "details": "Cannot deserialize the current JSON array (e.g. [1,2,3]) into type 'ParticipantContract' because the type requires a JSON object (e.g. \"name\":\"value\") to deserialize correctly.\r\nTo fix this error either change the JSON to a JSON object (e.g. \"name\":\"value\") or change the deserialized type to an array or a type that implements a collection interface (e.g. ICollection, IList) like List<T> that can be deserialized from a JSON array. JsonArrayAttribute can also be added to the type to force it to deserialize from a JSON array.\r\nPath '', line 1, position 1."

你能帮我解决我在这方面所缺少的吗？还有什么需要做的吗？

【参考方案1】：

我可以看到您的 JSON 对象无效

    
        "raceId" : 1  // you missed comma here
        "participants": [
         

只需检查 JSON 对象中的任何其他错误并传递有效的 JSON 即可修复错误。