处理具有相同名称的多种类型的JSON响应

问题描述

JSON响应是:

{
    "success": false,
    "errorMessages": [
        "You have to select a maximum load of <span style='color:red;'>0</span> Credit/Course but you have selected <span style='color:red;'>3</span> Credit/Course --- [R060]",
        "You can register courses as a full study with a load limit between <span style='color:red;'>12</span> and <span style='color:red;'>18</span> Credit/Course, but you have selected <span style='color:red;'>9</span> Credit/Course --- [R062]"
    ],
    "isConflict": 0
}

，但是当isConflict == 1时，响应为:

{
    "ignoreConflictValue": "W",
    "isConflict": 1,
    "conflict": [
        {
            "EXAM_DATE": "01/01/2019",
            "START_TIME": "08:00 AM",
            "END_TIME": "09:30 AM",
            "COURSE_NAME_SL": "مقاومة مواد,تقنيات الحفر البحري",
            "COURSE_NAME_PL": "STRENGTH OF MATERIALS,OFFSHORE TECHNOLOGY",
            "COURSES_COUNT": "2",
            "ACTIVE": "A"
        }
    ],
    "success": false
}

此API的逻辑是:

• isConflict == 1成功属性是类型为Integer且值为1和0的
.
• 否则，成功属性是Boolean类型，其值分别为true和false

• when isConflict == 1 the success property is type of Integer with values 1 and 0.
• Otherwise the success property is type of Boolean with values true and false

我的问题是如何针对这种情况定义POJO类.

My question is how to define the POJO class for this situation.

我试图用@Nullable来使两个具有相同名称的字段，但是Gson抱怨POJO具有重复的字段.

I tried to make two fields with the same name with @Nullable for both but Gson complains that the POJO has duplicate fields.

推荐答案

在Kotlin中，您可以执行以下操作:

In Kotlin you can do the following:

使用如下通用名称定义"ApiResponse"类:

Define "ApiResponse" class with generics like below:

class ApiResponse(@SerializedName("success") val success : Any,
                  @SerializedName("errorMessages") val errorMessages : Array<Any>,
                  @SerializedName("isConflict")
                  val isConflict : Integer)

然后，在您的活动中，使用Gson将响应转换为

Then, in your activity, use Gson to convert the response with

 var responseOne = Gson().fromJson(textConflictOneResponse, ApiResponse::class.java)
        var responseZero = Gson().fromJson(textConflictZeroResponse, ApiResponse::class.java)

然后您可以通过以下方法检查响应的类型:

Then you can check the type of the response by doing:

if (responseOne.success is Boolean){
            Log.v(TAG,"Boolean")
        } else{
            Log.v(TAG,"not boolean")
        }

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