Kotlin 使用 GSON 将 json 数组转换为模型列表

Question

我无法将 JSON 数组转换为 GroupModel 数组。下面是我使用的 JSON:

[{
  "description":"My expense to others",
  "items":["aaa","bbb"],
  "name":"My Expense"
 },
 {
  "description":"My expense to others","
  items":["aaa","bbb"],
  "name":"My Expense"
 }]

GroupModel 类是:

class GroupModel {
    var name: String? = null
    var description: String? = null
    var items: MutableList<String>? = null

    constructor(name: String, description: String, items: MutableList<String>) {
        this.name = name
        this.description = description
        this.items = items
    }
}

并尝试以下代码会导致 Exception:

com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was BEGIN_ARRAY at line 1 column 2 path $

代码:

var model = gson.fromJson<Array<GroupModel>>(inputString, GroupModel::class.java)

Answer 1

[{
  "description":"My expense to others",
  "items":["aaa","bbb"],
  "name":"My Expense"
 },
 {
  "description":"My expense to others","
  items":["aaa","bbb"],
  "name":"My Expense"
 }]

Kotlin 代码

val gson = GsonBuilder().create()
val Model= gson.fromJson(body,Array<GroupModel>::class.java).toList()

Gradle

implementation 'com.google.code.gson:gson:2.8.5'