GSON帮助的解析阵列 - 作品，未经数组，但不会有数组 [英] Gson help with parse array - works without array but won't with array

问题描述

有人可以帮我GSON解析器。当我从JSON删除变化，结果它工作正常，但改变它抛出JsonParseException-解析失败。

Can somebody help me with Gson parser. When I remove change from JSON and Result it works fine but with change it throws JsonParseException-Parse failed.

Result[] response = gson.fromJson(fileData.toString(), Result[].class);

我上课像这样

public class Result {
    public String start_time;
    public String end_time;
    public change[] change;
}

和

public class change {
    public String id;
    public String name;
}

和JSON字符串如

[
  {
        "start_time": "8:00",
        "end_time": "10:00",
        "change": [
            {
                "id": "1",
                "name": "Sam"
            },
            {
                "id": "2",
                "name": "John"
            }
        ]
    },
    {
        "start_time": "9:00",
        "end_time": "15:00",
        "change": [
            {
                "id": "1",
                "name": "Sam"
            },
            {
                "id": "2",
                "name": "John"
            }
        ]
    }
]

有人可以告诉我，我做错了什么？任何想法，为什么它不会与阵列工作？

Can somebody tell me what I did wrong ? Any idea why it won't work with array ?

推荐答案

正如有人建议，你需要使用一个列表，而不是。 GSON有pretty良好的文档使用parametized类型的解析器，你可以阅读更多关于它的here 。您code最终会看起来像这样：

As has been suggested, you need to use a list instead. Gson has pretty good documentation for using parametized types with the parser, you can read more about it here. Your code will end up looking like this:

Type listType = new TypeToken<List<Result>>() {}.getType();
List<Result> results = gson.fromJson(reader, listType);
for (Result r : results) {
    System.out.println(r);
}

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