如何使用Gson反序列化JSON数组 [英] How to deserialize a JSON array using Gson

问题描述

我想用Gson反序列化一个JSON数组。我试图这样做，但我做不到。

I want to deserialize a JSON array using Gson. I tried to do that but I couldn't do it.

JSON数组：

The JSON array:

[
    {"ID":1,"Title":"Lion","Description":"bla bla","ImageURL":"http:\/\/localhost\/lion.jpg"},
    {"ID":1,"Title":"Tiger","Description":"bla bla","ImageURL":"http:\/\/localhost\/tiger.jpg"}
]

我从PHP获取JSON数组脚本：

I get the JSON array from a PHP script:

$array = array (
    array ( 'ID' => 1 , 'Title' => 'Lion' , 'Description' => 'bla bla' , 'ImageURL' => 'http:\/\/localhost\/lion.jpg' ) ,
    array ( 'ID' => 2 , 'Title' => 'Tiger' , 'Description' => 'bla bla' , 'ImageURL' => 'http:\/\/localhost\/tiger.jpg' ) ,
);
echo json_encode ($array);

推荐答案

要反序列化JSONArray，您需要使用TypeToken。您可以从 GSON用户指南了解更多信息。示例代码：

To deserialize a JSONArray you need to use TypeToken. You can read more about it from GSON user guide. Example code:

@Test
public void JSON() {
    Gson gson = new Gson();
    Type listType = new TypeToken<List<MyObject>>(){}.getType();
    // In this test code i just shove the JSON here as string.
    List<Asd> asd = gson.fromJson("[{'name':\"test1\"}, {'name':\"test2\"}]", listType);
}

如果您有JSONArray，那么您可以使用

If you have a JSONArray then you can use

...
JSONArray jsonArray = ...
gson.fromJson(jsonArray.toString(), listType);
...

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