如何使用Gson反序列化JSON数组

时间:2012-04-24 06:03:12

标签: java json gson

我想使用Gson反序列化JSON数组。我试图这样做,但我不能这样做。

JSON数组:

[
    {"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脚本中获取JSON数组:

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

1 个答案:

答案 0 :(得分:44)

要反序列化JSONArray,您需要使用TypeToken。您可以从GSON user guide了解更多相关信息。示例代码:

@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

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