我需要创建这种格式的json:
{
"array": [
1482922777223,
0.014221191,
0.014221191,
0.014221191
]
}
Data.class
public class Data {
@SerializedName("array")
@Expose
private List<Float> array = null;
}
将对象转换为JSON字符串我使用gson库。
List<Float> list = new ArrayList<>();
list.add((float)1482922777223);
list.add(0.014221191);
list.add(0.014221191);
list.add(0.014221191);
Data data = new Data(list);
Gson gson = new Gson();
String json = gson.toJson(data);
结果字符串:
{
"array": [
1.4829219E12, <--- HOW TO GET HERE 1482922777223?
0.014221191,
0.014221191,
0.014221191
]
}
请帮忙!
答案 0 :(得分:0)
您需要为TypeAdapter
值注册Float
。
E.g:
GsonBuilder gsonBuilder = new GsonBuilder();
gsonBuilder.registerTypeAdapter(Float.class, new JsonSerializer<Float>() {
@Override
public JsonElement serialize(final Float src, final Type typeOfSrc, final JsonSerializationContext context) {
BigDecimal value = BigDecimal.valueOf(src);
return new JsonPrimitive(value);
}
});
Gson gson = gsonBuilder.create();
String json = gson.toJson(data);
输出:
{
"array": [
1482922777223,
0.014221191,
0.014221191,
0.014221191
]
}