Gson日期类型异常：我如何解决异常？

Question

我使用GSON到JSON转换成Java类... firstLogin的类型是java.util.Date

public static void main(String[] args) { 

    String lineString="{\"email\":\"sadas\",\"faith\":121,\"qq\":211,\"account\":2412,\"userName\":\"asda\",\"firstLogin\":1321362590000,\"uid\":1}"; 
    Gson gson=new Gson(); 
User user=gson.fromJson(lineString, User.class); 
    System.out.println(user.getFirstLogin()); 
} 

例外：

Exception in thread "main" com.google.gson.JsonSyntaxException: 1321362590000 
    at com.google.gson.internal.bind.DateTypeAdapter.deserializeToDate(DateTypeAdapter.java:78) 
    at com.google.gson.internal.bind.DateTypeAdapter.read(DateTypeAdapter.java:63) 
    at com.google.gson.internal.bind.DateTypeAdapter.read(DateTypeAdapter.java:38) 
    at com.google.gson.internal.bind.TypeAdapters$19$1.read(TypeAdapters.java:462) 
    at com.google.gson.internal.bind.TypeAdapters$19$1.read(TypeAdapters.java:466) 
    at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:86) 
    at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:170) 
    at com.google.gson.Gson.fromJson(Gson.java:720) 
    at com.google.gson.Gson.fromJson(Gson.java:686) 
    at com.google.gson.Gson.fromJson(Gson.java:636) 
    at com.google.gson.Gson.fromJson(Gson.java:608) 
    at gsontest.GsonTest.main(GsonTest.java:22) 
Caused by: java.text.ParseException: Unparseable date: "1321362590000" 
    at java.text.DateFormat.parse(DateFormat.java:357) 
    at com.google.gson.internal.bind.DateTypeAdapter.deserializeToDate(DateTypeAdapter.java:76) 
    ... 11 more 
Java Result: 1 

如何解决这个问题？谢谢

Answer 1

firstLogin在你的JSON长的类型，所以把它从一个JSON可变long使用Date(long milliseconds)构造函数创建一个新的Date。