解析包含null的原始json数组
问题描述：
Json数组：
{"userName":null," msgArr":[null],"numrow":0} //String result
Gson：
new Gson().fromJson(result, MyClass.class);
MyClass:
public String userName;
public int[] msgArr;
...
错误stack：
at java.lang.IllegalArgumentException: Primitive array can't take null values.
at java.lang.reflect.Array.set(Array.java:406)
at com.google.gson.internal.bind.ArrayTypeAdapter.read(ArrayTypeAdapter.java:78)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:93)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:172)
at com.google.gson.Gson.fromJson(Gson.java:803)
at com.google.gson.Gson.fromJson(Gson.java:768)
at com.google.gson.Gson.fromJson(Gson.java:717)
at com.google.gson.Gson.fromJson(Gson.java:689)
at com.test.dao.RequestBase.onPostExecute(RequestBase.java:79)
如果不能修改json字符串 "msgArr=[null]"，怎么解除这个异常？
答
json里得msgArr的值去掉{}，直接写成null试试
答
GSON代码调整为下面的试试：
new GsonBuilder()
.seralizeNulls()//处理Null
.create()
.fromJson(result, MyClass.class);