製作GSON＆Realm玩不錯

Question

我正在嘗試使用Realm + GSON。 如果他們能夠很好地合作，那將會是天堂裏的一場比賽。

然而，當我跟我的擴展模型對象「延伸RealmObject」我得到這個：

10-08 17:00:19.578 12492-12492/appwise.be.gsontestproject E/AndroidRuntime﹕ FATAL EXCEPTION: main 
    Process: appwise.be.gsontestproject, PID: 12492 
    java.lang.StackOverflowError 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:372) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:376) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:381) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:376) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:381) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:376) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:381) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:376) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:381) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:376) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:381) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:376) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:381) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:376) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:381) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:376) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:381) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:376) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:381) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:376) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:381) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:376) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:381) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:376) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:381) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:376) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:381) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:376) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:381) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:376) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:381) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:376) 
      at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:356) 
      at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:128) 
      at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:75) 
      at com.google.gson.Gson.getAdapter(Gson.java:358) 
      at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getFieldAdapter(ReflectiveTypeAdapterFactory.java:109) 
      at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.access$100(ReflectiveTypeAdapterFactory.java:46) 
      at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.<init>(ReflectiveTypeAdapterFactory.java:84) 
      at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.createBoundField(ReflectiveTypeAdapterFactory.java:83) 
      at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:129) 
      at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:75) 
      at com.google.gson.Gson.getAdapter(Gson.java:358) 
      at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getFieldAdapter(ReflectiveTypeAdapterFactory.java:109) 
      at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.access$100(ReflectiveTypeAdapterFactory.java:46) 
      at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.<init>(ReflectiveTypeAdapterFactory.java:84) 
      at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.createBoundField(ReflectiveTypeAdapterFactory.java:83) 
      at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:129) 
      at com.google.gson.internal.bin 

任何修復可用？ :-)

Answer 1

U可以做到這一點是這樣的：

Gson gson = new GsonBuilder() 
    .setExclusionStrategies(new ExclusionStrategy() { 
     @Override 
     public boolean shouldSkipField(FieldAttributes f) { 
      return f.getDeclaringClass().equals(RealmObject.class); 
     } 

     @Override 
     public boolean shouldSkipClass(Class<?> clazz) { 
      return false; 
     } 
    }) 
    .create(); 

String json = "{ name : 'John', email : 'john@corporation.com' }"; User user = gson.fromJson(json, User.class);

http://realm.io/docs/java/0.77.0/#gson