记录：activeandroid数据库工具注解字段，在android6.0里Gson解析确出错了

来源：互联网发布：淘宝主播底薪一般多少编辑：程序博客网时间：2024/06/07 06:09

在使用activeandroid数据库工具的时候遇到在android6.0以下gson解析是正确的（注解实体类），但是拿到android6.0的机子上就报错了。

一开始在真机（荣耀6）上报出的错误的是乱七八糟的；用模拟器才看清楚是：

E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.xxxx.xxxxxxxxxxxxxxx, PID: 4716
java.lang.SecurityException: Can't make field constructor accessible
at java.lang.reflect.Constructor.setAccessible(Constructor.java:334)
at com.google.gson.internal.ConstructorConstructor.newDefaultConstructor(ConstructorConstructor.java:101)
at com.google.gson.internal.ConstructorConstructor.get(ConstructorConstructor.java:83)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:95)
at com.google.gson.Gson.getAdapter(Gson.java:416)
at com.google.gson.internal.bind.MapTypeAdapterFactory.getKeyAdapter(MapTypeAdapterFactory.java:142)
at com.google.gson.internal.bind.MapTypeAdapterFactory.create(MapTypeAdapterFactory.java:125)
at com.google.gson.Gson.getAdapter(Gson.java:416)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getFieldAdapter(ReflectiveTypeAdapterFactory.java:135)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.<init>(ReflectiveTypeAdapterFactory.java:105)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.createBoundField(ReflectiveTypeAdapterFactory.java:104)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:160)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:96)
at com.google.gson.Gson.getAdapter(Gson.java:416)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getFieldAdapter(ReflectiveTypeAdapterFactory.java:135)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.<init>(ReflectiveTypeAdapterFactory.java:105)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.createBoundField(ReflectiveTypeAdapterFactory.java:104)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:160)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:96)
at com.google.gson.Gson.getAdapter(Gson.java:416)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory.create(CollectionTypeAdapterFactory.java:53)
at com.google.gson.Gson.getAdapter(Gson.java:416)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getFieldAdapter(ReflectiveTypeAdapterFactory.java:135)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.<init>(ReflectiveTypeAdapterFactory.java:105)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.createBoundField(ReflectiveTypeAdapterFactory.java:104)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:160)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:96)
at com.google.gson.Gson.getAdapter(Gson.java:416)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getFieldAdapter(ReflectiveTypeAdapterFactory.java:135)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.<init>(ReflectiveTypeAdapterFactory.java:105)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.createBoundField(ReflectiveTypeAdapterFactory.java:104)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:160)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:96)
at com.google.gson.Gson.getAdapter(Gson.java:416)
at com.google.gson.Gson.fromJson(Gson.java:878)
at com.google.gson.Gson.fromJson(Gson.java:844)
at com.google.gson.Gson.fromJson(Gson.java:793)
at com.google.gson.Gson.fromJson(Gson.java:765)
at com.xxxx.xxxxxxxxxxxxxxx.ui.xxxxxxx.onExecuteSuccesss(xxxxx.java:142)
at com.xxxx.xxxxxxxxxxxxxxx.base.xxxxxxx$1.handleMessage(xxxxxx.java:58)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)

在github的Google/gson看到有人用的和我一样，给出的解决方法是：是

JakeWharton 的isssues : Android M: Cannot make field constructor accessible

GsonBuilder builder = new GsonBuilder();builder.excludeFieldsWithModifiers(Modifier.FINAL, Modifier.TRANSIENT, Modifier.STATIC);Gson gson = builder.create();

使用这个还是会出错，最后看到zhenglingxiao 层主用ExclusionStrategy 跳过了Field和Method,之后自己去了解关于ExclusionStrategy ，成功完成功能，只是现在还没有发现问题！要慢慢测试一下！

这是ExclusionStrategy的一个例子

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