java - 是否可以捕获 java.lang.reflect.GenericSignatureFormatError？

Question

在 try-catch block 中调用 com.google.gson.Gson.fromJson()，但它仍然会导致以下应用程序崩溃，尽管这种情况很少发生？

java.lang.reflect.GenericSignatureFormatError: 
  at libcore.reflect.GenericSignatureParser.parseFieldTypeSignature (GenericSignatureParser.java:297)
  at libcore.reflect.GenericSignatureParser.parseTypeArgument (GenericSignatureParser.java:374)
  at libcore.reflect.GenericSignatureParser.parseOptTypeArguments (GenericSignatureParser.java:344)
  at libcore.reflect.GenericSignatureParser.parseClassTypeSignature (GenericSignatureParser.java:317)
  at libcore.reflect.GenericSignatureParser.parseFieldTypeSignature (GenericSignatureParser.java:289)
  at libcore.reflect.GenericSignatureParser.parseForField (GenericSignatureParser.java:218)
  at java.lang.reflect.Field.getGenericType (Field.java:177)
  at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields (ReflectiveTypeAdapterFactory.java:160)
  at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create (ReflectiveTypeAdapterFactory.java:102)
  at com.google.gson.Gson.getAdapter (Gson.java:457)
  at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.createBoundField (ReflectiveTypeAdapterFactory.java:117)
  at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields (ReflectiveTypeAdapterFactory.java:166)
  at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create (ReflectiveTypeAdapterFactory.java:102)
  at com.google.gson.Gson.getAdapter (Gson.java:457)
  at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.createBoundField (ReflectiveTypeAdapterFactory.java:117)
  at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields (ReflectiveTypeAdapterFactory.java:166)
  at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create (ReflectiveTypeAdapterFactory.java:102)
  at com.google.gson.Gson.getAdapter (Gson.java:457)
  at com.google.gson.Gson.fromJson (Gson.java:921)
  at com.google.gson.Gson.fromJson (Gson.java:860)

有没有办法捕获 java.lang.reflect.GenericSignatureFormatError 以防止应用程序崩溃？

编辑:代码如下:

try{
    ...
    foo = _gson.fromJson(bufferedReader, Foo.class); 
    ...
}catch(Exception ex) {
    ...
}

也许我关于 catch(Exception ex) 捕获所有内容的假设是错误的。

Answer 1

洪，您可以按照以下方式处理。

try{
    ...
    foo = _gson.fromJson(bufferedReader, Foo.class); 
    ...
}catch(Exception ex) {
    ...
}
catch(Error err) {
    ...
}

永远记住，任何 Error 类型的错误(例如 NoClassDefFoundError、NoSuchMethodError)永远不会在 catch(Exception ex) block 中捕获。然而，错误是无法挽回的。您可以在 Android 应用程序中显示一些弹出消息。