Android Studio - Java: ACTION_OPEN_DOCUMENT导致无效的Uri

public class MainActivity extends AppCompatActivity {

    private static final int REQUEST_CODE = 123;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        findViewById(R.id.btn_open_document).setOnClickListener(v -> openDocument());
    }

    private void openDocument() {
        Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
        intent.addCategory(Intent.CATEGORY_OPENABLE);
        intent.setType("*/*");
        startActivityForResult(intent, REQUEST_CODE);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == REQUEST_CODE && resultCode == Activity.RESULT_OK && data != null) {
            Uri uri = data.getData();
            if (uri != null) {
                checkUri(uri);
            }
        }
    }

    private void checkUri(Uri uri) {
        ContentResolver contentResolver = getContentResolver();
        try {
            InputStream inputStream = contentResolver.openInputStream(uri);
            if (inputStream != null) {
                // Uri 有效，可以进行文件操作
                inputStream.close();
            } else {
                // Uri 无效
                Toast.makeText(this, "Invalid Uri", Toast.LENGTH_SHORT).show();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}