如何将图像字节 [] 转换为字符串，然后在 Andorid 中再次转换为 []byte

如何解决如何将图像字节 [] 转换为字符串，然后在 Andorid 中再次转换为 []byte

我从图库中获得了一张图片。名称：文件路径

 if (requestCode == 0 && resultCode == RESULT_OK) {

            filePath = data.getData();

          
            Bitmap ImgBitmap = null;

            
            ImgBitmap = resize(getApplicationContext(),filePath,300);

            Byte_image = BitmapToByteArray(ImgBitmap);


            try {
                // Uri파일로 bitmap resize
                //resize(getApplicationContext(),1000);

                // 이미지 암호화
                EncryptImg = aesCoderAndriod.encrypt(seed,Byte_image);

                String EncryptString = new String(EncryptImg,"UTF-8");

                Log.e("Encrypt",EncryptString);
                FirebaseUser currentUser = FirebaseAuth.getInstance().getCurrentUser();

                DatabaseReference databaseReference = FirebaseDatabase.getInstance().getReference("users")
                            .child(currentUser.getUid()).child("Object");
                String key = databaseReference.push().getKey();
                    HashMap<Object,String> object = new HashMap<Object,String>();

                    object.put("title","image_title");
                    object.put("photo",EncryptString);

                    DatabaseReference keyRef = databaseReference.child(key);
                    keyRef.setValue(object);

filePath -> Bitmap -> byte[] -> String 并保存在 firebase realtimeDB 中。 然后，我将 firebaseDB 值称为“照片”。我在 En1 中得到“照片”值。 En1(String) -> En2([]byte) -> Dn1(decrypted) -> Dn2(Bitmap)-> Dn3(Uri)

DatabaseReference databaseReference = FirebaseDatabase.getInstance().getReference("users")
                .child(currentUser.getUid()).child("Object");
        
        databaseReference.addValueEventListener(new ValueEventListener() {
                @Override
                public void onDataChange(@NonNull DataSnapshot dataSnapshot) {


                    for (DataSnapshot snapshot : dataSnapshot.getChildren()) {

                        ItemObject itemObject = snapshot.getValue(ItemObject.class);

                        String title = itemObject.getTitle();
                        String En1 = itemObject.getPhoto();

                        Log.e("En1",En1);

                        byte[] En2 = En1.getBytes(UTF_8);


                        Log.e("En2",En2.toString());
                        try {
                            byte[] Dn1 = aesCoderAndriod.decrypt(seed,En2);
                            Bitmap Dn2 = byteArrayToBitmap(Dn1);
                            Uri Dn3 = getImageUri(getApplicationContext(),Dn2);
                           
                            Log.e("Dn3",String.valueOf(Dn3));
                            
                            itemObject = new ItemObject(title,Dn3.toString());
                            mItem.add(itemObject);
                        } catch (Exception e) {
                            e.printStackTrace();
                        }

                        //   itemObject.setPhoto(snapshot.child("Photo").getValue().toString());
                    }
                    // myAdapter= new MyAdapter(getApplicationContext(),mItem);
                    // mRecyclerView.setAdapter(myAdapter);
                    myAdapter.notifyDataSetChanged();
                }

                @Override
                public void onCancelled(@NonNull DatabaseError error) {

                }
            });

但是，get []byte 有问题。

从 DB(En1) 得到的值和再转换为 byte[] 的值(En2) 是不同的。 有什么问题？