java - Can not convert Base64 String and unGzip it properly -

i have base64 string. trying decode it, decompress it.

string texttodecode = "h4siaaaaaaaaaaegan//0jtqtdgc0ldqu9c40lfqunga0l7qstcw0l3qvdgl0lmrcuyiiaaaaa==\n"; byte[] data = base64.decode(texttodecode, base64.default); string result = gziputil.decompress(data); 

code using decompression:

public static string decompress(byte[] compressed) throws ioexception {     final int buffer_size = 32;     bytearrayinputstream = new bytearrayinputstream(compressed);     gzipinputstream gis = new gzipinputstream(is, buffer_size);     stringbuilder string = new stringbuilder();     byte[] data = new byte[buffer_size];     int bytesread;     while ((bytesread = gis.read(data)) != -1) {         string.append(new string(data, 0, bytesread));     }     gis.close();     is.close();     return string.tostring(); } 

i should string:

Детализированный 

insteam of it, getting string question mark symbols:

Детализирован��ый 

what mistake? , how solve it?

one problem when converting bytes string (internally unicode) encoding not given. , multi-byte encoding utf-8 1 cannot take fixed number of bytes (like 32) , @ end have valid sequence.

you experienced loss of evidently half sequence. hence encoding utf-8.

final int buffer_size = 32; bytearrayinputstream = new bytearrayinputstream(compressed); gzipinputstream gis = new gzipinputstream(is, buffer_size); bytearrayoutputstream baos = new bytearrayoutputstream(); byte[] data = new byte[buffer_size]; int bytesread; while ((bytesread = gis.read(data)) != -1) {     baos.write(data, 0, bytesread); } gis.close(); return baos.tostring("utf-8"); // or "windows-1251" ... 

the above away buffer boundary problems, , specifies encoding, same code runs on different computers.

and mind:

• new string(bytes, encoding)
• string.getbytes(encoding)