I'm trying to decompress a json object in Java that was initially compressed in PHP. Here's how it gets compressed into PHP:
function zip_json_encode(&$arr) {
$uncompressed = json_encode($arr);
return pack('L', strlen($uncompressed)).gzcompress($uncompressed);
}
and decoded (again in PHP):
function unzip_json_decode(&$data) {
$uncompressed = @gzuncompress(substr($data,4));
return json_decode($uncompressed, $array_instead_of_object);
}
That gets put into MySQL and now it must be pulled out of the db by Java. We pull it out from the ResultSet like this:
String field = rs.getString("field");
I then pass that string to a method to decompress it. This is where it falls apart.
private String decompressHistory(String historyString) throws SQLException {
StringBuffer buffer = new StringBuffer();
try {
byte[] historyBytes = historyString.substring(4).getBytes();
ByteArrayInputStream bin = new ByteArrayInputStream(historyBytes);
InflaterInputStream in = new InflaterInputStream(bin, new Inflater(true));
int len;
byte[] buf = new byte[1024];
while ((len = in.read(buf)) != -1) {
// buf should be decoded, right?
}
} catch (IOException e) {
e.getStackTrace();
}
return buffer.toString();
}
Not quite sure what's going wrong here, but any pointers would be appreciated!
