web压缩gzip响应

String data = "ggrgrgw4gergergregerge";
byte b[] = data.getBytes();
String gzipValue = request.getHeader("Accept-Encoding"); //是否支持gzip压缩
if(gzipValue.contains("gzip")){
ByteArrayOutputStream baos = new ByteArrayOutputStream();//带缓存的字节输出流
GZIPOutputStream gout = new GZIPOutputStream(baos);
gout.write(b);
b = baos.toByteArray();
response.setHeader("Content-Encoding", "gzip");
reponse.setContentLength(b.length);
}
response.getOutputStream.write(b);