客户端：
GetMethod method = new GetMethod(url);//生成一个get方法实例
method.setQueryString(queryString);//设置查询字符串
method.addRequestHeader("Accept-Encoding", "gzip");//设置接受响应消息为gzip
HttpClient client = new HttpClient();//生成执行get方法的客户端实例
client.executeMethod(method);//执行get方法
InputStream in = method.getResponseBodyAsStream();//获取响应消息体
Header contentEncoding = method.getResponseHeader("Content-Encoding");//获取消息头Content-Encoding判断数据流是否gzip压缩过
if (contentEncoding != null && contentEncoding.getValue().equalsIgnoreCase("gzip")) {
GZIPInputStream gzipIn = new GZIPInputStream(in);
int len = Integer.parseInt(method.getResponseHeader("Content-Length").getValue());
byte[] b = new byte[len];
gzipIn.read(b);
String json = new String(b);
System.out.println(json);
}
服务端：
byte[] result = data.getBytes("UTF-8");
if(response.getHeader("Accept-Encoding").equalsIgnoreCase("gzip"))
{
// System.out.println("Before compression, the data size is ："+ result.length);
// Using gzip compress the data
ByteArrayOutputStream out = new ByteArrayOutputStream();
GZIPOutputStream gout = new GZIPOutputStream(out);
gout.write(json.getBytes("UTF-8"));
gout.close();
result = out.toByteArray();
// System.out.println("After compression, the data size is "+gzipResult.length);
this.getResp().setHeader("Content-Encoding","gzip");
this.getResp().setHeader("Content-Length", result.length+"");
}
response.getOutputStream().write(result);
