1 import java.io.IOException;
 2 
 3 import okhttp3.Interceptor;
 4 import okhttp3.MediaType;
 5 import okhttp3.Request;
 6 import okhttp3.RequestBody;
 7 import okhttp3.Response;
 8 import okio.BufferedSink;
 9 import okio.GzipSink;
10 import okio.Okio;
11 
12 public class GzipRequestInterceptor implements Interceptor {
13     @Override
14     public Response intercept(Chain chain) throws IOException {
15         Request originalRequest = chain.request();
16         if (originalRequest.body() == null || originalRequest.header("Content-Encoding") != null) {
17             return chain.proceed(originalRequest);
18         }
19 
20         Request compressedRequest = originalRequest.newBuilder()
21                 .header("Content-Encoding", "gzip")
22                 .method(originalRequest.method(), gzip(originalRequest.body()))
23                 .build();
24         return chain.proceed(compressedRequest);
25     }
26 
27     private RequestBody gzip(final RequestBody body) {
28         return new RequestBody() {
29             @Override
30             public MediaType contentType() {
31                 return body.contentType();
32             }
33 
34             @Override
35             public long contentLength() {
36                 return -1; // 无法提前知道压缩后的数据大小
37             }
38 
39             @Override
40             public void writeTo(BufferedSink sink) throws IOException {
41                 BufferedSink gzipSink = Okio.buffer(new GzipSink(sink));
42                 body.writeTo(gzipSink);
43                 gzipSink.close();
44             }
45         };
46     }
47 }

OkHttpClient okHttpClient = new OkHttpClient.Builder() 
    .addInterceptor(new GzipRequestInterceptor())//开启Gzip压缩
    ...
    .build();