okhttp拦截器

package test.bwie.com.myapplication.Modle.Http;import android.os.Build;import android.util.Log;import java.io.IOException;import okhttp3.Interceptor;import okhttp3.Request;import okhttp3.Response;/** * Created by hzwangchenyan on 2017/3/30. */public class HttpInterceptor implements Interceptor {    private static final String UA = "User-Agent";    @Override    public Response intercept(Chain chain) throws IOException {        Request request = chain.request()                .newBuilder()                .addHeader(UA, makeUA())                .build();        return chain.proceed(request);    }    private String makeUA() {        String s = Build.BRAND + "/" + Build.MODEL + "/" + Build.VERSION.RELEASE;        Log.e("myMessage", "makeUA: "+s);        return Build.BRAND + "/" + Build.MODEL + "/" + Build.VERSION.RELEASE;    }}