首先向build.gradle添加依赖项:

实现“com.squareup.okhttp3:日志记录拦截器:3.12.1”

在使用Kotlin时，你可以像这样添加日志拦截器:

companion object {
    val okHttpClient = OkHttpClient().newBuilder()
            .addInterceptor(HttpLoggingInterceptor().apply {
                level = HttpLoggingInterceptor.Level.BODY
            })
            .build()


    fun getRetrofitInstance(): Retrofit {
        val retrofit = Retrofit.Builder()
                .client(okHttpClient)
                .baseUrl(ScanNShopConstants.BASE_URL)
                .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
                .addConverterFactory(GsonConverterFactory.create())
                .build()

        return retrofit
    }
}

我不知道setLogLevel()是否会在最终2.0版本的Retrofit中返回，但现在你可以使用一个拦截器来记录日志。

一个很好的例子可以在OkHttp wiki上找到:https://github.com/square/okhttp/wiki/Interceptors

OkHttpClient client = new OkHttpClient();
client.interceptors().add(new LoggingInterceptor());

Retrofit retrofit = new Retrofit.Builder()
        .baseUrl("http://www.yourjsonapi.com")
        .addConverterFactory(GsonConverterFactory.create())
        .client(client)
        .build();

更新日志

Retrofit的拦截器是一个很好的功能，它允许你处理http请求。 它们有两种类型:应用程序拦截器和网络拦截器。

如果您需要记录请求/响应，我建议使用Charles Web调试代理应用程序。输出与Stetho非常相似，但它是更强大的工具，不需要将其作为依赖项添加到应用程序中

[Charles代理更改响应]

下面是一个使用HttpLoggingInterceptor从日志中过滤任何请求/响应参数的简单方法:

// Request patterns to filter
private static final String[] REQUEST_PATTERNS = {
    "Content-Type",
};
// Response patterns to filter
private static final String[] RESPONSE_PATTERNS = {"Server", "server", "X-Powered-By", "Set-Cookie", "Expires", "Cache-Control", "Pragma", "Content-Length", "access-control-allow-origin"};

// Log requests and response
HttpLoggingInterceptor interceptor = new HttpLoggingInterceptor(new HttpLoggingInterceptor.Logger() {
    @Override
    public void log(String message) {

        // Blacklist the elements not required
        for (String pattern: REQUEST_PATTERNS) {
            if (message.startsWith(pattern)) {
                return;
            }
        }
        // Any response patterns as well...
        for (String pattern: RESPONSE_PATTERNS) {
            if (message.startsWith(pattern)) {
                return;
            }
        }
        Log.d("RETROFIT", message);
    }
});
interceptor.setLevel(HttpLoggingInterceptor.Level.BODY);

以下是完整的要点:

https://gist.github.com/mankum93/179c2d5378f27e95742c3f2434de7168

下面是一个拦截器，它同时记录请求和响应体(使用Timber，基于OkHttp文档中的一个例子和其他一些SO答案):

public class TimberLoggingInterceptor implements Interceptor {
    @Override
    public Response intercept(Chain chain) throws IOException {
        Request request = chain.request();

        long t1 = System.nanoTime();
        Timber.i("Sending request %s on %s%n%s", request.url(), chain.connection(), request.headers());
        Timber.v("REQUEST BODY BEGIN\n%s\nREQUEST BODY END", bodyToString(request));

        Response response = chain.proceed(request);

        ResponseBody responseBody = response.body();
        String responseBodyString = response.body().string();

        // now we have extracted the response body but in the process
        // we have consumed the original reponse and can't read it again
        // so we need to build a new one to return from this method

        Response newResponse = response.newBuilder().body(ResponseBody.create(responseBody.contentType(), responseBodyString.getBytes())).build();

        long t2 = System.nanoTime();
        Timber.i("Received response for %s in %.1fms%n%s", response.request().url(), (t2 - t1) / 1e6d, response.headers());
        Timber.v("RESPONSE BODY BEGIN:\n%s\nRESPONSE BODY END", responseBodyString);

        return newResponse;
    }

    private static String bodyToString(final Request request){

        try {
            final Request copy = request.newBuilder().build();
            final Buffer buffer = new Buffer();
            copy.body().writeTo(buffer);
            return buffer.readUtf8();
        } catch (final IOException e) {
            return "did not work";
        }
    }
}

我找到了打印登录改造的方法

OkHttpClient okHttpClient = new OkHttpClient.Builder()
            .addInterceptor(new Interceptor() {
                @Override
                public Response intercept(Chain chain) throws IOException {
                    Request request = chain.request();
                    if (BuildConfig.DEBUG) {
                        Log.e(getClass().getName(), request.method() + " " + request.url());
                        Log.e(getClass().getName(), "" + request.header("Cookie"));
                        RequestBody rb = request.body();
                        Buffer buffer = new Buffer();
                        if (rb != null)
                            rb.writeTo(buffer);
                        LogUtils.LOGE(getClass().getName(), "Payload- " + buffer.readUtf8());
                    }
                    return chain.proceed(request);
                }
            })
            .readTimeout(60, TimeUnit.SECONDS)
            .connectTimeout(60, TimeUnit.SECONDS)
            .build();

            iServices = new Retrofit.Builder()
                    .baseUrl("Your Base URL")
                    .client(okHttpClient)
                    .addConverterFactory(GsonConverterFactory.create())
                    .build()
                    .create(Your Service Interface .class);

对我有用。