日志拦截器

1.自定义一个类实现 Interceptor

package com.example.interceptor;

import android.util.Log;

import java.io.IOException;

import okhttp3.Interceptor;
import okhttp3.Request;
import okhttp3.Response;
import okhttp3.ResponseBody;

/**
 * Created by 。 on 2018/12/20.
 */

public class LoggingInterceptor implements Interceptor {
    @Override
    public Response intercept(Chain chain) throws IOException {
        //这个chain里面包含了request和response，所以你要什么都可以从这里拿
        Request request = chain.request();

        long t1 = System.nanoTime();//请求发起的时间
        Log.i("dt",String.format("发送请求 %s on %s%n%s",
                request.url(), chain.connection(), request.headers()));

        Response response = chain.proceed(request);

        long t2 = System.nanoTime();//收到响应的时间

        //这里不能直接使用response.body().string()的方式输出日志
        //因为response.body().string()之后，response中的流会被关闭，程序会报错，我们需要创建出一
        //个新的response给应用层处理
        ResponseBody responseBody = response.peekBody(1024 * 1024);

        Log.i("dt",String.format("接收响应: [%s] %n返回json:【%s】 %.1fms%n%s",
                response.request().url(),
                responseBody.string(),
                (t2 - t1) / 1e6d,
                response.headers()));

        return response;

    }
}

2.在你的工具类中写入以下方法

 public static String get(String urlString){

        OkHttpClient okHttpClient = new OkHttpClient.Builder()
                .addInterceptor(new LoggingInterceptor())//日志拦截器
                .connectTimeout(10, TimeUnit.SECONDS)//连接超时
                .readTimeout(10,TimeUnit.SECONDS)//读取超时
                .writeTimeout(10,TimeUnit.SECONDS)//写入超时
                .build();

        Request request = new Request.Builder().url(urlString).get().build();

        try {
            Response response = okHttpClient.newCall(request).execute();
            String result = response.body().string();
            Log.i("dt","请求结果："+result);
            return result;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return "";
    }