Retrofit获取网络数据、日志拦截器

最新推荐文章于 2023-04-04 13:39:44 发布

原创最新推荐文章于 2023-04-04 13:39:44 发布 · 629 阅读

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CC 4.0 BY-SA版权

本文介绍如何利用Retrofit库在Android中获取网络数据，同时讲解如何实现日志拦截器，以便在应用中记录和调试网络请求。

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import java.io.IOException;

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

public class LoggingInterceptor implements Interceptor {
    @Override
    public Response intercept(Chain chain) throws IOException {
        //拿到Request对象
        Request request = chain.request();
        long t1 = System.nanoTime();
        System.out.println(" request  = " + String.format("Sending request %s on %s%n%s",
                request.url(), chain.connection(), request.headers()));
        //拿到Response对象
        Response response = chain.proceed(request);
        long t2 = System.nanoTime();
        //得出请求网络,到得到结果,中间消耗了多长时间
        System.out.println("response  " + String.format("Received response for %s in %.1fms%n%s",
                response.request().url(), (t2 - t1) / 1e6d, response.headers()));
        return response;
    }
}

import retrofit2.Call;
import retrofit2.http.GET;
import retrofit2.http.Query;


public interface UrlInterface {
    @GET("nba/")
    Call<JsonBean> getwz(@Query("key")String key,@Query("num")int num);
}

package shopping.bwie.com.liyuanqi20181207;

import java.util.List;

import okhttp3.OkHttpClient;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.GsonConverterFactory;
import retrofit2.Response;
import retrofit2.Retrofit;

public class RetrofitUrl {
    public static void getUrl(int num, final OkhttpInterface<List<JsonBean.NewslistBean>> okhttpInterface){
    
        OkHttpClient.Builder builder = new OkHttpClient.Builder();
        builder.addInterceptor(new LoggingInterceptor());

        Retrofit retrofit = new Retrofit.Builder()
                .addConverterFactory(GsonConverterFactory.create())
                .baseUrl("http://api.tianapi.com/")
                .client(builder.build())
                .build();
                
        UrlInterface urlInterface = retrofit.create(UrlInterface.class);
        Call<JsonBean> getwz = urlInterface.getwz("71e58b5b2f930eaf1f937407acde08fe", num);
        getwz.enqueue(new Callback<JsonBean>() {
            @Override
            public void onResponse(Call<JsonBean> call, Response<JsonBean> response) {
                    okhttpInterface.datacg(response.body().getNewslist());
            }

            @Override
            public void onFailure(Call<JsonBean> call, Throwable t) {
                    okhttpInterface.datasb((Exception) t);
            }
        });
    }
}