OkHttp的拦截器Interceptor

1.请求连接中添加头信息

先自定义一个拦截器如下：

public class DefaultHeaderInterceptor implements Interceptor {

    @Override
    public Response intercept(Chain chain) throws IOException {
        Request originalrequest = chain.request();//原始request
        Headers headers = new Headers.Builder()
                .add("name", "jason")
                .add("age", "27")
                .add("token", "dfedsdfsdfffdd12dsef123sdfef1s2dfe")
                .build();//构造一个Headers
        Request request = originalrequest.newBuilder().headers(headers).build();//注意这行代码别写错了
        return chain.proceed(request);
    }
}

添加拦截器到okhttp：

OkHttpClient okHttpClient = new OkHttpClient.Builder()
                    .addNetworkInterceptor(httpLoggingInterceptor)
                    .addInterceptor(new DefaultHeaderInterceptor())//添加拦截器
                    .connectTimeout(5, TimeUnit.SECONDS)
                    .readTimeout(5, TimeUnit.SECONDS)
                    .build();