Android(安卓)APP okhttp网络请求框架更换多个baseUrl

主要思路是请求url时加个请求头，然后在拦截器里通过本次请求的请求头来判断使用对应的baseUrl。

主要代码

import com.xxx.xxx.MyClient;import java.io.IOException;import java.util.List;import okhttp3.HttpUrl;import okhttp3.Interceptor;import okhttp3.Request;import okhttp3.Response;public class MulBaseUrlInterceptor implements Interceptor {    public MulBaseUrlInterceptor() {    }    @Override    public Response intercept(Chain chain) throws IOException {        Request request = chain.request();        //获取处理后的新newRequest        Request newRequest;        //获取老的url        HttpUrl oldUrl = request.url();        //获取originalRequest的创建者builder        Request.Builder builder = request.newBuilder();        // 获取头信息的集合        List<String> urlTypeList = request.headers(MyClient.URL_TYPE_KEY);        if (urlTypeList != null && urlTypeList.size() > 0) {            //删除原有配置中的值,就是namesAndValues集合里的值            builder.removeHeader(MyClient.URL_TYPE_KEY);            //获取头信息中配置的value            String headerValueFirst = urlTypeList.get(0);            //根据头信息中配置的value,来匹配新的base_url地址            HttpUrl baseURL = null;            //重建新的HttpUrl，需要重新设置的url部分            String oldUrlStr = oldUrl.toString();            String oldUrlHost = oldUrl.host();            int oldUrlHostIndex = oldUrlStr.indexOf(oldUrlHost);            int oldUrlStrLength = oldUrlHost.length();            switch (headerValueFirst) {                case MyClient.URL_TYPE_VALUE_MIDDLE: // 第一种                    baseURL = HttpUrl.parse(MyClient.getMiddleUrl() + oldUrlStr.substring(oldUrlHostIndex + oldUrlStrLength+1));                    break;                case MyClient.URL_TYPE_VALUE_TASK: // 第二种                    baseURL = HttpUrl.parse(MyClient.getTaskUrl() + oldUrlStr.substring(oldUrlHostIndex + oldUrlStrLength+1));                    break;                case MyClient.URL_TYPE_VALUE_BASE: // 第三种                    baseURL = HttpUrl.parse(MyClient.getStorageUrl() + oldUrlStr.substring(oldUrlHostIndex + oldUrlStrLength+1));                    break;            }            if (baseURL != null) {                newRequest = builder.url(baseURL).build();            } else {                newRequest = request;            }        } else {            newRequest = request;        }        Response response = chain.proceed(newRequest);        return response;    }}

第二步，使用这个拦截器

addInterceptor(new MulBaseUrlInterceptor())即可

private static Retrofit getMyRetrofit() {        SSLSocketFactory sslSocketFactory = getSSLSocketFactory();        if(retrofit == null) {            okHttpClient = sOkHttpBuilder                    .readTimeout(60L, TimeUnit.SECONDS)// 读取超时                    .writeTimeout(60L, TimeUnit.SECONDS)// 写入超时                    .connectTimeout(60L, TimeUnit.SECONDS)// 连接超时                    .addInterceptor(new XxxInterceptor())                    .addInterceptor(new XxxInterceptor(1))                    .addInterceptor(new MulBaseUrlInterceptor())                    .sslSocketFactory(sslSocketFactory, (X509TrustManager)trustAllCerts[0])                    .hostnameVerifier(new HostnameVerifier() {                        @Override                        public boolean verify(String hostname, SSLSession session) {                            return true;                        }                    })                    .build();            retrofit = new Retrofit.Builder()                    .baseUrl(getOperationUrl())                    .client(okHttpClient)                    .addCallAdapterFactory(RxJava2CallAdapterFactory.create())                    .addConverterFactory(GsonConverterFactory.create())                    .build();        }        return retrofit;    }

主要思路是请求url时加个请求头，然后在拦截器里通过本次请求的请求头来判断使用对应的baseUrl。

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