Rxjava+Retrofit2+Okhttp3

最新推荐文章于 2020-03-30 16:10:11 发布

原创最新推荐文章于 2020-03-30 16:10:11 发布 · 2.2k 阅读

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CC 4.0 BY-SA版权

本文详细介绍了Retrofit网络请求库的使用方法，包括不同类型的参数注解如@Path、@Query、@QueryMap、@Field、@Body等的应用场景，并提供了DIGEST认证的具体实现。

@Path：所有在网址中的参数（URL的问号前面），如：

http://102.10.10.132/api/Accounts/{accountId}

@Query：GET访问时，URL问号后面的参数，如：

http://102.10.10.132/api/Comments?access_token={access_token}

@QueryMap：相当于多个@Query

@GET("index.php/app/device/init")
Observable<InitBean> getAuthCode(@QueryMap Map<String, Object> param);

@Field：用于POST请求，提交单个数据 ,使用@Field时记得添加@FormUrlEncoded

@FormUrlEncoded
@POST("index.php/app/pay/index")
Observable<WechatPay> payWechat(@Field("money") String money,
                                @Field("guid") String guid,
                                @Field("store_id") String store_id,
                                @Field("shop_id") String shop_id,
                                @Field("auth_code") String auth_code);

@Body：相当于多个@Field，以对象的形式提交

同时访问网络时需要DIGEST认证，认证方式如下：

import org.apache.http.auth.AuthenticationException;
import org.apache.http.auth.MalformedChallengeException;
import org.apache.http.impl.auth.DigestScheme;
import org.apache.http.message.BasicHeader;
import org.apache.http.message.BasicHttpRequest;

import java.io.IOException;

import okhttp3.Authenticator;
import okhttp3.Request;
import okhttp3.Response;
import okhttp3.Route;


public class DigestAuthenticator implements Authenticator {

    DigestScheme mDigestScheme = new DigestScheme();
    org.apache.http.auth.Credentials mCredentials = null;

    public DigestAuthenticator(String username,String password) {
        mCredentials = new org.apache.http.auth.UsernamePasswordCredentials(username, password);
    }

    @Override
    public Request authenticate(Route route, Response response) throws IOException {
        try {
            mDigestScheme.processChallenge(new BasicHeader("WWW-Authenticate", response.header("WWW-Authenticate")));
        } catch (MalformedChallengeException e) {
        }

        org.apache.http.HttpRequest request = new BasicHttpRequest(
                response.request().method(),
                response.request().url().toString()
        );
        String authHeader;
        try {
            authHeader = mDigestScheme.authenticate(mCredentials, request).getValue();
        } catch (AuthenticationException e) {
            authHeader = null;
        }
        if (authHeader == null) {
            return null;
        }
        return response.request().newBuilder().addHeader("Authorization", authHeader).build();
    }
}

mOkHttpClient = new OkHttpClient.Builder()
                            .cache(cache)
                            .addInterceptor(mRewriteCacheControlInterceptor)
                            .addNetworkInterceptor(mRewriteCacheControlInterceptor)
                            .addInterceptor(interceptor)
                            .retryOnConnectionFailure(true)
                            .connectTimeout(15, TimeUnit.SECONDS)
                            .authenticator(new DigestAuthenticator(username,password))
                            .build();

Retrofit retrofit = new Retrofit.Builder()
                .baseUrl(Base_URL)
                .client(mOkHttpClient)
                .addCallAdapterFactory(RxJavaCallAdapterFactory.create())
                .addConverterFactory(GsonConverterFactory.create())
                .build();

就可以添加认证。