RxJava2与Retrofit2是老搭档了，之前写了一篇《RxJava和Retrofit2的统一处理单个请求》，是用的Rxjava1.0，本次使用Rxjava2.0与Retrofit2进行封装，一样整洁、简单、实用。Rxjava2相比Rxjava1优化和改动不少了东西，网上有很多大神写的文章，这里就不粘贴复制了。封装的过程有什么问题、疑问，请在下方留言，作者会一一回复。
核心网络请求：
package com.lin.netrequestdemo.data;
import android.util.Log;
import io.reactivex.Observable;
import io.reactivex.android.schedulers.AndroidSchedulers;
import io.reactivex.disposables.Disposable;
import io.reactivex.functions.Consumer;
import io.reactivex.functions.Function;
import io.reactivex.schedulers.Schedulers;
public class RxNet {
/**
* 统一处理单个请求
*
* @param observable
* @param callBack
* @param <T>
*/
public static <T> Disposable request(Observable<BaseResponse<T>> observable, final RxNetCallBack<T> callBack) {
return observable.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.onErrorReturn(new Function<Throwable, BaseResponse<T>>() {
@Override
public BaseResponse<T> apply(Throwable throwable) {
Log.e("LinNetError", throwable.getMessage());
callBack.onFailure(ExceptionHandle.handleException(throwable));
return null;
}
})
.subscribe(new Consumer<BaseResponse<T>>() {
@Override
public void accept(BaseResponse<T> tBaseResponse) {
if (tBaseResponse.getCode().equals("200")) {
callBack.onSuccess(tBaseResponse.getData());
} else {
callBack.onFailure(tBaseResponse.getMsg());
}
}
}, new Consumer<Throwable>() {
@Override
public void accept(Throwable throwable) {
Log.e("LinNetError", "单个请求的错误" + throwable.getMessage());
}
});
}
/**
* 统一处理单个请求
* 返回数据没有body
*/
public static Disposable requestWithoutBody(Observable<BaseResponse> observable,
final RxNetCallBack<String> callBack) {
return observable.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.onErrorReturn(new Function<Throwable, BaseResponse>() {
@Override
public BaseResponse apply(Throwable throwable) {
Log.v("LinNetError", throwable.getMessage());
callBack.onFailure(ExceptionHandle.handleException(throwable));
return null;
}
})
.subscribe(new Consumer<BaseResponse>() {
@Override
public void accept(BaseResponse baseResponse) {
if (baseResponse.getCode().equals("200")) {
callBack.onSuccess(baseResponse.getMsg());
} else {
callBack.onFailure(baseResponse.getMsg());
}
}
}, new Consumer<Throwable>() {
@Override
public void accept(Throwable throwable) {
Log.v("LinNetError", "单个请求的错误:没有body" + throwable.getMessage());
}
});
}
}
回调就是普通的泛型的回调
package com.lin.netrequestdemo.data;
public interface RxNetCallBack<T> {
/**
* 数据请求成功
*
* @param data 请求到的数据
*/
void onSuccess(T data);
/**
* 数据请求失败
*/
void onFailure(String msg);
}
错误异常处理（可能不全）：
package com.lin.netrequestdemo.data;
import android.net.ParseException;
import com.google.gson.JsonParseException;
import org.apache.http.conn.ConnectTimeoutException;
import org.json.JSONException;
import java.net.ConnectException;
import retrofit2.HttpException;
public class ExceptionHandle {
private static final int UNAUTHORIZED = 401;
private static final int FORBIDDEN = 403;
private static final int NOT_FOUND = 404;
private static final int REQUEST_TIMEOUT = 408;
private static final int INTERNAL_SERVER_ERROR = 500;
private static final int BAD_GATEWAY = 502;
private static final int SERVICE_UNAVAILABLE = 503;
private static final int GATEWAY_TIMEOUT = 504;
public static String handleException(Throwable e) {
String errorMsg;
if (e instanceof HttpException) {
HttpException httpException = (HttpException) e;
switch (httpException.code()) {
case UNAUTHORIZED:
case FORBIDDEN:
case NOT_FOUND:
case REQUEST_TIMEOUT:
case GATEWAY_TIMEOUT:
case INTERNAL_SERVER_ERROR:
case BAD_GATEWAY:
case SERVICE_UNAVAILABLE:
default:
errorMsg = "网络错误";
break;
}
return errorMsg + ":" + httpException.code();
} else if (e instanceof JsonParseException || e instanceof JSONException || e instanceof ParseException) {
return "解析错误";
} else if (e instanceof ConnectException) {
return "连接失败";
} else if (e instanceof javax.net.ssl.SSLHandshakeException) {
return "证书验证失败";
} else if (e instanceof ConnectTimeoutException) {
return "连接超时";
} else if (e instanceof java.net.SocketTimeoutException) {
return "连接超时";
} else {
return "未知错误";
}
}
}
然后就是ApiManager：
package com.lin.netrequestdemo.data.api;
import android.util.Log;
import com.lin.netrequestdemo.data.AppConstants;
import java.util.concurrent.TimeUnit;
import okhttp3.OkHttpClient;
import okhttp3.logging.HttpLoggingInterceptor;
import retrofit2.Retrofit;
import retrofit2.adapter.rxjava2.RxJava2CallAdapterFactory;
import retrofit2.converter.gson.GsonConverterFactory;
public class ApiManager {
private Retrofit client;
private ApiManager() {
client = new Retrofit.Builder()
.baseUrl(AppConstants.Base_Url_Test)
.client(initClient())
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.addConverterFactory(GsonConverterFactory.create())
.build();
}
private static volatile MallApi INSTANCE;
public static MallApi getInstance() {
if (INSTANCE == null) {
synchronized (ApiManager.class) {
if (INSTANCE == null) {
INSTANCE = new ApiManager().getMallApi();
}
}
}
return INSTANCE;
}
private MallApi getMallApi() {
return client.create(MallApi.class);
}
private static OkHttpClient initClient() {
OkHttpClient.Builder builder = new OkHttpClient.Builder();
//声明日志类
HttpLoggingInterceptor httpLoggingInterceptor = new HttpLoggingInterceptor(new HttpLoggingInterceptor.Logger() {
@Override
public void log(String message) {
Log.v("LinNet", message);
}
});
//设定日志级别
httpLoggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
//延时
builder.addInterceptor(httpLoggingInterceptor)
.connectTimeout(10, TimeUnit.SECONDS)
.readTimeout(10, TimeUnit.SECONDS)
.writeTimeout(10, TimeUnit.SECONDS);
return builder.build();
}
}
怎么用：
showLoading();
Map<String, String> map = new ArrayMap<>();
map.put("action", "pricetrend");
addCompositeDisposable(RxNet.request(ApiManager.getInstance().getCat(map), new RxNetCallBack<List<CatBean>>() {
@Override
public void onSuccess(List<CatBean> data) {
hideLoading();
showToast("获取列表成功" + data.get(0).toString());
}
@Override
public void onFailure(String msg) {
hideLoading();
showToast(msg);
}
}));
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