简单okHttpUtils封装

不说废话，直接上代码（okHttpUtils）

package com.weijinran.wjr_library.utils;import android.os.Handler;import android.os.Looper;import java.io.IOException;import java.util.concurrent.TimeUnit;import okhttp3.Call;import okhttp3.Callback;import okhttp3.FormBody;import okhttp3.MediaType;import okhttp3.MultipartBody;import okhttp3.OkHttpClient;import okhttp3.Request;import okhttp3.RequestBody;import okhttp3.Response;/** * Created by weijinran ，Email [e-mail]，on 2017/10/18. * Describe:网络请求 * PS: Not easy to write code, please indicate. */public class OkHttpUtils {    private static final String BASE_URL = "";    /**     * 网络访问要求singleton     */    private static OkHttpUtils instance;    // 必须要用的okhttpclient实例,在构造器中实例化保证单一实例    private OkHttpClient mOkHttpClient;    public static final MediaType JSON = MediaType.            parse("application/json; charset=utf-8");    private Handler mHandler;    private OkHttpUtils() {        /**         * okHttp3中超时方法移植到Builder中         */        mOkHttpClient = new OkHttpClient.Builder()                .connectTimeout(10, TimeUnit.SECONDS)                .readTimeout(10, TimeUnit.SECONDS)                .writeTimeout(30, TimeUnit.SECONDS)                .build();        mHandler = new Handler(Looper.getMainLooper());    }    public static OkHttpUtils getInstance() {        if (instance == null) {            synchronized (OkHttpUtils.class) {                if (instance == null) {                    instance = new OkHttpUtils();                }            }        }        return instance;    }    /**     * 对外提供的Get方法访问     *     * @param requestname     * @param listener     */    public void Get(String requestname, ResultCallBackListener listener) {        /**         * 通过url和GET方式构建Request         */        Request request = bulidRequestForGet(BASE_URL + requestname);        /**         * 请求网络的逻辑         */        requestNetWork(requestname, request, listener);    }    /**     * 对外提供的Post方法访问     *     * @param requestname     * @param body:       提交内容为表单数据     * @param listener     */    public void PostWithFormData(String requestname, FormBody.Builder body, ResultCallBackListener listener) {        /**         * 通过url和POST方式构建Request         */        Request request = bulidRequestForPostByForm(BASE_URL + requestname, body);        /**         * 请求网络的逻辑         */        requestNetWork(requestname, request, listener);    }    /**     * 对外提供的Post方法访问     *     * @param requestname     * @param json:       提交内容为json数据     * @param listener     */    public void PostWithJson(String requestname, String json, ResultCallBackListener listener) {        /**         * 通过url和POST方式构建Request         */        Request request = bulidRequestForPostByJson(BASE_URL + requestname, json);        /**         * 请求网络的逻辑         */        requestNetWork(requestname, request, listener);    }    /**     * 对外提供的Post方法访问     *     * @param requestname     * @param body        提交内容为文件数据     * @param listener     */    public void PostWithFile(final String requestname, MultipartBody.Builder body, ResultCallBackListener listener) {        /**         * 通过url和POST方式构建Request         */        Request request = bulidRequestForPostByFile(BASE_URL + requestname, body);        /**         * 请求网络的逻辑         */        requestNetWork(requestname, request, listener);    }    /**     * POST方式构建Request {File}     *     * @param url     * @param body     * @return     */    private Request bulidRequestForPostByFile(String url, MultipartBody.Builder body) {        RequestBody requestBody = body.build();        return new Request.Builder()                .url(url)                .post(requestBody)                .build();    }    /**     * POST方式构建Request {json}     *     * @param url     * @param json     * @return     */    private Request bulidRequestForPostByJson(String url, String json) {        RequestBody body = RequestBody.create(JSON, json);        return new Request.Builder()                .url(url)                .post(body)                .build();    }    /**     * POST方式构建Request {Form}     *     * @param url     * @param body     * @return     */    private Request bulidRequestForPostByForm(String url, FormBody.Builder body) {        RequestBody requestBody = body.build();        return new Request.Builder()                .url(url)                .post(requestBody)                .build();    }    /**     * GET方式构建Request     *     * @param url     * @return     */    private Request bulidRequestForGet(String url) {        return new Request.Builder()                .url(url)                .get()                .build();    }    private void requestNetWork(final String requestname, final Request request, final ResultCallBackListener listener) {        /**         * 判断网络是否连接         */        if (!NetworkUtils.isConnected()) {            listener.noNetWork();            return;        }        /**         * 加载前         */        listener.onLoadingShow();        /**         * 处理连网逻辑，此处只处理异步操作enqueue         */        mOkHttpClient.newCall(request).enqueue(new Callback() {            @Override            public void onFailure(Call call, final IOException e) {                //使用handler返回UI线程                mHandler.post(new Runnable() {                    @Override                    public void run() {                        listener.onFailure(requestname, e);                        /**                         * 数据加载后                         */                        listener.onLoadingDismiss();                    }                });            }            @Override            public void onResponse(Call call, final Response response) throws IOException {                final String result_str = response.body().string();                //使用handler返回UI线程                mHandler.post(new Runnable() {                    @Override                    public void run() {                        if (response.isSuccessful()) {                            listener.onSuccess(requestname, result_str);                        } else {                            listener.onError(requestname, result_str);                        }                        /**                         * 数据加载后                         */                        listener.onLoadingDismiss();                    }                });            }        });    }}

下面是回调的接口（ResultCallBackListener）

package com.weijinran.wjr_library.utils;/** * Created by weijinran ，Email [e-mail]，on 2017/10/18. * Describe:网络请求回调接口 * PS: Not easy to write code, please indicate. */public interface ResultCallBackListener {    void noNetWork();    void onLoadingShow();    void onLoadingDismiss();    void onSuccess(String requestname, String result_str);    void onFailure(String requestname, Exception e);    void onError(String requestname, String result_str);}