Android Okhttp3 (二) 二次封装请求管理类

曾经终败给现在 2021-09-12 03:54 358阅读 0赞

# okHttp介绍 #

通过上面的对比说明，让你不得不做出明智的选择，OkHttp是一个相对成

官网地址：http://square.github.io/okhttp/

官方API地址：http://m.blog.csdn.net/article/details?id=50747352

github源码地址：https://github.com/square/okhttp

[    Android OkHttp（一）源码出发探寻执行原理][Android OkHttp]

##  okHttp主要类 ##

1.)OkHttpClient.java

2.)Request.java

3.)Call.java

4.)RequestBody.java

5.)Response.java

## 添加引用 build.gradle添加如下     ##

compile 'com.squareup.okhttp3:okhttp:3.2.0'

## 二次封装管理类    ##

（一）RequestManager.java 全局属性解说

private static final MediaType MEDIA_TYPE_JSON = MediaType.parse("application/x-www-form-urlencoded; charset=utf-8");//mdiatype 这个需要和服务端保持一致
        private static final MediaType MEDIA_TYPE_MARKDOWN = MediaType.parse("text/x-markdown; charset=utf-8");//mdiatype 这个需要和服务端保持一致
        private static final String TAG = RequestManager.class.getSimpleName();
        private static final String BASE_URL = "http://xxx.com/openapi";//请求接口根地址
        private static volatile RequestManager mInstance;//单利引用
        public static final int TYPE_GET = 0;//get请求
        public static final int TYPE_POST_JSON = 1;//post请求参数为json
        public static final int TYPE_POST_FORM = 2;//post请求参数为表单
        private OkHttpClient mOkHttpClient;//okHttpClient 实例
        private Handler okHttpHandler;//全局处理子线程和M主线程通信

（二）RequestManager.java 构造函数

/**
         * 初始化RequestManager
         */
        public RequestManager(Context context) {
            //初始化OkHttpClient
            mOkHttpClient = new OkHttpClient().newBuilder()
                    .connectTimeout(10, TimeUnit.SECONDS)//设置超时时间
                    .readTimeout(10, TimeUnit.SECONDS)//设置读取超时时间
                    .writeTimeout(10, TimeUnit.SECONDS)//设置写入超时时间
                    .build();
            //初始化Handler
            okHttpHandler = new Handler(context.getMainLooper());
        }

（三）RequestManager.java 获取单利引用 这里用到了双重检查锁实现单例

/**
         * 获取单例引用
         *
         * @return
         */
        public static RequestManager getInstance(Context context) {
            RequestManager inst = mInstance;
            if (inst == null) {
                synchronized (RequestManager.class) {
                    inst = mInstance;
                    if (inst == null) {
                        inst = new RequestManager(context.getApplicationContext());
                        mInstance = inst;
                    }
                }
            }
            return inst;
        }

（四）管理同步请求统一入口

/**
         *  okHttp同步请求统一入口
         * @param actionUrl  接口地址
         * @param requestType 请求类型
         * @param paramsMap   请求参数
         */
        public void requestSyn(String actionUrl, int requestType, HashMap<String, String> paramsMap) {
            switch (requestType) {
                case TYPE_GET:
                    requestGetBySyn(actionUrl, paramsMap);
                    break;
                case TYPE_POST_JSON:
                    requestPostBySyn(actionUrl, paramsMap);
                    break;
                case TYPE_POST_FORM:
                    requestPostBySynWithForm(actionUrl, paramsMap);
                    break;
            }
        }

（1）同步get请求

/**
         * okHttp get同步请求
         * @param actionUrl  接口地址
         * @param paramsMap   请求参数
         */
        private void requestGetBySyn(String actionUrl, HashMap<String, String> paramsMap) {
            StringBuilder tempParams = new StringBuilder();
            try {
                //处理参数
                int pos = 0;
                for (String key : paramsMap.keySet()) {
                    if (pos > 0) {
                        tempParams.append("&");
                    }
                    //对参数进行URLEncoder
                    tempParams.append(String.format("%s=%s", key, URLEncoder.encode(paramsMap.get(key), "utf-8")));
                    pos++;
                }
                //补全请求地址
                String requestUrl = String.format("%s/%s?%s", BASE_URL, actionUrl, tempParams.toString());
                //创建一个请求
                Request request = addHeaders().url(requestUrl).build();
                //创建一个Call
                final Call call = mOkHttpClient.newCall(request);
                //执行请求
                final Response response = call.execute();
                response.body().string();
            } catch (Exception e) {
                Log.e(TAG, e.toString());
            }
        }

（2）同步post请求

/**
         * okHttp post同步请求
         * @param actionUrl  接口地址
         * @param paramsMap   请求参数
         */
        private void requestPostBySyn(String actionUrl, HashMap<String, String> paramsMap) {
            try {
                //处理参数
                StringBuilder tempParams = new StringBuilder();
                int pos = 0;
                for (String key : paramsMap.keySet()) {
                    if (pos > 0) {
                        tempParams.append("&");
                    }
                    tempParams.append(String.format("%s=%s", key, URLEncoder.encode(paramsMap.get(key), "utf-8")));
                    pos++;
                }
                //补全请求地址
                String requestUrl = String.format("%s/%s", BASE_URL, actionUrl);
                //生成参数
                String params = tempParams.toString();
                //创建一个请求实体对象 RequestBody
                RequestBody body = RequestBody.create(MEDIA_TYPE_JSON, params);
                //创建一个请求
                final Request request = addHeaders().url(requestUrl).post(body).build();
                //创建一个Call
                final Call call = mOkHttpClient.newCall(request);
                //执行请求
                Response response = call.execute();
                //请求执行成功
                if (response.isSuccessful()) {
                    //获取返回数据 可以是String，bytes ,byteStream
                    Log.e(TAG, "response ----->" + response.body().string());
                }
            } catch (Exception e) {
                Log.e(TAG, e.toString());
            }
        }

（3）同步post提交表单

/**
         * okHttp post同步请求表单提交
         * @param actionUrl 接口地址
         * @param paramsMap 请求参数
         */
        private void requestPostBySynWithForm(String actionUrl, HashMap<String, String> paramsMap) {
            try {
                //创建一个FormBody.Builder
                FormBody.Builder builder = new FormBody.Builder();
                for (String key : paramsMap.keySet()) {
                    //追加表单信息
                    builder.add(key, paramsMap.get(key));
                }
                //生成表单实体对象
                RequestBody formBody = builder.build();
                //补全请求地址
                String requestUrl = String.format("%s/%s", BASE_URL, actionUrl);
                //创建一个请求
                final Request request = addHeaders().url(requestUrl).post(formBody).build();
                //创建一个Call
                final Call call = mOkHttpClient.newCall(request);
                //执行请求
                Response response = call.execute();
                if (response.isSuccessful()) {
                    Log.e(TAG, "response ----->" + response.body().string());
                }
            } catch (Exception e) {
                Log.e(TAG, e.toString());
            }
        }

（五）管理异步请求统一入口

/**
         * okHttp异步请求统一入口
         * @param actionUrl   接口地址
         * @param requestType 请求类型
         * @param paramsMap   请求参数
         * @param callBack 请求返回数据回调
         * @param <T> 数据泛型
         **/
        public <T> Call requestAsyn(String actionUrl, int requestType, HashMap<String, String> paramsMap, ReqCallBack<T> callBack) {
            Call call = null;
            switch (requestType) {
                case TYPE_GET:
                    call = requestGetByAsyn(actionUrl, paramsMap, callBack);
                    break;
                case TYPE_POST_JSON:
                    call = requestPostByAsyn(actionUrl, paramsMap, callBack);
                    break;
                case TYPE_POST_FORM:
                    call = requestPostByAsynWithForm(actionUrl, paramsMap, callBack);
                    break;
            }
            return call;
        }

（1）异步Get提交表单

/**
         * okHttp get异步请求
         * @param actionUrl 接口地址
         * @param paramsMap 请求参数
         * @param callBack 请求返回数据回调
         * @param <T> 数据泛型
         * @return
         */
        private <T> Call requestGetByAsyn(String actionUrl, HashMap<String, String> paramsMap, final ReqCallBack<T> callBack) {
            StringBuilder tempParams = new StringBuilder();
            try {
                int pos = 0;
                for (String key : paramsMap.keySet()) {
                    if (pos > 0) {
                        tempParams.append("&");
                    }
                    tempParams.append(String.format("%s=%s", key, URLEncoder.encode(paramsMap.get(key), "utf-8")));
                    pos++;
                }
                String requestUrl = String.format("%s/%s?%s", BASE_URL, actionUrl, tempParams.toString());
                final Request request = addHeaders().url(requestUrl).build();
                final Call call = mOkHttpClient.newCall(request);
                call.enqueue(new Callback() {
                    @Override
                    public void onFailure(Call call, IOException e) {
                        failedCallBack("访问失败", callBack);
                        Log.e(TAG, e.toString());
                    }
    
                    @Override
                    public void onResponse(Call call, Response response) throws IOException {
                        if (response.isSuccessful()) {
                            String string = response.body().string();
                            Log.e(TAG, "response ----->" + string);
                            successCallBack((T) string, callBack);
                        } else {
                            failedCallBack("服务器错误", callBack);
                        }
                    }
                });
                return call;
            } catch (Exception e) {
                Log.e(TAG, e.toString());
            }
            return null;
        }

（2）异步POST提交表单

/**
         * okHttp post异步请求
         * @param actionUrl 接口地址
         * @param paramsMap 请求参数
         * @param callBack 请求返回数据回调
         * @param <T> 数据泛型
         * @return
         */
        private <T> Call requestPostByAsyn(String actionUrl, HashMap<String, String> paramsMap, final ReqCallBack<T> callBack) {
            try {
                StringBuilder tempParams = new StringBuilder();
                int pos = 0;
                for (String key : paramsMap.keySet()) {
                    if (pos > 0) {
                        tempParams.append("&");
                    }
                    tempParams.append(String.format("%s=%s", key, URLEncoder.encode(paramsMap.get(key), "utf-8")));
                    pos++;
                }
                String params = tempParams.toString();
                RequestBody body = RequestBody.create(MEDIA_TYPE_JSON, params);
                String requestUrl = String.format("%s/%s", BASE_URL, actionUrl);
                final Request request = addHeaders().url(requestUrl).post(body).build();
                final Call call = mOkHttpClient.newCall(request);
                call.enqueue(new Callback() {
                    @Override
                    public void onFailure(Call call, IOException e) {
                        failedCallBack("访问失败", callBack);
                        Log.e(TAG, e.toString());
                    }
    
                    @Override
                    public void onResponse(Call call, Response response) throws IOException {
                        if (response.isSuccessful()) {
                            String string = response.body().string();
                            Log.e(TAG, "response ----->" + string);
                            successCallBack((T) string, callBack);
                        } else {
                            failedCallBack("服务器错误", callBack);
                        }
                    }
                });
                return call;
            } catch (Exception e) {
                Log.e(TAG, e.toString());
            }
            return null;
        }

（3）异步POST提交表单

/**
         * okHttp post异步请求表单提交
         * @param actionUrl 接口地址
         * @param paramsMap 请求参数
         * @param callBack 请求返回数据回调
         * @param <T> 数据泛型
         * @return
         */
        private <T> Call requestPostByAsynWithForm(String actionUrl, HashMap<String, String> paramsMap, final ReqCallBack<T> callBack) {
            try {
                FormBody.Builder builder = new FormBody.Builder();
                for (String key : paramsMap.keySet()) {
                    builder.add(key, paramsMap.get(key));
                }
                RequestBody formBody = builder.build();
                String requestUrl = String.format("%s/%s", BASE_URL, actionUrl);
                final Request request = addHeaders().url(requestUrl).post(formBody).build();
                final Call call = mOkHttpClient.newCall(request);
                call.enqueue(new Callback() {
                    @Override
                    public void onFailure(Call call, IOException e) {
                        failedCallBack("访问失败", callBack);
                        Log.e(TAG, e.toString());
                    }
    
                    @Override
                    public void onResponse(Call call, Response response) throws IOException {
                        if (response.isSuccessful()) {
                            String string = response.body().string();
                            Log.e(TAG, "response ----->" + string);
                            successCallBack((T) string, callBack);
                        } else {
                            failedCallBack("服务器错误", callBack);
                        }
                    }
                });
                return call;
            } catch (Exception e) {
                Log.e(TAG, e.toString());
            }
            return null;
        }

（六）ReqCallBack

public interface ReqCallBack<T> {
        /**
         * 响应成功
         */
         void onReqSuccess(T result);
    
        /**
         * 响应失败
         */
         void onReqFailed(String errorMsg);
    }

（七）添加请求头

/**
         * 统一为请求添加头信息
         * @return
         */
        private Request.Builder addHeaders() {
            Request.Builder builder = new Request.Builder()
                    .addHeader("Connection", "keep-alive")
                    .addHeader("platform", "2")
                    .addHeader("phoneModel", Build.MODEL)
                    .addHeader("systemVersion", Build.VERSION.RELEASE)
                    .addHeader("appVersion", "3.2.0");
            return builder;
        }

（七）成功回调

/**
         * 统一同意处理成功信息
         * @param result
         * @param callBack
         * @param <T>
         */
        private <T> void successCallBack(final T result, final ReqCallBack<T> callBack) {
            okHttpHandler.post(new Runnable() {
                @Override
                public void run() {
                    if (callBack != null) {
                        callBack.onReqSuccess(result);
                    }
                }
            });
        }

（七）失败回调

/**
         * 统一处理失败信息
         * @param errorMsg
         * @param callBack
         * @param <T>
         */
        private <T> void failedCallBack(final String errorMsg, final ReqCallBack<T> callBack) {
            okHttpHandler.post(new Runnable() {
                @Override
                public void run() {
                    if (callBack != null) {
                        callBack.onReqFailed(errorMsg);
                    }
                }
            });
        }

完。

[Android OkHttp]: https://blog.csdn.net/csdn_aiyang/article/details/72368284