不廢話，需求：根據(jù)服務器API封裝網(wǎng)絡請求，怎么辦？

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簡單封裝okhttp的get,post，put,delete請求：

PersistentCookieJar cookieJar = new PersistentCookieJar(new SetCookieCache(), new SharedPrefsCookiePersistor(getApplicationContext()));HttpUtils.okHttpClient = new OkHttpClient.Builder().cookieJar(cookieJar).build();

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/*** 為HttpGet 的 url 方便的添加多個name value 參數(shù)。** @param url* @param params* @return*/public static String attachHttpGetParams(String url, LinkedHashMap<String, String> params) {Iterator<String> keys = params.keySet().iterator();Iterator<String> values = params.values().iterator();StringBuffer stringBuffer = new StringBuffer();stringBuffer.append("?");for (int i = 0; i < params.size(); i++) {String value = null;try {value = URLEncoder.encode(values.next(), "utf-8");} catch (Exception e) {e.printStackTrace();}stringBuffer.append(keys.next() + "=" + value);if (i != params.size() - 1) {stringBuffer.append("&");}}return url + stringBuffer.toString();}public static void HTTP_GET_IMPROVE(final String url, final HTTPInterface httpInterface, final int count) {Request request = builder.url(url).method("GET", null).build();//3.創(chuàng)建一個call對象,參數(shù)就是Request請求對象Call call = okHttpClient.newCall(request);//4.請求加入調度，重寫回調方法call.enqueue(new Callback() {@Overridepublic void onFailure(Call call, IOException e) {httpInterface.onFailure(call, e);}@Overridepublic void onResponse(Call call, Response response) throws IOException {int code = response.code(); // Log.e("HTTP_GET_IMPROVE", " code=" + code + " url=" + url + " count=" + count);int myCount = count - 1;if (code != 200 && count > 0) {HTTP_GET_IMPROVE(url, httpInterface, myCount);} else {httpInterface.onResponse(call, response);}}});}public static void HTTP_POST_IMPROVE(final String url, RequestBody requestBody, final HTTPInterface httpInterface, final int count) {//1.創(chuàng)建OkHttpClient對象 // OkHttpClient okHttpClient = new OkHttpClient();//2.通過new FormBody()調用build方法,創(chuàng)建一個RequestBody,可以用add添加鍵值對//3.創(chuàng)建Request對象，設置URL地址，將RequestBody作為post方法的參數(shù)傳入 // Request request = new Request.Builder().url(url).post(requestBody).build();final Request request = builder.url(url).post(requestBody).build();//4.創(chuàng)建一個call對象,參數(shù)就是Request請求對象Call call = okHttpClient.newCall(request);//5.請求加入調度,重寫回調方法call.enqueue(new Callback() {@Overridepublic void onFailure(Call call, IOException e) {httpInterface.onFailure(call, e);}@Overridepublic void onResponse(Call call, Response response) throws IOException {int code = response.code();int myCount = count - 1;if (code != 200 && count > 0) {HTTP_GET_IMPROVE(url, httpInterface, myCount);} else {// Log.e("TAG", "POST JSESSIONID= " + response.header("JSESSIONID"));httpInterface.onResponse(call, response);}}});}public static void HTTP_PATCH_IMPROVE(final String url, RequestBody requestBody, final HTTPInterface httpInterface, final int count) {//1.創(chuàng)建OkHttpClient對象 // OkHttpClient okHttpClient = new OkHttpClient();//2.創(chuàng)建Request對象，設置一個url地址（百度地址）,設置請求方式。Request request = new Request.Builder().url(url).method("PATCH", requestBody).build();//3.創(chuàng)建一個call對象,參數(shù)就是Request請求對象Call call = okHttpClient.newCall(request);//4.請求加入調度，重寫回調方法call.enqueue(new Callback() {@Overridepublic void onFailure(Call call, IOException e) {httpInterface.onFailure(call, e);}@Overridepublic void onResponse(Call call, Response response) throws IOException {int code = response.code();int myCount = count - 1;if (code != 200 && count > 0) {HTTP_GET_IMPROVE(url, httpInterface, myCount);} else {httpInterface.onResponse(call, response);}}});}public static void HTTP_PUT_IMPROVE(final String url, RequestBody requestBody, final HTTPInterface httpInterface, final int count) {//1.創(chuàng)建OkHttpClient對象 // OkHttpClient okHttpClient = new OkHttpClient();//2.創(chuàng)建Request對象，設置一個url地址（百度地址）,設置請求方式。Request request = new Request.Builder().url(url).method("PUT", requestBody).build();//3.創(chuàng)建一個call對象,參數(shù)就是Request請求對象Call call = okHttpClient.newCall(request);//4.請求加入調度，重寫回調方法call.enqueue(new Callback() {@Overridepublic void onFailure(Call call, IOException e) {httpInterface.onFailure(call, e);}@Overridepublic void onResponse(Call call, Response response) throws IOException {int code = response.code();int myCount = count - 1;if (code != 200 && count > 0) {HTTP_GET_IMPROVE(url, httpInterface, myCount);} else {httpInterface.onResponse(call, response);}}});}public static void HTTP_DELETE_IMPROVE(final String url, RequestBody requestBody, final HTTPInterface httpInterface, final int count) {//1.創(chuàng)建OkHttpClient對象 // OkHttpClient okHttpClient = new OkHttpClient();//2.通過new FormBody()調用build方法,創(chuàng)建一個RequestBody,可以用add添加鍵值對//3.創(chuàng)建Request對象，設置URL地址，將RequestBody作為post方法的參數(shù)傳入Request request = new Request.Builder().url(url).delete(requestBody).build();//4.創(chuàng)建一個call對象,參數(shù)就是Request請求對象Call call = okHttpClient.newCall(request);//5.請求加入調度,重寫回調方法call.enqueue(new Callback() {@Overridepublic void onFailure(Call call, IOException e) {httpInterface.onFailure(call, e);}@Overridepublic void onResponse(Call call, Response response) throws IOException {int code = response.code();int myCount = count - 1;if (code != 200 && count > 0) {HTTP_GET_IMPROVE(url, httpInterface, myCount);} else {httpInterface.onResponse(call, response);}}});}/***/public static void HTTPUploadImage(final String url, final String imagePath, final HTTPInterface httpInterface, final int count) {Log.e("imagePath", "HTTPUploadImage " + imagePath);File file = new File(imagePath);RequestBody image = RequestBody.create(MediaType.parse("image/png"), file);RequestBody requestBody = new MultipartBody.Builder().setType(MultipartBody.FORM).addFormDataPart("files", imagePath, image).build();Request request = new Request.Builder().url(url).post(requestBody).build();Call call = okHttpClient.newCall(request);call.enqueue(new Callback() {@Overridepublic void onFailure(Call call, IOException e) {}@Overridepublic void onResponse(Call call, Response response) throws IOException {int code = response.code();int myCount = count - 1;if (code != 200 && count > 0) {HTTPUploadImage(url, imagePath, httpInterface, myCount);} else {httpInterface.onResponse(call, response);}}});}

根據(jù)服務器的API封裝：

public static void outProduct(String token, String product_id, HttpUtils.HTTPInterface httpInterface) {RequestBody requestBody = new FormBody.Builder().add("token", token).add("product_id", product_id).build();String url = HttpUtils.OUT_PRODUCT;HttpUtils.HTTP_POST_IMPROVE(url, requestBody, httpInterface, HttpUtils.HTTP_TOTAL_COUNT);}

這樣的好處是網(wǎng)絡請求的API與具體的界面分離了，我之前寫代碼，每次寫完界面，再做界面的請求，導致很多界面有同樣的網(wǎng)絡請求，不停復制，修改代碼，浪費時間。封裝代碼也是一個程序員技術提升的體現(xiàn)。

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