封装OkHttp

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一.创建接口

public interface CallBack {    void Onsuccess(String tag, Object o);    void Onfailed(String tag, Exception e);}

二.创建gson工具包

public class GsonUtils {    private static Gson instance;    private GsonUtils() {    }    public static Gson getInstance() {        if (instance == null) {            instance = new Gson();        }        return instance;    }}

三.封装OkHttp

public class HttpUtils {    private static final String TAG = "HttpUtils";    private static volatile HttpUtils instance;    Handler handler = new Handler();    private HttpUtils() {    }    public static HttpUtils getInstance() {        if (null == instance) {            synchronized (HttpUtils.class) {                if (instance == null) {                    instance = new HttpUtils();                }            }        }        return instance;    }    public void get(String url, Map<String, String> map, final CallBack callBack,                    final Class cls, final String tag) {        if (TextUtils.isEmpty(url)) {            return;        }        StringBuffer sb = new StringBuffer();        sb.append(url);        // 如果包含？说明是2.3类型        if (url.contains("?")) {            // 如果包含？并且？是最后一位，对应是2类型            if (url.indexOf("?") == url.length() - 1) {            } else {                // 如果包含？并且？不是最后一位，对应是3类型                sb.append("&");            }        } else {            // 不包含？，对应的1类型            sb.append("?");        }        // 遍历map集合进行拼接，拼接的形式是 key=value&        for (Map.Entry<String, String> entry : map.entrySet()) {            sb.append(entry.getKey())                    .append("=")                    .append(entry.getValue())                    .append("&");        }        // 如果存在&号，把最后一个&去掉        if (sb.indexOf("&") != -1) {            sb.deleteCharAt(sb.lastIndexOf("&"));        }        Log.e("-=-=-=-=-=-=-=url路径", sb.toString());        //        OkHttpClient client = new OkHttpClient();        Request build = new Request.Builder()                .get()                .url(sb.toString())                .build();        Call call = client.newCall(build);        call.enqueue(new Callback() {            @Override            public void onFailure(Call call, final IOException e) {                handler.post(new Runnable() {                    @Override                    public void run() {                        Log.e("-=-=-=-=-", e.getMessage());                        //通过自己传过来的回调接口对象回传回去                        callBack.Onfailed(tag, e);                    }                });            }            @Override            public void onResponse(final Call call, Response response) throws IOException {                final String string = response.body().string();                Log.e("---------------", string);                //请求成功之后做解析,通过自己回调的接口传值                handler.post(new Runnable() {                    @Override                    public void run() {                        Object o;                        if (TextUtils.isEmpty(string)) {                            o = null;                        } else {                            o = GsonUtils.getInstance().fromJson(string, cls);                        }                        Log.e("==========", o.toString());                        callBack.Onsuccess(tag, o);                    }                });            }        });    }    /**     * 封装的post请求     *     * @param url     * @param map     * @param callBack     * @param cls     */    public void post(String url, Map<String, String> map, final CallBack callBack, final Class cls, final String tag) {        OkHttpClient client = new OkHttpClient();        FormBody.Builder builder = new FormBody.Builder();        for (Map.Entry<String, String> entry : map.entrySet()) {            builder.add(entry.getKey(), entry.getValue());        }        FormBody body = builder.build();        final Request request = new Request.Builder()                .url(url)                .post(body)                .build();        Call call = client.newCall(request);        call.enqueue(new okhttp3.Callback() {            @Override            public void onFailure(final Call call, final IOException e) {                Log.e(TAG, "onFailure: " + e.getCause().getStackTrace() + e.getMessage());                handler.post(new Runnable() {                    @Override                    public void run() {                        //通过自己传过来的回调接口对象回传回去                        callBack.Onfailed(tag, e);                    }                });            }            @Override            public void onResponse(Call call, Response response) throws IOException {                final String result = response.body().string();                Log.i(TAG, "onResponse: " + result);                final Object o = GsonUtils.getInstance().fromJson(result, cls);                handler.post(new Runnable() {                    @Override                    public void run() {                        Object o;                        if (TextUtils.isEmpty(result)) {                            o = null;                        } else {                            o = GsonUtils.getInstance().fromJson(result, cls);                        }                        Log.e("==========", o.toString());                        callBack.Onsuccess(tag, o);                    }                });            }        });    }}

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