okhttp 公共类

http://blog.csdn.net/lmj623565791/article/details/47911083
参照了鸿洋_大神的代码重写了自己需要的方法

    public final static int CONNECT_TIMEOUT = 60;public final static int READ_TIMEOUT = 100;public final static int WRITE_TIMEOUT = 60;private static final OkHttpClient client = new OkHttpClient();//private static final Handler handler = new Handler();public static final MediaType JSON = MediaType.parse("application/json; charset=utf-8");private static Handler handler = new Handler();static {    client.newBuilder().readTimeout(READ_TIMEOUT, TimeUnit.SECONDS); // 读取超时    client.newBuilder().writeTimeout(WRITE_TIMEOUT, TimeUnit.SECONDS); // 写入超时    client.newBuilder().connectTimeout(CONNECT_TIMEOUT, TimeUnit.SECONDS); // 连接超时}/** * 同步get * * @param address * @return * @throws IOException */public static String syncGet(String address) throws IOException {    Request request = new Request.Builder()            .get()            .url(address)            .build();    Response response = client.newCall(request).execute();    if (response.isSuccessful()) {        return response.body().string();    } else {        throw new IOException("Unexpected code " + response);    }}/** * 同步post * * @param address * @param jsonStr * @return * @throws IOException */public static String syncPost(String address, String jsonStr) throws IOException {    RequestBody body = RequestBody.create(JSON, jsonStr);    Request request = new Request.Builder()            .post(body)            .url(address)            .build();    Response response = client.newCall(request).execute();    if (response.isSuccessful()) {        return response.body().string();    } else {        throw new IOException("Unexpected code " + response);    }}/** * 异步get * * @param address * @param callback */public static void asynGet(String address,  Callback callback) {    Request request = new Request.Builder()            .get()            .url(address)            .build();    client.newCall(request).enqueue(callback);}/** * 异步post * * @param address * @param jsonStr * @param callback */public static void asynPost(String address, String jsonStr, Callback callback) {    RequestBody body = RequestBody.create(JSON, jsonStr);    Request request = new Request.Builder()            .post(body)            .url(address)            .build();    client.newCall(request).enqueue(callback);}/** * 异步get 可以访问主线程 * @param address * @param callback */public static void asynGet(String address, OkhttpUtil.ResultCallback callback) {    Request request = new Request.Builder()            .get()            .url(address)            .build();    deliveryResult(request, callback);}/** * 异步post 可以访问主线程 * @param address * @param jsonStr * @param callback */public static void asynPost(String address, String jsonStr, ResultCallback callback) {    RequestBody body = RequestBody.create(JSON, jsonStr);    Request request = new Request.Builder()            .post(body)            .url(address)            .build();    deliveryResult(request, callback);}private static void deliveryResult(final Request request, final ResultCallback callback) {    client.newCall(request).enqueue(new Callback() {        @Override        public void onFailure(okhttp3.Call call, IOException e) {            sendFailedStringCallback(request, e, callback);        }        @Override        public void onResponse(okhttp3.Call call, Response response) throws IOException {            sendSuccessResultCallback(response.body().string() ,callback);        }    });}private static void sendFailedStringCallback(final Request request, final Exception e, final ResultCallback callback){    handler.post(new Runnable()    {        @Override        public void run()        {            if (callback != null)                callback.onError(request, e);        }    });}private static void sendSuccessResultCallback(final Object object, final ResultCallback callback){    handler.post(new Runnable()    {        @Override        public void run()        {            if (callback != null)            {                callback.onResponse(object);            }        }    });}public static abstract class ResultCallback<T>{    public abstract void onError(Request request, Exception e);    public abstract void onResponse(T response);}

调用：

// 可以更新线程post请求OkhttpUtil.asynPost("http://localhost:9090/TomcatTest/test", "{'name':'shaomiao'}", new OkhttpUtil.ResultCallback<String>() {    @Override    public void onError(Request request, Exception e) {        System.out.println("错误了");    }    @Override    public void onResponse(String response) {        System.out.println("返回了");    }});// 可以更新线程get请求OkhttpUtil.asynGet("http://localhost:9090/TomcatTest/test", new OkhttpUtil.ResultCallback() {    @Override    public void onError(Request request, Exception e) {        Toast.makeText(MainActivity.this, "错误", Toast.LENGTH_SHORT).show();    }    @Override    public void onResponse(Object response) {        Toast.makeText(MainActivity.this, response.toString(), Toast.LENGTH_SHORT).show();    }});