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private void test(){        //yibuGet();       new Thread(new Runnable() {           @Override           public void run() {               //tongbuGet();               yibuPost();           }       }).start();    }    private void yibuGet(){        String url = "https://www.wanandroid.com//hotkey/json";        OkHttpClient okHttpClient = new OkHttpClient();        final Request request = new Request.Builder()                .url(url)                .get()//默认就是GET请求，可以不写                .build();        Call call = okHttpClient.newCall(request);        call.enqueue(new Callback() {            @Override            public void onFailure(Call call, IOException e) {                Log.d("tww", "onFailure: ");            }            @Override            public void onResponse(Call call, Response response) throws IOException {                Log.d("tww", "onResponse: " + response.body().string());            }        });    }    private void tongbuGet(){        String url = "https://www.wanandroid.com//hotkey/json";        OkHttpClient okHttpClient = new OkHttpClient();        Request request = new Request.Builder().url(url).get().build();        Call call = okHttpClient.newCall(request);        try {           Response response  =  call.execute();           if(response.isSuccessful()){               Log.d("tww", "onResponse: " + response.body().string());           }else {               Log.d("tww", "onFailure: ");           }        } catch (IOException e) {            e.printStackTrace();        }    }    //异步    private void yibuPost(){        String username ="13245941";        String pwd = "tww";        String url ="https://www.wanandroid.com/user/login";        OkHttpClient okHttpClient = new OkHttpClient();        RequestBody formBody = new FormBody.Builder().add(username,pwd).build();        Request request = new Request.Builder().url(url).post(formBody).build();        Call call = okHttpClient.newCall(request);        call.enqueue(new Callback() {            @Override            public void onFailure(Call call, IOException e) {                Log.d("tww", "onFailure: ");            }            @Override            public void onResponse(Call call, Response response) throws IOException {                Log.d("tww", "onSuccess: "+response.body().string());            }        });    }

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