/**
         * 请求百度API接口，进行获取数据
         *
         * @param filePath
         */
        private void checkData(String filePath) {

            try {

                //把图片文件转换为字节数组
                byte[] imgData = FileUtil.readFileByBytes(filePath);

                //对字节数组进行Base64编码
                String imgStr = Base64Util.encode(imgData);
                final String params = URLEncoder.encode("image", "UTF-8") + "=" + URLEncoder.encode(imgStr, "UTF-8");

                RequestParams entiry = new RequestParams(ConstantValue.BAIDU_TOKEN_URL);

                x.http().get(entiry, new Callback.CommonCallback() {
                    @Override
                    public void onSuccess(final String result) {
                        Gson gson = new Gson();
                        TokenInfo tokenInfo = gson.fromJson(result, TokenInfo.class);

                        final String access_token = tokenInfo.getAccess_token();

                        new Thread() {
                            public void run() {

//
                                public static final String BAIDU_TOKEN_URL
                                        = "https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials&client_id=" + 你在百度控制台创建的AK+ "&client_secret=" +
                                        你在百度控制台创建的SK;

                                String resultStr = HttpUtil.post(ConstantValue.BAIDU_INTER_URL, access_token, params);
                                Log.e("MainActivity", "MainActivity onSuccess()" + resultStr);
                                Message msg = Message.obtain();
                                msg.obj = resultStr;
                                msg.what = PRESER_IMG_OK;
                                handler.sendMessage(msg);
                            }
                        }.start();
                    }
                    @Override
                    public void onError(Throwable ex, boolean isOnCallback) {

                    }
                    @Override
                    public void onCancelled(CancelledException cex) {
                    }
                    @Override
                    public void onFinished() {
                    }
                });
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

 

public static File getSaveFile(Context context) {
        File file = new File(context.getFilesDir(), "pic.jpg");
        return file;
    }

    /**
     * 根据文件路径读取byte[] 数组
     */
    public static byte[] readFileByBytes(String filePath) throws IOException {
        File file = new File(filePath);
        if (!file.exists()) {
            throw new FileNotFoundException(filePath);
        } else {
            ByteArrayOutputStream bos = new ByteArrayOutputStream((int) file.length());
            BufferedInputStream in = null;

            try {
                in = new BufferedInputStream(new FileInputStream(file));
                short bufSize = 1024;
                byte[] buffer = new byte[bufSize];
                int len1;
                while (-1 != (len1 = in.read(buffer, 0, bufSize))) {
                    bos.write(buffer, 0, len1);
                }

                byte[] var7 = bos.toByteArray();
                return var7;
            } finally {
                try {
                    if (in != null) {
                        in.close();
                    }
                } catch (IOException var14) {
                    var14.printStackTrace();
                }

                bos.close();
            }
        }
    }
}

 

 

/**
 * http 工具类
 */
public class HttpUtil {

    public static String post(String requestUrl, String accessToken, String params)  {
        try {
            String generalUrl = requestUrl + "?access_token=" + accessToken;
            URL url = new URL(generalUrl);
            // 打开和URL之间的连接
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("POST");
            // 设置通用的请求属性
            connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            connection.setRequestProperty("Connection", "Keep-Alive");
            connection.setUseCaches(false);
            connection.setDoOutput(true);
            connection.setDoInput(true);

            // 得到请求的输出流对象
            DataOutputStream out = new DataOutputStream(connection.getOutputStream());
            out.writeBytes(params);
            out.flush();
            out.close();

            // 建立实际的连接
            connection.connect();
            // 获取所有响应头字段
            Map> headers = connection.getHeaderFields();
            // 遍历所有的响应头字段
            for (String key : headers.keySet()) {
                System.out.println(key + "--->" + headers.get(key));
            }
            // 定义 BufferedReader输入流来读取URL的响应
            BufferedReader in = null;
            if (requestUrl.contains("nlp"))
                in = new BufferedReader(new InputStreamReader(connection.getInputStream(), "GBK"));
            else
                in = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
            String result = "";
            String getLine;
            while ((getLine = in.readLine()) != null) {
                result += getLine;
            }
            in.close();
            System.out.println("result:" + result);
            return result;
        }catch (Exception e){
            throw new RuntimeException(e);
        }
    }
}