百度OCR接口识别身份证信息

步骤:

1. 创建OCR应用,获取API Key和Secret Key;

2. 查看接口文档,文字识别OCR (baidu.com)

3. 编写代码;

代码如下:

1. 获取token

    /**
     * 获取API访问token
     * 该token有一定的有效期,需要自行管理,当失效时需重新获取.
     * @param ak - 百度云官网获取的 API Key
     * @param sk - 百度云官网获取的 Securet Key
     * @return assess_token
     */
    private static String getAuth(String ak, String sk) {
        // 获取token地址
        String authHost = "https://aip.baidubce.com/oauth/2.0/token?";
        String getAccessTokenUrl = authHost
                // 1. grant_type为固定参数
                + "grant_type=client_credentials"
                // 2. 官网获取的 API Key
                + "&client_id=" + ak
                // 3. 官网获取的 Secret Key
                + "&client_secret=" + sk;
        try {
            URL realUrl = new URL(getAccessTokenUrl);
            // 打开和URL之间的连接
            HttpURLConnection connection = (HttpURLConnection) realUrl.openConnection();
            connection.setRequestMethod("GET");
            connection.connect();
            // 获取所有响应头字段
            Map<String, List<String>> map = connection.getHeaderFields();
            // 遍历所有的响应头字段
            for (String key : map.keySet()) {
                System.err.println(key + "--->" + map.get(key));
            }
            // 定义 BufferedReader输入流来读取URL的响应
            BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String result = "";
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
            /**
             * 返回结果示例
             */
            System.err.println("result:" + result);
            JSONObject jsonObject = JSONObject.parseObject(result);
            String access_token = jsonObject.getString("access_token");
            return access_token;
        } catch (Exception e) {
            System.err.printf("获取token失败!");
            e.printStackTrace(System.err);
        }
        return null;
    }

 

2. 拿上token调用ocr接口

        String access_token = getAuth("API Key", "Secret Key");
        try {
// filePath为本地图片路径 byte[] imgData = FileUtils.readFileByBytes(filePath); String imgStr = new String(Base64.encodeBase64(imgData)); String url = "https://aip.baidubce.com/rest/2.0/ocr/v1/idcard"; CloseableHttpClient httpclient = HttpClients.createDefault(); try { HttpPost httppost = new HttpPost(url); StringBody accessToken = new StringBody(access_token, ContentType.TEXT_PLAIN); StringBody image = new StringBody(imgStr, ContentType.TEXT_PLAIN); StringBody id_card_side = new StringBody("front", ContentType.TEXT_PLAIN); HttpEntity reqEntity = MultipartEntityBuilder.create() .addPart("access_token",accessToken) .addPart("image",image) .addPart("id_card_side",id_card_side) .build(); httppost.setEntity(reqEntity); System.out.println("executing request " + httppost.getRequestLine()); CloseableHttpResponse response = httpclient.execute(httppost); try { int statusCode = response.getStatusLine().getStatusCode(); HttpEntity resEntity = response.getEntity(); if (200 == statusCode && resEntity != null) { logger.info("Response content length: {}", resEntity.getContentLength()); logger.info("Response content length: {}", resEntity.getContent()); String result = EntityUtils.toString(resEntity); //打印获取到的返回值 logger.info("Response content: {}", result); JSONObject jsonObject = JSONObject.parseObject(result); JSONObject wordsResult = jsonObject.getJSONObject("words_result"); String name = wordsResult.getJSONObject("姓名").getString("words"); String nation = wordsResult.getJSONObject("民族").getString("words"); String address = wordsResult.getJSONObject("住址").getString("words"); String idCardNo = wordsResult.getJSONObject("公民身份号码").getString("words"); String birthDate = wordsResult.getJSONObject("出生").getString("words"); String sex = wordsResult.getJSONObject("性别").getString("words"); } EntityUtils.consume(resEntity); } finally { response.close(); } } finally { httpclient.close(); } } catch (Exception e) { MsgAlert.alert("系统发生错误,请联系管理员!"); }

 

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