分享一个免费的OCR图片文字识别接口

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我是靠谱客的博主可爱猫咪，这篇文章主要介绍分享一个免费的OCR图片文字识别接口，现在分享给大家，希望可以做个参考。

此接口为每天100次免费，应对平时自己调试使用也够了~
亲测准确度还不错。

请求地址

https://api.itapi.cn/api/ocr/v2

请求参数

参数名	参数说明
key	用户请求密钥，可在密钥管理页面申请
data	图片base64编码数据或网络图片URL

请求结果参数说明

参数名	参数说明
code	状态码
msg	状态信息
debug	错误信息
exec_time	系统执行时间
user_ip	你的ip
data	请求结果数据集
data.text	识别到的完整文本内容（注意换行符）
data.text_list[]	识别到的每行文本结果数组

POST同时支持图片url和base64数据提交，get仅支持图片url提交。

代码案例

复制代码

/**
     * 图片转Base64
     */
    public static String getImageBase() throws Exception {
        byte[] data = null;
        // 读取图片字节数组
        try {
            InputStream in = new FileInputStream("本地文件路径");
            data = new byte[in.available()];
            in.read(data);
            in.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        // 对字节数组Base64编码
        BASE64Encoder encoder = new BASE64Encoder();
        return encoder.encode(data);// 返回Base64编码过的字节数组字符串
    }

/**
     * 向指定 URL 发送POST方法的请求
     */
    public static String sendPost() throws Exception {
        Map<String, String> paramMap = new HashMap<String, String>();
        paramMap.put("key", "用户请求秘钥");
        paramMap.put("data", getImageBase());
        URL url = new URL("https://api.itapi.cn/api/ocr/v2");
        StringBuilder postData = new StringBuilder();
        //接口不支持json传参，处理参数
        for (Map.Entry<String,String> param : paramMap.entrySet()) {
            if (postData.length() != 0) postData.append('&');
            postData.append(URLEncoder.encode(param.getKey(), "UTF-8"));
            postData.append('=');
            postData.append(URLEncoder.encode(String.valueOf(param.getValue()), "UTF-8"));
        }
        byte[] postDataBytes = postData.toString().getBytes("UTF-8");

HttpURLConnection conn = (HttpURLConnection)url.openConnection();
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        conn.setRequestProperty("Content-Length", String.valueOf(postDataBytes.length));
        conn.setDoOutput(true);
        conn.getOutputStream().write(postDataBytes);

Reader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));

StringBuilder sb = new StringBuilder();
        for (int c; (c = in.read()) >= 0;)
            sb.append((char)c);
        String response = sb.toString();
        return response;
    }

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   /**
     * 图片转Base64
     */
    public static String getImageBase() throws Exception {
        byte[] data = null;
        // 读取图片字节数组
        try {
            InputStream in = new FileInputStream("本地文件路径");
            data = new byte[in.available()];
            in.read(data);
            in.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        // 对字节数组Base64编码
        BASE64Encoder encoder = new BASE64Encoder();
        return encoder.encode(data);// 返回Base64编码过的字节数组字符串
    }

    /**
     * 向指定 URL 发送POST方法的请求
     */
    public static String sendPost() throws Exception {
        Map<String, String> paramMap = new HashMap<String, String>();
        paramMap.put("key", "用户请求秘钥");
        paramMap.put("data", getImageBase());
        URL url = new URL("https://api.itapi.cn/api/ocr/v2");
        StringBuilder postData = new StringBuilder();
        //接口不支持json传参，处理参数
        for (Map.Entry<String,String> param : paramMap.entrySet()) {
            if (postData.length() != 0) postData.append('&');
            postData.append(URLEncoder.encode(param.getKey(), "UTF-8"));
            postData.append('=');
            postData.append(URLEncoder.encode(String.valueOf(param.getValue()), "UTF-8"));
        }
        byte[] postDataBytes = postData.toString().getBytes("UTF-8");

        HttpURLConnection conn = (HttpURLConnection)url.openConnection();
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        conn.setRequestProperty("Content-Length", String.valueOf(postDataBytes.length));
        conn.setDoOutput(true);
        conn.getOutputStream().write(postDataBytes);

        Reader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));

        StringBuilder sb = new StringBuilder();
        for (int c; (c = in.read()) >= 0;)
            sb.append((char)c);
        String response = sb.toString();
        return response;
    }