Arbitrate-Backend/ruoyi-system/src/main/java/com/ruoyi/wisdomarbitrate/utils/OCRUtils.java

package com.ruoyi.wisdomarbitrate.utils;

import com.ruoyi.common.constant.Constants;
import com.tencentcloudapi.bsca.v20210811.models.LicenseSummary;
import com.tencentcloudapi.common.Credential;
import com.tencentcloudapi.common.exception.TencentCloudSDKException;
import com.tencentcloudapi.common.profile.ClientProfile;
import com.tencentcloudapi.common.profile.HttpProfile;
import com.tencentcloudapi.ocr.v20181119.OcrClient;
import com.tencentcloudapi.ocr.v20181119.models.SmartStructuralOCRV2Request;
import com.tencentcloudapi.ocr.v20181119.models.SmartStructuralOCRV2Response;
import org.json.JSONArray;
import org.json.JSONObject;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Base64;
import java.util.List;

public class OCRUtils {
    //API的SecretId
    private static final String SECRET_ID = "AKIDeEf2A8uX1HSainvvnXAc3X9ZlhtyvkMp";
    //API的SecretKey
    private static final String SECRET_KEY = "QjphKo8zkHZigT8j9PVtFPJyfIvO3d6V";
    // 仲裁申请书识别字段
    private static final String[] applicantName = {"申请人", "统一社会信用代码", "负责人", "住所", "联系地址"
            , "委托代理人", "联系电话", "电子邮件", "被申请人", "居民身份证号码", "仲裁请求", "事实和理由"};
    // 贷款合同识别字段
    private static final String[] contractName = {
            "合同编号","甲方(贷款人)" ,"或委托代理人签字:","本合同的初始贷款年利率为","乙方确认有效的电子信箱地址为"};
    // 调解协议识别字段
    private static final String[] accordName = {"金融消费纠纷基本情况","经调解，双方自愿达成如下协议"};
    // 授权委托书识别字段
    private static final String[] powerAttorneyName = {"职务"};


    /**
     * pdf识别成文字
     * @param imageBase64
     * @param pageNumber
     * @param type pdf类型
     * @return
     */
    public static String pdfIdentifyText(String imageBase64, Integer pageNumber,String type) {
        try {
            // 实例化一个认证对象，入参需要传入腾讯云账户 SecretId 和 SecretKey，此处还需注意密钥对的保密
            // 代码泄露可能会导致 SecretId 和 SecretKey 泄露，并威胁账号下所有资源的安全性。以下代码示例仅供参考，建议采用更安全的方式来使用密钥，请参见：https://cloud.tencent.com/document/product/1278/85305
            // 密钥可前往官网控制台 https://console.cloud.tencent.com/cam/capi 进行获取
            Credential cred = new Credential(SECRET_ID, SECRET_KEY);
            // 实例化一个http选项，可选的，没有特殊需求可以跳过
            HttpProfile httpProfile = new HttpProfile();
            httpProfile.setEndpoint("ocr.tencentcloudapi.com");
            // 实例化一个client选项，可选的，没有特殊需求可以跳过
            ClientProfile clientProfile = new ClientProfile();
            clientProfile.setHttpProfile(httpProfile);
            // 实例化要请求产品的client对象,clientProfile是可选的
            OcrClient client = new OcrClient(cred, "ap-beijing", clientProfile);
            // 实例化一个请求对象,每个接口都会对应一个request对象
            SmartStructuralOCRV2Request req = new SmartStructuralOCRV2Request();
            req.setImageBase64(imageBase64);
            req.setIsPdf(true);
            req.setPdfPageNumber(pageNumber.longValue());
            if(type.contains("申请书")){
                req.setItemNames(applicantName);
            }else if(type.contains("调解协议")){
                req.setItemNames(accordName);
            }else if(type.contains("合同")){
                req.setItemNames(contractName);
            }else if(type.contains("授权委托书")){
                req.setItemNames(powerAttorneyName);
            }

            // 返回的resp是一个SmartStructuralOCRV2Response的实例，与请求对象对应
            SmartStructuralOCRV2Response resp = client.SmartStructuralOCRV2(req);
            // 输出json格式的字符串回包
            System.out.println(SmartStructuralOCRV2Response.toJsonString(resp));
            //解析数据
            String s = SmartStructuralOCRV2Response.toJsonString(resp);
            // 解析JSON数据
            JSONObject jsonObject = new JSONObject(s);
            JSONArray structuralList = jsonObject.getJSONArray("StructuralList");
            // 遍历StructuralList中的Groups，获取Key对应的AutoName和Value对应的AutoConten
            StringBuilder stringBuilder = new StringBuilder(); // 创建一个StringBuilder对象
            for (int i = 0; i < structuralList.length(); i++) {
                JSONArray groups = structuralList.getJSONObject(i).getJSONArray("Groups");
                for (int j = 0; j < groups.length(); j++) {
                    JSONArray lines = groups.getJSONObject(j).getJSONArray("Lines");
                    for (int k = 0; k < lines.length(); k++) {
                        JSONObject line = lines.getJSONObject(k);
                        JSONObject key = line.getJSONObject("Key");
                        JSONObject value = line.getJSONObject("Value");
                        String autoName = key.getString("AutoName");
                        String autoContent = value.getString("AutoContent");
                        String text = autoName + Constants.PDFSTR + autoContent;
                        if (stringBuilder.length() > 0) {
                            stringBuilder.append(Constants.BR); // 在已有内容的情况下添加逗号分隔符
                        }
                        stringBuilder.append(text); // 拼接当前的字符串
                    }
                }
            }
            return stringBuilder.toString(); // 获取最终的拼接结果
        } catch (TencentCloudSDKException e) {
            System.out.println(e.toString());
        }
        return null;
    }
    public static String pdfConvertBase64(String pathUrl){
        try {
            File file = new File(pathUrl);
            FileInputStream fileInputStream = new FileInputStream(file);
            byte[] fileBytes = new byte[(int) file.length()];
            fileInputStream.read(fileBytes);
            fileInputStream.close();
            // 将字节数组转换为Base64值
            return Base64.getEncoder().encodeToString(fileBytes);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }

}