java 调用百度接口人脸识别

旧城等待， 2022-12-17 01:30 239阅读 0赞

项目需要做一个人脸识别打卡的功能,这几天花时间做了一下

# 1:首先进入\[百度人脸接口平台\] #

# ![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdndWFuZ25pdWJp_size_16_color_FFFFFF_t_70][]2:进入人脸识别 #

# ![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdndWFuZ25pdWJp_size_16_color_FFFFFF_t_70 1][]3:创建应用 #

# ![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdndWFuZ25pdWJp_size_16_color_FFFFFF_t_70 2][]4:创建完成后可以查看appId,API key,Secret Key #

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdndWFuZ25pdWJp_size_16_color_FFFFFF_t_70 3][]

# 5:把工具类放入项目中,首先是token类 #

package com.fandemi.utils.baidu;
    
    import lombok.extern.slf4j.Slf4j;
    import org.json.JSONObject;
    
    import java.io.BufferedReader;
    import java.io.InputStreamReader;
    import java.net.HttpURLConnection;
    import java.net.URL;
    import java.util.List;
    import java.util.Map;
    
    /**
     * 获取Access Token类
     */
    @Slf4j
    public class AuthToken {
        /**
         * 获取权限token
         *
         * @return 返回示例：
         * {
         * "access_token": "24.460da4889caad24cccdb1fea17221975.2592000.1491995545.282335-1234567",
         * "expires_in": 2592000
         * }
         */
        public static String getAuth() {
            // 官网获取的 API Key 更新为你注册的
            String clientId = "";
            // 官网获取的 Secret Key 更新为你注册的
            String clientSecret = "";
            return getAuth(clientId, clientSecret);
        }
    
        /**
         * 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 示例：
         * "24.460da4889caad24cccdb1fea17221975.2592000.1491995545.282335-1234567"
         */
        public 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 = new JSONObject(result);
                String access_token = jsonObject.getString("access_token");
                log.info("access_token:"+access_token);
                return access_token;
            } catch (Exception e) {
                System.err.printf("获取token失败！");
                e.printStackTrace(System.err);
            }
            return null;
        }
    }

# 6:Base64Util  工具类 #

package com.fandemi.utils.baidu;
    
    /**
     * Base64 工具类
     */
    public class Base64Util {
        private static final char last2byte = (char) Integer.parseInt("00000011", 2);
        private static final char last4byte = (char) Integer.parseInt("00001111", 2);
        private static final char last6byte = (char) Integer.parseInt("00111111", 2);
        private static final char lead6byte = (char) Integer.parseInt("11111100", 2);
        private static final char lead4byte = (char) Integer.parseInt("11110000", 2);
        private static final char lead2byte = (char) Integer.parseInt("11000000", 2);
        private static final char[] encodeTable = new char[]{'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/'};
    
        public Base64Util() {
        }
    
        public static String encode(byte[] from) {
            StringBuilder to = new StringBuilder((int) ((double) from.length * 1.34D) + 3);
            int num = 0;
            char currentByte = 0;
    
            int i;
            for (i = 0; i < from.length; ++i) {
                for (num %= 8; num < 8; num += 6) {
                    switch (num) {
                        case 0:
                            currentByte = (char) (from[i] & lead6byte);
                            currentByte = (char) (currentByte >>> 2);
                        case 1:
                        case 3:
                        case 5:
                        default:
                            break;
                        case 2:
                            currentByte = (char) (from[i] & last6byte);
                            break;
                        case 4:
                            currentByte = (char) (from[i] & last4byte);
                            currentByte = (char) (currentByte << 2);
                            if (i + 1 < from.length) {
                                currentByte = (char) (currentByte | (from[i + 1] & lead2byte) >>> 6);
                            }
                            break;
                        case 6:
                            currentByte = (char) (from[i] & last2byte);
                            currentByte = (char) (currentByte << 4);
                            if (i + 1 < from.length) {
                                currentByte = (char) (currentByte | (from[i + 1] & lead4byte) >>> 4);
                            }
                    }
    
                    to.append(encodeTable[currentByte]);
                }
            }
    
            if (to.length() % 4 != 0) {
                for (i = 4 - to.length() % 4; i > 0; --i) {
                    to.append("=");
                }
            }
    
            return to.toString();
        }
    }

# 7:FileUtil类 #

package com.fandemi.utils.baidu;
    
    import java.io.*;
    
    /**
     * 文件读取工具类
     */
    public class FileUtil {
    
        /**
         * 读取文件内容，作为字符串返回
         */
        public static String readFileAsString(String filePath) throws IOException {
            File file = new File(filePath);
            if (!file.exists()) {
                throw new FileNotFoundException(filePath);
            } 
    
            if (file.length() > 1024 * 1024 * 1024) {
                throw new IOException("File is too large");
            } 
    
            StringBuilder sb = new StringBuilder((int) (file.length()));
            // 创建字节输入流  
            FileInputStream fis = new FileInputStream(filePath);  
            // 创建一个长度为10240的Buffer
            byte[] bbuf = new byte[10240];  
            // 用于保存实际读取的字节数  
            int hasRead = 0;  
            while ( (hasRead = fis.read(bbuf)) > 0 ) {  
                sb.append(new String(bbuf, 0, hasRead));  
            }  
            fis.close();  
            return sb.toString();
        }
    
        /**
         * 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();
                }
            }
        }
    }

# 8:GsonUtils工具类 #

/*
     * Copyright (C) 2017 Baidu, Inc. All Rights Reserved.
     */
    package com.fandemi.utils.baidu;
    
    import com.google.gson.Gson;
    import com.google.gson.GsonBuilder;
    import com.google.gson.JsonParseException;
    
    import java.lang.reflect.Type;
    
    /**
     * Json工具类.
     */
    public class GsonUtils {
        private static Gson gson = new GsonBuilder().create();
    
        public static String toJson(Object value) {
            return gson.toJson(value);
        }
    
        public static <T> T fromJson(String json, Class<T> classOfT) throws JsonParseException {
            return gson.fromJson(json, classOfT);
        }
    
        public static <T> T fromJson(String json, Type typeOfT) throws JsonParseException {
            return (T) gson.fromJson(json, typeOfT);
        }
    }

# 9:HttpUtil工具类 #

package com.fandemi.utils.baidu;
    
    import java.io.BufferedReader;
    import java.io.DataOutputStream;
    import java.io.InputStreamReader;
    import java.net.HttpURLConnection;
    import java.net.URL;
    import java.util.List;
    import java.util.Map;
    
    /**
     * http 工具类
     */
    public class HttpUtil {
    
        public static String post(String requestUrl, String accessToken, String params)
                throws Exception {
            String contentType = "application/x-www-form-urlencoded";
            return HttpUtil.post(requestUrl, accessToken, contentType, params);
        }
    
        public static String post(String requestUrl, String accessToken, String contentType, String params)
                throws Exception {
            String encoding = "UTF-8";
            if (requestUrl.contains("nlp")) {
                encoding = "GBK";
            }
            return HttpUtil.post(requestUrl, accessToken, contentType, params, encoding);
        }
    
        public static String post(String requestUrl, String accessToken, String contentType, String params, String encoding)
                throws Exception {
            String url = requestUrl + "?access_token=" + accessToken;
            return HttpUtil.postGeneralUrl(url, contentType, params, encoding);
        }
    
        public static String postGeneralUrl(String generalUrl, String contentType, String params, String encoding)
                throws Exception {
            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", contentType);
            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.write(params.getBytes(encoding));
            out.flush();
            out.close();
    
            // 建立实际的连接
            connection.connect();
            // 获取所有响应头字段
            Map<String, List<String>> headers = connection.getHeaderFields();
            // 遍历所有的响应头字段
            for (String key : headers.keySet()) {
                System.err.println(key + "--->" + headers.get(key));
            }
            // 定义 BufferedReader输入流来读取URL的响应
            BufferedReader in = null;
            in = new BufferedReader(
                    new InputStreamReader(connection.getInputStream(), encoding));
            String result = "";
            String getLine;
            while ((getLine = in.readLine()) != null) {
                result += getLine;
            }
            in.close();
            System.err.println("result:" + result);
            return result;
        }
    }

# 10:编写controller类进行调用 #

package com.fandemi.controller.baidu;
    
    import com.alibaba.fastjson.JSON;
    import com.fandemi.common.Constants;
    import com.fandemi.service.fanStuProcess.IFanStuProcessService;
    import com.fandemi.service.fanStudent.IFanStudentService;
    import com.fandemi.utils.RedisUtils;
    import com.fandemi.utils.StringUtils;
    import com.fandemi.utils.baidu.*;
    import com.fandemi.utils.exception.ResultBean;
    import lombok.extern.slf4j.Slf4j;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.web.bind.annotation.PostMapping;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    import java.util.HashMap;
    import java.util.Map;
    import java.util.concurrent.TimeUnit;
    
    /**
     * 百度人脸识别
     */
    @RestController
    @RequestMapping("/api/face")
    @Slf4j
    public class FaceController {
        // 上传真实地址
        @Value("${taogou.imagesPath}")
        private String uploadFolder;
        @Autowired
        private RedisUtils redisUtils;
        @Autowired
        private IFanStuProcessService fanStuProcessService;
        @Autowired
        private IFanStudentService fanStudentService;
    
        /**
         * 人脸添加
         *
         * @return
         */
        @PostMapping("/faceAdd")
        public ResultBean add(String userId, String img) {
            // 请求url
            String url = "https://aip.baidubce.com/rest/2.0/face/v3/faceset/user/add";
            try {
                img = uploadFolder + "/" + img;//获取上传图片路径
                byte[] bytes = FileUtil.readFileByBytes(img);//图片生成bate数组
                String image = Base64Util.encode(bytes);//bate数组装维Base64
                Map<String, Object> map = new HashMap<>();
                map.put("image", image);
                map.put("group_id", "group_student");//设置组
                map.put("user_id", userId);//userId
                map.put("user_info", userId);
                map.put("liveness_control", "NORMAL");
                map.put("image_type", "BASE64");
                map.put("quality_control", "LOW");
                String param = GsonUtils.toJson(map);
                // 注意这里仅为了简化编码每一次请求都去获取access_token，线上环境access_token有过期时间， 客户端可自行缓存，过期后重新获取。
                String accessToken = redisUtils.get(Constants.REDIS_ACCESS_TOKEN);
                if (StringUtils.isEmpty(accessToken)) {
                    accessToken = AuthToken.getAuth();
                    redisUtils.set(Constants.REDIS_ACCESS_TOKEN, accessToken);
                    redisUtils.expire(Constants.REDIS_ACCESS_TOKEN, 3, TimeUnit.DAYS);
                }
                String result = HttpUtil.post(url, accessToken, "application/json", param);
                log.info("添加人脸信息返回结果:"+result);
                Map<String,Object> data = JSON.parseObject(result);
                Integer error_code = Integer.parseInt(String.valueOf(data.get("error_code")));
                if (error_code==110){
                    log.info("accessToken过期,重新获取accessToken");
                    accessToken = AuthToken.getAuth();
                    redisUtils.set(Constants.REDIS_ACCESS_TOKEN, accessToken);
                    redisUtils.expire(Constants.REDIS_ACCESS_TOKEN, 3, TimeUnit.DAYS);
                    log.info("accessToken获取完毕,重新发起添加人脸请求");
                    result = HttpUtil.post(url, accessToken, "application/json", param);
                    log.info("添加人脸信息返回结果:"+result);
                    data = JSON.parseObject(result);
                    error_code = Integer.parseInt(String.valueOf(data.get("error_code")));
                }
                if (error_code==0){
                    log.info("人脸添加成功!更新学员信息");
                    //处理业务逻辑
                    return ResultBean.successOrFail("200","操作成功","");
                }
                return ResultBean.successOrFail("500","操作失败","");
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }
    
        /**
         * 人脸搜索 可上课打卡(学员端)
         * @param userId
         * @param img
         * @return
         */
        @PostMapping("/faceSearch")
        public ResultBean faceSearch(String userId, String img,String layId,String processId) {
            // 请求url
            String url = "https://aip.baidubce.com/rest/2.0/face/v3/search";
            try {
                img = uploadFolder + "/" + img;//获取上传图片路径
                byte[] bytes = FileUtil.readFileByBytes(img);//图片生成bate数组
                String image = Base64Util.encode(bytes);//bate数组装维Base64
                Map<String, Object> map = new HashMap<>();
                map.put("image", image);
                map.put("liveness_control", "NORMAL");
                map.put("group_id_list", "group_student");
                map.put("image_type", "BASE64");
                map.put("quality_control", "LOW");
    
                String param = GsonUtils.toJson(map);
    
                // 注意这里仅为了简化编码每一次请求都去获取access_token，线上环境access_token有过期时间， 客户端可自行缓存，过期后重新获取。
                String accessToken = redisUtils.get(Constants.REDIS_ACCESS_TOKEN);
                if (StringUtils.isEmpty(accessToken)) {
                    accessToken = AuthToken.getAuth();
                    redisUtils.set(Constants.REDIS_ACCESS_TOKEN, accessToken);
                    redisUtils.expire(Constants.REDIS_ACCESS_TOKEN, 3, TimeUnit.DAYS);
                }
                String result = HttpUtil.post(url, accessToken, "application/json", param);
                log.info("人脸搜索返回结果:"+result);
                Map<String,Object> data = JSON.parseObject(result);//返回结果转为map
                Integer error_code = Integer.parseInt(String.valueOf(data.get("error_code")));//得到返回码
                if (error_code==110){
                    log.info("accessToken过期,重新获取accessToken");
                    accessToken = AuthToken.getAuth();
                    redisUtils.set(Constants.REDIS_ACCESS_TOKEN, accessToken);
                    redisUtils.expire(Constants.REDIS_ACCESS_TOKEN, 3, TimeUnit.DAYS);
                    log.info("accessToken获取完毕,重新发起人脸搜索请求");
                    result = HttpUtil.post(url, accessToken, "application/json", param);
                    log.info("人脸搜索信息返回结果:"+result);
                    data = JSON.parseObject(result);
                    error_code = Integer.parseInt(String.valueOf(data.get("error_code")));
                }
                if (error_code==0){
                    //表示对比完成(不一定对比成功 因为可能不是本人打卡 通过score和user_id判断是否是本人打卡)
                    Double score = Double.parseDouble(String.valueOf(data.get("score")));//得到分数
                    String user_id = (String) data.get("user_id");
                    if (score>80 && userId.equals(user_id)){
                        //大于80分 并且userid相同 认为是本人打卡
                        //处理业务逻辑
                        return resultBean;
                    }
                }
                return ResultBean.successOrFail("500","操作失败","");
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }
    
        /**
         * 更新人脸信息
         * @return
         */
        @PostMapping("/faceUpdate")
        public ResultBean faceUpdate(String userId,String img) {
            // 请求url
            String url = "https://aip.baidubce.com/rest/2.0/face/v3/faceset/user/update";
            try {
                img = uploadFolder + "/" + img;//获取上传图片路径
                byte[] bytes = FileUtil.readFileByBytes(img);//图片生成bate数组
                String image = Base64Util.encode(bytes);//bate数组装维Base64
                Map<String, Object> map = new HashMap<>();
                map.put("image", image);
                map.put("group_id", "group_student");
                map.put("user_id", userId);
                map.put("user_info", userId);
                map.put("liveness_control", "NORMAL");
                map.put("image_type", "BASE64");
                map.put("quality_control", "LOW");
    
                String param = GsonUtils.toJson(map);
    
                // 注意这里仅为了简化编码每一次请求都去获取access_token，线上环境access_token有过期时间， 客户端可自行缓存，过期后重新获取。
                String accessToken = redisUtils.get(Constants.REDIS_ACCESS_TOKEN);
                if (StringUtils.isEmpty(accessToken)) {
                    accessToken = AuthToken.getAuth();
                    redisUtils.set(Constants.REDIS_ACCESS_TOKEN, accessToken);
                    redisUtils.expire(Constants.REDIS_ACCESS_TOKEN, 3, TimeUnit.DAYS);
                }
                String result = HttpUtil.post(url, accessToken, "application/json", param);
                Map<String,Object> data = JSON.parseObject(result);
                Integer error_code = Integer.parseInt(String.valueOf(data.get("error_code")));//得到返回码
                if (error_code==110){
                    //accessToken 过期 重新获取
                    accessToken = AuthToken.getAuth();
                    redisUtils.set(Constants.REDIS_ACCESS_TOKEN, accessToken);
                    redisUtils.expire(Constants.REDIS_ACCESS_TOKEN, 3, TimeUnit.DAYS);
                }
                result = HttpUtil.post(url, accessToken, "application/json", param);
                data = JSON.parseObject(result);
                error_code = Integer.parseInt(String.valueOf(data.get("error_code")));//得到返回码
                if (error_code==0){
                    //处理业务逻辑
                    return ResultBean.successOrFail("200","操作成功","");
                }
                return ResultBean.successOrFail("500","操作失败","");
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }
    }

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