java接入腾讯云人脸识别服务

javaCopy codeimport java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Base64;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClientBuilder;
import org.json.JSONObject;

public class FaceRecognitionService {

    private static final String API_SECRET_KEY = "your-api-secret-key";
    private static final String API_SECRET_ID = "your-api-secret-id";
    private static final String API_ENDPOINT = "https://iai.tencentcloudapi.com";

    public static JSONObject recognizeFace(File imageFile) throws IOException {
        String imageBase64 = getImageBase64(imageFile);
        String requestBody = getRequestBody(imageBase64);
        HttpEntity httpEntity = new StringEntity(requestBody);

        HttpClient httpClient = HttpClientBuilder.create().build();
        HttpPost httpPost = new HttpPost(API_ENDPOINT);
        httpPost.addHeader("Content-Type", "application/json");
        httpPost.addHeader("Authorization", getAuthorizationHeader());
        httpPost.setEntity(httpEntity);

        HttpResponse httpResponse = httpClient.execute(httpPost);
        String responseString = new String(httpResponse.getEntity().getContent().readAllBytes());

        return new JSONObject(responseString);
    }

    private static String getImageBase64(File imageFile) throws IOException {
        byte[] imageBytes = Files.readAllBytes(Paths.get(imageFile.toURI()));
        return Base64.getEncoder().encodeToString(imageBytes);
    }

    private static String getRequestBody(String imageBase64) {
        JSONObject jsonObject = new JSONObject();
        jsonObject.put("Image", imageBase64);
        jsonObject.put("ImageType", "BASE64");
        jsonObject.put("FaceMatchThreshold", 80);

        JSONObject requestObject = new JSONObject();
        requestObject.put("Action", "DetectFace");
        requestObject.put("Version", "2018-03-01");
        requestObject.put("Region", "ap-guangzhou");
        requestObject.put("RequestClient", "Java SDK");
        requestObject.put("Params", jsonObject);

        return requestObject.toString();
    }

    private static String getAuthorizationHeader() {
        long currentTime = System.currentTimeMillis() / 1000L;
        long expiredTime = currentTime + 86400L;

        String originalString = String.format("x-cos-security-token=;x-cos-request-id=;q-sign-algorithm=sha1;q-ak=%s;q-sign-time=%d;%d;q-key-time=%d;%d", 
                API_SECRET_ID, currentTime, expiredTime, currentTime, expiredTime);
        String signature = getSignature(originalString);

        return String.format("q-sign-algorithm=sha1;q-ak=%s;q-sign-time=%d;%d;q-key-time=%d;%d;q-signature=%s",
                API_SECRET_ID, currentTime, expiredTime, currentTime, expiredTime, signature);
    }

    private static String getSignature(String originalString) {
        String signKey = API_SECRET_KEY + "&";
        return HMACSHA1.getSignature(originalString, signKey);
    }
}

class HMACSHA1 {

    private static final String HMAC_SHA1_ALGORITHM = "HmacSHA1";

    public static String getSignature(String data, String key) {
        try {
            byte[] keyBytes = key.getBytes("UTF-8");
            SecretKeySpec signingKey = new SecretKeySpec(keyBytes, HMAC_SHA1_ALGORITHM);
            Mac mac = Mac.getInstance(HMAC_SHA1_ALGORITHM);
            mac.init(signingKey);
            byte[] rawHmac = mac .doFinal(data.getBytes("UTF-8"));
        return Base64.getEncoder().encodeToString(rawHmac);
    } catch (Exception e) {
        throw new RuntimeException("Failed to generate HMAC-SHA1 signature.", e);
    }
}