调用腾讯优图开放平台进行人脸识别-Java调用API实现

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腾讯产品文档

直接234.

第一步：鉴权服务技术方案

Java代码实现如下

1. import java.util.Date;
2. import com.baidu.aip.util.Base64Util;
3. /**
4. * 获取Authorization
5. * @author 小帅丶
6. * @类名称  Sign
7. * @remark
8. * @date  2017-8-18
9. */
10. public class Sign {
11. /**
12. * Authorization方法
13. * @param userQQ 开发者创建应用时的QQ号
14. * @param AppID 开发者创建应用后的AppID
15. * @param SecretID 开发者创建应用后的SecretID
16. * @param SecretKey 开发者创建应用后的SecretKey
17. * @return sign
18. * @throws Exception
19. */
20. public static String getSign(String userQQ,String AppID,String SecretID,String SecretKey) throws Exception{
21. long tnowTimes = new Date().getTime()/1000;
22. long enowTimes = tnowTimes+2592000;
23. String rRandomNum = HMACSHA1.genRandomNum(10);
24. String param = "u=" + userQQ + "&a=" + AppID + "&k=" + SecretID + "&e="
25. + enowTimes + "&t=" + tnowTimes + "&r=" + rRandomNum + "&f=";
26. byte [] hmacSign = HMACSHA1.getSignature(param, SecretKey);
27. byte[] all = new byte[hmacSign.length+param.getBytes().length];
28. System.arraycopy(hmacSign, 0, all, 0, hmacSign.length);
29. System.arraycopy(param.getBytes(), 0, all, hmacSign.length, param.getBytes().length);
30. String sign = Base64Util.encode(all);
31. return sign;
32. }
33. }

需要的HMACSHA1代码及随机数代码

1. import java.util.Random;
2. import javax.crypto.Mac;
3. import javax.crypto.spec.SecretKeySpec;
4. /**
5. * HMACSHA1算法
6. *
7. * @author 小帅丶
8. * @类名称 HMACSHA1
9. * @remark
10. * @date 2017-8-18
11. */
12. public class HMACSHA1 {
13. /**
14. * 算法标识
15. */
16. private static final String HMAC_SHA1 = "HmacSHA1";
17. /**
18. * 加密
19. * @param data 要加密的数据
20. * @param key 密钥
21. * @return
22. * @throws Exception
23. */
24. public static byte[] getSignature(String data, String key) throws Exception {
25. Mac mac = Mac.getInstance(HMAC_SHA1);
26. SecretKeySpec signingKey = new SecretKeySpec(key.getBytes(),
27. mac.getAlgorithm());
28. mac.init(signingKey);
29. return mac.doFinal(data.getBytes());
30. }
31. /**
32. * 生成随机数字
33. * @param length
34. * @return
35. */
36. public static String genRandomNum(int length){
37. int  maxNum = 62;
38. int i;
39. int count = 0;
40. char[] str = {‘0‘, ‘1‘, ‘2‘, ‘3‘, ‘4‘, ‘5‘, ‘6‘, ‘7‘, ‘8‘, ‘9‘};
41. StringBuffer pwd = new StringBuffer("");
42. Random r = new Random();
43. while(count < length){
44. i = Math.abs(r.nextInt(maxNum));
45. if (i >= 0 && i < str.length) {
46. pwd.append(str[i]);
47. count ++;
48. }
49. }
50. return pwd.toString();
51. }
52. }

第二步:准备相关代码

保存SIGN 或者每次都生成一个也可以 方便测试就直接每次生成一个了

开始识别图片之前需要工具类Base64Util  FileUtil

FileUtil代码

1. import java.io.*;
2. /**
3. * 文件读取工具类
4. */
5. public class FileUtil {
6. /**
7. * 读取文件内容，作为字符串返回
8. */
9. public static String readFileAsString(String filePath) throws IOException {
10. File file = new File(filePath);
11. if (!file.exists()) {
12. throw new FileNotFoundException(filePath);
13. }
14. if (file.length() > 1024 * 1024 * 1024) {
15. throw new IOException("File is too large");
16. }
17. StringBuilder sb = new StringBuilder((int) (file.length()));
18. // 创建字节输入流
19. FileInputStream fis = new FileInputStream(filePath);
20. // 创建一个长度为10240的Buffer
21. byte[] bbuf = new byte[10240];
22. // 用于保存实际读取的字节数
23. int hasRead = 0;
24. while ( (hasRead = fis.read(bbuf)) > 0 ) {
25. sb.append(new String(bbuf, 0, hasRead));
26. }
27. fis.close();
28. return sb.toString();
29. }
30. /**
31. * 根据文件路径读取byte[] 数组
32. */
33. public static byte[] readFileByBytes(String filePath) throws IOException {
34. File file = new File(filePath);
35. if (!file.exists()) {
36. throw new FileNotFoundException(filePath);
37. } else {
38. ByteArrayOutputStream bos = new ByteArrayOutputStream((int) file.length());
39. BufferedInputStream in = null;
40. try {
41. in = new BufferedInputStream(new FileInputStream(file));
42. short bufSize = 1024;
43. byte[] buffer = new byte[bufSize];
44. int len1;
45. while (-1 != (len1 = in.read(buffer, 0, bufSize))) {
46. bos.write(buffer, 0, len1);
47. }
48. byte[] var7 = bos.toByteArray();
49. return var7;
50. } finally {
51. try {
52. if (in != null) {
53. in.close();
54. }
55. } catch (IOException var14) {
56. var14.printStackTrace();
57. }
58. bos.close();
59. }
60. }
61. }
62. }

Base64Util  代码

1. /**
2. * Base64 工具类
3. */
4. public class Base64Util {
5. private static final char last2byte = (char) Integer.parseInt("00000011", 2);
6. private static final char last4byte = (char) Integer.parseInt("00001111", 2);
7. private static final char last6byte = (char) Integer.parseInt("00111111", 2);
8. private static final char lead6byte = (char) Integer.parseInt("11111100", 2);
9. private static final char lead4byte = (char) Integer.parseInt("11110000", 2);
10. private static final char lead2byte = (char) Integer.parseInt("11000000", 2);
11. 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‘, ‘+‘, ‘/‘};
12. public Base64Util() {
13. }
14. public static String encode(byte[] from) {
15. StringBuilder to = new StringBuilder((int) ((double) from.length * 1.34D) + 3);
16. int num = 0;
17. char currentByte = 0;
18. int i;
19. for (i = 0; i < from.length; ++i) {
20. for (num %= 8; num < 8; num += 6) {
21. switch (num) {
22. case 0:
23. currentByte = (char) (from[i] & lead6byte);
24. currentByte = (char) (currentByte >>> 2);
25. case 1:
26. case 3:
27. case 5:
28. default:
29. break;
30. case 2:
31. currentByte = (char) (from[i] & last6byte);
32. break;
33. case 4:
34. currentByte = (char) (from[i] & last4byte);
35. currentByte = (char) (currentByte << 2);
36. if (i + 1 < from.length) {
37. currentByte = (char) (currentByte | (from[i + 1] & lead2byte) >>> 6);
38. }
39. break;
40. case 6:
41. currentByte = (char) (from[i] & last2byte);
42. currentByte = (char) (currentByte << 4);
43. if (i + 1 < from.length) {
44. currentByte = (char) (currentByte | (from[i + 1] & lead4byte) >>> 4);
45. }
46. }
47. to.append(encodeTable[currentByte]);
48. }
49. }
50. if (to.length() % 4 != 0) {
51. for (i = 4 - to.length() % 4; i > 0; --i) {
52. to.append("=");
53. }
54. }
55. return to.toString();
56. }
57. }

创建应用得到的值放在一个常量类里面

1. /**
2. * 常量
3. * @author 小帅丶
4. * @类名称  YouTuAppContants
5. * @remark
6. * @date  2017-8-18
7. */
8. public class YouTuAppContants {
9. public static String AppID = "你自己的AppID ";
10. public static String SecretID = "你自己的SecretID";
11. public static String SecretKey = "你自己的SecretKey";
12. public static String userQQ = "你自己的userQQ";
13. }

还需要一个HTTPUTIL工具类

1. import java.io.BufferedReader;
2. import java.io.DataOutputStream;
3. import java.io.IOException;
4. import java.io.InputStreamReader;
5. import java.net.HttpURLConnection;
6. import java.net.URL;
7. import java.security.KeyManagementException;
8. import java.security.NoSuchAlgorithmException;
9. import java.security.cert.CertificateException;
10. import java.security.cert.X509Certificate;
11. import javax.net.ssl.HostnameVerifier;
12. import javax.net.ssl.SSLContext;
13. import javax.net.ssl.SSLSession;
14. import javax.net.ssl.TrustManager;
15. import javax.net.ssl.X509TrustManager;
16. /**
17. * http 工具类
18. */
19. public class HttpUtilYoutu {
20. private static class TrustAnyTrustManager implements X509TrustManager {
21. public void checkClientTrusted(X509Certificate[] chain, String authType)
22. throws CertificateException {
23. }
24. public void checkServerTrusted(X509Certificate[] chain, String authType)
25. throws CertificateException {
26. }
27. public X509Certificate[] getAcceptedIssuers() {
28. return new X509Certificate[] {};
29. }
30. }
31. private static class TrustAnyHostnameVerifier implements HostnameVerifier {
32. public boolean verify(String hostname, SSLSession session) {
33. return true;
34. }
35. }
36. /**
37. * post方式请求服务器(https协议)
38. *
39. * @param url
40. *            请求地址
41. * @param content
42. *            参数
43. * @param charset
44. *            编码
45. * @return
46. * @throws NoSuchAlgorithmException
47. * @throws KeyManagementException
48. * @throws IOException
49. */
50. public static String post(String url, String content,String charset,String sign)
51. throws NoSuchAlgorithmException, KeyManagementException,
52. IOException {
53. SSLContext sc = SSLContext.getInstance("SSL");
54. sc.init(null, new TrustManager[] { new TrustAnyTrustManager() },
55. new java.security.SecureRandom());
56. URL console = new URL(url);
57. Integer length = content.length();
58. HttpURLConnection conn = (HttpURLConnection) console.openConnection();
59. //文档要求填写的Header参数
60. conn.setRequestProperty("Host", "api.youtu.qq.com");
61. conn.setRequestProperty("Content-Length",length.toString());
62. conn.setRequestProperty("Content-Type", "text/json");
63. conn.setRequestProperty("Authorization", sign);
64. //文档要求填写的Header参数
65. conn.setDoOutput(true);
66. conn.connect();
67. DataOutputStream out = new DataOutputStream(conn.getOutputStream());
68. out.write(content.getBytes(charset));
69. // 刷新、关闭
70. out.flush();
71. out.close();
72. BufferedReader in = null;
73. in = new BufferedReader(
74. new InputStreamReader(conn.getInputStream(), charset));
75. String result = "";
76. String getLine;
77. while ((getLine = in.readLine()) != null) {
78. result += getLine;
79. }
80. in.close();
81. System.err.println("result:" + result);
82. return result;
83. }
84. }

第三步:测试一下人脸检测接口

请求示例类：

1. import com.xiaoshuai.test.Base64Util;
2. import com.xiaoshuai.test.FileUtil;
3. public class DetectFace {
4. //人脸检测接口
5. public static String DETECTFACE_URL="http://api.youtu.qq.com/youtu/api/detectface";
6. public static void main(String[] args) throws Exception {
7. String imagePath = "G:/test2.jpg";
8. System.out.println(getDetectFace(imagePath));
9. }
10. /**
11. * 检测图中人脸信息
12. * @param imagePath 图片路径
13. * @return
14. * @throws Exception
15. */
16. public static String getDetectFace(String imagePath) throws Exception{
17. //得到Authorization
18. String sign = Sign.getSign(YouTuAppContants.userQQ,
19. YouTuAppContants.AppID, YouTuAppContants.SecretID,
20. YouTuAppContants.SecretKey);
21. byte[] imgData = FileUtil.readFileByBytes(imagePath);
22. String image =  Base64Util.encode(imgData);;
23. String param = "{\"app_id\":\""+YouTuAppContants.AppID+"\",\"image\":\""+image+"\"}";
24. String result = HttpUtilYoutu.post(DETECTFACE_URL, param, "UTF-8",sign);
25. System.out.println(result);
26. return result;
27. }
28. }

看看返回的内容:

1. {"session_id":"","image_height":280,"image_width":359,"face":[{"face_id":"2188093443753939350","x":128,"y":127,"height":106.0,"width":106.0,"pitch":6,"roll":3,"yaw":-2,"age":23,"gender":94,"glass":true,"expression":34,"beauty":80,"face_shape":{"face_profile":[{"x":139,"y":160},{"x":139,"y":170},{"x":140,"y":180},{"x":143,"y":189},{"x":146,"y":199},{"x":150,"y":208},{"x":156,"y":217},{"x":162,"y":225},{"x":170,"y":232},{"x":179,"y":236},{"x":189,"y":238},{"x":199,"y":235},{"x":207,"y":230},{"x":214,"y":222},{"x":221,"y":214},{"x":225,"y":205},{"x":229,"y":195},{"x":231,"y":185},{"x":232,"y":174},{"x":233,"y":164},{"x":232,"y":155}],"left_eye":[{"x":152,"y":159},{"x":156,"y":161},{"x":161,"y":163},{"x":166,"y":162},{"x":171,"y":160},{"x":167,"y":157},{"x":162,"y":156},{"x":157,"y":157}],"right_eye":[{"x":216,"y":156},{"x":212,"y":159},{"x":208,"y":160},{"x":203,"y":160},{"x":198,"y":158},{"x":202,"y":155},{"x":206,"y":154},{"x":211,"y":154}],"left_eyebrow":[{"x":143,"y":148},{"x":151,"y":148},{"x":159,"y":148},{"x":166,"y":148},{"x":174,"y":147},{"x":167,"y":142},{"x":158,"y":141},{"x":150,"y":142}],"right_eyebrow":[{"x":224,"y":145},{"x":216,"y":145},{"x":208,"y":145},{"x":200,"y":146},{"x":192,"y":146},{"x":199,"y":141},{"x":208,"y":139},{"x":217,"y":139}],"mouth":[{"x":170,"y":209},{"x":175,"y":214},{"x":180,"y":218},{"x":187,"y":219},{"x":194,"y":217},{"x":200,"y":213},{"x":204,"y":207},{"x":199,"y":203},{"x":192,"y":201},{"x":186,"y":203},{"x":180,"y":202},{"x":174,"y":205},{"x":175,"y":210},{"x":181,"y":211},{"x":187,"y":211},{"x":193,"y":210},{"x":198,"y":209},{"x":198,"y":207},{"x":193,"y":208},{"x":187,"y":209},{"x":180,"y":207},{"x":175,"y":207}],"nose":[{"x":184,"y":184},{"x":183,"y":160},{"x":180,"y":166},{"x":177,"y":173},{"x":174,"y":180},{"x":170,"y":188},{"x":178,"y":191},{"x":185,"y":192},{"x":192,"y":190},{"x":199,"y":186},{"x":194,"y":179},{"x":191,"y":172},{"x":187,"y":166}]}}],"errorcode":0,"errormsg":"OK"}

1. "face_id": "2188093443753939350",
2. "x": 128,
3. "y": 127,
4. "height": 106,
5. "width": 106,
6. "pitch": 6,
7. "roll": 3,
8. "yaw": -2,
9. "age": 23,//年龄 [0~100]
10. "gender": 94,//性别 [0/(female)~100(male)]
11. "glass": true,//是否有眼镜 [true,false]
12. "expression": 34,//微笑[0(normal)~50(smile)~100(laugh)]
13. "beauty": 80,//魅力 [0~100]