第一步：鉴权服务技术方案

Java代码实现如下

import java.util.Date;      import com.baidu.aip.util.Base64Util;   /**   * 获取Authorization   * @author 小帅丶   * @类名称  Sign   * @remark    * @date  2017-8-18   */   public class Sign {       /**       * Authorization方法       * @param userQQ 开发者创建应用时的QQ号       * @param AppID 开发者创建应用后的AppID       * @param SecretID 开发者创建应用后的SecretID       * @param SecretKey 开发者创建应用后的SecretKey       * @return sign       * @throws Exception       */       public static String getSign(String userQQ,String AppID,String SecretID,String SecretKey) throws Exception{           long tnowTimes = new Date().getTime()/1000;           long enowTimes = tnowTimes+2592000;           String rRandomNum = HMACSHA1.genRandomNum(10);           String param = "u=" + userQQ + "&a=" + AppID + "&k=" + SecretID + "&e="                   + enowTimes + "&t=" + tnowTimes + "&r=" + rRandomNum + "&f=";           byte [] hmacSign = HMACSHA1.getSignature(param, SecretKey);           byte[] all = new byte[hmacSign.length+param.getBytes().length];           System.arraycopy(hmacSign, 0, all, 0, hmacSign.length);           System.arraycopy(param.getBytes(), 0, all, hmacSign.length, param.getBytes().length);           String sign = Base64Util.encode(all);           return sign;       }   } 

需要的HMACSHA1代码及随机数代码

    import java.util.Random;              import javax.crypto.Mac;       import javax.crypto.spec.SecretKeySpec;              /**       * HMACSHA1算法       *        * @author 小帅丶       * @类名称 HMACSHA1       * @remark       * @date 2017-8-18       */       public class HMACSHA1 {           /**           * 算法标识           */           private static final String HMAC_SHA1 = "HmacSHA1";           /**           * 加密           * @param data 要加密的数据           * @param key 密钥            * @return           * @throws Exception           */           public static byte[] getSignature(String data, String key) throws Exception {               Mac mac = Mac.getInstance(HMAC_SHA1);               SecretKeySpec signingKey = new SecretKeySpec(key.getBytes(),                       mac.getAlgorithm());               mac.init(signingKey);               return mac.doFinal(data.getBytes());           }           /**           * 生成随机数字           * @param length           * @return           */           public static String genRandomNum(int length){                 int  maxNum = 62;                 int i;                 int count = 0;                 char[] str = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9'};                     StringBuffer pwd = new StringBuffer("");                 Random r = new Random();                 while(count < length){                  i = Math.abs(r.nextInt(maxNum));                     if (i >= 0 && i < str.length) {                   pwd.append(str[i]);                   count ++;                  }                 }                 return pwd.toString();               }        }  

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

    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();                   }               }           }       }  

Base64Util  代码

    /**       * 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();           }       }  

创建应用得到的值放在一个常量类里面

    /**       * 常量       * @author 小帅丶       * @类名称  YouTuAppContants       * @remark        * @date  2017-8-18       */       public class YouTuAppContants {           public static String AppID = "你自己的AppID ";           public static String SecretID = "你自己的SecretID";           public static String SecretKey = "你自己的SecretKey";           public static String userQQ = "你自己的userQQ";       }  

还需要一个HTTPUTIL工具类 发送请求

    import java.io.BufferedReader;       import java.io.DataOutputStream;       import java.io.IOException;       import java.io.InputStreamReader;       import java.net.HttpURLConnection;       import java.net.URL;       import java.security.KeyManagementException;       import java.security.NoSuchAlgorithmException;       import java.security.cert.CertificateException;       import java.security.cert.X509Certificate;               import javax.net.ssl.HostnameVerifier;       import javax.net.ssl.SSLContext;       import javax.net.ssl.SSLSession;       import javax.net.ssl.TrustManager;       import javax.net.ssl.X509TrustManager;              /**       * http 工具类       */       public class HttpUtilYoutu {            private static class TrustAnyTrustManager implements X509TrustManager {                                   public void checkClientTrusted(X509Certificate[] chain, String authType)                           throws CertificateException {                   }                               public void checkServerTrusted(X509Certificate[] chain, String authType)                           throws CertificateException {                   }                               public X509Certificate[] getAcceptedIssuers() {                       return new X509Certificate[] {};                   }               }                           private static class TrustAnyHostnameVerifier implements HostnameVerifier {                   public boolean verify(String hostname, SSLSession session) {                       return true;                   }               }                           /**               * post方式请求服务器(https协议)               *                * @param url               *            请求地址               * @param content               *            参数               * @param charset               *            编码               * @return               * @throws NoSuchAlgorithmException               * @throws KeyManagementException               * @throws IOException               */               public static String post(String url, String content,String charset,String sign)                       throws NoSuchAlgorithmException, KeyManagementException,                       IOException {                   SSLContext sc = SSLContext.getInstance("SSL");                   sc.init(null, new TrustManager[] { new TrustAnyTrustManager() },                           new java.security.SecureRandom());                   URL console = new URL(url);                   Integer length = content.length();                   HttpURLConnection conn = (HttpURLConnection) console.openConnection();                   //文档要求填写的Header参数                                       conn.setRequestProperty("Host", "api.youtu.qq.com");                   conn.setRequestProperty("Content-Length",length.toString());                   conn.setRequestProperty("Content-Type", "text/json");                   conn.setRequestProperty("Authorization", sign);                       //文档要求填写的Header参数                      conn.setDoOutput(true);                   conn.connect();                   DataOutputStream out = new DataOutputStream(conn.getOutputStream());                   out.write(content.getBytes(charset));                   // 刷新、关闭                   out.flush();                   out.close();                   BufferedReader in = null;                   in = new BufferedReader(                           new InputStreamReader(conn.getInputStream(), charset));                   String result = "";                   String getLine;                   while ((getLine = in.readLine()) != null) {                       result += getLine;                   }                   in.close();                   System.err.println("result:" + result);                   return result;               }              }  

第三步:测试一下人脸检测接口

请求示例代码：

import com.xiaoshuai.test.Base64Util;   import com.xiaoshuai.test.FileUtil;      public class DetectFace {       //人脸检测接口       public static String DETECTFACE_URL="http://api.youtu.qq.com/youtu/api/detectface";       public static void main(String[] args) throws Exception {           String imagePath = "G:/test2.jpg";           System.out.println(getDetectFace(imagePath));                  }       /**       * 检测图中人脸信息       * @param imagePath 图片路径       * @return       * @throws Exception       */       public static String getDetectFace(String imagePath) throws Exception{           //得到Authorization           String sign = Sign.getSign(YouTuAppContants.userQQ,                   YouTuAppContants.AppID, YouTuAppContants.SecretID,                   YouTuAppContants.SecretKey);           byte[] imgData = FileUtil.readFileByBytes(imagePath);           String image =  Base64Util.encode(imgData);;           String param = "{\"app_id\":\""+YouTuAppContants.AppID+"\",\"image\":\""+image+"\"}";           String result = HttpUtilYoutu.post(DETECTFACE_URL, param, "UTF-8",sign);           System.out.println(result);           return result;       }   } 

看看返回的内容:

{"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"}  

忽略掉检测五官位置的数据:

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

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