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 p_w_picpathPath = "G:/test2.jpg"; System.out.println(getDetectFace(p_w_picpathPath)); } /** * 检测图中人脸信息 * @param p_w_picpathPath 图片路径 * @return * @throws Exception */ public static String getDetectFace(String p_w_picpathPath) throws Exception{ //得到Authorization String sign = Sign.getSign(YouTuAppContants.userQQ, YouTuAppContants.AppID, YouTuAppContants.SecretID, YouTuAppContants.SecretKey); byte[] imgData = FileUtil.readFileByBytes(p_w_picpathPath); String p_w_picpath = Base64Util.encode(imgData);; String param = "{\"app_id\":\""+YouTuAppContants.AppID+"\",\"p_w_picpath\":\""+p_w_picpath+"\"}"; 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":"","p_w_picpath_height":280,"p_w_picpath_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]