内容简介：调用腾讯优图开放平台进行人脸识别：Java调用API实现
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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想体验一下？那就扫描一下我的微信个人小程序吧。
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