Step 1: Authentication Service Technical Solution
The Java code is implemented as follows
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;
}
} Required HMACSHA1 code and random number code
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();
}
} Step 2: Prepare the relevant code
Save the SIGN or generate one each time, it is also convenient for testing, just generate one each time
The tool class Base64Util FileUtil is required before starting to recognize images
FileUtil code
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 code
/**
* 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();
}
} The value obtained by creating the application is placed in a constant class
/**
* 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";
} Also need an HTTPUTIL tool class to send the request
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;
}
}
Step 3: Test the face detection interface
Request sample code:
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;
}
} Take a look at what is returned:
{"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"} Ignore the data to detect the location of facial features:
"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] Want to know your own charm? Then scan the QR code below (WeChat applet code)
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