java调用face++实现人脸识别
首先为什么我会选择旷视的face++呢，face++在人工智能尤其是在人脸识别是业内做的比较好的一家公司，又有自己的技术群，每天为人们解答各种疑难，为开发人员提供的好的帮助，我的这篇主要是应用于微信公众号开发当中的一个小功能
代码如下：
/**
* 人脸识别工具类
* 耿直
* qq：1293443962
*/
public class FacesUitl {
public static String detectFace(String imageUrl) throws Exception {
StringBuffer buffer = new StringBuffer();
String url = "https://api-cn.faceplusplus.com/facepp/v3/detect";
HashMap map = new HashMap();
HashMap byteMap = new HashMap();
map.put("api_key", "申请自己的key");
map.put("api_secret", "申请自己的secret");
map.put("return_attributes",
"gender,age,glass,headpose,smiling,ethnicity");
map.put("image_url", imageUrl);
try {
byte[] bacd = post(url, map, byteMap);
String string = new String(bacd);
// 获取faces下的所有属性
JSONArray faceArray = (JSONArray) JSONObject.fromObject(string)
.get("faces");
List faceList = new ArrayList();
for (int i = 0; i < faceArray.size(); i++) {
JSONObject faceObject = (JSONObject) faceArray.get(i);
JSONObject attributesObject = faceObject
.getJSONObject("attributes");
Face face = new Face();
// face.setFaceId(faceObject.getString("face_id"));
// 年龄
face.setAgeValue(attributesObject.getJSONObject("age").getInt(
"value"));
// 性别
face.setGenderValue(genderCovent(attributesObject
.getJSONObject("gender").getString("value")));
// 人种
face.setRaceValue(raceCovent(attributesObject.getJSONObject(
"ethnicity").getString("value")));
// 微笑程度
face.setSmilingValue(attributesObject.getJSONObject("smile")
.getDouble("value"));
face.setSmilingValue(attributesObject.getJSONObject("smile")
.getDouble("value"));
// 是否戴眼镜
face.setGlass(glassCovent(attributesObject.getJSONObject(
"glass").getString("value")));
// 人脸姿势(抬头，摇头，转头)
face.setHeadpose_pitch(attributesObject.getJSONObject(
"headpose").getDouble("yaw_angle"));
face.setHeadpose_roll(attributesObject
.getJSONObject("headpose").getDouble("pitch_angle"));
face.setHeadpose_yaw(attributesObject.getJSONObject("headpose")
.getDouble("roll_angle"));
faceList.add(face);
}
if (1 == faceList.size()) {
buffer.append("共检测到").append(faceList.size()).append("张人脸")
.append("\n\n");
for (Face face : faceList) {
buffer.append(face.getRaceValue()).append("人种，");
buffer.append(face.getGenderValue()).append(",");
buffer.append(face.getAgeValue()).append("岁左右");
buffer.append("\n").append("是否佩戴眼镜：")
.append(face.getGlass());
}
} else if (faceList.size() > 1) {
buffer.append("共检测到").append(faceList.size())
.append("张人脸,按脸部中心位置从右至左依次为").append("\n\n");
for (Face face : faceList) {
buffer.append(face.getRaceValue()).append("人种，");
buffer.append(face.getGenderValue()).append(",");
buffer.append(face.getAgeValue()).append("岁左右");
buffer.append("\n").append("是否佩戴眼镜：")
.append(face.getGlass());
}
}
} catch (Exception e) {
e.printStackTrace();
}
return buffer.toString();
}
/**
* 性别转换
*/
private static String genderCovent(String gender) {
String result = "男性";
if (gender.equals("Female")) {
result = "女性";
} else if (gender.equals("Male")) {
result = "男性";
}
return result;
}
/**
* 人种
* */
private static String raceCovent(String race) {
String result = "黄色";// "Asian/White/Black"
if (race.equals("Asian")) {
result = "黄色";
} else if (race.equals("White")) {
result = "白色";
} else if (race.equals("Black")) {
result = "黑色";
}
return result;
}
public static String glassCovent(String galss) {
String result = "不佩戴眼镜";// "None 不佩戴眼镜 Dark 佩戴墨镜 Normal 佩戴普通眼镜"
if (galss.equals("None")) {
result = "不佩戴眼镜 ";
} else if (galss.equals("Dark")) {
result = "佩戴墨镜";
} else if (galss.equals("Normal")) {
result = "佩戴普通眼镜";
}
return result;
}
private final static int CONNECT_TIME_OUT = 30000;
private final static int READ_OUT_TIME = 50000;
private static String boundaryString = getBoundary();
protected static byte[] post(String url, HashMap map,
HashMap fileMap) throws Exception {
HttpURLConnection conne;
URL url1 = new URL(url);
conne = (HttpURLConnection) url1.openConnection();
conne.setDoOutput(true);
conne.setUseCaches(false);
conne.setRequestMethod("POST");
conne.setConnectTimeout(CONNECT_TIME_OUT);
conne.setReadTimeout(READ_OUT_TIME);
conne.setRequestProperty("accept", "*/*");
conne.setRequestProperty("Content-Type",
"multipart/form-data; boundary=" + boundaryString);
conne.setRequestProperty("connection", "Keep-Alive");
conne.setRequestProperty("user-agent",
"Mozilla/4.0 (compatible;MSIE 6.0;Windows NT 5.1;SV1)");
DataOutputStream obos = new DataOutputStream(conne.getOutputStream());
Iterator iter = map.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry entry = (Map.Entry) iter.next();
String key = entry.getKey();
String value = entry.getValue();
obos.writeBytes("--" + boundaryString + "\r\n");
obos.writeBytes("Content-Disposition: form-data; name=\"" + key
+ "\"\r\n");
obos.writeBytes("\r\n");
obos.writeBytes(value + "\r\n");
}
if (fileMap != null && fileMap.size() > 0) {
Iterator fileIter = fileMap.entrySet().iterator();
while (fileIter.hasNext()) {
Map.Entry fileEntry = (Map.Entry) fileIter
.next();
obos.writeBytes("--" + boundaryString + "\r\n");
obos.writeBytes("Content-Disposition: form-data; name=\""
+ fileEntry.getKey() + "\"; filename=\"" + encode(" ")
+ "\"\r\n");
obos.writeBytes("\r\n");
obos.write(fileEntry.getValue());
obos.writeBytes("\r\n");
}
}
obos.writeBytes("--" + boundaryString + "--" + "\r\n");
obos.writeBytes("\r\n");
obos.flush();
obos.close();
InputStream ins = null;
int code = conne.getResponseCode();
try {
if (code == 200) {
ins = conne.getInputStream();
} else {
ins = conne.getErrorStream();
}
} catch (SSLException e) {
e.printStackTrace();
return new byte[0];
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buff = new byte[4096];
int len;
while ((len = ins.read(buff)) != -1) {
baos.write(buff, 0, len);
}
byte[] bytes = baos.toByteArray();
ins.close();
return bytes;
}
private static String getBoundary() {
StringBuilder sb = new StringBuilder();
Random random = new Random();
for (int i = 0; i < 32; ++i) {
sb.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_-".charAt(random
.nextInt("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_"
.length())));
}
return sb.toString();
}
private static String encode(String value) throws Exception {
return URLEncoder.encode(value, "UTF-8");
}
public static byte[] getBytesFromFile(File f) {
if (f == null) {
return null;
}
try {
FileInputStream stream = new FileInputStream(f);
ByteArrayOutputStream out = new ByteArrayOutputStream(1000);
byte[] b = new byte[1000];
int n;
while ((n = stream.read(b)) != -1)
out.write(b, 0, n);
stream.close();
out.close();
return out.toByteArray();
} catch (IOException e) {
}
return null;
}