1-004.百度云中的百度人脸识别用java开发人脸识别Demo

1.官网文档必须看
http://ai.baidu.com/docs


2.在管理中心创建应用及查看相关参数 AppID APIKey SecretKey都需要保存起来



3.搬砖测试

项目需要的lib包，基本下载官网的SDK就都会包含。

package com.xs.demo.common;
//相关的必要参数可以保存到常量
public class APIConstants {
//百度人脸识别应用id
public static final String APPID = "管理中心获得";
//百度人脸识别应用apikey
public static final String API_KEY = "管理中心获得";
//百度人脸识别应用sercetkey
public static final String SERCET_KEY = "管理中心获得";
//百度人脸识别token 有效期一个月
public static final String TOKEN = "为了测试，将生成的key先存一下";
}

4.获取AccessToken

官网文档说明http://ai.baidu.com/docs#Beginner-Auth

向授权服务地址

https://aip.baidubce.com/oauth/2.0/token

发送请求（推荐使用POST），并在URL中带上以下参数：
grant_type: 必须参数，固定为“client_credentials”；
client_id: 必须参数，应用的API Key；
client_secret: 必须参数，应用的Secret Key；

//获取AccessToken 有效期一个月
public class AITest {
public static void main(String[] args) throws Exception {;
String access_token_url = "https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials" +
"&client_id="+APIContants.API_KEY
+"&client_secret="+ APIContants.SERCET_KEY;
HttpResponse response = HttpUtils.doPostBD(access_token_url,new HashMap<String, String>(),new HashMap<String, String>());
System.out.println(EntityUtils.toString(response.getEntity()));

}
}

 

//返回的JSON数据。只需要access_token即可
{"access_token":"24.39b6fc97e87058ed6edb92ad68782c29.2592000.1492651482.11111-11111","session_key":"9mzdCP1XKXZ5yipkl7ubftudl2reGQybIG25NqWi9vqeSFFjxigLFl+WpfDW0PyUt7EP\/Uyn74r31lj3d4kVr4xkbkSk","scope":"public vis-faceverify_faceverify vis-faceattribute_faceattribute wise_adapt lebo_resource_base lightservice_public hetu_basic lightcms_map_poi kaidian_kaidian wangrantest_test wangrantest_test1 bnstest_test1 bnstest_test2 ApsMisTest_Test\u6743\u9650 vis-classify_flower","refresh_token":"25.3c8370eaeb8af4f8367a38b6dbefcef9.315360000.1805419482.11111-11111","session_secret":"ff06850552b385cff19de958e435e6a4","expires_in":2592000}

5.HttpUtils工具类代码

package com.xs.demo.util;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

import org.apache.commons.lang.StringUtils;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpDelete;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.entity.ByteArrayEntity;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
/**
* httpClient工具类
* @author 小帅帅丶
* @date  2017-3-21上午09:28:21
*/
public class HttpUtils {
/**
*
* @Title doPostBD
* @param url 接口地址
* @param method 请求方式
* @param headers
* @param bodys
* @return response
* @throws Exception
* @author 小帅帅丶
* @date 2017-3-20
*
*/
public static HttpResponse doPostBD(String url,
Map<String, String> headers,
Map<String, String> bodys)
throws Exception {
HttpClient httpClient = wrapClient(url);
HttpPost request = new HttpPost(url);
for (Map.Entry<String, String> e : headers.entrySet()) {
request.addHeader(e.getKey(), e.getValue());
}
if (bodys != null) {
List<NameValuePair> nameValuePairList = new ArrayList<NameValuePair>();
for (String key : bodys.keySet()) {
nameValuePairList.add(new BasicNameValuePair(key, bodys.get(key)));
}
UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(nameValuePairList, "utf-8");
formEntity.setContentType("application/x-www-form-urlencoded; charset=UTF-8");
request.setEntity(formEntity);
}

return httpClient.execute(request);
}
private static HttpClient wrapClient(String host) {
HttpClient httpClient = new DefaultHttpClient();
if (host.startsWith("https://")) {
sslClient(httpClient);
}
return httpClient;
}
private static void sslClient(HttpClient httpClient) {
try {
SSLContext ctx = SSLContext.getInstance("TLS");
X509TrustManager tm = new X509TrustManager() {
public X509Certificate[] getAcceptedIssuers() {
return null;
}
public void checkClientTrusted(X509Certificate[] xcs, String str) {

}
public void checkServerTrusted(X509Certificate[] xcs, String str) {

}
};
ctx.init(null, new TrustManager[] { tm }, null);
SSLSocketFactory ssf = new SSLSocketFactory(ctx);
ssf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
ClientConnectionManager ccm = httpClient.getConnectionManager();
SchemeRegistry registry = ccm.getSchemeRegistry();
registry.register(new Scheme("https", 443, ssf));
} catch (KeyManagementException ex) {
throw new RuntimeException(ex);
} catch (NoSuchAlgorithmException ex) {
throw new RuntimeException(ex);
}
}
}

6.检测人脸美丑及年龄
http://ai.baidu.com/docs#FACE官网文档
请求参数

	是否必选	类型	说明
image	是	string	base64编码后的图片数据，图片大小不超过2M。
max_face_num	否	uint32	最多处理人脸数目，默认值1
face_fields	否	string	包括age,beauty,expression,faceshape,gender,glasses,landmark,race,qualities信息，逗号分隔，默认只返回人脸框、概率和旋转角度。

URL参数：

参数	值
access_token	通过API Key和Secret Key获取的access_token,参考“Access Token获取”

Header如下：

参数	值
Content-Type	application/x-www-form-urlencoded

Body中数据如下：

参数	值
image	图像base64编码
max_face_num	非必填，默认1
face_fields	非必填

 

package com.xs.demo.test;

import java.util.HashMap;
import java.util.Map;

import org.apache.http.HttpResponse;
import org.apache.http.util.EntityUtils;

import com.xs.demo.common.APIConstants;
import com.xs.demo.util.HttpUtils;
import com.xs.demo.util.Image4Base64;

//人脸识别 百度一张如花的图片
public class Test {
public static void main(String[] args) {
/****************/
String Filepath = "F:/ruhua.jpg";
String image = Image4Base64.GetImageStr(Filepath);
String url = "https://aip.baidubce.com/rest/2.0/face/v1/detect?access_token="+APIConstants.TOKEN;
Map<String, String> headers = new HashMap<String, String>();
Map<String, String> bodys = new HashMap<String, String>();
headers.put("Content-Type", "application/x-www-form-urlencoded");
bodys.put("image", image);
bodys.put("face_fields", "age,beauty,expression,gender,glasses,race,qualities");
try {
HttpResponse response = HttpUtils.doPostBD(url,headers,bodys);
System.out.println(EntityUtils.toString(response.getEntity()));
} catch (Exception e) {
e.printStackTrace();
}
}
}

7.返回JSON字符串内容

age 年龄  （目前官网还是没有说明年龄的误差范围）

beauty 美丑分数 0-100 越大值越美（之前官网写的是0-1在我发现错误时，提交官网，官网及时做了修改）

如花识别年龄38  美丑评分21  表示不太合理

{
"result": [{
"expression": 0,
"face_probability": 1,
"glasses": 0,
"location": {
"height": 155,
"width": 136,
"left": 103,
"top": 49
},
"beauty": 21.201513290405,
"race": "yellow",
"expression_probablity": 0.77510279417038,
"rotation_angle": 9,
"yaw": 2.6519072055817,
"roll": 10.0813331604,
"qualities": {
"completeness": 0,
"occlusion": {
"left_eye": 0,
"chin": 0,
"mouth": 0,
"right_cheek": 0,
"left_cheek": 0,
"nose": 0,
"right_eye": 0
},
"blur": 0,
"type": {
"cartoon": 0.0060238856822252,
"human": 0.99397611618042
},
"illumination": 0
},
"gender_probability": 0.93728905916214,
"age": 37.866649627686,
"gender": "male",
"glasses_probability": 0.99999260902405,
"race_probability": 0.99436098337173,
"pitch": -17.080112457275
}],
"result_num": 1,
"log_id": 2045651588
}

8.SDK调用

/**
* 基于百度SDK提供的方法进行调用
* @author 小帅帅丶
* @date  2017-3-20下午06:00:05
*/
public class Sample {
public static void main(String[] args) {
//初始化一个FaceClient
AipFace face = new AipFace(APIConstants.APPID,APIConstants.API_KEY,APIConstants.SERCET_KEY);
//可选：设置网络连接参数
face.setConnectionTimeoutInMillis(60000);
face.setSocketTimeoutInMillis(60000);
//调用API
HashMap map = new HashMap();
//
map.put("face_fields", "age,beauty,expression,gender,glasses,race,qualities");
String path = "F:/ruhua.jpg";
AipRequest aipRequest = new AipRequest();
aipRequest.setBody(map);
JSONObject result = face.detect(Image4Base64.GetImageStrByte(path),map);
System.out.println(result.toString(2));
}
}

以上就是百度人脸识别API的调用测试流程及demo